Procedimientos mínimamente invasivos en prótesis implanto-asistidas en personas adultas mayores / Minimally invasive procedures in implant-supported prostheses in elderly persons

Este artículo es una actualización de uno publicado en la Revista del Ateneo Argentino de Odontología (RAAO) en el número 2 de 2016, titulado: "Implantes retrosinusales como alternativa al levantamiento del piso del seno maxilar" donde se presentan casos con implantes colocados con técnica mínimamente invasiva sin colgajo (flapless) en posición inclinada, que, en ese momento, tenían 10 años de evolución. Teniendo en cuenta que son pacientes de mi prácti- ca privada, con los cuales mantengo un seguimiento continuo, me pareció interesante enfocarme en un paciente que participó en el artículo arriba mencio- nado, que sufrió pérdida de un implante a los 14 años de instalado. El objetivo del presente trabajo será mostrar el resul- tado favorable del caso con técnicas mínimamente invasivas. Cabe destacar que el paciente de referencia tiene implantes desde hace más de 20 años, por lo que se evaluarán otros implantes inmediatos postextrac- ción, tratados con la misma técnica (AU)

This article is an actualization of one published in the Argentine Ateneo of Dentistry Journal, in 2016, number 2, titled: "Retro Sinusal Implants as an Alternative to lifting the Maxillary Sinus Bottom" in which several cases of implants were placed with a flapless minimum invasive technique, in an inclined position, which at that moment had a 10-year evolution. Considering that these patients are from my private practice of whom I keep a permanent follow up, it seemed interesting to me to focus on a particular patient that was mentioned in the previous article, who suffered the loss of an implant placed 14 years before. The objective of the present work will be to show the positive outcome of this case with minimum invasive techniques. It should be noted that the patient named above, has twenty years old implants placed with success, so new inmediate post extraction implants have been evaluated, placed with the same technique (AU)

Cloning and gene functional analysis study of dynamin-related protein GeDRP1E gene in Gastrodia elata / 药学学报

The gene GeDRP1E encoding dynamin-related protein 1E in Gastrodia elata was cloned by specific primers which were designed based on the transcriptome data of G. elata. Bioinformatics analysis on GeDRP1E gene was carried out by using ExPASy, ClustalW, MEGA, etc. Positive transgenic Arabidopsis plant and potato minituber were obtained with the genetic transformation system of Arabidopsis and potato. The plant height and seed setting rate of transgenic Arabidopsis, and agronomic characters, such as size, weight and starch content of potato minituber of transgenic potato were tested and analyzed. And GeDRP1E gene function was preliminarily investigated. The results showed that the open reading frame of GeDRP1E gene was 1 899 bp in length and 632 amino acids residues were encoded, with a relative molecular weight of 69.90 kDa and a molecular formula of C3079H4973N883O933S19. It was predicted that the theoretical isoelectric point was 7.27, the instability coefficient was 43.34, and the average hydrophilicity index was -0.259, which was indicative of an unstable hydrophilic protein. GeDRP1E has no transmembrane structure and signal peptide, and was localized in the cytoplasm. The phylogenetic tree showed that GeDRP1E was highly homologous with DRP1E proteins of other plant species, among which GeDRP1E had the highest homology with DcDRP1E (XP_020689662.1) in Dendrobium candidum, reaching 90.05%. GeDRP1E plant expression vector pCambia1300-35Spro-GeDRP1E was constructed by double digests, and Arabidopsis complementary mutant and potato overexpression strain of GeDRP1E gene were obtained by Agrobacterium-mediated gene transformation. Compared with the Arabidopsis AtDRP1E mutant, the height and seed setting rate of the GeDRP1E complementation mutant were rescued. The minituber of GeDRP1E overexpression potato had larger size, heavier weight and higher starch content, comparing to wild-type potato. It was preliminarily induced that GeDRP1E was involved in mitochondrial morphology regulation, which related to the growth and development of Arabidopsis plants and potato miniature. The research results laid a foundation for further elucidating the molecular mechanisms underlying the growth and development of G. elata tuber development.

