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Página 1 a partir de 30 resultados
Esterase as molecular marker for salt tolerance in regenerated plants of rice, Oryza sativa L.
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Esterase variation was studied in plants regenerated from callus cultures of four rice (Oryza sativa) varieties, viz. pokkali, which is a moderately salt tolerant variety and three salt sensitive varieties MI 48, annapoorna and jyothi. Variation was studied at tillering stage of plants regenerated
Multifunctionality and diversity of GDSL esterase/lipase gene family in rice (Oryza sativa L. japonica) genome: new insights from bioinformatics analysis.
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BACKGROUND
GDSL esterases/lipases are a newly discovered subclass of lipolytic enzymes that are very important and attractive research subjects because of their multifunctional properties, such as broad substrate specificity and regiospecificity. Compared with the current knowledge regarding these
The semidwarf gene, sd-1, of rice (Oryza sativa L.). I. Linkage with the esterase locus, Estl-2.
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The linkage relationship between the semidwarf gene (sd-1) and the isozyme locus EstI-2 was elucidated using segregating populations derived from crosses between several semidwarf testers and tall rice varieties. Bimodal distributions for culm length were observed in F2 populations of three cross
Isolation and Expression analysis of OsPME1, encoding for a putative Pectin Methyl Esterase from Oryza sativa (subsp. indica).
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Pectin Methyl Esterases (PMEs) play an essential role during plant development by affecting the mechanical properties of the plant cell walls. Recent studies indicated that PMEs play important role in pollen tube development. In this study, we isolated a 1.3 kb cDNA clone from rice panicle cDNA
The DROOPING LEAF (DR) gene encoding GDSL esterase is involved in silica deposition in rice (Oryza sativa L.)
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Leaf morphology is one of the most important agronomic traits in rice breeding because of its contribution to crop yield. The drooping leaf (dr) mutant was developed from the Ilpum rice cultivar by ethyl methanesulfonate (EMS) mutagenesis. Compared with the wild type, dr plants exhibited drooping
Comparative studies of isozymes in Oryza sativa, O. minuta, and their interspecific derivatives: evidence for homoeology and recombination.
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Enzyme electrophoresis was used to compare the isozyme phenotypes of Oryza sativa, IR31917 (AA genome), and two O. minuta accessions (Om 101089 and Om101141; BBCC genome) for ten enzyme systems. Between the two species, two systems were monomorphic (isocitrate dehydrogenase and alcohol
Genetic variations in the hybrids of rice (Oryza sativa) and sorghum (Sorghum vulgare).
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Some of results from morphological and cytological observations and esterase-isozyme studies of a rice-sorghum hybrid are presented in this paper. There is a great diversity of morphological characters and some special characteristics in the progenies of the hybrids of rice with sorghum. The meiosis
Biochemical basis of hybrid vigour. The genetics of grain weight of Oryza sativa.
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Four cathodal bands (C1, C2, C3 and C4) of esterase (E1, C1. 3.1) were correlated with the grain weight of rice (Oryza sativa L.). Zymogram patterns indicated intensity differences among these bands infinegrain and coarse-grain varieties. Bands C1. and C2 were dark in fine grain varieties whereas C3
Basis of selectivity of cyhalofop-butyl in Oryza sativa L.
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Cyhalofop-butyl (CB), 2-[4-(4-cyano-2-fluorophenoxy)phenoxy]propanoic acid, butyl ester (R), is an aryloxyphenoxypropionate (AOPP) herbicide for postemergence use in rice to control grasses, mainly Echinochloa spp. Similar to other AOPP and cyclohexanedione herbicides, the site of action of CB is
Functional proteomic analysis of rice bran esterases/lipases and characterization of a novel recombinant esterase.
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An esterase from rice ( Oryza sativa ) bran was identified on two-dimensional gel using 4-methylumbelliferyl butyrate as a substrate. The esterase cDNA (870 bp) encoded a 289 amino acid protein (designated OsEST-b) and was expressed in Escherichia coli . The molecular weight of recombinant OsEST-b
Syringolin-mediated activation of the Pir7b esterase gene in rice cells is suppressed by phosphatase inhibitors.
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Inoculation of rice plants (Oryza sativa) with the nonhost pathogen Pseudomonas syringae pv. syringae leads to the activation of defense-related genes and ultimately to induced resistance against the rice blast fungus Pyricularia oryzae. One of the molecular determinants of P. syringae pv. syringae
Cloning and characterization of EstC from Burkholderia gladioli, a novel-type esterase related to plant enzymes.
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By screening a genomic library of Burkholderia gladioli (formerly Pseudomonas marginata) for clones exhibiting esterolytic activity, the gene for a novel-type esterase (EstC) showing significant homology to plant enzymes could be isolated. High homology was found to two hydroxynitrile lyases
Dwarf 88, a novel putative esterase gene affecting architecture of rice plant.
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Rice architecture is an important agronomic trait that affects grain yield. We characterized a tillering dwarf mutant d88 derived from Oryza sativa ssp. japonica cultivar Lansheng treated with EMS. The mutant had excessive shorter tillers and smaller panicles and seeds compared to the wild-type. A
Abscisic acid induced cellular responses of sub1A QTL to aluminium toxicity in rice (Oryza sativa L.).
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Involvement of abscisic acid (ABA) was studied for aluminium (Al) sensitivity through functioning of sub1A quantitative trait loci in rice cultivars. sub1A quantitative trait loci bearing cv. Swarna Sub1 was found almost compatible with non sub1A quantitative trait loci bearing cv. Swarna for
A cell wall-degrading esterase of Xanthomonas oryzae requires a unique substrate recognition module for pathogenesis on rice.
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Xanthomonas oryzae pv oryzae (Xoo) causes bacterial blight, a serious disease of rice (Oryza sativa). LipA is a secretory virulence factor of Xoo, implicated in degradation of rice cell walls and the concomitant elicitation of innate immune responses, such as callose deposition and programmed cell
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