The development of transgenic wheat plants highly resistant to a range of pathogens using traditional signal gene expression strategies has been largely *** of systemic acquired resistance(SAR) through the over expres...
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The development of transgenic wheat plants highly resistant to a range of pathogens using traditional signal gene expression strategies has been largely *** of systemic acquired resistance(SAR) through the over expression of a controlling gene such as NPR1(non-expressor of PR genes) offers an attractive alternative for augmenting the wheat plants innate defense *** find new gene resource for wheat pathogen-resistance genetic engineering,Secale cereale *** was used as a starting material to clone full-length cDNA of NPR1 gene by homologous cloning and smarter-RACE *** the ScNPR1 molecule,there are four"W- boxes"in the upstream of ATG that are necessary for both induction of NPR1 transcription and NPR1-mediated activation of plant defense *** gene contains the BTB and ankyrin repeat domain that is known to be the molecular basis for NPR1 function in *** predicted amino acid sequence oi ScNPR1 had highest sequence similarity to TaNPRI and OsNPR1 with 72%and 65%of identities but lower homology(37%) to the AtNPR1 proteins.
Cotton(Gossypium spp.) fiber is a highly elongated trichome from epidermal cell of cotton ovule that is one of the most important natural raw materials for the textile *** cotton(*** L.) accounts for about 95%of the a...
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Cotton(Gossypium spp.) fiber is a highly elongated trichome from epidermal cell of cotton ovule that is one of the most important natural raw materials for the textile *** cotton(*** L.) accounts for about 95%of the annual cotton production in the *** reveal developmental features of upland cotton fiber cells,we combined 11 developmental stages(-3~25 days post anthesis,DPA) of microarray data in *** ***-1,and identified 11,105 effective genes during fiber cell initiation,elongation and secondary cell wall(SCW) *** these genes,we determined 6305 differentially expressed genes(DEGs) among 11 development times by SAM(significant analysis of microarray) *** significant metabolic pathways from 6305 DEGs were identified by Kyoto Encyclopaedia of Genes and Genomes(KEGG) pathway analysis in fiber development,primarily including cytoskeleton proteins,flavonoid biosynthesis, oxidative phosphorylation,and glycolysis /*** analyses of transcriptomes showed 196 specific-times expressed genes across a developmental time-course involving in 4 gene clusters,and many key genes were confirmed by real-time quantitative reverse transcription PCR(qRT-PCR) *** specific-times expressed genes may determine that cotton fiber cell at a certain stage has its own unique feature, and developmental stages of cotton fiber cells can be distinguished by their transcript *** study also gains new insights to understand the molecular mechanism of cultivated tetraploid cotton fiber development.
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