RNA interference （RNAi） technology has the potential to be used in pest management in crop production. Here, the transcriptome of Nephotettix cincticeps （Uhler） was deeply sequenced to investigate the systematic R...RNA interference （RNAi） technology has the potential to be used in pest management in crop production. Here, the transcriptome of Nephotettix cincticeps （Uhler） was deeply sequenced to investigate the systematic RNAi mechanism and candidate genes for dsRNA feeding. In our datasets, a total of 81 225 transcripts were obtained with the length from 150 bp to about 4.2 kb. Almost all the genes related to the RNAi core pathway were proved to be present in N. cincticeps transcriptome. Two transcripts that respectively encode a systemic interference defective （SID） were identified in our da- tabase, indicating that the systematic RNAi pathway can function effectively in N. cincticeps. Our datasets not only supply basic gene information for the studies of gene expression and functions in N. cincticeps, such as the control genes for gene expression analysis, but also provide candidate genes for RNAi pest management, such as the genes that encode P450 monooxygenase, V-ATPase and chitin synthase.展开更多
In order to analyze the population structure of Puccinia striiformis f.sp.tritici(Pst),SNPs primers of Pst were developed from DNA sequences of nine house-keeping genes Chs,Act,Mapk1,Tub,Cdc2,Rd,Sm,Ls and Ef-1α obtai...In order to analyze the population structure of Puccinia striiformis f.sp.tritici(Pst),SNPs primers of Pst were developed from DNA sequences of nine house-keeping genes Chs,Act,Mapk1,Tub,Cdc2,Rd,Sm,Ls and Ef-1α obtained from GenBank.Eight of which were from Pst and one from P.graminis f.sp.tritici(Pgt).Thirteen pairs of primers were designed and screened based on at least 30 isolates of Pst obtained from diverse locations.Three of them were polymorphic namely Mapl351S/Mapl683 A,Cd28S/Cd352 A and Efl37S/Ef531 A.Polymorphic loci analysis based on 149 Pst isolates from 5 provinces indicated that the three primers had good polymorphism.Cd28S/Cd352 A had 8 polymorphic loci,three of them were phylogenetically informative.Efl37S/Ef531 A had 6 polymorphic loci and 4 of them were informative.Mapl351S/Mapl683 A had 8 polymorphic loci and 4 were informative.The 3 primers were used for analyzing Pst population and revealed the ancestral origin,phylogeny relation of haplotypes,genetic differentiation of the population,gene flow,and the evolution and migration relation between Pst populations thereby.The findings indicate that the 3genes SNP primers can be used for Pst population genetic structure analysis.展开更多
基金funded by the National Program of Transgenic Variety Development of China (2014ZX08001001)the China Postdoctoral Science Foundation (2013M531705)
文摘RNA interference （RNAi） technology has the potential to be used in pest management in crop production. Here, the transcriptome of Nephotettix cincticeps （Uhler） was deeply sequenced to investigate the systematic RNAi mechanism and candidate genes for dsRNA feeding. In our datasets, a total of 81 225 transcripts were obtained with the length from 150 bp to about 4.2 kb. Almost all the genes related to the RNAi core pathway were proved to be present in N. cincticeps transcriptome. Two transcripts that respectively encode a systemic interference defective （SID） were identified in our da- tabase, indicating that the systematic RNAi pathway can function effectively in N. cincticeps. Our datasets not only supply basic gene information for the studies of gene expression and functions in N. cincticeps, such as the control genes for gene expression analysis, but also provide candidate genes for RNAi pest management, such as the genes that encode P450 monooxygenase, V-ATPase and chitin synthase.
基金Financial support by the Ministry of Science and Technology(2011CB100403)the Ministry of Agriculture(200903035)+1 种基金National Natural Science Foundation(31260417)Yunnan Academy of Agricultural Sciences(2007yaas07)
文摘In order to analyze the population structure of Puccinia striiformis f.sp.tritici(Pst),SNPs primers of Pst were developed from DNA sequences of nine house-keeping genes Chs,Act,Mapk1,Tub,Cdc2,Rd,Sm,Ls and Ef-1α obtained from GenBank.Eight of which were from Pst and one from P.graminis f.sp.tritici(Pgt).Thirteen pairs of primers were designed and screened based on at least 30 isolates of Pst obtained from diverse locations.Three of them were polymorphic namely Mapl351S/Mapl683 A,Cd28S/Cd352 A and Efl37S/Ef531 A.Polymorphic loci analysis based on 149 Pst isolates from 5 provinces indicated that the three primers had good polymorphism.Cd28S/Cd352 A had 8 polymorphic loci,three of them were phylogenetically informative.Efl37S/Ef531 A had 6 polymorphic loci and 4 of them were informative.Mapl351S/Mapl683 A had 8 polymorphic loci and 4 were informative.The 3 primers were used for analyzing Pst population and revealed the ancestral origin,phylogeny relation of haplotypes,genetic differentiation of the population,gene flow,and the evolution and migration relation between Pst populations thereby.The findings indicate that the 3genes SNP primers can be used for Pst population genetic structure analysis.
