Leaf phosphorus fractionation in rice to understand internal phosphorus-use efficiency.

Background And Aims: Phosphorus (P) availability is often limiting for rice (Oryza sativa) production. Improving internal P-use efficiency (PUE) is crucial to sustainable food production, particularly in low-input systems. A critical aspect of PUE in plants, and one that remains poorly understood, is the investment of leaf P in different chemical P fractions (nucleic acid-P, lipid-P, inorganic-P, metabolite-P and residual-P).

Genetic and physiological traits for internal phosphorus utilization efficiency in rice.

Phosphorus (P) is an essential macronutrient for plant growth and development. Phosphorus is usually applied as fertilizer obtained from rock phosphate which is a non-renewable resource. Therefore, developing rice varieties that can use P more efficiently is crucial.

GORK Channel: A Master Switch of Plant Metabolism?

Potassium regulates a plethora of metabolic and developmental response in plants, and upon exposure to biotic and abiotic stresses a substantial K loss occurs from plant cells. The outward-rectifying potassium efflux GORK channels are central to this stress-induced K loss from the cytosol. In the mammalian systems, signaling molecules such as gamma-aminobutyric acid, G-proteins, ATP, inositol, and protein phosphatases were shown to operate as ligands controlling many K efflux channels.

Expressing Arabidopsis thaliana V-ATPase subunit C in barley (Hordeum vulgare) improves plant performance under saline condition by enabling better osmotic adjustment.

Salinity is a global problem affecting agriculture that results in an estimated US$27 billion loss in revenue per year. Overexpression of vacuolar ATPase subunits has been shown to be beneficial in improving plant performance under saline conditions. Most studies, however, have not shown whether overexpression of genes encoding ATPase subunits results in improvements in grain yield, and have not investigated the physiological mechanisms behind the improvement in plant growth.

Improved Attitudes to Psychiatry: A Global Mental Health Peer-to-Peer E-Learning Partnership.

Objective: Health links aim to strengthen healthcare systems in low and middle-income countries through mutual exchange of skills, knowledge, and experience. However, student participation remains limited despite growing educational emphasis upon global health. Medical students continue to report negative attitudes to psychiatry in high-income countries, and in Somaliland, the lack of public sector psychiatrists limits medical students' awareness of mental healthcare.

Evaluating contribution of ionic, osmotic and oxidative stress components towards salinity tolerance in barley.

Background: Salinity tolerance is a physiologically multi-faceted trait attributed to multiple mechanisms. Three barley (Hordeum vulgare) varieties contrasting in their salinity tolerance were used to assess the relative contribution of ionic, osmotic and oxidative stress components towards overall salinity stress tolerance in this species, both at the whole-plant and cellular levels. In addition, transcriptional changes in the gene expression profile were studied for key genes mediating plant ionic and oxidative homeostasis (NHX; RBOH; SOD; AHA and GORK), to compare a contribution of transcriptional and post-translational factors towards the specific components of salinity tolerance.

Can UK healthcare workers remotely support medical education in the developing world?: Focus group evaluation.

Objectives: To evaluate the feasibility of providing regular, live, text-based teaching to medical students and junior doctors in Somaliland using a dedicated case-based medical education website (www.MedicineAfrica.com).