Economics of Potato cv. Kufri Lima under Different Planting Dates and Nitrogen Levels

The experiment entitled “Effect of planting dates and nitrogen levels on potato cv. Kufri Lima” was conducted at Research Farm of the Department of Vegetable Science, Choudhary Charan Singh Haryana Agricultural University, Hisar during winter season of 2020-21. The treatments comprising of three planting dates (25th September, 10th October and 25th October) and four levels of nitrogen (0, 75, 100 and 125% of recommended dose of nitrogen, RDN) were laid out in a randomized block design (factorial) with three replications. Results of study revealed that significantly increase in growth and yield on 10th October planting as compared to earlier and late planting. Total marketable potato tuber yield was recorded with 10th October planting with 100% RDN application (408 q/ha), closely followed by 125% RDN application (407.7 q/ha) and minimum was recorded under control. It can be concluded that 10th October with application of 100% of RDN (150 kg N/ha) provided with highest marketable yield and benefit to cost ratio (1.82). This may be due to higher marketable and total tuber yield under this treatment.

Farmers’ Perception on Tuber Crop Production Technology in Manipur, India

Tuber crop cultivation contributes positively to the economic empowerment of the poor people and generally preferred by the tribal people. The study was conducted in the hill districts, viz., Senapati, Tamenglong, Chandel, Churachandpur and Ukhrul districts of Manipur to understand the farmers perception on tuber crop mainly Elephant Foot Yam, Colocasia, Dioscoria and Casava production technology with 110 randomly selected respondents. Data collection was done through personal interview with structure schedule and was analyzed in terms of frequency, percentage and rank. The study revealed that perception of famers on tuber crop germination rate is 67 percent followed by weed management (48%), after care (58%) and cost of cultivation (55%) is as usual as other crop production technology whereas 78 percent of the respondents revealed that there is no difference between tuber crop and other crop production technology for overall rating. The respondents reported that water management (65%), nutrient management (64%), disease incidence rate (58%), pest infestation rate (61%) and labour requirement (68%) are less as compared to other crop production technology.

Analysis of epidemic characteristics of tuberculosis in schools in Shijiazhuang during 2011-2020 / 中国学校卫生

Objective@#To analyze the trend and characteristics of school tuberculosis epidemic in Shijiazhuang from 2011 to 2020, and to provide reference for school tuberculosis prevention and control.@*Methods@#Descriptive methods were used to analyze the epidemiological characteristics of tuberculosis among students and the epidemic situation of tuberculosis in schools in Shijiazhuang from 2011 to 2020. The χ 2 test and χ 2 trend test were used to analyze the characteristics and trend of school tuberculosis.@*Results@#A total of 4 896 cases of tuberculosis were registered among students in Shijiazhuang from 2011 to 2020. The average annual registered incidence rate of students was 24.69/100 000, and the difference in incidence rate was statistically significant ( χ 2=318.50, P <0.01) the overall registered incidence rate of tuberculosis among students in the past 10 years was on the rise ( χ 2 trend =87.79, P <0.01). Among the student cases, male accounted for 53.89%, female accounted for 46.11%. The age group of students aged >18 and above accounted for the largest proportion(50.35%), followed by the age group aged 16-18( 35.80 %). Most students cases occurred in April and September-November, with September the highest(12.03%). A total of 22 clustered outbreaks (174 cases) and the aggregate epidemic accounted for 3.55% of the total number of students with tuberculosis.@*Conclusion@#The prevention and control of tuberculosis epidemic in schools in Shijiazhuang should not be underestimated, and strengthen the supervision, management, publicity and education of students in key age groups to avoid clusters of outbreaks.

