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Meta-analysis of QTL for Fusarium head blight resistance in Chinese wheat landraces

The Crop Journal 2019年第6期7卷 784-798页

作者： Jin Cai Shan Wang zhenqi su Tao Li Xianghui Zhang Guihua Bai Institute of Germplasm Resources and Biotechnology and Jiangsu Provincial Key Laboratory of Agrobiology Jiangsu Academy of Agricultural SciencesNanjing 210014JiangsuChina Department of Agronomy Kansas State UniversityManhattanKS 66506USA Institute of Cereal and Oil Crops Hebei Academy of Agricultural and Forestry SciencesShijiazhuang 050035HebeiChina Jiangsu Provincial Key Laboratory of Crop Genetics and Physiology Yangzhou UniversityYangzhou 225009JiangsuChina College of Plant Science Jilin UniversityChangchun 130062JilinChina United State Department of Agriculture-Agricultural Research Service Hard Winter Wheat Genetics Research UnitManhattanKS 66506USA

Epidemics of Fusarium head blight(FHB), incited by Fusarium graminearum Schwabe, in wheat cause significant reductions in grain yield and quality. Numerous quantitative trait loci(QTL) for FHB resistance have been reported from Chinese sources. However, the relationships among QTL from different landraces have not been characterized. We earlier mapped QTL for FHB resistance using low-density maps developed from five recombinant inbred line(RIL) populations involving Chinese landraces ‘Haiyanzhong’(HYZ),‘Wangshuibai’(WSB), ‘Baishanyuehuang’(BSYH), ‘Huangfangzhu’(HFZ), and‘Huangcandou’(HCD) as FHB resistant parents. In this study, we used maps of single nucleotide polymorphisms(SNP) developed from the five populations and identified 31 QTL on 16 chromosomes;10 QTL were new. We constructed a consensus map and identified six meta-QTL(MQTL) and SNP within the MQTL regions using meta-analysis. Two of the MQTL were on chromosome 3 BS(3 BSd and 3 BSc), and one on each of chromosomes 3A, 2D, 3D,and 4D. Twenty-two SNP closely linked to MQTL were converted into breeder friendly Kompetitive Allele Specific Polymerase Chain Reaction(KASP) assays, which should be useful for marker-assisted selection in breeding programs.

关键词： Genotyping-by-sequencing FHB resistance KASP Meta-analysis of QTL Single nucleotide polymorphism Triticum aestivum

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Identification of a major QTL for Hessian fly resistance in wheat cultivar‘Chokwang’

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The Crop Journal 2022年第3期10卷 775-782页

作者： Lirong Zhang Yunfeng Xu Ming-Shun Chen zhenqi su Yang Liu Yuzhou Xu Guixiao La Guihua Bai Department of Plant Pathology College of Plant ProtectionHebei Agricultural UniversityBaoding 071001HebeiChina Department of Agronomy Kansas State UniversityManhattanKS 66506USA Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei Province Baoding 071001HebeiChina Hard Winter Wheat Genetics Research Unit USDA-ARSManhattanKS 66506USA State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization(MOE)and Beijing Key Laboratory of Crop Genetic Improvement China Agricultural UniversityBeijing 100193China Institute of South subtropical Crops Chinese Academy of Tropical Agricultural SciencesZhanjiang 524013GuangdongChina Industrial Crop Research Institute Henan Academy of Agricultural SciencesZhengzhou 450002HenanChina

The Hessian fly(HF,Mayetiola destructor)is one of the destructive pests of wheat(Triticum aestivum L.)*** cultivars can effectively minimize wheat damage due to this insect *** identify new quantitative trait loci(QTL)for HF resistance,a population of recombinant inbred lines(RILs)was developed from a cross between the HF-resistant wheat cultivar‘Chokwang’and susceptible wheat‘Ning 7840’,and phenotyped for responses to HF attack.A linkage map was constructed using 1147 single nucleotide polymorphism(SNP)markers generated from genotyping-by-sequencing(GBS).One major QTL,***-6 BS,for HF-resistance was identified on chromosome arm 6 BS,which explained up to84.0%of the phenotypic variation and was contributed by *** RILs showed recombination in the candidate interval of ***-6 BS,which delimited ***-6 BS to a 4.75 Mb physical interval between 6,028,601 bp and 10,779,424 bp on chromosome arm 6 BS of IWGSC Chinese Spring reference genome Ref Seq *** GBS-SNPs in the candidate interval were converted into Kompetitive allele specific polymerase chain reaction(KASP)*** of them,KASP-6 B112698 and KASP-6 B7901215,were validated in a *** wheat ***-6 B112698 was nearly diagnostic,thus can be used to screen ***-6 BS and pyramid it with other resistance genes in breeding programs.

