Occurrence and identification of Penicillium and Talaromyces species from beach sand

Aims@#Penicillium and Talaromyces were among the species of microfungi that inhabit beach sand in Batu Ferringhi Beach, Penang Island, Malaysia. Previously, Talaromyces was described as the sexual stage of Penicillium, but both are now accepted as separate genera based on molecular phylogeny. The aim of the present study was to identify species of Penicillium and Talaromyces that are present in beach sand in Malaysia.@*Methodology and results@#Species identities were confirmed according to similarities of the internal transcribed spacer regions and β-tubulin gene sequences and a phylogenetic analysis based on both regions/gene. Nine Penicillium spp. were identified as P. georgiense, P. chermesinum, P. pimiteouiense, P. citrinum, P. oxalicum, P. daleae, P. rolfsii and Penicillium sp. and the four Talaromyces spp. were T. siamense, T. atroroseus, T. minioluteus and T. fusiformis.@*Conclusion, significance and impact of study@#These findings showed that beach sand harboured a variety of Penicillium and Talaromyces species. The occurrence of Penicillium and Talaromyces in beach sands is associated with the organic matter in the sand, which provides suitable substrates and nutrient sources. Due to this, beach sand might harbour many potentially pathogenic or opportunistic species that may pose a health concern to immunocompromised individuals.

Colletotrichum spp. associated with agricultural crops in Malaysia, causal pathogens and potential control methods

ABSTRACT@#Colletotrichum is one of the most significant and common plant pathogens, infecting many economically important crops worldwide. Colletotrichum is also one of the most studied fungal genera in Malaysia because it contains many species that infect various types of agricultural crop including fruit, vegetable and industrial crops. Studies on Colletotrichum spp. are mostly focused on the causal pathogens, the host range and disease management. Among the host crops, most studies on Colletotrichum spp. have been conducted on infection in chilli (Capsicum spp.), which, in Malaysia, first arose in the 1980s and still continues to be a problem to this day. Studies have also been conducted on Colletotrichum spp. associated with anthracnose in fruit crops including dragon fruit, papaya, banana and mango. Disease management of anthracnose pathogens postharvest has also been conducted to prolong the shelf life of these fruit crops. In this review, Colletotrichum spp. associated with chilli and several fruit crops as well as their disease management are highlighted. There have been many changes in Colletotrichum taxonomy and systematics in recent years, affecting the identification of anthracnose pathogens reported in Malaysia. Colletotrichum species identified solely by morphology or solely via the internal transcribed spacer (ITS) region should be referred to as sensu lato (in the broad sense) since many species belong to species complexes. Species within a species complex are closely related, and most are cryptic species particularly species in the C. gloeosporioides and C. acutatum complexes which are commonly associated with agricultural crops in Malaysia. Due to the importance of Colletotrichum spp. as plant pathogens, up-to-date identification methods should be used since accurate species identification of Colletotrichum is crucial for formulating suitable disease management programmes as well as for plant quarantine and biosecurity purposes. This review provides the current knowledge on the status of Colletotrichum spp. associated with agricultural crops in Malaysia and potential control methods on different types of agricultural crops.

Aspergillus species from groundnuts (Arachis hypogaea) and mycotoxin production by toxigenic species

Aims@#Groundnut is an important food crop and is susceptible to contamination by Aspergillus. The present study was conducted to identify Aspergillus spp. from groundnuts as well as to detect mycotoxin production by toxigenic species. @*Methodology and results@#Molecular identification using ITS region, β-tubulin and calmodulin genes identified six species, A. niger, A. tubingensis, A. flavus, A. aculeatus, A. sydowii and A. fumigatus. Phylogenetic tree of combined sequences showed the isolates from the same species were grouped with reference strains in the same clade, thus the species identity was confirmed. Detection of mycotoxin biosynthesis genes can give an indication of mycotoxin production. Two ochratoxin A genes, PKS15KS and PKS15C-MeT were detected in seven A. niger isolates but none of the isolates produced ochratoxin A when quantification was conducted using Ultra-High Performance Liquid Chromatography. Two aflatoxin B1 biosynthesis genes, Nor-1 (norsolorinic acid) and Ver-1 (Versicolorin) genes were detected in A. flavus but only KDH7 and KL27b isolates produced aflatoxin B1 with concentrations of 1.0 μg/g and 1.1 μg/g, respectively. @*Conclusion, significance and impact of study@#Various species of Aspergillus found on groundnuts may lead to potential mycotoxin contamination as toxigenic species were also recovered. The occurrence of Aspergillus spp. can reduce the quality of the legumes as well as reducing their shelf life.

