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Dual roles of a pathogen protein in powdery mildew pathogenesis and RPW8.2 expression

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Dual roles of a pathogen protein in powdery mildew pathogene...

中国植物病理学会2021年学术年会

作者： ZHAO Jinghao HUANG Yanyan FAN Jing LI Yan PU Mei ZHOU Shixin ZHANG Jiwei ZHAO Zhixue JI Yunpeng HU Xiaohong WU Xianjun XIAO Shunyuan WANG Wenming Rice Research Institute & key laboratory for Major crop Diseases Sichuan Agricultural University state key laboratory of Exploration and Utilization of crop Gene Resources in Southwest China Sichuan Agricultural University Institute for Bioscience and Biotechnology Research University of Maryland

Powdery mildew（PM） fungi have to overcome plant defense responses to complete their life *** PM haustorium is a fungal structure that resides inside plant *** to powdery mildew 8.2（RPW8.2） is the first protein described to localize to the extra-haustorial membrane encasing the haustorium,conferring broad-spectrum disease ***,little is known on the interaction mechanism between RPW8.2 and ***,we describe the functions of RPW8.2-interacting protein 1 of Golovinomyces cichoracearum（GcR8 IP 1） in powdery mildew pathogenesis and RPW8.2 *** expression of the GcR8 IP1 in Arabidopsis resulted in suppression of immune responses,including callose deposition,production of reactive oxygen species and cell death,promoting leaf colonization of *** contrast,down-regulation of GcR8 IP1 by host induced gene silence（HIGS） in pad4-1 sid2-1 plants compromised the infection of PM leading to less fungal ***,we found that the RING finger domain of GcR8 IP1 associates with *** expression assays showed that GcR8 IP1 promotes RPW8.2 protein accumulation and affects RPW8.2 protein nucleocytoplasmic *** results suggest that activated RPW8.2-mediated immunity is GcR8 *** nucleocytoplasmic partitioning of RPW8.2 seems to be a prerequisite for PM resistance.

关键词： Arabidopsis Powdery mildew RPW8.2 nucleocytoplasmic partitioning broadspectrum resistance

Auxin regulates anthocyanin biosynthesis through the Aux/IAA–ARF signaling pathway in apple

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Horticulture Research 2018年第1期5卷 43-53页

作者： Yi-cheng Wang Nan Wang Hai-feng Xu Sheng-hui Jiang Hong-cheng Fang Meng-yu Su Zong-ying Zhang Tian-liang Zhang Xue-sen Chen state key laboratory of crop Biology College of Horticulture Science and EngineeringShandong Agricultural UniversityTai-AnShandongChina Collaborative Innovation Center of Fruit&Vegetable Quality and Efficient production in Shandong Tai-AnShandongChina

Auxin signaling,which is crucial for normal plant growth and development,mainly depends on ARF–Aux/IAA ***,little is known regarding the regulatory effects of auxin signaling on anthocyanin metabolism in apple(Malus domestica).We investigated the functions of MdARF13,which contains a repression domain and is localized to the *** protein was observed to interact with the Aux/IAA repressor,MdIAA121,through its C-terminal dimerization *** degradation experiments proved that MdIAA121 is an unstable protein that is degraded by the 26S ***,MdIAA121 stability is affected by the application of exogenous ***,the overexpression of MdIAA121 and MdARF13 in transgenic red-fleshed apple calli weakened the inhibitory effect of MdARF13 on anthocyanin *** results indicate that the degradation of MdIAA121 induced by auxin treatment can release MdARF13,which acts as a negative regulator of the anthocyanin metabolic ***,yeast two-hybrid,bimolecular fluorescence complementation,and pull-down assays confirmed that MdMYB10 interacts with MdARF13.A subsequent electrophoretic mobility shift assay and yeast one-hybrid assay demonstrated that MdARF13 directly binds to the promoter of MdDFR,which is an anthocyanin pathway structural ***,chromatin immunoprecipitation–quantitative real-time PCR results indicated that the overexpression of MdIAA121 clearly inhibits the recruitment of MdARF13 to the MdDFR *** findings further characterized the mechanism underlying the regulation of anthocyanin biosynthesis via Aux/IAA–ARF signaling.

