The effect of altered tyrosyl-tRNAs on the developmental process of sporulation was examined. Mutations in eight independent loci resulting in tyrosine-inserting nonsense suppressor were tested for their effects on sporulation. Different levels of inhibition were found ranging from SUP3-omicron, which caused the greatest reduction of sporulation (7-17% of wild type), to SUP11-omicron which caus...

To shed light on the specific contribution of HDA101 in modulating metabolic pathways in the maize seed, changes in the metabolic profiles of kernels obtained from hda101 mutant plants have been investigated by a metabonomic approach. Dynamic properties of chromatin folding can be mediated by enzymes that modify DNA and histones. The enzymes responsible for the steady-state of histone acetylati...

                In order to determine the best developmental stage of three common bean cultivars (Talash, COS16 and Khomain) at which maximum seed quality is attained under different irrigation regimes (I1-irrigation after 60 mm, I2-irrigation after 80 mm and I3-irrigation after 100 mm evaporation from class A pan), a split plot experiment (using R.C.B. design) with 3 replications was conducte...

A Bacillus subtilis prfB45 mutant grew at 42 degrees C, but its sporulation was severely defective at 37 degrees C. Sporulation-specific induction of kinA, spo0A, and spo0H genes was inhibited in the mutant. The effects of temperature up-shift and down-shift on sporulation of the prfB45 mutant was observed at an early stage of sporulation. UGA readthrough frequency at non-permissive temperature...

Polyacrylamide gel profiles of Clostridium perfringens spore coat protein revealed four and occasionally five components. Pulse-chase experiments indicated that synthesis of coat protein polypeptide and enterotoxin was an early sporulation event. However, maximum synthesis occurred coincident with the onset of heat resistance.

The aim of the study was to determine patterns changes in concentration mold spores genus Alternaria air Zaporizhzhia city. Materials and methods. object dynamics spore atmospheric carried out at Department Medical Biology, Parasitology Genetics State University. Samples were taken annually from March 1 October 31 by volumetric method using a Hirst-type trap. device is yearly certified state me...

Quality of seeds of three cultivars (IPSA Seem-2, BU Seem-3 and IPSA Seem5) of lablab bean (Lablab purpureus L. Sweet) collected from crops planted in three different dates (15 May, 15 July, and 15 September 2003) was assessed in respect of different parameters. The maximum percentage of seeds of cv. IPSA Seem-2 was germinated (95.67) whereas, BU Seem-3 had the maximum electrical conductivity (...

Cucurbita pepo var. styriaca is known as a medicinal crop among other cucurbits and has been cultivated around many decades in some parts of Iran by local farmers. The present study was conducted on 8 accessions of C. pepo seed from various planting zones. All collected seeds were planted in Horticultural Science Research Field of University of Tehran in three replications with two observations...