关键词： Wheat Hessian fly resistance Mayetiola destructor KASP GBS

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Development and identification of a dwarf wheat-Leymus mollis double substitution line with resistance to yellow rust and Fusarium head blight

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The Crop Journal 2019年第4期7卷 516-526页

作者： Jixin Zhao Yang Liu Xueni Cheng Yuhui Pang Jiachuang Li zhenqi su Jun Wu Qunhui Yang Guihua Bai Xinhong Chen Shaanxi Key Laboratory of Genetic Engineering for Plant Breeding College of Agronomy Northwest A&F University Yangling 712100 Shaanxi China College of Life Sciences Northwest A&F University Yangling 712100 Shaanxi China College of Agriculture Henan University of Science and Technology Luoyang 471023 Henan China Institute of Cereal and Oil Crops Hebei Academy of Agricultural and Forestry Sciences Shijiazhuang 050035 Hebei China USDA Hard Winter Wheat Genetics Research Unit 4008 Throckmorton Hall Manhattan KS 66506 USA

Leymus mollis (Trin.) Pilger (2n = 4x = 28, NsNsXmXm,), a wild relative of common wheat, possesses many potentially valuable traits for genetic improvement of wheat, including strong, short stems, long spikes with numerous spikelets, tolerance to drought and cold stresses, and resistance to many fungal and bacterial diseases. In the present study, a wheat-L. mollis double substitution line DM96 was selected from a F6 progeny of a cross between M842-16 (an octoploid Tritileymus line) and D4286 (a Triticum durum line) using genomic in situ hybridization (GISH), simple sequence repeat (SSR) markers, and expressed sequence tagged sequence site (EST-STS) markers. Chromosome analysis at mitosis and meiosis showed that DM96 had a chromosome constitution of 2n = 42 = 21II. GISH analysis indicated that DM96 carried 38 chromosomes from wheat and two homologous pairs of Ns chromosomes from L. mollis. Fluorescent in situ hybridization (FISH) showed that chromosomes 2Ns and 3Ns from L. mollis had replaced wheat chromosomes 2D and 3D in DM96, which was confirmed by SSR and STS markers. The newly developed substitution line DM96 has shorter height, longer spikes and more kernels than its parents and showed high resistance to stripe rust and Fusarium head blight (FHB). Thus, this line is a new bridge material for the production of useful translocation lines for wheat genetic research and genetic improvement of wheat yield and disease resistance in breeding programs.

关键词： Disease resistance Double substitution line Dwarfing Triticum aestivum

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lcQTH:Rapid quantitative trait mapping by tracing parental haplotypes with ultra-low-coverage sequencing

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Plant Communications 2024年第10期5卷 5-7页

作者： Wenxi Wang Zhe Chen Zhengzhao Yang Zihao Wang Jilu Liu Jie Liu Huiru Peng zhenqi su Zhongfu Ni Qixin sun Weilong Guo Frontiers Science Center for Molecular Design Breeding Key Laboratory of Crop Heterosis and UtilizationBeijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing 100193China

Dear Editor,Gene cloning has a fundamental role in crop research but has long been hindered by high costs and labor requirements,which have limited the numbers of genes that have been functionally characterized,especially in wheat(Liang et al.,2021).Quantitative trait locus(QTL)mapping is the first step in gene cloning,enabling the localization of genomic loci that show significant associations with quantitative *** commonly used strategy is based on single-nucleotide polymorphism(SNP)arrays(sun et al.,2020).