关键词： Aux/IAA metabolism anthocyanin

Screening of rootstocks with resistance to chilling and continuous cropping but without compromising fruit quality for protected watermelon production

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Vegetable Research 2022年第1期2卷 88-97页

作者： Kai Xu Zhixiang Lan Qing Liu Yuxing Xue Jingyi Yan Zhuangzhuang Su Mengjie Cheng Feishi Luan Xian Zhang Hao Li state key laboratory of crop stress Biology for Arid Areas College of HorticultureNorthwest A&F UniversityYangling 712100ShaanxiChina College of Horticulture and Landscape Architecture Northeast Agricultural UniversityHarbin 150000HeilongjiangChina

Chilling stress and continuous cropping obstacles limit sustainable production of watermelons under controlled *** of watermelon scions onto resistant rootstocks is an effective strategy currently used to overcome these environment ***,currently used commercial rootstocks adversely affect watermelon fruit *** chilling tolerance and Fusarium oxysporum *** race 1(FON1)resistance of seven Cucurbit germplasms,including four watermelon germplasms(M08,TC,YL,and MY),two muskmelon cultivars(JT1 and JSM),and one commercial Cucurbita rootstock(QZ1)of watermelon,were explored in the current *** effects of the rootstocks of these germplasms on watermelon resistance to chilling stress and continuous cropping obstacles were *** rootstock showed the highest chilling tolerance and increased chilling tolerance of watermelon *** Cucurbit germplasms showed higher resistance to FON1 than watermelon cultivar N5(control).Watermelons grafted onto QZ1 showed the lowest wilt incidence and highest fruit yield but had the worst fruit quality after planting on soils continuously cropped for 11 *** grafted onto TC showed higher resistance and yield and the best fruit *** findings indicate that TC has a large potential for use in grafting watermelon planted in continuously cropped soils(resistance against continuous cropping obstacles without compromising fruit quality.

关键词： chilling cultivar planted

Functional Characterization of Wheat Cellulose Synthase TaCESA7 in the Interaction Between Wheat and Stripe Rust Fungus

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Functional Characterization of Wheat Cellulose Synthase TaCE...

中国植物病理学会2023年学术年会

作者： ZHANG Yanqin GUO Shuangyuan YU Longhui LI Min ZHANG Xinmei WANG Xiaojie KANG Zhensheng College of Plant Protection Northwest A&F University College of Life Sciences Northwest A&F University state key laboratory of crop stress Biology for Arid Areas Northwest A&F University

Wheat stripe rust,caused by Puccinia striformis ***(Pst),seriously harms wheat production in *** synthase 7(CESA7) participates in the synthesis process of plant secondary cell walls and plays an important role in plant disease ***,CESA7 has rarely been reported on the interaction between plants and pathogenic bacteria,especially the interaction between wheat and stripe *** this study,a candidate gene TaCESA7 was screened through the cDNA library and transcriptome database(constructed by wheat variety Suwon 11 and stripe rust fungus CYR23(non-affinity) and CYR31(affinity).Real-time quantitative PCR showed that TaCESA7 was mainly induced by CYR31,and virus-inducted gene silencing(VIGS) silences TaCESA7,which reduces the hypha length,infection area and biomass of stripe rust *** results showed that TaCESA7 may negatively regulate the resistance of wheat to stripe *** protoplasts and tobacc subcellular localization showed that TaCESA7 is localized in the cell *** addition,three potential targets that interact with TaCESA7 were screened using yeast two-hybrid technology,and the reliability of the interaction was further verified by bimolecular fluorescence complementation,co-immunoprecipitation and firefly luciferase *** conclusion,this study proved that TaCESA7 negatively regulates wheat resistance to stripe rust,and its regulation mechanism may have a certain relationship with the three interacting *** exploring the possible susceptibility mechanism of wheat TaCESA7 would provide a theoretical basis for the creation of broad-spectrum and durable wheat varieties with resistance to stripe rust.