Cloning and gene function of dicarboxylate-tricarboxylate carrier protein in Gastrodia elata / 中国中药杂志

The gene GeDTC encoding the dicarboxylate-tricarboxylate carrier protein in Gastrodia elata was cloned by specific primers which were designed based on the transcriptome data of G. elata. Bioinformatics analysis on GeDTC gene was carried out by using ExPASY, ClustalW, MEGA, etc. Positive transgenic plants and potato minituber were obtained by virtue of the potato genetic transformation system. Agronomic characters, such as size, weight, organic acid content, and starch content, of potato minituber were tested and analyzed and GeDTC gene function was preliminarily investigated. The results showed that the open reading frame of GeDTC gene was 981 bp in length and 326 amino acid residues were encoded, with a relative molecular weight of 35.01 kDa. It was predicted that the theoretical isoelectric point of GeDTC protein was 9.83, the instability coefficient was 27.88, and the average index of hydrophilicity was 0.104, which was indicative of a stable hydrophilic protein. GeDTC protein had a transmembrane structure and no signal peptide and was located in the inner membrane of mitochondria. The phylogenetic tree showed that GeDTC was highly homologous with DTC proteins of other plant species, among which GeDTC had the highest homology with DcDTC(XP＿020675804.1) in Dendrobium candidum, reaching 85.89%. GeDTC overexpression vector pCambia1300-35Spro-GeDTC was constructed by double digests, and transgenic potato plants were obtained by Agrobacterium-mediated gene transformation. Compared with the wild-type plants, transgenic potato minituber harvested by transplanting had smaller size, lighter weight, lower organic acid content, and no significant difference in starch content. It is preliminarily induced that GeDTC is the efflux channel of tricarboxylate and related to the tuber development, which lays a foundation for further elucidating the molecular mechanism of G. elata tuber development.

Resistance of different ecotypes of Gastrodia elata to tuber rot / 中国中药杂志

Tuber rot has become a serious problem in the large-scale cultivation of Gastrodia elata. In this study, we compared the resistance of different ecotypes of G. elata to tuber rot by field experiments on the basis of the investigation of G. elata diseases. The histological observation and transcriptome analysis were conducted to reveal the resistance differences and the underlying mechanisms among different ecotypes. In the field, G. elata f. glauca had the highest incidence of tuber rot, followed by G. elata f. viridis, and G. elata f. elata and G. elata f. glauca×G. elata f. elata showed the lowest incidence. Tuber rot showcased obvious plant source specificity and mainly occurred in the buds and bottom of G. elata plants. After infection, the pathogen spread hyphae in host cortex cells, which can change the endophytic fungal community structure in the cortex and parenchyma of G. elata. G. elata f. glauca had thinner lytic layer and more sugar lumps in the parenchyma than G. elata f. elata. The transcription of genes involved in immune defense, enzyme synthesis, polysaccharide synthesis, carbohydrate transport and metabolism, hydroxylase activity, and aromatic compound synthesis had significant differences between G. elata f. glauca and G. elata f. elata. These findings suggested that the differences in resis-tance to tuber rot among different ecotypes of G. elata may be related to the varied gene expression patterns and secondary metabolites. This study provides basic data for the prevention and control of tuber rot and the improvement of planting technology for G. elata.

Meningitis tuberculosa: un desafío diagnóstico en pediatría / Tuberculous meningitis: diagnostic challenge in pediatrics

Resumen La meningitis por Mycobacterium tuberculosis es infrecuente en pediatría y su diagnóstico definitivo representa un desafío clínico. Presentamos el caso de un lactante de dos años, que presentó un cuadro de meningitis crónica. Se logró el diagnóstico tras la sospecha imagenológica y la confirmación tras la búsqueda seriada del complejo M. tuberculosis por RPC en LCR y en biopsia de tejido cerebral. A pesar de sus complicaciones, el paciente respondió favorablemente al tratamiento antituberculoso. En Chile, la tuberculosis es infrecuente en niños y los síntomas son generalmente inespecíficos. Los hallazgos en RM cerebral asociados a alteraciones del LCR permiten sospechar el compromiso meníngeo precozmente. Se recomienda iniciar el tratamiento antituberculoso empírico ante la sospecha, ya que mejora el pronóstico. A pesar de los avances diagnósticos y terapéuticos, la meningitis tuberculosa sigue teniendo una alta tasa de complicaciones y un pronóstico ominoso.

