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Identification of a stable major QTL for fresh-seed germination on chromosome Arahy.04 in cultivated peanut(Arachis hypogaea L.)

中国植物病理学会2019年学术年会

作者： Qi Tuo 郭军康振生 state key laboratory of crop stress Biology for Arid Areas and College of Plant Protection Northwest A&F University

Rust fungi are devastating plant pathogens and cause a large economic impact on wheat production *** resistant wheat varieties is the most economical,effective,and environmentally friendly approach for controlling the ***,most race-specific host resistance genes have transient protection,probably due to the rapid evolution of new virulent rust fungal *** interference is a prospective tool for control of pathogenic fungi that has been experimentally validated in a large number of *** overcome the rapidly loss of varieties resistance of Pst,we generated stable transgenic wheat plants expressing siRNAs targeting potentially vital genes of Puccinia striiformis ***(Pst).Protein kinase A(PKA) has been proved to play important roles in regulating the virulence of phytopathogenic ***1,a PKA catalytic subunit gene from Pst,is highly induced at the early infection stage of *** instantaneous silencing of PsCPK1 by barley stripe mosaic virus(BSMV)-mediated host-induced gene silencing(HIGS) results in a significant reduction in the length of infection hyphae and disease *** results indicate that PsCPK1 is an important pathogenicity factor by regulating Pst growth and *** transgenic lines(L12 and L18) expressing the RNAi construct in a normally susceptible wheat cultivar displayed high levels of stable and consistent resistance to Pst throughout the T to T *** presence of the interfering RNAs in transgenic wheat plants was confirmed by northern blotting,and these RNAs were found to efficiently down-regulate PsCPK1 expression in *** present study addresses important aspects for the development of fungal-derived resistance through the expression of silencing constructs in host plants as a powerful strategy to control cereal rust diseases and contribute to environmentally friendly and sustainable agriculture.

关键词： wheat stripe rust PKA HIGS transgene RNA interference

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The crop Journal 2022年第6期10卷 1767-1773页

作者： Maoning Zhang Qing Zeng Hua Liu Feiyan Qi Ziqi Sun Lijuan Miao Xiaona Li Chenyu Li Debing Liu Junjia Guo Mengyuan Zhang Jing Xu Lei Shi Mengdi Tian Wenzhao Dong Bingyan Huang Xinyou Zhang Innovation Base of Zhengzhou University Henan Academy of Agricultural Sciences/Henan Academy of Crop Molecular Breeding/State Industrial Innovation Center of Biological Breeding/Key Laboratory of Oil Crops in Huang-Huai-Hai PlainsMinistry of Agriculture/Henan Provincial Key Laboratory for Oil Crops ImprovementZhengzhou 450002HenanChina School of Agricultural Sciences Zhengzhou UniversityZhengzhou 450002HenanChina state key laboratory of Cotton Biology Institute of Cotton ResearchChinese Academy of Agricultural SciencesAnyang 455000HenanChina College of Applied Science and Technology of Hainan University Danzhou 571737HainanChina College of Agriculture Henan University of Science and TechnologyLuoyang 471023HenanChina

Fresh-seed germination(FSG)impairs peanut production,especially in areas where the peanut harvest season coincides with rainy *** FSG-resistant cultivars by molecular breeding is expected to mitigate yield loss and quality impairment caused by ***,the genetic control of FSG awaits *** this study,FSG at 1,3,5,7,and 9 days post-imbibition in three environments were tested,and quantitative-trait loci(QTL)associated with FSG were mapped in a peanut recombinant inbred line population by leveraging existing high-density peanut genetic *** 24 QTL identified in 13 linkage groups,qFSGA04 was a stable major QTL on linkage group 04(LG04).It was consistently detected in five germination stages and three *** designing and validating DNA markers in the confidence interval of qFSGA04,we identified one single-nucleotide polymorphism and one In Del closely associated with FSG that could be used as linked markers for FSG resistance in peanut breeding.