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Bph6 encodes an exocyst-localized protein and confers broad resistance to planthoppers in rice

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Bph6 encodes an exocyst-localized protein and confers broad ...

2018全国植物生物学大会

作者： Jianping Guo Chunxue Xu Di Wu Yan Zhao Yongfu Qiu Xiaoxiao Wang Yidan Ouyang Baodong Cai Xin Liu Shengli Jing Xinxin Shangguan Huiying Wang Yinhua Ma Liang Hu Yan Wu Shaojie Shi Wenliang Wang Lili Zhu Xun Xu Rongzhi Chen Yuqi Feng Bo Du Guangcun He state key laboratory of Hybrid Rice College of Life SciencesWuhan University National key laboratory of crop Genetic Improvement Huazhong Agricultural University key laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education) College of Chemistry and Molecular SciencesWuhan University Beijing Genomics Institute

The brown planthopper(BPH) and white-backed planthopper(WBPH) are the most destructive insect pests of rice,and theypose serious threats to rice production throughout ***,there are urgent needs to identify resistance-conferring genesand to breed planthopper-resistant rice *** we report the map-based cloning and functional analysis of Bph6,agene that confers resistance to planthoppers in ***6 encodes a previously uncharacterized protein that localizes to exocystsand interacts with the exocyst subunit OsEXO70 ***6 expression increases exocytosis and participates in cell wallmaintenance and reinforcement.A coordinated cytokinin,salicylic acid and jasmonic acid signaling pathway is activated inBph6-carrying plants,which display broad resistance to all tested BPH biotypes and to WBPH without sacrificing yield,as theseplants were found to maintain a high level of performance in a field that was heavily infested with *** results suggest thata superior resistance gene that evolved long ago in a region where planthoppers are found year round could be very valuable forcontrolling agricultural insect pests.

关键词： Planthopper rice Bph6 broad spectrum resistance exocyst phytohormones

Telomere-to-telomere haplotype-resolved reference genome reveals subgenome divergence and disease resistance in triploid Cavendish banana

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Horticulture Research 2023年第9期10卷 85-97页

作者： Hui-Run Huang Xin Liu Rida Arshad Xu Wang Wei-Ming Li Yongfeng Zhou Xue-Jun Ge key laboratory of Plant Resources Conservation and Sustainable Utilization South China Botanical GardenChinese Academy of SciencesGuangzhou 510650China South China National Botanical Garden Guangzhou 510650China University of Chinese Academy of Sciences Beijing 100049China state key laboratory of Tropical crop Breeding Shenzhen BranchGuangdong Laboratory of Lingnan Modern AgricultureKey Laboratory of Synthetic BiologyMinistry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China School of Marine Sciences and Biotechnology Guangxi University for NationalitiesNanning 530008China state key laboratory of Tropical crop Breeding Tropical Crops Genetic Resources InstituteChinese Academy of Tropical Agricultural SciencesHaikou 571101China