Abstract Mycobacterium tuberculosis meningitis is rare in the pediatric population and its definitive diagnosis represents a clinical challenge. We present the case of a 2-year-old infant with chronic meningitis. Diagnosis was accomplished by suggestive radiological findings and serial search for M. tuberculosis complex by real-time polymerase chain reaction (qPCR) in cerebrospinal fluid (CSF) and in brain tissue. Despite the complications, the patient evolved favorably with the tuberculosis treatment. In Chile, tuberculosis is a rare disease in children and symptoms are generally nonspecific. Brain MRI findings associated with CSF alterations allow early suspicion of MTBC. Start of empirical antituberculosis treatment upon suspicion is recommended given it is associated with better prognosis. Despite diagnostic and therapeutic advances, MTBC continues to have a high complication rate and an ominous prognosis.

Management of tuberculosis outbreaks in middle schools of Bijie City / 中国学校卫生

Objective@#To understand the management of tuberculosis outbreaks in middle schools in Bijie City, and to put forward suggestions to improve the quality of tuberculosis epidemic situation in schools.@*Methods@#A unified questionnaire was used to investigate the management of tuberculosis outbreaks in middle schools reported by tuberculosis information management system from August 27, 2018 to January 6, 2019 in Bijie City.@*Results@#The screening rate of close contacts was 69.72%(99/142), which significantly varied by counties(P<0.01). The time from the date of diagnosis of patients to screening of close contacts by local CDC was 3(1-10.5) days. Rate of standardized management process for close contacts aged 15 years or older (0) was lower than that for close contacts aged younger than 15 years old (23.08%)(P<0.01). 3 462 close contacts were screened for TB symptom,and chest X-ray among those suspected individuals(process 1), and 2 439 close contacts were screened with TB symptom,PPD test,and chest X-ray among those suspected individuals or those with strong positive in PPD test(process 2). The detection rate of pulmonary tuberculosis in close contacts of Grade I was lower in Process 1 (28.89/100 000) than in Process 2 (328.00/100 000)(χ2=6.56, P=0.01). The latent infection rate of the first-class close contacts (6.39%) was higher than that of the second-class close contacts(1.93%)(χ2=54.86, P<0.01).@*Conclusion@#Management of tuberculosis outbreaks in middle schools in Bijie City in 2018 is effective and timely, but the standardization needs to be improved.

Sweet Potato (Ipomoea batatas L): a Versatile Raw Material for the Food Industry

Abstract Sweet potato (SP) starchy roots have a broad range of colors, high-quality nutritional composition including bioactive substances (anthocyanins and β-carotene), vitamins, minerals, dietary fiber and starch. Several studies report the versatility of this root crop as part of the human diet and its possible health benefits. In this review the SP chemical composition, nutritional properties and its potential use in food processing for developing nutritious and healthy products are explored. Due to the adaptation of sweet potatoes to several agricultural managing conditions, accepting low technology /low cost with reasonable performance, it has called attention as a strong candidate of accessible functional food market.

Efecto del termofosfato sobre el crecimiento y producción de papa (Solanum tuberosum L.) / Effect of thermophosphate on the growth and production of potatoes (Solanum tuberosum L.)

RESUMEN El cultivo de papa es uno de los más representativos de los Andes colombianos. El cultivo tiene altos costos de producción, entre los cuales, la fertilización representa un 36% del total. Los avances tecnológicos en nutrición vegetal han permitido el desarrollo de nuevos compuestos, que generan una mayor asimilación y disponibilidad de los elementos nutritivos, durante los periodos productivos. Dentro de las diferentes fuentes de fósforo empleadas en Colombia, está como alternativa, el termofosfato o fosfato térmico. Por esto, el objetivo del presente trabajo fue evaluar la aplicación del termofosfato en el cultivo de papa variedad 'Superior', en condiciones de campo, en el municipio de Villa Pinzón, Cundinamarca. Se empleó un diseño completamente al azar, con 4 tratamientos, que correspondieron a diferentes porcentajes de fosfato térmico 100% fosfato diamónico (DAP) (manejo convencional); 80% DAP, 20% fosfato térmico (FT); 40% DAP, 60% FT y 20% DAP, 80% FT, (0, 300, 600 y 900kg ha-1), con tres réplicas, para un total de 12 unidades experimentales. Las variables evaluadas fueron pesos fresco y seco, de parte área y raíz, concentración de fósforo en tejido y rendimiento por calidades y total. Se observó que la aplicación de termofosfato en diferentes concentraciones generó un efecto positivo con diferencias estadísticas (P≤0,05), en todas las variables evaluadas. El tratamiento de 600kg ha-1 de termofosfato, se muestra como una alternativa para el aporte de fósforo dentro de los planes de fertilización, en busca de una mejor respuesta fisiológica y productiva del cultivo de papa.