关键词： trait mapping parental

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A highly conserved amino acid in high molecular weight glutenin subunit 1Dy12 contributes to gluten functionality and processing quality in wheat

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Journal of Genetics and Genomics 2023年第11期50卷 909-912页

作者： Changfeng Yang Qian Chen Mingming Xin zhenqi su Jinkun Du Weilong Guo Zhaorong Hu Jie Liu Huiru Peng Zhongfu Ni Qixin sun Yingyin Yao Frontiers Science Center for Molecular Design Breeding Key Laboratory of Crop Heterosis and Utilization(MOE)Beijing Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing 100193China

Bread wheat(Triticum aestivum L.)is one of the most commonly consumed staples worldwide,with widespread uses in foods such as breads,noodles,cakes,and cookies(Veraverbeke and Delcour,2002).The specific cooking properties of wheat products are mainly conferred by the gluten proteins contained in wheat grains(Delcour et al.,2012).High molecular weight glutenin subunits(HMW-GSs)are important constituents of wheat gluten proteins,largely determining gluten elasticity and processing quality(Branlard and Dardevet,1985;Payne et al.,1988).

关键词： weight wheat gluten

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Effects of the Fhb1 gene on Fusarium head blight resistance and agronomic traits of winter wheat

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The Crop Journal 2019年第6期7卷 799-808页

作者： Teng Li Hongjun Zhang Yiwen Huang zhenqi su Yun Deng Hongwei Liu Chunyan Mai Guangjun Yu Huili Li Liqiang Yu Tongquan Zhu Li Yang Hongjie Li Yang Zhou National Engineering Laboratory for Crop Molecular Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Institute of Cereal and Oil Crops Hebei Academy of Agriculture and Forestry SciencesShijiazhuang 050035HebeiChina Nanping Institute of Agricultural Sciences of Fujian Province Jianyang 354200FujianChina Xinxiang Innovation Center for Breeding Technology of Dwarf-Male-Sterile Wheat Xinxiang 453731HenanChina Zhaoxian Experiment Station Shijiazhuang Academy of Agricultural and Forestry SciencesZhaoxian 051530HebeiChina Wheat Research Institute Zhumadian Academy of Agricultural SciencesZhumadian 463000HenanChina

The gene Fhb1 has been used in many countries to improve wheat Fusarium head blight(FHB) resistance. To make better use of this gene in the Yellow-Huai River Valleys Winter Wheat Zone(YHWZ), the most important wheat-producing region of China, it is desirable to elucidate its effects on FHB resistance and agronomic traits in different genetic backgrounds. Based on a diagnostic marker for Fhb1, six BC2 populations were developed by crossing dwarf-male-sterile(DMS)-Zhoumai 16 to three Fhb1 donors(Ningmai 9, Ningmai 13, and Jianyang 84) and backcrossing to Zhoumai 16 and Zhoumai16’s derivative cultivars(Lunxuan 136 and Lunxuan 13) using marker-assisted backcross breeding. The progenies were assessed for FHB resistance and major agronomic *** Fhb1 alleles were identified using the gene-specific molecular marker. The plants with the Fhb1-resistant genotype(Fhb1-R) in these populations showed significantly fewer infected spikelets than those with the Fhb1-susceptible genotype(Fhb1-S). When Lunxuan 136 was used as the recurrent parent, Fhb1-R plants showed significantly fewer infected spikelets per spike than Fhb1-R plants produced using Lunxuan 13 as the recurrent parent, indicating that the genetic backgrounds of Fhb1 influence the expression of FHB resistance. Fhb1-R plants from the DMS-Zhoumai 16/Ningmai 9//Zhoumai 16/3/Lunxuan 136 population showed the highest FHB resistance among the six populations and a significantly higher level of FHB resistance than the moderately susceptible control Huaimai 20. No significant phenotypic differences between Fhb1-R and Fhb1-S plants were observed for the eight agronomic traits investigated. These results suggest that it is feasible to improve FHB resistance of winter wheat withoutreducing yield potential by introgressing Fhb1 resistance allele into FHB-susceptible cultivars in the YHWZ.

