检索结果-南通市图书馆

Genome-wide association study and genomic prediction of fusarium ear rot resistance in tropical maize germplasm

The Crop Journal 2021年第2期9卷 325-341页

作者： Yubo Liu Guanghui Hu Ao Zhang Alexander Loladze Yingxiong Hu Hui Wang Jingtao Qu Xuecai Zhang Michael Olsen Felix San Vicente Jose Crossa Feng Lin Boddupalli M.Prasanna College of Agronomy Shenyang Agricultural UniversityShenyang 110866LiaoningChina International Maize and Wheat Improvement Center(CIMMYT) El BatanTexcocoMexico College of Biological Science and Technology Shenyang Agricultural UniversityShenyang 110866LiaoningChina Maize Research Institute Heilongjiang Academy of Agricultural SciencesHarbin 150086HeilongjiangChina CIMMYT–China Specialty Maize Research Center Shanghai Academy of Agricultural SciencesShanghai 200063China Crop Breeding and Cultivation Research Institute Shanghai Academy of Agricultural SciencesShanghai 200063China Maize Research Institute Sichuan Agricultural UniversityWenjiang 611130SichuanChina International Maize and Wheat Improvement Center(CIMMYT) P.O.Box 1041Village MarketNairobi 00621Kenya

fusarium ear rot(FER)is a destructive maize fungal disease *** this study,three tropical maize populations consisting of 874 inbred lines were used to perform genomewide association study(GWAS)and genomic prediction(GP)analyses of FER *** phenotypic variation and high heritability for FER were observed,although it was highly influenced by large genotype-by-environment *** the 874 inbred lines,GWAS with general linear model(GLM)identified 3034 single-nucleotide polymorphisms(SNPs)significantly associated with FER resistance at the P-value threshold of 1×10^(-5),the average phenotypic variation explained(PVE)by these associations was 3%with a range from 2.33%to 6.92%,and 49 of these associations had PVE values greater than 5%.The GWAS analysis with mixed linear model(MLM)identified 19 significantly associated SNPs at the P-value threshold of 1×10^(-4),the average PVE of these associations was 1.60%with a range from 1.39%to 2.04%.Within each of the three populations,the number of significantly associated SNPs identified by GLM and MLM ranged from 25 to 41,and from 5 to 22,*** SNP associations across populations were rare.A few stable genomic regions conferring FER resistance were identified,which located in bins 3.04/05,7.02/04,9.00/01,9.04,9.06/07,and 10.03/*** genomic regions in bins 9.00/01 and 9.04 are *** produced moderate accuracies with genome-wide markers,and relatively high accuracies with SNP associations detected from *** prediction accuracies were observed when the training and validation sets were closely *** results implied that FER resistance in maize is controlled by minor QTL with small effects,and highly influenced by the genetic background of the populations *** selection(GS)by incorporating SNP associations detected from GWAS is a promising tool for improving FER resistance in maize.

关键词： Maize fusarium ear rot Genome-wide association study Genomic prediction Genomic selection

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

MicroRNAs Are Involved in Maize Immunity Against fusarium verticillioides ear rot

引用

Genomics, Proteomics & Bioinformatics 2020年第3期18卷 241-255页

作者： Zijian Zhou Yan Cao Tao Li Xinghao Wang Jiafa Chen Hang He Wen Yao Jianyu Wu Huiyong Zhang State Key Laboratory of Wheat and Maize Crop Science Collaborative Innovation Center of Henan Grain CropsCollege of AgronomyHenan Agricultural UniversityZhengzhou 450002China State Key Laboratory of Wheat and Maize Crop Science Collaborative Innovation Center of Henan Grain CropsCollege of Life SciencesHenan Agricultural UniversityZhengzhou 450002China School of Advanced Agricultural Sciences and School of Life Sciences State Key Laboratory of Protein and Plant Gene ResearchPeking UniversityBeijing 100871China

fusarium ear rot(FER)caused by fusarium verticillioides is one of the most common diseases affecting maize production *** results in severe yield losses and grain contamination with health-threatening *** most studies to date have focused on comprehensive analysis of gene regulation in maize during defense responses against *** infection,less is known about the role of micro RNAs(mi RNAs)in this *** used deep sequencing to compare small RNA libraries from the maize kernels of susceptible(N6)or resistant(BT-1)inbred lines from uninfected plants and upon *** *** found that pathogen exposure was accompanied by dynamic alterations in expression levels of multiple mi RNAs,including new members of previously annotated mi RNA families.A combination of transcriptomic,degradomic,and bioinformatics analyses revealed that ***-responsive mi RNAs and their potential target genes displayed opposite expression patterns in the susceptible and resistant *** category analysis uncovered preferential enrichment of the pathogen-responsive mi RNAs and their targets in the phenylpropanoid metabolic processes,plant–pathogen interactions,and plant phytohormone signal transduction ***,transgenic maize plants overexpressing mi R408 b exhibited reduced resistance to *** infection in a susceptible maize *** findings provide new insights into the regulatory roles of mi RNAs in maize immunity against FER and new resources for breeding disease resistance into maize.

关键词： Maize MicroRNA fusarium ear rot Deep sequencing Disease resistance

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

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

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

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：