ABSTRACT Potato cultivation is one of the most representative activities of the Colombian Andes. The crop has high production costs, among which fertilization represents 36% of the total Technological advances in plant nutrition have allowed the development of new compounds that generate greater assimilation and availability of nutritional elements during productive periods. Within the different phosphorus sources available in Colombia, thermophosphate exists as an alternative. For this reason, the objective of this research was to evaluate the application of thermophosphate in the potato crop, Superior 'variety, under field conditions in the municipality of Villa Pinzón-Cundinamarca. A completely randomized design was used with 4 treatments that corresponded to different percentages of thermal phosphate: 100% diammonium phosphate (DAP) (conventional management); 80% DAP, 20% thermal phosphate (TF); 40% DAP, 60% TF and 20% DAP, 80% TF (0, 300, 600 y 900kg ha-1), with three replicas for a total of 12 experimental units. The variables evaluated were fresh and dry weights of areal and root part, phosphorus concentration in tissue and yield by qualities and the total. It was observed that the application of thermophosphate at different concentrations generated a positive effect, statistically different (P≤0.05) in all the variables evaluated. Thermophosphate, at 600kg ha-1 was found to be an alternative for the contribution of phosphorus within the fertilization plans, in search of a better physiological and productive response of the potato crop.

Operative Management of Calcaneal Fractures using Mippo Technique

Introduction: Calcaneal fractures continues to be a topic ofcontroversy in terms of the optimal management modality.Current study aimed to access the sinus tarsi approach forthe fixation of calcaneal fractures in terms of radiological andfunctional results.Material and Methods: Study was conducted on 30 patientsof both genders aged between 20 and 60 years with both jointdepression and tongue type fractures, Sanders type 2 and type3 fractures.Results: In our study, as per AOFAS Scale at 3 months, 19(63.33%) calcaneum cases fell into the excellent group, 9 (30%)into good and 2(6.66%) into poor result group. The Mean ±SDAOFAS scale was 78.43±7.17 (range 55-85). At 6 months, theresult as per AOFAS scale showed further improvement with 28(93.33%) calcaneum cases falling into the excellent group and 2(6.66%) falling into the good result group. None of them fell inpoor group at 6 months follow up. The Mean ±SD AOFAS scalewas 90.03±5.24 (range 74-95).Conclusion: Fixation with plate using MIPPO techniquethrough sinus tarsi approach is an effective and safe methodwith good clinical and radiological results, for the treatmentof calcaneal fractures; to achieve anatomical restoration undervision, stable fixation and early mobilization with minimal softtissue complications.

Health values of cassava compared to wheat and yam in relation to diabetes and dyslipidaemia management

The objective of the study was to evaluate how diabetes and dyslipidaemia can be managed by increasing the consumption of root and tuber crops such as cassava and yam. Journal literatures based on research reports as well as institutional publications and databases on nutritional values of various foods were reviewed. Critical reviews were also performed to synthesize a comparison between the various foods, especially in terms of their fibre values. The critical review shows that guidelines devoted six pages to protein-energy malnutrition and another seven pages on micronutrients. However, there is no mention of the dietary fibre values of the staple root and tuber food crops. From the narrative review, previous report showed that carbohydrate or fibre and fat or fibre ratios are negligible in the raw products, but highest in wheat flour and higher in yam relative to cassava flour. A further comparative review in terms of proximate analysis of the foods elaborates that unprocessed wheat is high in crude protein, carbohydrate and fibre. Thus, the extent or nature of processing is a key factor. Whether wheat has better health value over root and tuber crops has neither being expatiated, nor cassava and yam acknowledged as having any medical value relative to wheat. Since fat is pro-obesity and pro-diabetic while fibre is anti-dyslipidaemic; the foods based on processed wheat flour may possess the least pharmacological values relative to the indigenous carbohydrate food crops. This report provides indication of medical nutrition therapy potentials of indigenous carbohydrate food crops in Delta state of Nigeria