Preliminary study on the effects of fusaric acid treated protocorm-like bodies of Dendrobium hybrid against Fusarium proliferatum and Fusarium oxysporum

Aims@#Dendrobiums are majorly affected by Fusarium proliferatum and F. oxysporum. The aim of this research was to utilise the mycotoxin, fusaric acid (FA) on Dendrobium hybrid to produce cultivars that are resistant towards these fungi. @*Methodology and results@#FA of concentrations 0.05, 0.10, 0.15 and 0.20 mM were transferred to sterilised half-strength Murashige and Skoog (MS) medium and inoculated with four weeks old thin cell layer (TCL) of protocorm-like bodies (PLBs) for eight weeks. It was deduced that PLBs treated with 0.10 mM of FA resulted in highest survival and shoot regeneration rate but the survival and regeneration rate began to decline as the concentrations of FA were increased. Histology and scanning electron microscopy (SEM) observation showed prominent cell damage and stomatal closure in PLBs treated with FA. Direct amplification of minisatellite DNA (DAMD) markers showed polymorphism in the FA treated PLBs compared to the control PLBs. In the leaf bridge bioassay, plantlets treated with 0.05 mM of FA showed most resistance towards both fungal species. @*Conclusion, significance and impact of study@#Therefore, this research is a preliminary screening study where the optimum concentration of FA was selected based on the reaction of treated TCL of PLBs towards these mutagens.

Identification and Characterization of Macrophomina phaseolina Causing Leaf Blight on White Spider Lilies (Crinum asiaticum and Hymenocallis littoralis) in Malaysia

Crinum asiaticum and Hymenocallis littoralis, commonly known as spider lilies are bulbous perennial and herbaceous plants that widely planted in Malaysia as ornamental. During 2015–2016, symptom of leaf blight was noticed on the hosts from several locations in Penang. The symptom appeared as irregular brown to reddish lesions surrounded by yellow halos. As the disease progressed, the infected leaves became blighted, dried, and fell off with the presence of black microsclerotia and pycnidia on the lesions parts. The present study was conducted to investigate the causal pathogen of leaf blight on C. asiaticum and H. littoralis. Based on morphological characteristics and DNA sequences of internal transcribed spacer (ITS) region and translation elongation factor 1-alpha (TEF1-α) gene, the causal pathogen was identified as Macrophomina phaseolina. Phylogenetic analysis of combined dataset of ITS and TEF1-α grouped the isolates studied with other isolates of M. phaseolina from GenBank. The grouping of the isolates was supported by 96% bootstrap value. Pathogenicity test proved the role of the fungus in causing leaf blight on both hosts.

The pathogen and control management of rice blast disease

Abstracts@#Outbreak of rice blast disease is a serious problem in all rice growing regions worldwide and is a threat to rice production. In Malaysia, the outbreak of rice blast is a recurrent problem where rice plant remain vulnerable to the disease. Nowadays, the generic name of rice blast pathogen is Pyricularia oryzae and Magnaporthe oryzae is the synonym. Rice pathogen infects mainly aerial parts of rice plant causing rotting and blast on the leaves, stems, peduncles, panicles and seeds leading to crop failure. Rice blast pathogen population is regarded as highly variable and consisted of multiple pathotypes which contribute to genetic diversity as well virulence diversity of the pathogen. The pathotypes can only be determined through pathogenicity test using a set of differential rice cultivars which generally differ by one or more resistance genes. Knowledge on the rice blast virulence and host resistant is important to manage the disease. Among the control methods, utilizing resistant cultivars is considered as the most effective approach to manage rice blast disease. Therefore, development of blast resistant cultivar becomes a priority.

Characterization of two xerophilic Aspergillus spp. from peanuts (Arachis hypogaea)

@#Aims: Xerophilic Aspergillus spp. promote the growth of toxigenic species. Since mycotoxins are toxic to human andanimal, identification of these species is important.Methodology and results: Two xerophilic species isolated from peanuts (Arachis hypogaea) were identified based onmorphological characteristics, molecular identification, and phylogenetic analysis using internal transcribed spacerregion, β-tubulin, and calmodulin sequences.Conclusion, significance and impact of study: The occurrence of A. chevalieri and A. amstelodami on peanutsprovides favorable growth conditions for less xerophilic Aspergillus as well as other spoilage-related fungal genera,particularly mycotoxin-producing species that could lead to mycotoxin contamination. The occurrence of A. chevalieriand A. amstelodami on peanuts might also reduce shelf life and affect the quality of the kernels. To our knowledge, thisis the first report of the occurrence of A. chevalieri and A. amstelodami on a food product in Malaysia, and the finding ofthis study contributes to the repertoire of Aspergillus species that are associated with food products.