关键词： Peanut QTL mapping Fresh-seed germination(FSG) Dynamic germination KASP

Mapping a stable adult-plant stripe rust resistance QTL on chromosome 6AL in Chinese wheat landrace Yibinzhuermai

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The crop Journal 2022年第4期10卷 1111-1119页

作者： Mei Deng Li Long Yukun Cheng Fangjie Yao Fangnian Guan Yuqi Wang Hao Li Zhien Pu Wei Li Qiantao Jiang Yuming Wei Jian Ma Houyang Kang Pengfei Qi Jirui Wang Youliang Zheng Yunfeng Jiang Guoyue Chen state key laboratory of crop Gene Exploitation and Utilization in Southwest China WenjiangChengdu 611130SichuanChina Triticeae Research Institute Sichuan Agricultural UniversityWenjiangChengdu 611130SichuanChina College of Agronomy Sichuan Agricultural UniversityWenjiangChengdu 611130SichuanChina

Stripe rust,caused by Puccinia striiformis ***(Pst),is one of the most important diseases threatening the yield and stability of wheat production in China and many other *** and utilization of new genes for durable stripe rust resistance are important for ongoing control of this *** objectives of this study were to identify quantitative trait loci(QTL)associated with adult-plant stripe rust resistance in the Chinese wheat landrace Yibinzhuermai(YBZR)and to provide wheat breeders with new sources of potentially durable resistance.A total of 117 recombinant inbred lines(RILs)(F5:8)derived from a cross between YBZR and highly susceptible cultivar Taichung 29(TC29)were assessed for stripe rust severity in field experiments at Wenjiang in 2016 and 2017 and Chongzhou in 2016,2017,2018,and 2019 in Sichuan following inoculation with a mixture of current Pst *** RILs were genotyped using the Wheat55K single nucleotide polymorphism(SNP)*** QTL were identified on chromosome arms 6AL,5BL and ***-6AL and ***-7DS conferred major effects in all field environments,explaining 10.6%to 14.7%and 11.5%to 21.2%of phenotypic variation,*** QTL on 5BL and 7DS likely correspond to previously known QTL,whereas ***-6AL is probably *** analysis revealed that the resistance allele at ***-6AL was present in 2.8%of 324 Chinese wheat *** markers closely linked with ***-6AL were converted to kompetitive allele-specific PCR markers and validated in the RIL population and a subset of 92 wheat ***-6AL and its markers should be useful in breeding programs to improve the level and durability of stripe rust resistance.

关键词： Puccinia striiformis QTL mapping Single nucleotide polymorphism Yellow rust

Fine mapping and transcriptome sequencing reveal candidate genes conferring all-stage resistance to stripe rust on chromosome arm 1AL in Chinese wheat landrace AS1676

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作物学报:英文版 2023年第5期11卷 1501-1511页

作者： Xiu Yang Yunfeng Jiang Xianghai Yu Haipeng Zhang Yuqi Wang Fangnian Guan Li Long Hao Li Wei Li Qiantao Jiang Jirui Wang Yuming Wei Jian Ma Houyang Kang Pengfei Qi Qiang Xu Meng Deng Yazhou Zhang Youliang Zheng Yonghong Zhou Guoyue Chen state key laboratory of crop Gene Exploitation and Utilization in Southwest China WenjiangChengdu 611130SichuanChina Triticeae Research Institute Sichuan Agricultural UniversityWenjiangChengdu 611130SichuanChina College of Agronomy Sichuan Agricultural UniversityWenjiangChengdu 611130SichuanChina