Efficacy and Safety of Linezolid Combined with Routine Anti-tuberculosis Drugs for Tuberculous Meningitis ： A Meta-analysis / 中国药房

OBJECTIVE：To systematically evaluate the efficacy and safety of linezolid （LZD）combined with routine anti- tuberculosis drugs in the treatment of tuberculous meningitis （TBM），so as to provide evidence-based reference for clinical medi- cation. METHODS ：Retireved from PubMed ，Cochrane Library ，Embase，CNKI and Wanfang database ，randomized controlled trials（RCT）of LZD combined with routine anti-tuberculosis drugs （trial group ）versus routine anti-tuberculosis drugs （control group）were collected from the inception to Jan. 2020. After literature screening and data extraction ， the quality of the included literature were evaluated with bias risk assessment tool recommended by Cochrane system evaluator handbook 5.2. Meta-analysis was conducted by using Rev Man 5.3 software，and sensitivity analysis and publication bias analysis were performed. RESULTS ： Totally 9 RCTs involving 602 patients were included. Meta-analysis showed that total response rate [OR ＝4.05，95％CI（2.26，7.26）， P＜0.000 01]， changes of protein content of cerebrospinal fluid [MD ＝0.48，95％CI（0.20，0.77），P＝0.000 8]，changes of white blood cells count of cerebrospinal fluid [MD ＝44.43，95％CI（20.06，68.81），P＝0.000 4]，changes of cerebrospinal fluid glucose/ synchronous blood glucose [MD ＝0.09，95％CI（0.05，0.14），P＜0.000 1] of trial group were significantly higher than those of control group. There was no statistical significance in the changes of chloride content of cerebrospinal fluid [MD ＝8.08，95％CI（－0.64， 16.80），P＝0.07] and the incidence of ADR [OR ＝1.34，95％CI（0.57，3.11），P＝0.50] between 2 groups. The results of sensitivity analysis showed that there were significant differences comparison with before exclusion when the change of protein content in cerebrospinal fluid and the change of glucose/synchronous blood glucose in cerebrospinal fluid were taken as indexes ，and there was no significant difference comparison with before exclusion when the changes of white blood cell count and chloride content in cerebrospinal fluid were taken as indexes. The results of publication bias analysis showed that there was a certain publication bias in this study. CONCLUSIONS ：LZD combined with conventional anti-tuber culosis drugs is effective and safe for TBM. Because the inconsistent results of sensitivity analysis and publication bias exists in publication bias analysis ，the conclusions need to be further confirmed by more large sample and multi-center studies.

Alternative Process for Production of Sweet Potato Distilled Beverage

Abstract Shochu is the most widely consumed spirit in Japan. In its manufacture is used koji, a solid fungus culture traditional of the Asian countries, but that makes the production process slow. Shochu can be produced from a variety of starchy sources, including sweet potato. About 7% of the world's sweet potato production is wasted due to imperfections that make it unsuitable for consumption. However, this material can be used in ethanol production. Considering the high productivity of sweet potato in Brazil, an opportunity to add value to this raw material is perceived. An alternative process for the production of sweet potato distillate similar to shochu was proposed. Koji was replaced by a mixture of alpha-amylase and glucoamylase. Process time was reduced from 14 to only 1 day. Composition analyses were performed by HPLC and GC. The experimental yield of alcoholic fermentation using pectinase enzyme reached 67.31-73.65%, but methanol was above the limits of the legislation. Without the addition of pectinase, no methanol was formed. However, there was a decrease in yield (51.65-54.75%), due to the incomplete disintegration of sweet potatoes. The distillate produced and the commercial shochu presented the same absorption bands in FTIR analysis, identifying the similarity between them.