A Cross Sectional Study to Explore Factors Affecting Adolescent-Parents Attachment in a Rapidly Developing Society in Malaysia

@#Introduction: Secure attachment to parents prevents adolescents from externalizingbehaviours especially in developing countries. The aim of this study was to identify thecontributors to parental attachment in a developing society. Methodology: This crosssectional study was performed on urban secondary students (aged between 13 and 17 years)based on multistage sampling in Pasir Gudang District, Johor, Malaysia. The depression,anxiety and stress (DASS-21) and Inventory of parent and peer attachment (IPPA)questionnaires were used along with a questionnaire for demographic information. Analysisof covariance (ANCOVA) was used to identify the main effect of study parameters on IPPAscores for father and mother. Results: A total of 2980 students (46.9% male and 53.1%female) participated in this study. Mean and SD for age was 14.39±1.28. Depression scoreand school form had a significant main effect on both paternal and maternal attachment(p<0.05). Age (p=0.003), ethnicity (p=0.01), history of intimate relationship (p=0.03),paternal education level (p=0.006) and maternal education level (p=0.04) had a main effecton paternal attachment, while gender (p=0.02) and stress (p=0.001) were shown to havesignificant main effect on maternal attachment. Discussion: The findings of this studyrevealed different contributors for adolescent attachment with father and mother. Local,cultural and economic structure of the community should be taken into account in order toplan for an intervention strategy to secure adolescent’s relationship with parents.

Psychosocial Problem and its Associated Factors Among Adolescents in the Secondary Schools in Pasir Gudang, Johor

Introduction: Adolescence is a crucial period with impressive emotional changes. Emotional disorders such as depression, anxiety and stress are high among adolescents worldwide; however the psychosocial changes are often neglected. The aim of the current study was to determine the depression, anxiety and stress symptoms and their associated factors among adolescents. Methods: A cross-sectional study using cluster sampling was carried out among school-going adolescents in 10 secondary schools in Pasir Gudang, Johor, Malaysia. Respondents answered a self-administered questionnaire including socio-demographic, Inventory of Parent and Peer Attachment (IPPA), Depression Anxiety Stress Scale-21 (DASS-21) and Strength and Difficulties Questionnaire (SDQ). Using SPSS-21, chi-square test and binomial logistic regression were conducted to examine the associations between dependent and independent variables. Results: Respondents (52.6% female and 53.9% Malay) had 46.0% prevalence of depression symptoms, 59.1% anxiety, 38.1% stress and 45.6% psychosocial status (internalizing and externalizing problems). Age, father occupation and parental bonding were significantly predicted having moderate to extremely severe depression symptom (p<0.05). Younger adolescents (13-14 years old) were 1.42 times more likely to have anxiety symptom. In addition, respondents with insecure father attachment were 1.5 times more likely to have stress symptom (p<0.05). Respondents with insecure parental attachment were more likely to have psychosocial problem (p<0.05). Conclusions: Depression, anxiety and stress of adolescents were influenced by the sociodemographic of adoleascents and their parents. Age, gender and parental attachment were the significant predictors in the current study which should be the center of attention for the future studies to reduce the psychological disorders among adolescents.

A Cross-sectional Study of Ovarian Cancer Knowledge and Its Determinants among Female Employees in a Public University, Malaysia

Introduction: Ovarian cancer is recognizable as the fourth leading cancer in Malaysia. Knowledge on ovarian cancer is low among Malaysian women, which may affect their interpretation of early symptoms and delay presentation of ovarian cancer cases. The aim of this study was to determine the level of ovarian cancer knowledge and its determinants among female nonacademic staff in Universiti Putra Malaysia, Serdang, Malaysia. Methods: Across- sectional study was designed to collect the data from 366 participants via a validated self-administered questionnaire, from April to July 2015. Results: The mean age of participants was 34 ± 7.89. Most of the sample was Malay (96.4%), married (61.5%). A total of 51.4% of respondents reported low knowledge level. Knowledge of ovarian cancer was significantly associated with marital status (p<0.001), age (p=0.03), interest to know about ovarian cancer (p<0.001) and level of education (p= 0.02) . Participant’ age and having heard or read about ovarian cancer were predictors to low knowledge, with the odds ratios of (OR=1.031, 95% CI= 1.002-1.061, P=0.03) and (OR=0.549, 95% CI= 0.356-0.846, P < 0.00) respectively. Conclusion: Our findings showed that more than half of female nonacademic staff in UPM was not well knowledgeable about ovarian cancer, which needs an educational intervention to improve knowledge among this group.

