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151.
Satish K Guttikonda Joshi Trupti Naveen C Bisht Hui Chen Yong-Qiang C An Sona Pandey Dong Xu Oliver Yu 《BMC plant biology》2010,10(1):243
Background
Cytochrome P450 monooxygenases (P450s) catalyze oxidation of various substrates using oxygen and NAD(P)H. Plant P450s are involved in the biosynthesis of primary and secondary metabolites performing diverse biological functions. The recent availability of the soybean genome sequence allows us to identify and analyze soybean putative P450s at a genome scale. Co-expression analysis using an available soybean microarray and Illumina sequencing data provides clues for functional annotation of these enzymes. This approach is based on the assumption that genes that have similar expression patterns across a set of conditions may have a functional relationship. 相似文献152.
Surendra Singh Bisht Seerat Fatima Akhilesh K. Tamrakar Neha Rahuja Natasha Jaiswal Arvind K. Srivastava Rama P. Tripathi 《Bioorganic & medicinal chemistry letters》2009,19(10):2699-2703
A simple synthesis of phenyl butenoyl C-glycosides has been achieved by Aldol condensation of peracetylated glycosyl acetones with aromatic aldehydes followed by deacetylation with methanolic NaOMe. The selected butenoyl C-glycosides on conjugate addition of diethyl malonate resulted in polyfunctional alkanonyl glycosides in good yields. The butenoyl C- and alkanoyl C-glycosides were evaluated for their α-glucosidase, glucose-6-phosphatse and glycogen phosphorylase enzyme inhibitory activities in vitro. Three of the synthesized (3, 5 and 9) showed potent enzyme inhibitory activities as compared to standard drugs. Compounds 3, 5 and 9 were evaluated in vivo too displaying significant activity as compared to standard drugs acarbose and metformin. 相似文献
153.
Eleusine (Poaceae) includes six diploid and three polyploid species and has three basic chromosome numbers, x=8, 9 and 10. The species
are annual as well as perennial and all are wild except E. coracana, which is cultivated for grain and fodder in Africa and the Indian subcontinent. Eleusine coracana and E. africana have the same genome and chromosome number (2n=36). Eleusine indica and E. floccifolia are identified as two genome donors to these polyploid species. Eleusine kigeziensis is the third polyploid species of the genus with 2n=38. Its genome may have come from E. jaegeri and from one of the species with x=9, most probably from E. indica. Eleusine indica, E. tristachya, E. floccifolia and E. intermedia with x=9 and two polyploid species, E. coracana and E. africana, are closely related and there is free genetic flow between them. Eleusine multiflora with x=8 is significantly different in morphology and at genomic level from other species. Eleusine jaegeri with x=10 is morphologically similar to E. indica, however, more information is needed to ascertain its position in the genus. Eleusine coracana, which is commonly called finger millet, is a potential and nutritious crop for the increasing population of the world, particularly
in arid and semi-arid regions. It can also serve as a gene pool for various important characters and disease resistant genes.
Received February 11, 2002; accepted May 27, 2002 Published online: October 14, 2002
Addresses of the authors: Madho Singh Bisht and Yasuhiko Mukai (e-mail: ymukai@cc.osaka-kyoiku.ac.jp), Laboratory of Plant
Molecular Genetics, Division of Natural Science, Osaka Kyoiku University, 4-698-1 Asahigaoka, Kashiwara, Osaka 582-8582, Japan. 相似文献
154.
Govindan Selvakumar Piyush Joshi Preeti Suyal Pankaj K. Mishra Gopal K. Joshi Jaideep K. Bisht Jagdish C. Bhatt Hari S. Gupta 《World journal of microbiology & biotechnology》2011,27(5):1129-1135
Pseudomonas lurida strain M2RH3 (MTCC 9245) is a Gram negative, non spore forming, fluorescent bacterium isolated from a high altitude rhizospheric
soil from the Uttarakhand Himalayas. The identity of the bacterium was arrived by sequencing of the 16S rRNA gene and subsequent
phylogenetic analysis. It grew and exhibited plant growth promoting traits at 4, 15 and 30°C, under in vitro conditions. The
expression of plant growth promoting (PGP) traits by the bacterium was highest at 30°C, with a proportionate reduction in
PGP activity at lower temperatures. Determination of phosphate solubilization by the bacterium at three incubation temperatures
revealed a steady increase in the soluble P levels across the incubation temperatures, coupled with a concomitant drop in
the pH levels of the culture supernatant, till the 14th day of incubation. Seed bacterization with the isolate positively
influenced the growth and nutrient uptake parameters of wheat seedlings cv. VL 804 in pot culture conditions at controlled
cold growing temperature. This is an early report on the phosphate solubilization and plant growth promotion by Pseudomonas lurida, which is a relatively new species of the genus Pseudomonas and opens up a hitherto unknown facet of this bacterium. 相似文献
155.
