A Mini Review of Citrus Rootstocks and Their Role in High-Density Orchards.

Dwarfing is an important agricultural trait for intensive cultivation and effective orchard management in modern fruit orchards. Commercial citrus production relies on grafting with rootstocks that reduce tree vigor to control plant height. Citrus growers all over the world have been attracted to dwarfing trees because of their potential for higher planting density, increased productivity, easy harvest, pruning, and efficient spraying. Dwarfing rootstocks can be used to achieve high density. As a result, the use and development of dwarfing rootstocks are important. Breeding programs in several countries have led to the production of citrus dwarf rootstocks. For example, the dwarfing rootstocks 'Flying Dragon', 'FA 517', 'HTR-051', 'US-897', and 'Red tangerine' cultivated in various regions allow the design of dense orchards. Additionally, dwarf or short-stature trees were obtained using interstocks, citrus dwarfing viroid (CDVd) and various chemical applications. This review summarizes what is known about dwarf citrus rootstocks and the mechanisms underlying rootstock-scion interactions. Despite advances in recent decades, many questions regarding rootstock-induced scion development remain unanswered. Citrus rootstocks with dwarfing potential have been investigated regarding physiological aspects, hormonal communication, mineral uptake capacity, and horticultural performance. This study lays the foundation for future research into the genetic and molecular mechanisms underlying citrus dwarfing.

Recurrent Urinary Tract Infection in a Renal Transplant Patient by Pan-resistant Myroides Spp.

The myroides bacteria species are multidrug-resistant gram-negative aerobic bacilli. The genus myroides comprises two species, i.e., M. odoratimimus and M. odoratus, and is usually associated with infections in immunocompromised patients; though infections in immunocompetent individuals have also been reported. They are a rare cause of infection worldwide. So far, only 53 cases have been reported in the literature. Here, we report a case of recurrent urinary tract infection by myroides species. This is the first documented case in Saudi Arabia to the best of our knowledge. Key Words: Myroides, Recurrent UTI, Renal transplant recipient, Immunosuppression.

Antibiotic Prescribing Patterns for Hospitalized children with Community-Acquired Pneumonia in a Secondary Care Center.

BACKGROUND: Narrow-spectrum antibiotics are recommended as the first-line therapy for management of children hospitalized with community-acquired pneumonia (CAP). There are limited data evaluating the antibiotic prescription patterns for CAP in Saudi Arabia. The goal of this study to report on the antibiotic patterns in children hospitalized with CAP. METHODS: A prospective cross-sectional study was conducted in children aged 1 month to 13 years who were hospitalized with a diagnosis of CAP at King Khalid Hospital in Majmaah, Saudi Arabia, between January 2019 and January 2020. RESULTS: Data from 233 patients were collected. The majority of patients received amoxicillin clavulanate (57.9%), followed by ceftriaxone (30%), azithromycin (20.6%), cefuroxime (6%), ampicillin (2.1%), and piperacillin-tazobactam (2.1%). None of our patients were started on narrow-spectrum therapy. The younger age group (1-3 months) and patients with severe pneumonia were more likely to receive broad-spectrum cephalosporin and have a longer hospital stay (P = .000 and P = .002, respectively). However, the 4 months to 5 years age group was more likely to receive amoxicillin clavulanate (P = .001). Male gender was a significate risk factor for patients with severe pneumonia (P=.013) CONCLUSIONS: We demonstrated the inappropriate use of broad-spectrum therapy in children hospitalized with CAP. Further large multicenter studies are necessary to evaluate the patterns of antibiotic use and implement antimicrobial stewardship programs or quality-improvement projects to improve adherence to guidelines.

Efficacy of newer modalities in the management of indirect hyperbilirubinaemia at a secondary care hospital: A prospective study from 2015-2018.

OBJECTIVE: To evaluate the efficacy of current practices and new modalities for the management of neonatal indirect hyperbilirubinaemia. METHODS: The prospective study was conducted at King Khalid Hospital, Al Majmaah, Saudi Arabia, from September 2015 to September 2018, and copmprised neonates with hyperbilirubinaemia who were managed using the National Institute for Health and Clinical Excellence 2010 guidelines. The outcomes were measured in terms of decrease in total serum bilirubin and clinical improvement. Data was analysed using SPSS 25. RESULTS: Of the 233 subjects, there were 119(51%) girls and 114(49%) boys. Phototherapy was used in 162(69.5%) cases, intensive phototherapy in 36(15.5%) and intravenous immunoglobulin in 35(15%). Exchange transfusion was done in 2(0.85%) patients. All the 233(100%) patients improved with the management and total serum bilirubin significantly reduced (p<0.05). CONCLUSIONS: Newer techniques were found to have a vital role in the management of neonatal hyperbilirubinaemia.