Stripe rust, caused by Puccinia striiformis f. sp. tritici(Pst), threatens wheat production worldwide, and resistant varieties tend to become susceptible after a period of cultivation owing to the variation of pathogen races. In this study, a new resistance gene against Pst race CYR34 was identified and predicted using the descendants of a cross between AS1676, a highly resistant Chinese landrace, and Avocet S, a susceptible cultivar. From a heterozygous plant from a F7recombinant inbred line(RIL) population lacking the Yr18 gene, a near-isogenic line(NIL) population was developed to map the resistance gene. An allstage resistance gene, YrAS1676, was identified on chromosome arm 1AL via bulked-segregant exomecapture sequencing. By analyzing a large NIL population consisting of 6537 plants, the gene was further mapped to the marker interval between KA1A_485.36 and KA1A_490.13, spanning 485.36–490.13 Mb on1AL. A total of 66 annotated genes have been reported in this region. To characterize and predict the candidate gene(s), an RNA-seq was performed using NIL-R and NIL-S seedlings 3 days after CYR34 inoculation. Compared to NIL-S plants, NIL-R plants showed stronger immune reaction and higher expression levels of genes encoding pathogenesis-associated proteins. These differences may help to explain why NIL-R plants were more resistant to Pst race CYR34 than NIL-S plants. By combining fine-mapping and transcriptome sequencing, a calcium-dependent protein kinase gene was finally predicted as the potential candidate gene of YrAS1676. This gene contained a single-nucleotide polymorphism. The candidate gene was more highly expressed in NIL-R than in NIL-S plants. In field experiments with Pst challenge,the YrAS1676 genotype showed mitigation of disease damage and yield loss without adverse effects on tested agronomic traits. These results suggest that YrAS1676 has potential use in wheat stripe rust resistance breeding.

关键词： Stripe rust All-stage resistance(ASR) BSE-Seq Transcriptome analyses Candidate genes

Characterization of the chemical fungicides-responsive and bacterial pathogen-preventing Bacillus licheniformis in rice spikelet

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Food Quality and Safety 2023年第2期7卷 256-266页

作者： Chengfang Zhan Mengchen Wu Hongda Fang Xiaoyu Liu Jiuyue Pan Xiaoyan Fan Mengcen Wang Haruna Matsumoto state key laboratory of Rice Biology&Ministry of Agricultural and Rural Affairs laboratory of Molecular Biology of crop Pathogens and Insects Zhejiang UniversityHangzhouChina key laboratory of Biology of crop Pathogens and Insects of Zhejiang Province Institute of Pesticide and Environmental ToxicologyCollege of Agriculture and BiotechnologyZhejiang UniversityHangzhouChina Zhejiang laboratory for Systems&Precision Medicine Zhejiang University Medical CenterHangzhouChina School of Medicine Zhejiang UniversityHangzhouChina College of Plant Protection Hunan Agricultural UniversityHunanChina Plant Genetics TUM School of Life SciencesTechnical University of MunichFreisingGermany Global Education Program for AgriScience Frontiers Graduate School of AgricultureHokkaido UniversitySapporoJapan

Seed-borne bacterial pathogens cause severe yield loss and biotoxin contamination in rice,leading to increasing concern on the global food supply and environmental *** native microbes play an important role in defending against diseases,but their actions are often influ-enced by the chemical fungicides applied in the ***,Bacillus licheniformis mmj was isolated from rice spikelet,which uniquely showed not only fungicide-responsiveness but also broad-spectrum antimicrobial activity against major rice bacterial pathogens including Xanthomonas oryzae ***,Burkholderia plantari and Burkholderia *** understand the hallmark underlying the environmental adaptation and anti-microbial activity of *** mmj,the genome sequence was determined by SMRT and subjected to bioinformatics *** sequence analysis enabled the identification of a set of antimicrobial-resistance and antibacterial activity genes together with an array of harsh environment-adaptive ***,*** mmj metabolites were analyzed with gas chromatography coupled to triple quadrupole mass spectrometry,and the volatile components that were linked with the antimicrobial activity were preliminarily ***,the present findings reveal the genomic and metabolic landscapes underlying fungicide-responsive ***,which offers a new opportunity to design harsh environment-adaptive biopesticides to cope with prevalent bacterial phytopathogens.

