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排序方式: 共有4621条查询结果,搜索用时 15 毫秒
1.
Meena Rajesh Kumar Reddy Kanubothula Sitarami Gautam Ranjana Maddela Surender Reddy Attipalli Ramachandra Gudipalli Padmaja 《Photosynthesis research》2021,147(3):253-267
Photosynthesis Research - Heterosis is a phenomenon wherein F1 hybrid often displays phenotypic superiority and surpasses its parents in terms of growth and agronomic traits. Investigations on the... 相似文献
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P. Rama Mohan Reddy Gopal Reddy G. Seenayya 《Bioprocess and biosystems engineering》1999,21(2):175-179
Screening of fifteen nutrients belonging to four categories, viz., carbon, nitrogen, salt and complex organic sources was carried out using Plackett-Burman design for the production of thermostable #-amylase and pullulanase by Clostridium thermosulfurogenes SV2 in solid-state fermentation (SSF). This design involves screening of up to `nу' variables in just `n' number of experiments. Regression co-efficients and t-values were calculated by subjecting the experimental data to statistical analysis. Lactose, diammonium hydrogen phosphate, calcium chloride and casein hydrolysate showed higher regression co-efficients in the biomass formation. Among the fifteen nutrients screened, based on their performance in terms of product promoting ability, availability and cost, magnesium chloride, potato starch, ferrous sulphate, pearl millet flour and corn steep liquor were identified as most effective and, therefore, selected for inclusion in further optimization studies. 相似文献
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K. S. Karthikeyan H. Polasa K. Sivarama Sastry Gopal Reddy 《Indian journal of microbiology》2008,48(3):397-400
Saccharomyces cerevisiae which cannot utilize lysine as a sole nitrogen source is shown to metabolize a Lysine 3 Cr3+ (1:1) complex synthesized, as a combined nitrogen and carbon source. It induces rapid uptake of lysine and prevents loss
of viability, in contrast with free lysine. That complexation with trivalent chromium has the effect of profoundly influencing
intracellular distribution and metabolism of the liganded amino acid is demonstrated. 相似文献
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We cloned and sequenced a plant cDNA that encodes U1 small nuclear ribonucleoprotein (snRNP) 70K protein. The plant U1 snRNP 70K protein cDNA is not full length and lacks the coding region for 68 amino acids in the amino-terminal region as compared to human U1 snRNP 70K protein. Comparison of the deduced amino acid sequence of the plant U1 snRNP 70K protein with the amino acid sequence of animal and yeast U1 snRNP 70K protein showed a high degree of homology. The plant U1 snRNP 70K protein is more closely related to the human counter part than to the yeast 70K protein. The carboxy-terminal half is less well conserved but, like the vertebrate 70K proteins, is rich in charged amino acids. Northern analysis with the RNA isolated from different parts of the plant indicates that the snRNP 70K gene is expressed in all of the parts tested. Southern blotting of genomic DNA using the cDNA indicates that the U1 snRNP 70K protein is coded by a single gene. 相似文献
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Starch supported production of maximum α-amylases (dextrinizing and saccharifying) byFusarium oxysporum andF. scirpi. Addition of gibberellic acid resulted in an increased production of α-amylase. Presence of glucose depressed the enzyme production. pH 4.5 and 4.0 was found to be optimum for the dextrinizing enzyme secreted by both species. The temperature of 25 and 40 °C was optimum for the dextrinizing enzyme secreted byF. oxysporum andF. scirpi, respectively. Saccharifying enzymes of both species showed their optimum at pH 6.9. The optimum temperature for the activity of the saccharifying enzyme was 30 and 40 °C, respectively. 相似文献
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A S Reddy S Chengappa B W Poovaiah 《Biochemical and biophysical research communications》1987,144(2):944-950
Auxins regulate various aspects of plant growth and development. However, the mechanism by which these hormones elicit diverse physiological processes is not clear. We present evidence for the role of auxin in protein phosphorylation and the possible involvement of calmodulin in auxin-induced changes. In the presence of auxin, phosphorylation of 23,000, 82,000, 105,000 and 110,000 molecular weight polypeptides markedly decreased whereas phosphorylation of 19,000, 24,000 and 28,000 molecular weight polypeptides increased. These results open up a new experimental approach in understanding the molecular mechanism by which auxins regulate various physiological processes in plants. 相似文献
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