关键词： Triticum aestivum L. Fhb1 gene Marker-assisted selection Fusarium head blight resistance Agronomic traits

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TaACTIN7-D regulates plant height and grain shape in bread wheat

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Journal of Genetics and Genomics 2023年第11期50卷 895-908页

作者： Xiongtao Li Beilu Cao Dejie Du Long Song Lulu Tian Xiaoming Xie Zhaoyan Chen Yanpeng Ding Xuejiao Cheng Yingyin Yao Weilong Guo zhenqi su Qixin sun Zhongfu Ni Lingling Chai Jie Liu Frontiers Science Center for Molecular Design Breeding China Agricultural UniversityBeijing 100193China State Key Laboratory for Crop Genetics and Germplasm Enhancement Nanjing Agricultural UniversityNanjingJiangsu 210095China

Exploitation of new gene resources and genetic networks contributing to the control of crop yield-related traits,such as plant height,grain size,and shape,may enable us to breed modern high-yielding wheat varieties through molecular *** this study,via ethylmethanesulfonate mutagenesis,we identify a wheat mutant plant,mu-597,that shows semi-dwarf plant architecture and round grain *** bulked segregant RNA-seq and map-based cloning,the causal gene for the semi-dwarf phenotype of mu-597 is *** find that a single-base mutation in the coding region of TaACTIN7-D(TaACT7-D),leading to a Gly-to-Ser(G65S)amino acid mutation at the 65th residue of the deduced TaACT7-D protein,can explain the semi-dwarfism and round grain shape of *** evidence shows that the G65S mutation in TaACT7-D hinders the polymerization of actin from monomeric(G-actin)to filamentous(F-actin)status while attenuates wheat responses to multiple phytohormones,including brassinosteroids,auxin,and ***,these findings not only define a new semi-dwarfing gene resource that can be potentially used to design plant height and grain shape of bread wheat but also establish a direct link between actin structure modulation and phytohormone signal transduction.

关键词： Wheat(Triticum aestivum L.) Plant height Grain shape TaACT7-D Phytohormone signaling

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Ectopic expression of VRT-A2 underlies the origin of Triticum polonicum and Triticum petropavlovskyi with long outer glumes and grains

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Molecular Plant 2021年第9期14卷 1472-1488页

作者： Jing Liu Zhaoyan Chen Zhihui Wang Zhaoheng Zhang Xiaoming Xie Zihao Wang Lingling Chai Long Song Xuejiao Cheng Man Feng Xiaobo Wang Yanhong Liu Zhaorong Hu Jiewen Xing zhenqi su Huiru Peng Mingming Xin Yingyin Yao Weilong Guo Qixin sun Jie Liu Zhongfu Ni State Key Laboratory for Agrobiotechnology and Key Laboratory of Crop Heterosis and Utilization(MOE)and Beijing Key Laboratory of Crop Genetic Improvement China Agricultural UniversityBeijing 100193P.R.China

Polish wheat (Triticum polonicum) is a unique tetraploid wheat species characterized by an elongated outer glume. The genetic control of the long-glume trait by a single semi-dominant locus, P1 (from Polish wheat), was established more than 100 years ago, but the underlying causal gene and molecular nature remain elusive. Here, we report the isolation of VRT-A2, encoding an SVP-clade MADS-box transcription factor, as the P1 candidate gene. Genetic evidence suggests that in T. polonicum, a naturally occurring sequence rearrangement in the intron-1 region of VRT-A2 leads to ectopic expression of VRT-A2 in floral organs where the long-glume phenotype appears. Interestingly, we found that the intron-1 region is a key ON/OFF molecular switch for VRT-A2 expression, not only because it recruits transcriptional repressors, but also because it confers intron-mediated transcriptional enhancement. Genotypic analyses using wheat accessions indicated that the P1 locus is likely derived from a single natural mutation in tetraploid wheat, which was subsequently inherited by hexaploid T. petropavlovskyi. Taken together, our findings highlight the promoter-proximal intron variation as a molecular basis for phenotypic differentiation, and thus species formation in Triticum plants.

关键词： long glume P1 species differentiation T.polonicum VRT-A2

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The TaTCP4/10-B1 cascade regulates awn elongation in wheat(Triticum aestivum L.)