Development of Growth Models Based on Years for Salep Orchid Planted in Natural Environment

Abstract The orchids that produced tuber are known as salep orchids and have been collected from nature for centuries as a medicinal and aromatic plant. These orchids are endangered species because of their limited vegetative and generative production possibilities. Salep orchids, seed germination has been achieved with in-vitro studies, but no source has been found regarding the development of germinated seeds over the years. In this study, Dactylorhiza euxina (Nevski) Czerep. was used as research material. Seeds that were determined to germinate in nature were observed to develop in their own environment for five years and some morphological characteristics (plant height, number of leaves, leaf length, leaf width, total weight, tuber width, and tuber weight) were determined at the end of each vegetation year. Plants that start to develop with seed germination produce one leaf and a tuber of 0.115 g in the first year. When the tubers obtained from the first year were planted again, the plants was obtained 2-3 leaves and they were formed 0.465 grams of tubers. In the third year plants bloom for the first time. The period until flowering in the plant was called maturity period and Dactylorhiza euxina (Nevski) Czerep. was found to have a 3-year maturity period. Plants produced tuber 0.850 g in the third year, 1.585 g in the fourth year and 2.522 g in the fifth year. According to the mathematical modeling, the relationship between year (Y) and fresh tuber weight (FTW) was found Y = 1.22 + (1.61 × FTW) and there was a significant relationship among year, fresh tuber weight, and total biomass (TBM). This equation Y = 1.05 + (0.76 × FTW) + (0.14 × TBM) shows us the mathematical relations of year, fresh tuber weight, and total biomass. The mathematical relations among to fresh tuber weight, total biomass, and plant height (PH) was produced Y = 1.74 - (0.11 × FTW) + (0.57 × TBM) - (0.09 × PH). R2 values were found 0.95-0.99. All R2 values and standard errors were found to be significant at the p < 0.01 level.

Effects of Drying Methods on Physico-chemical Properties of Hydrocolloids Isolated from Peel Flour of Some Selected Root and Tuber Crops

Hydrocolloids isolated from the flour of peels of selected root and tuber crops were purified and their physicochemical properties were determined using standard procedures. The experimental materialused was the peels of three species of Dioscorea: alata(water yam), dumentorum(trifoliate yam), rotundata (white yam) and bulbifera(aerial yam); Colocasia esculenta(cocoyam); white and yellow flesh of Ipomoea batatas(sweet potato). The fresh peels were dried under three drying method (oven, sun and air-dried). Proximate composition gave 4.4 to 10.7% for moisture content, 0.40 to 6.10% for ash content, 0.32 to 4.13% for crude fibre and in carbohydrates it ranges from 81.3 to 93.7%. There were no fat and protein in the experimental samples. Oven-dried alatapeel flour gave the highest swelling indexvalue 1.44% while, air-dried had the highest value of (4.00%) ranking the highest in foaming capacities. The highest in water and oil absorption capacities were sun-dried (2.05) dumentorumpeel and rotundatapeel air-dried (2.21). In emulsifying capacity and freezing-thawing stability, the highest results were observed in colocasia peel oven-dried (54.3%) and white flesh Ipomoea batataspeel sun-dried (74.3%).Yellow flesh Ipomoea batatas(0.31 g/ml) gave the lowest in bulk density. Gelation temperature ranges from 70 to 83ºCwith pH of 6.6 to 7.6.

Rapid Multiplication Technique for Production of High-Quality Seed Potato (Solanum tuberosum L.) Tubers