关键词： Bacillus licheniformis fungicide adaptation antimicrobial activity genomics metabolites rice production

Genetic and molecular exploration of maize environmental stress resilience:Toward sustainable agriculture

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Molecular Plant 2023年第10期16卷 1496-1517页

作者： Zhirui Yang Yibo Cao Yiting Shi Feng Qin Caifu Jiang Shuhua Yang state key laboratory of Plant Environmental Resilience Frontiers Science Center for Molecular Design BreedingCollege of Biological SciencesChina Agricultural UniversityBeijing 100193China

Global climate change exacerbates the effects of environmental stressors,such as drought,flooding,extreme temperatures,salinity,and alkalinity,on crop growth and grain yield,threatening the sustainability of the food ***(Zea mays)is one of the most widely cultivated crops and the most abundant grain crop in production ***,the stability of maize yield is highly dependent on environmental ***,great progress has been made in understanding the molecular mechanisms underlying maize responses to environmental stresses and in developing stress-resilient varieties due to advances in high-throughput sequencing technologies,multi-omics analysis platforms,and automated phenotyping *** this review,we summarize recent advances in dissecting the genetic factors and networks that contribute to maize abiotic stress tolerance through diverse *** also discuss future challenges and opportunities for the development of climate-resilient maize varieties.

关键词： maize abiotic stress drought extreme temperatures salinity resistance

Effects of Acetylsalicylic Acid and Calcium Chloride on Photosynthetic Apparatus and Reactive Oxygen-Scavenging Enzymes in Chrysanthemum Under Low Temperature stress with Low Light

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Agricultural Sciences in China 2010年第12期9卷 1777-1786页

作者： FENG Zhen LIANG Fang ZHENG Cheng-shu SHU Huai-rui SUN Xian-zhi Yoo Yong-kweon College of Horticulture Science and Engineering Shandong Agricultural University Tai＇an 271018 P.R.China state key laboratory of crop Biology Shandong Agricultural University Tai＇an 271018P.R.China National apple Engineering Technique Center Tai＇an 271018 P.R.China College of Natural Sciences Mokpo Nationeal University Moo an Junramamdo 534-729 P.R.Korea

The effects of acetylsalicylic acid （ASA）, CaCl2, and ASA ＋ CaCl2 on the photosynthetic apparatus and antioxidant enzyme activities were investigated in chrysanthemum Jinba （a cut flower cultivar） under low temperature stress with low light （TL stress）（16/12℃, day/night, PFD 100 μmol m^-2 s-1）. The results showed that under TL stress, the net photosynthesis rate （Pn）, carboxylation efficiency （CE）, apparent quantum yield （AQY）, maximal photochemical efficiency （Fv/Fm） of PSII, quantum yield of PSII electron transport （ФPSII）, and photochemical quenching （qP） of the chrysanthemum leaves in all treatments were significantly decreased, but the decreases were alleviated by ASA, CaCl2, and ASA ＋ CaCl2 treatments compared with the controls. The alleviating effect of ASA ＋ CaCI2 was better than either ASA or CaCl2 single treatment. Moreover, the ASA ＋ CaCl2 treatment highly improved the chlorophyll content, relatively improved the number and size of chloroplast and starch grain in the leaves of chrysanthemum plants compared with ASA and CaCl2 treatments. It was indicated that ASA and/or CaCI2 could regulate the photosynthetic functions in the leaves of chrysanthemum plants to enhance the resistance against TL stress. On the other hand, reduction in relative conductance rate implied that ASA and/ or CaCl2 could protect from membrane injury in leaves of chrysanthemum plants. The activities of SOD, POD, and CAT in the treated leaves of chrysanthemum were increased as compared with the controls. It was suggested that ASA and/or CaCl2 had positive regulation effects on the defence enzyme activities in chrysanthemum leaves which could protect the photosynthetic apparatus to a certain degree under the TL stress. In brief, the treatment of ASA together with CaCl2 was better for chrysanthemum plants to adapt TL stress than single ASA or CaCl2 treatments.

关键词： acetylsalicylic acid Ca^2+ chrysanthemum low temperature low light photosynthetic apparatus antioxidantenzyme

Natural variations of ZmSRO1d modulate the trade-off between drought resistance and yield by affecting ZmRBOHC-mediated stomatal ROS production in maize

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Molecular Plant 2022年第10期15卷 1558-1574页

