检索结果-南通市图书馆

Elucidating the genetic basis of antioxidant status in lettuce (Lactuca sativa)

Horticulture Research 2015年第1期2卷 47-59页

作者： Annabelle Damerum Stacey L Selmes Gaia F Biggi Graham JJ Clarkson Steve D Rothwell ma.ia.josétruco Richard W Michelmore Robert D Hancock Connie Shellcock mark A Chapman Gail Taylor Centre for Biological Sciences University of SouthamptonLife SciencesUniversity RoadSouthamptonSO171BJUK Vitacress Limited Lower Link FarmSt Mary BourneAndoverSP116DBHampshireUK The Genome Centre and the Department of Plant Sciences University of CaliforniaDavis95616CAUSA The James Hutton Institute InvergowrieDD25DADundeeUK

A diet rich in phytonutrients from fruit and vegetables has been acknowledged to afford protection against a range of human diseases,but many of the most popular vegetables are low in *** relatives of crops may contain allelic variation for genes determining the concentrations of these beneficial phytonutrients,and therefore understanding the genetic basis of this variation is important for breeding efforts to enhance nutritional *** this study,lettuce recombinant inbred lines,generated from a cross between wild and cultivated lettuce(Lactuca serriola and Lactuca sativa,respectively),were analysed for antioxidant(AO)potential and important phytonutrients including carotenoids,chlorophyll and phenolic *** grown in two environments,96 quantitative trait loci(QTL)were identified for these nutritional traits:4 for AO potential,2 for carotenoid content,3 for total chlorophyll content and 87 for individual phenolic compounds(two per compound on average).Most often,the *** alleles conferred an increase in total AOs and *** genes underlying these QTL were identified by BLASTn searches;in several cases,these had functions suggesting involvement in phytonutrient biosynthetic *** of a QTL on linkage group 3,which accounted for>30%of the variation in AO potential,revealed several candidate genes encoding multiple MYB transcription factors which regulate flavonoid biosynthesis and flavanone 3-hydroxylase,an enzyme involved in the biosynthesis of the flavonoids quercetin and kaempferol,which are known to have powerful AO ***-up quantitative RT-PCR of these candidates revealed that 5 out of 10 genes investigated were significantly differentially expressed between the wild and cultivated parents,providing further evidence of their potential involvement in determining the contrasting *** results offer exciting opportunities to improve the nutritional content and health benefits of lettu

关键词： breeding crops Lactuca

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Molecular markers reliably predict post-harvest deterioration of fresh-cut lettuce in modified atmosphere packaging

引用

Horticulture Research 2018年第1期5卷 698-710页

作者： Ivan Simko Ryan J.Hayes ma.ia.jose truco Richard W.Michelmore Rudie Antonise mark massoudi u.s.department of agriculture agricultural research serviceu.s.agricultural research stationcrop improvement and protection research unit1636 east alisal streetsalinasca93905usa u.s.department of agriculture national forage seed production research center3450 sw campus waycorvallisor97331usa the genome center and department of plant sciences university of californiadavisca95616usa keygene n.v. p.o.box 2166700 aewageningenthe netherlands ag-biotech 9701 blue larkspur lanesuite amontereyca93940usa

Fresh-cut lettuce is popular,but highly perishable *** studies of two bi-parental populations derived from crossing parents with rapid and slow rates of deterioration showed that the deterioration rate is a heritable trait(broad spectrum heritability,H2 of 0.56–0.87).The major genetic determinant of the deterioration rate in both populations was the quantitative trait locus(QTL),qSL4,located on linkage group *** QTL explained 40–74%of the total phenotypic variation of the trait in the two *** the qSL4 region with single-nucleotide(SNP)markers allowed detection of six haplotypes in a set of 16 lettuce accessions with different rates of *** of the haplotypes were always associated with very rapid rates of deterioration,while the other three haplotypes were associated with slow rates of *** SNPs located 53 bp apart were sufficient to separate the 16 accessions into two groups with different rates of *** accuracy of markers-trait association was subsequently tested on 350 plants from seven F2 families that originated from crossing parents with different rates of *** H2 of deterioration rate in these seven families ranged from 0.64 to *** SNP-based analysis accurately identified individuals with rapid,intermediate,and slow rates of deterioration in each *** rate of deterioration was found in individuals having heterozygous alleles at qSL4,indicating an additive effect of the *** assay can be used for fast,accurate,and reliable identification of deterioration rate after processing for salad.

关键词： deterioration linkage originated

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The inheritance of resistance to bacterial leaf spot of lettuce caused by Xanthomonas campestris *** in three lettuce cultivars

引用

Horticulture Research 2014年第1期1卷 1-7页

作者： Ryan J Hayes mark A Trent ma.ia.jose truco Rudie Antonise Richard W Michelmore Carolee T Bull United States Department of Agriculture Agricultural Research ServiceCrop Improvement and Protection UnitSalinasCA 93905USA The Genome Center and Department of Plant Sciences University of CaliforniaDavisCA 95616USA Keygene N.V. 6700 AE WageningenThe Netherlands

Lettuce yields can be reduced by the disease bacterial leaf spot(BLS)caused by the pathogen Xanthomonas campestris ***(Xcv)and host resistance is the most feasible method to reduce disease *** cultivars La Brillante,Pavane and Little Gem express an incompatible host–pathogen interaction as a hypersensitive response(HR)to California strains of Xcv resulting in *** was known about the inheritance of resistance;however,resistance to other lettuce pathogens is often determined by resistance gene candidates(RGCs)encoding nucleotide-binding leucine-rich repeat(NB-LRR)***,we determined the inheritance of BLS resistance in the cultivars La Brillante,Little Gem and Pavane and mapped it relative to *** reaction to Xcv was analyzed in nine F_(1),F_(2) and recombinant inbred line populations of lettuce from HR3compatible or HR3HR *** HR in La Brillante,Pavane and Little Gem is conditioned by single dominant genes,which are either allelic or closely linked *** resistance gene in La Brillante was designated Xanthomonas resistance 1(Xar1)and mapped to lettuce linkage group ***1 is present in a genomic region that contains numerous NB-LRR encoding RGCs and functional pathogen resistance loci in the RGC2 *** Xar1 gene confers a high level of BLS resistance in the greenhouse and field that can be introgressed into commercial lettuce cultivars to reduce BLS losses using molecular markers.

关键词： cultivar Xanthomonas campestris

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：