1.Albinism and lung fibrosis in a young man – the first case of adult Hermansky-Pudlak Syndrome reported in Malaysia
Liza Ahmad Fisal ; Aziah Ahmad Mahayiddin
The Medical Journal of Malaysia 2012;67(6):620-621
A young gentleman of Indian descent with oculacutaneous
albinism (OCA) was found to have severe pulmonary
fibrosis at first presentation. Following investigations, he was diagnosed with Hermansky-Pudlak Syndrome (HPS). It
is a genetic condition characterised by albinism, bleeding
diathesis and multisystem disorder observed in individuals
of particular descents. Although there is no curative
treatment apart from lung transplantation, preventive
measures to minimise pulmonary insult may change the
natural history of the disease. Therefore HPS should be
actively sought, monitored and risk factors addressed in
individuals with OCA and bleeding diathesis particularly
those of Indian descent as they may develop serious
complications such as pulmonary fibrosis in the future.
2.Isolation, screening and characterization of bacteria associated with cocoa tree roots for different plant growth promotion (PGP) activities
Nurfadzilah Madian ; Halimi Mohd Saud ; Fisal Ahmad ; Geok Hun Tan
Malaysian Journal of Microbiology 2021;17(5):471-481
Aims:
Plant growth promoting rhizobacteria (PGPR) is a group of bacteria that colonise plant roots and enhance plant growth by a diverse range of mechanisms. This study aims to determine the capabilities of PGPR isolated from cocoa tree roots and their efficiency in enhancing plant growth under greenhouse conditions.
Methodology and results:
Eight samples of healthy cocoa tree roots were collected from different locations in Malaysia. Isolated bacteria were screened based on nitrogen fixation, phosphate and potassium solubilization, and catalase activity. The efficiency of purified PGPR was evaluated from pot experiments of cocoa seedlings under greenhouse conditions. Out of 122 isolates, 18 isolates showed several traits of nitrogen fixation, phosphorus and potassium solubilization and were further screened for other plant growth promoting (PGP) traits like catalase and production of indole acetic acid (IAA). Out of all the PGP trait tests, seven isolates showed the most prominent results for in vitro tests and were further tested in vivo for growth promotion of cocoa seedlings under greenhouse conditions. In the presence of bacterial isolates with 2.5 g of inorganic fertilizer, Leclercia adecarboxylata resulted in increases in plant height, leaf number, root length, stem fresh weight and total fresh and dry weight of cocoa seedlings by 15.68%, 17.14%, 9.48%, 5.67%, 11.84% and 25.12%, respectively.
Conclusion, significance and impact of study
Based on the result, L. adecarboxylata incorporated with selected carrier material improve cocoa seedling growth and biomass. This formulation also reduces the production cost of inorganic fertilizer and increase the application and development of biofertilizer.
Cacao--growth &
;
development
;
Rhizosphere