作者： Huajian Gao Junjun Cui Shengxue Liu Shuhui Wang Yongyan Lian Yunting Bai Tengfei Zhu Haohao Wu Yijie Wang Shiping Yang Xuefeng Li Junhong Zhuang Limei Chen Zhizhong Gong Feng Qin key laboratory of Plant Molecular Physiology Institute of BotanyChinese Academy of SciencesBeijing 100093China University of Chinese Academy of Sciences Beijing 100049China state key laboratory of Plant Physiology and Biochemistry College of Biological SciencesChina Agricultural UniversityBeijing 100193China Center for crop Functional Genomics and Molecular Breeding China Agricultural UniversityBejing 100193China School of Life Science Institute of Life Science and Green DevelopmentHebei UniversityBaodingHebei071002China

While crop yields have historically increased,drought resistance has become a major concern in the context of global climate *** trade-off between crop yield and drought resistance is a common phenomenon;however,the underlying molecular modulators remain *** genome-wide association study,we revealed that three non-synonymous variants in a drought-resistant allele of ZmSRO1d-R resulted in plasma membrane localization and enhanced mono-ADP-ribosyltransferase activity of ZmSRO1d toward ZmRBOHC,which increased reactive oxygen species(ROS)levels in guard cells and promoted stomatal ***1d-R enhanced plant drought resilience and protected grain yields under drought conditions,but it led to yield drag under favorable *** contrast,loss-of-function mutants of ZmRBOHC showed remarkably increased yields under well-watered conditions,whereas they showed compromised drought ***,by analyzing 189 teosinte accessions,we found that the ZmSRO1d-R allele was present in teosinte but was selected against during maize domestication and modern ***,our work suggests that the allele frequency reduction of ZmSRO1d-R in breeding programs may have compromised maize drought resistance while increased ***,introduction of the ZmSRO1d-R allele into modern maize cultivars would contribute to food security under drought stress caused by global climate change.

关键词： ZmSRO1d stomatal ROS drought resistance yield maize

Pathogen development and host responses to Plasmopara viticola in resistant and susceptible grapevines:an ultrastructural study

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Horticulture Research 2017年第1期4卷 171-180页

作者： Xiao Yin Rui-Qi Liu Hang Su Li Su Yu-Rui Guo Zi-Jia Wang Wei Du Mei-Jie Li Xi Zhang Yue-Jin Wang Guo-Tian Liu Yan Xu state key laboratory of crop stress Biology in Arid Areas College of HorticultureNorthwest A&F UniversityYangling712100ShaanxiChina College of Horticulture Northwest A&F UniversityYangling712100ShaanxiChina key laboratory of Horticultural Plant Biology and Germplasm Innovation in Northwest China Ministry of AgricultureCollege of HorticultureNorthwest A&F UniversityYangling712100ShaanxiChina

The downy mildew disease in grapevines is caused by Plasmopara *** disease poses a serious threat wherever viticulture is *** Vitis species showing resistance to *** offer a promising pathway to develop new grapevine cultivars resistant to *** which will allow reduced use of environmentally unfriendly ***,transmission and scanning microscopy was used to compare the resistance responses to downy mildew of three resistant genotypes of *** ***,*** and *** and the suceptible *** cultivar‘Pinot Noir’.Following inoculation with sporangia of *** isolate‘YL’on *** cv.‘Pinot Noir’,the infection was characterized by a rapid spread of intercellular hyphae,a high frequency of haustorium formation within the host’s mesophyll cells,the production of sporangia and by the absence of host-cell *** contrast zoospores were collapsed in the resistant ***‘Baihe-35-1’,or secretions appeared arround stomata at the beginning of the infection period in *** ***‘Langao-5’and ***‘Liuba-8’.The main characteristics of the resistance responses were the rapid depositions of callose and the appearance of empty hyphae and the plasmolysis of penetrated ***,collapsed haustoria were observed in *** ***‘Langao-5’at 5 days post inoculation(dpi)and in ***‘Liuba-8’at 7 ***,necrosis extended beyond the zone of restricted colonization in all three resistant *** were absent in ***‘Liuba-8’and greatly decreased in *** ***‘Langao-5’and in ***‘Baihe-35-1’compared with in *** cv.‘Pinot Noir’.Overall,these results provide insights into the cellular biological basis of the incompatible interactions between the pathogen and the *** indicate a number of several resistant Chinese wild species that could be used in developing new cultivars having good l

关键词： cultivar resistant Vitis