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Plant Communications 2023年第4期4卷 255-270页

作者： Wensheng Ke Jiewen Xing Zhaoyan Chen Yidi Zhao Weiya Xu Lulu Tian Jinquan Guo Xiaoming Xie Dejie Du Zihao Wang Yufeng Li Jin Xu Mingming Xin Weilong Guo Zhaorong Hu zhenqi su Jie Liu Huiru Peng Yingyin Yao Qixin sun Zhongfu Ni Frontiers Science Center for Molecular Design Breeding Key Laboratory of Crop Heterosis and Utilization(MOE)Key Laboratory of Crop Genetic ImprovementChina Agricultural UniversityBeijing 100193China

Awns are important morphological markers for wheat and exert a strong physiological effect on wheat *** awn elongation suppressor B1 has recently been cloned through association and linkage analysis in ***,the mechanism of awn inhibition centered around B1 remains to be ***,we identified an allelic variant in the coding region of B1 through analysis of re-sequencing data;this variant causes an amino acid substitution and premature termination,resulting in a long-awn *** analysis indicated that B1 inhibited awn elongation by impeding cytokinin-and auxinpromoted cell ***,B1 directly repressed the expression of TaRAE2 and TaLks2,whose orthologs have been reported to promote awn development in rice or *** importantly,we found that TaTCP4 and TaTCP10 synergistically inhibited the expression of B1,and a G-to-A mutation in the B1 promoter attenuated its inhibition by TaTCP4/*** together,our results reveal novel mechanisms of awn development and provide genetic resources for trait improvement in wheat.

关键词： TaTCP4/10 B1 awn length haplotype wheat

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血脂变异性对急性ST段抬高型心肌梗死急诊经皮冠脉介入术后不良心血管事件的预测价值

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实用医学杂志 2024年第15期40卷 2121-2125页

作者：谢伟苏振琪淮北矿工总医院心血管内科安徽淮北235000

目的探究血脂变异性对急性ST段抬高型心肌梗死(STEMI)急诊经皮冠脉介入术(PCI)后患者不良心血管事件的预测价值。方法选取2020年10月至2022年10月收治的235例行急诊PCI的STEMI患者为研究对象,根据是否发生靶血管失败(TLF)将患者分为TLF... 详细信息

目的探究血脂变异性对急性ST段抬高型心肌梗死(STEMI)急诊经皮冠脉介入术(PCI)后患者不良心血管事件的预测价值。方法选取2020年10月至2022年10月收治的235例行急诊PCI的STEMI患者为研究对象,根据是否发生靶血管失败(TLF)将患者分为TLF组和对照组,比较两组的血脂变异性[标准差(SD)、变异系数(CV)及独立于均值的变异系数(VIM)],采用多因素Cox回归分析探究STEMI急诊PCI术后患者发生TLF的相关因素,并采用受试者工作特征曲线(ROC)分析预测价值。结果TLF组患者低密度脂蛋白(LDL)、高密度脂蛋白(HDL)及脂蛋白a[LP(a)]的变异性指标LDL(SD)、LDL(CV)、LDL(VIM)、HDL(SD)、HDL(CV)、HDL(VIM)、LP(a)(SD)、LP(a)(CV)、LP(a)(VIM)均高于对照组,差异均有统计学意义(P<0.05)。多因素Cox回归分析结果显示,LDL(SD)、LDL(CV)、LDL(VIM)、HDL(SD)、HDL(CV)、HDL(VIM)、LP(a)(SD)、LP(a)(CV)、LP(a)(VIM)均是影响STEMI急诊PCI术后患者发生TLF的危险因素(P<0.05)。ROC曲线分析结果显示,LDL(SD)、LDL(CV)、LDL(VIM)、HDL(SD)、HDL(CV)、HDL(VIM)、LP(a)(SD)、LP(a)(CV)、LP(a)(VIM)对STEMI急诊PCI术后患者发生TLF具有一定预测价值(AUC:0.790、0.805、0.833、0.766、0.795、0.816、0.773、0.782、0.798)。结论血脂变异性与STEMI急诊PCI术后患者不良心血管事件有关,是STEMI急诊PCI术后患者发生TLF的独立危险因素。

关键词：血脂变异性急性ST段抬高型心肌梗死经皮冠脉介入术不良心血管事件

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