156.
Sharma Deepika Poonam Shrivastava Rahul Bisht Gopal Singh 《International journal of peptide research and therapeutics》2020,26(1):531-537
International Journal of Peptide Research and Therapeutics - Tuberculosis has become a cause of worldwide concern; emergence of resistance in various mycobacterial strains has led to an urgent... 相似文献
157.
158.
Mishra PK Bisht SC Ruwari P Selvakumar G Joshi GK Bisht JK Bhatt JC Gupta HS 《Archives of microbiology》2011,193(7):497-513
Twelve psychrotolerant Pseudomonad strains were selected on the basis of various plant growth-promoting (PGP) activities at
cold temperature (4°C). The effect of inoculation with Pseudomonad strains on cold alleviation and growth of wheat seedling
at cold temperature (8°C) was investigated under greenhouse condition. Inoculation with Pseudomonad strains significantly
enhanced root/shoot biomass and nutrients uptake as compared to non-bacterized control at 60 days of plant growth. Bacterization
significantly improved the level of cellular metabolites like chlorophyll, anthocyanin, free proline, total phenolics, starch
content, physiologically available iron, proteins, and amino acids that are sign of alleviation of cold stress in wheat plants.
Increased relative water content, reduced membrane injury (electrolyte leakage), and Na+/K+ ratio were also recorded in bacterized wheat plants. Electrolyte leakage and Na+/K+ were found inversely proportional to plant growth at cold temperature. Statistical analysis of twenty-three measured parameters
revealed that uninoculated control was under cold stress while eight bacterial strains were positively alleviating cold stress
in wheat plants. Thus, the psychrotrophic Pseudomonad strains could effectively provide a promising solution to overcome cold
stress, which is major factor hindering wheat productivity under cold climatic condition. 相似文献
159.
Metabolism of D-amino acids is of considerable interest due to their key importance in cell structure and function. Salmonella typhimuriumd-serine deaminase (StDSD) is a pyridoxal 5' phosphate (PLP) dependent enzyme that catalyses degradation of D-Ser to pyruvate and ammonia. The first crystal structure of d-serine deaminase described here reveals a typical Foldtype II or tryptophan synthase β subunit fold of PLP-dependent enzymes. Although holoenzyme was used for crystallization of both wild-type StDSD (WtDSD) and selenomethionine labelled StDSD (SeMetDSD), significant electron density was not observed for the cofactor, indicating that the enzyme has a low affinity for the cofactor under crystallization conditions. Interestingly, unexpected conformational differences were observed between the two structures. The WtDSD was in an open conformation while SeMetDSD, crystallized in the presence of isoserine, was in a closed conformation suggesting that the enzyme is likely to undergo conformational changes upon binding of substrate as observed in other Foldtype II PLP-dependent enzymes. Electron density corresponding to a plausible sodium ion was found near the active site of the closed but not in the open state of the enzyme. Examination of the active site and substrate modelling suggests that Thr166 may be involved in abstraction of proton from the Cα atom of the substrate. Apart from the physiological reaction, StDSD catalyses α, β elimination of D-Thr, D-Allothr and L-Ser to the corresponding α-keto acids and ammonia. The structure of StDSD provides a molecular framework necessary for understanding differences in the rate of reaction with these substrates. 相似文献
160.
Korekar G Sharma RK Kumar R Meenu Bisht NC Srivastava RB Ahuja PS Stobdan T 《Biotechnology letters》2012,34(5):973-978
The actinorhizal plant seabuckthorn (Hippophae rhamnoides L., Elaeagnaceae) is a wind pollinated dioecious crop. To distinguish male genotypes from female genotypes early in the vegetative growth phase, we have developed robust PCR-based marker(s). DNA bulk samples from 20 male and 20 female plants each were screened with 60 RAPD primers. Two primers, OPA-04 and OPT-06 consistently amplified female-specific (FS) polymorphic fragments of 1,164 and 868 bp, respectively, that were absent in the male samples. DNA sequence of the two markers did not exhibit significant similarity to previously characterized sequences. A sequence-characterized amplified region marker HrX1 (JQ284019) and HrX2 (JQ284020) designed for the two fragments, continued to amplify the FS allele in 120 female plants but not in 100 male plants tested in the current study. Thus, HrX1 and HrX2 are FS markers that can determine the sex of seabuckthorn plants in an early stage and expedite cultivations for industrial applications. 相似文献