Fusarium udum as a mycoparasite ofMortierella subtilissima

Summary Fusarium udum was found to be a mycoparasite ofMortierella subtilissima which is a new record. Formation of chlamydospores byF. udum insideM. subtilissima was observed as a result of mycoparasitism.     

Effect of angiotensin II on the WNK-OSR1/SPAK-NCC phosphorylation cascade in cultured mpkDCT cells and in vivo mouse kidney

In our recent study using Wnk4^D561A/+ knockin mice, we determined that the WNK-OSR1/SPAK-NaCl cotransporter (NCC) phosphorylation cascade is important for regulating NCC function in vivo. Phosphorylation of NCC was necessary for its plasma membrane localization. Previously, angiotensin II infusion was shown to increase apical membrane expression of NCC in rats. Therefore, we investigated whether angiotensin II was an upstream regulator for the WNK-OSR1/SPAK-NCC cascade in cultured cells and in vivo kidney. In mpkDCT cells, the phosphorylation of OSR1 and NCC was increased 30 min after the addition of angiotensin II (10^-9-10⁻⁷ M) but returned to baseline after 18 h. In mice, a 5-min infusion of angiotensin II (5 ng/g/min) increased NCC phosphorylation in the kidney at 30 min and 2 h after the injection but returned to baseline 24 h later. This increase was inhibited by angiotensin II receptor blocker (valsartan) but not by aldosterone receptor blocker (eplerenone). Ten-day infusions of angiotensin II (720 ng/day) also increased phosphorylation of OSR1 and NCC in the mouse kidney, and both valsartan and eplerenone inhibited the increased phosphorylation. Although angiotensin II is identified as an upstream regulator for the WNK-OSR1/SPAK-NCC cascade in vivo, aldosterone appears to be the major regulator of this signal cascade in the long-term regulation by angiotensin II.     

A novel subgroup Q5 of human Y-chromosomal haplogroup Q in India

Background  

Y-chromosomal haplogroup (Y-HG) Q is suggested to originate in Asia and represent recent founder paternal Native American radiation into the Americas. This group is delineated into Q1, Q2 and Q3 subgroups defined by biallelic markers M120, M25/M143 and M3, respectively. Recently, a novel subgroup Q4 has been identified which is defined by bi-allelic marker M346, representing HG Q (0.41%, 3/728) in Indian population. With scanty details of HG Q in Asia, especially India, it was pertinent to explore the status of the Y-HG Q in Indian population to gather an insight to determine the extent of diversity within this region.     

Role of abiotic stress responsive miRNAs in Arabidopsis root development

Journal of Plant Biochemistry and Biotechnology - Abiotic stresses like drought, extreme temperature, and lack of sufficient water or nutrients adversely affect plant growth and productivity. The...     

A panel of polymorphic microsatellite markers in Himalayan monal Lophophorus impejanus developed by cross-species amplification and their applicability in other Galliformes

Isolation and development of new microsatellite markers for any species is still labour-intensive and requires substantial inputs of time, money and expertise. Therefore, cross-species microsatellite amplification can be an effective way in obtaining microsatellite loci for closely related taxa in bird species. We have reported microsatellite loci for Himalayan monal for the first time. Fifteen microsatellite markers developed for chicken were cross-amplified in Himalayan monal. All the tested 15 microsatellite markers were polymorphic, with mean (± s.e.) allelic number of 4 ± 1.51, ranging 2–7 per locus. The observed heterozygosity in the population ranged between 0.285 and 0.714, with mean (± s.e.) of 0.499 ± 0.125, indicating considerable genetic variation in this population. While 12 loci conformed to Hardy–Weinberg equilibrium (P > 0.05), 3 loci, i.e. MCW0295, MCW0081, MCW0330 deviated from it (P < 0.05). No evidence for linkage disequilibrium was observed among pair of loci. Our study show that these 15 microsatellites loci could be employed in population genetic studies for Himalayan monal and their applicability in Jungle Bush Quail, Grey francolin and Kalij pheasant.