Expectant Management of Missed Miscarriage

Early pregnancy losses occur in 10-20% of all pregnancies. Surgical evacuation has always been the mainstay of management of miscarriages. The main aim of this study was to understand the success rate of expectant management of miscarriage with regards to gestational sac size and period of gestation. The secondary outcome was to measure the satisfaction level and the rate of pregnancy after 6 month of expectant management. Patients diagnosed with missed miscarriages were requested to choose between expectant or surgical management. Those decided for expectant management on “wait and watch” approach were assessed weekly up to 5 completed weeks until complete miscarriage was achieved spontaneously. Surgical evacuation was performed if medically indicated or requested by the patients at any time or at the end of fifth week if complete miscarriage was not achieved. Out of 212 cases, 75 (35.4%) opted for expectant management. Complete miscarriage was achieved in 85.3% of subjects by the end of fifth weeks respectively. Mean of Gestational sac size and period of gestation was not found to influence the success rate of complete spontaneous miscarriage in the expectant management. No morbidity was recorded during the five weeks of the study period. Mean satisfaction score was 9.7±8.3. Pregnancy occurred in 47% of patients within 6 months follow up. The Receiver operation characteristic (ROC) curve analysis suggested the end of second week as the cut off for surgical intervention. This study revealed that expectant management of missed miscarriage is a reliable management of missed miscarriage within the first two weeks.

Occurrence of microfungi on several dried fruits

Aims: Dried fruits may harbour a variety of fungi especially those that can grow in low water activity conditions. Knowledge on the occurrence of fungi on dried fruits is an important step to predict the possibility of mycotoxin contamination, thus the present study was conducted to determine the occurrence of fungi on dates, figs, kiwi and raisins. Methodology and results: Based on morphological characteristics, six genera of fungi comprising eight species, Aspergillus niger, A. flavus, Penicillium corylophilum, P. glabrum, Chaetomium globosum, Fusarium sacchari, Acremonium strictum and Mycelia sterilia were identified. Three most commonly species isolated were A. niger (19 isolates), P. corylophilum (seven isolates) and A. flavus (five isolates). The less common species were C. globosum (three isolates), Mycelia sterilia (three isolates), A. strictum (one isolate) and P. glabrum (one isolate). Conclusion, significance and impact of study: Common mycotoxin producer are the fungi from the genera Aspergillus, Penicillium and Fusarium. The occurrence of toxigenic fungi on dates, figs, kiwi and raisins suggested that some of these fungi may be an important source of mycotoxin contamination.

Assessment of multifunctional biofertilizer on rice seedlings (MR 219) growth in a greenhouse trial

Aims: Food security and safety are current issues around the world. Rice is a staple food for a large portion of the world’s population, and in Malaysia around 2.2 million tonnes of rice were consumed annually. Fertilizer input is the key to increase rice production. Malaysian Nuclear Agency (Nuclear Malaysia) has developed multifunctional biofertilizer products in an effort to reduce dependency on chemical fertilizers for crop production. Methodology and results: Multifunctional biofertilizer products contain indigenous microorganisms that have desired characteristics, which include plant growth promoting, phosphate solubilising, potassium solubilising and enhancing N2- fixing activity were used in this study. These products were formulated as liquid inoculants, which is suitable for rice production. A greenhouse trial was conducted to evaluate the effectiveness of multifunctional biofertilizer on rice. Multifunctional biofertilizer products were applied singly and in combination with rock phosphate, feldspar and irradiated oligochitosan from a project by Forum for Nuclear Cooperation in Asia (FNCA), Japan. Plants that were given chemical fertilizers and plants not receiving fertilizer or biofertilizer products were used as controls. Fresh and dry weights of rice seedlings were determined. Application of multifunctional biofertilizer combined with irradiated oligochitosan (T3) resulted in significantly higher fresh weights (97.12 g) and dry weights (84.16 g) as compared to non-treated plants (77.39 g fresh weights and 69.56 g dry weights). The results suggested that application of multifunctional biofertilizer in combination with irradiated oligochitosan could increase rice growth. Conclusion, significance and impact of study: Combination of biofertilizer with oligochitosan increased rice growth in greenhouse trial. Further investigation of this interaction phenomenon should be carried out.