Potato farmers in India and other developing countries lack timely availability of healthy and good quality potato seed tubers. This is mainly due to conventional seed multiplication techniques which, has suffered inherently from low multiplication rates. The soil medium is generally used for seed tuber production. In order to overcome bottlenecks, a study was conducted to evaluate mini-tuber production potential for selected baskets of potato varieties in different soil-less solid media types compared with soil as a control. Soil-less media technique would also assist in planning for economical and rapid seed multiplication program, along with pathogen-free seed tubers, which will increase production of good quality reliable seed material in the country. This will finally ensure increased productivity of potato crop. With these objectives, an experiment was conducted during the years, 2015–2016 and 2016–2017. Three different soil-less solid propagation media (kalpeat plus, soilrite mix and soilrite mix TC) were tested against control (soil:sand 3:1); for five different varieties (1001, 1002, 1003, 1004 and 1005). Plantlets grown on soilrite mix performed better with higher mini-tuber yield of 548.58 gm/ container (1/2 m²), while for other propagation media, 283.39 gm/container (1/2 m²), 96.08 gm/container (1/2 m²), and 52.61 gm/container (1/2 m²) respectively, were observed for kalpeat plus, soilrite mix TC and control (soil:sand 3:1). Among the varieties tested, viz., 1005 and 1004 produced maximum mini-tubers, between 9 tubers/plant and 5 tubers/plant respectively. Soilrite mix increased the number and size of mini-tubers. Thus, this study concluded that soil-less solid media induced seed potato multiplication is better than traditional soil-based techniques

Suspension Culture and Alkaloid Content of Pinelliae Rhizoma Tuber Under Stimulation of Salicylic Acid / 中国实验方剂学杂志

Objective: To study the suspension culture of tuber and its alkaloid content based on the stimulation of salicylic acid. Method: The tubers of Pinelliae Rhizoma in suspension tube were treated with different concentrations of exogenous salicylic acid to analyze the growth status. The content of alkaloids in tuber was detected by HPLC. Test conditions:chromatographic column for Agilent Eclipse plus C18 column (4.6 mm×250 mm,5 μm),mobile phase of acetonitrile water(4:96),the column temperature was maintained at 35℃,detection wavelength for inosine 250 nm,guanosine 260 nm,volume flow rate 1.0 mL·min-1. Result: The results showed that the exogenous salicylic acid had a certain effect on the growth of suspension tuber of Pinelliae Rhizoma. When the salicylic acid concentration was 150 μmol·L-1,the culture lasted for 25 days and the fresh weight reached the maximum value of 7.483 8 g. It also accumulates a certain amount of alkaloids. The linear range of guanosine was 0.03-0.45 μg (R2=0.999 6). After 10-days cultivatation in the salicylic acid concentration of 50 μmol·L-1,guanosine content of Pinelliae Rhizoma tubers reached a maximum of 1.353 3 mg·g-1. The linear range of inosine 0.003-0.045 μg (R2=0.999 5). When the salicylic acid concentration was 200 μmol·L-1,cultured for 30 days,the content of inosine in Pinelliae Rhizoma tubers reached the maximum value of 0.149 8 mg·g-1. Conclusion: The results of this experiment provide a reference for the study of tissue culture and rapid propagation of Pinelliae Rhizoma tubers and regulation of alkaloids,which are of great significance for the development of Pinelliae Rhizoma industry.

Tuber borchii Shapes the Ectomycorrhizosphere Microbial Communities of Corylus avellana

In this study, eight-month-old ectomycorrhizae of Tuber borchii with Corylus avellana were synthesized to explore the influence of T. borchii colonization on the soil properties and the microbial communities associated with C. avellana during the early symbiotic stage. The results showed that the bacterial richness and diversity in the ectomycorrhizae were significantly higher than those in the control roots, whereas the fungal diversity was not changed in response to T. borchii colonization. Tuber was the dominant taxon (82.97%) in ectomycorrhizae. Some pathogenic fungi, including Ilyonectria and Podospora, and other competitive mycorrhizal fungi, such as Hymenochaete, had significantly lower abundance in the T. borchii inoculation treatment. It was found that the ectomycorrhizae of C. avellana contained some more abundant bacterial genera (e.g., Rhizobium, Pedomicrobium, Ilumatobacter, Streptomyces, and Geobacillus) and fungal genera (e.g., Trechispora and Humicola) than the control roots. The properties of rhizosphere soils were also changed by T. borchii colonization, like available nitrogen, available phosphorus and exchangeable magnesium, which indicated a feedback effect of mycorrhizal synthesis on soil properties. Overall, this work highlighted the interactions between the symbionts and the microbes present in the host, which shed light on our understanding of the ecological functions of T. borchii and facilitate its commercial cultivation.