Predictor of cardiovascular risks in end stage renal failure patients on maintenance dialysis

Objective: Cardiovascular disease [CVD] is the main cause of morbidity and premature mortality in end stage renal failure patients [ESRD] receiving dialysis. The aim of our study was to evaluate the impact of various risk factors in this group of high CVD risk patients in local population

Methods: We carried out a cross-sectional retrospective study in a single hospital. A total of 136 ESRF patients, consisted of 43 haemodialysis [HD] and 93 continuous ambulatory peritoneal dialysis [CAPD] patients, were recruited and followed up for 36 months duration. Midweek clinical and laboratory data were collected. The occurrence of existing and new CVD events was recorded

Results: Multiple Logistic Regression showed pre-existing cardiovascular event [odds ratio, 4.124, 95% confidence interval [CI], 0.990 to 17.187], elevated total cholesterol level [odds ratio, 0.550, 95% CI, 0.315 to 0.963], elevated serum phosphate level [odds ratio, 5.862, 95% CI, 1.041 to 33.024] and elevated random blood glucose level [odds ratio, 1.193, 95% CI, 1.012 to 1.406] were significantly associated with occurrence of CVD events

Conclusions: History of cardiovascular event before the initiation of dialysis, elevated level of serum phosphate and random blood glucose levels are the risk factors of CVD whereas paradoxically a high total cholesterol level has CVD protective effect towards the ESRF patients

The First Report of Penicillium georgiense in Malaysia

Penicillium georgiense was isolated from sandy beach soil from Batu Ferringhi beach, Penang Island, Malaysia. The identification was based on morphological characteristics and phylogenetic analysis of internal transcribed spacer regions and beta-tubulin sequences. To the best of our knowledge, this is the first report of P. georgiense in Malaysia.

Determinants of Nutritional Status in Children living in Mashhad, Iran

Children are one of the most vulnerable groups to sub-optimal nutritional intake in most societies. We have investigated some of the potential determinants of malnutrition in children of 2-5 years of age. A cross sectional study was conducted to determine the relationship between nutritional status [weight for age, height for age and weight for height] and dietary and socioeconomic factors in 671 children [24-59 months of age] from selected health centers in Mashhad city, Iran. Children were assessed for weight and height and the care givers were interviewed and a questionnaire was completed by the interviewers. The data were analyzed using SPSS13 software and the Z-scores were calculated using the WHO anthropometric software package. The study showed that 24.4% of children were mildly underweight, 4.3% were underweight, 13% were mildly stunted, 23.6% of children were mildly wasted and 3.1% were stunted. Educational attainment, whether the children had been breast feed, average daily consumption of milk, feeding practices and type of first food were found to be the main factors determining nutritional status in our study. A higher daily consumption of milk, lower age at which first solid food was started; lower age for consumption of meat and good feeding practices may resolve malnutrition in this population. These findings support the need for a family-based prevention program that focus on guiding parents to foster appropriate feeding practices as well as to promote healthy food intake in the children. Future research should determine the cost-effectiveness of both short- and long-term interventions for child malnutrition

Morphological and molecular characterization of Fusarium. solani and F. oxysporum associated with crown disease of oil palm

Crown disease (CD) is infecting oil palm in the early stages of the crop development. Previous studies showed that Fusarium species were commonly associated with CD. However, the identity of the species has not been resolved. This study was carried out to identify and characterize through morphological approaches and to determine the genetic diversity of the Fusarium species. 51 isolates (39%) of Fusarium solani and 40 isolates (31%) of Fusarium oxysporum were recovered from oil palm with typical CD symptoms collected from nine states in Malaysia, together with samples from Padang and Medan, Indonesia. Based on morphological characteristics, isolates in both Fusarium species were classified into two distinct morphotypes; Morphotypes I and II. Molecular characterization based on IGS-RFLP analysis produced 27 haplotypes among the F. solani isolates and 33 haplotypes for F. oxysporum isolates, which indicated high levels of intraspecific variations. From UPGMA cluster analysis, the isolates in both Fusarium species were divided into two main clusters with the percentage of similarity from 87% to 100% for F. solani, and 89% to 100% for F. oxysporum isolates, which was in accordance with the Morphotypes I and II. The results of the present study indicated that F. solani and F. oxysporum associated with CD of oil palm in Malaysia and Indonesia were highly variable.

A New Record of Penicillium pimiteouiense from Beach Soil in Malaysia

Three isolates of Penicillium pimiteouiense were recovered from sandy beach soil samples in Penang Island, Peninsular Malaysia. All the isolates were identified based on morphological characteristics and phylogenetic analysis of internal transcribed spacer regions and beta-tubulin gene. This is a first record of P. pimiteouiense in Malaysia.