Banana is one of the most important crops of the ***-type bananas,which have a monospecific Musa acuminata origin(AAA),account for around half of the global banana production,thereby are of great significance for human ***,until now,the high-quality haplotype-resolved reference genome was still undecoded for banana ***,we reported the telomere-to-telomere(T2T)and haplotype-resolved reference genome of‘Baxijiao’(Cavendish)consisting of three haploid *** sizes of the three haploid assemblies were estimated to be 477.16 Mb,477.18 Mb,and 469.57 Mb,*** with monospecific origins,the three haploid assemblies showed great differences with low levels of sequence *** large reciprocal translocations were identified among chromosomes 1,4,and *** expansion of gene families that might affect fruit quality and aroma was detected,such as those belonging to sucrose/disaccharide/oligosaccharide catabolic processes,sucrose metabolic process,starch metabolic process,and aromatic compound biosynthetic ***,an expansion of gene families related to anther and pollen development was observed,which could be associated with parthenocarpy and sterility of the Cavendish ***,much fewer resistance genes were identified in‘Baxijiao’than in ***,particularly in the gene clusters in chromosomes 3 and 10,providing potential targets to explore for molecular analysis of disease resistance in *** T2T haplotype-resolved reference genome will thus be a valuable genetic resource for biological studies,molecular breeding,and genetic improvement of banana.

关键词： cultivar breeding crops

A transposable element-derived gene TaS410 at Fhb1 region was associated with Fusarium head blight susceptibility in wheat

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A transposable element-derived gene TaS410 at Fhb1 region wa...

中国植物病理学会第十二届青年学术研讨会

作者： Tao Li Lei Li Fei Zheng Aili Li Guihua Bai Aiai Li Di Wu Long Mao Jiangsu Provincial key laboratory of crop Genetics and Physiology/Co-Innovation Center for Modern production Technology of Grain crops National key Facility for crop Gene Resources and Genetic Improvement Institute of Crop ScienceChinese Academy of Agricultural Sciences Department of Agronomy Kansas State University USDA-ARS Hard Winter Wheat Genetics Research Unit

Fusarium head blight（FHB）,incited by Fusarium graminearum（Fg）,causes significant yield losses and quality deterioration in *** to the complexity of wheat genome and complicated nature of Fg-host interactions,the wheat genes regulating interactions with FHB responses remain largely *** is the most important QTL associated with FHB resistance in *** the current paper,sequencing of RNA from NIL75（FHB resistant） and NIL98（FHB susceptible）,two near isogenic lines（NILs） contrasting in Fhbl alleles,identified one transcript that was differentially expressed only in NIL98,not in NIL75,and this transcript belongs to the unigene 29451（temporarily designated as TaS410） that locates within Fhb1 region between markers Xsts189 and Xstsli2 on ctg0954 b of reference sequences and encodes a protein with a domain of unknown function（DUF659） and an hAT（activator superfamily） dimerisation *** analysis suggests that TaS410 in wheat had the closest phylogenetic relationship with the ortholog in sorghum,and may horizontally transferred from fungus during microbe-plant *** expression of TaSi10 in NIL98 was spatially and temporally heterogenous,and was upregulated after Fg challenge due to the presences of cis-elements responsive to pathogen challenge at the promoter region of *** expression of TaS410 is also detected in wellknown FHB susceptible varieties including Wheaton,Jagger,Bobwhite,and Clark,but is silenced in a panel of Fhb1-containing varieties including Ning7840,Wangshuibai,Huangfangzhu,Baisanyuehuang and Taiwan *** NIL75,a nucleotide deletion on exon 4 of TaS410 resulted in a prematured termination of the transcription and gene *** results imply that expression of TaS410 results in increased FHB susceptibility whereas silence of this gene may lead to increased resistance in ***410-specific marker developed here could be used to assist in removal of the susceptible gene/allele to improve FHB resistance

关键词： wheat FHB susceptible gene Fhbl locus RNA-seq

Fusarium head blight resistance loci in a stratified population of wheat landraces and varieties

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Fusarium head blight resistance loci in a stratified populat...

中国植物病理学会第十二届青年学术研讨会

作者： Tao Li Dadong Zhang Xiali Zhou Guihua Bai Lei Li Shiliang Gu Jiangsu Provincial key laboratory of crop Genetics and Physiology/Co-Innovation Center for Modern production Technology of Grain crops Department of Agronomy Kansas State University USDA-ARS Hard Winter Wheat Genetics Research Unit

To determine if Chinese and Japanese wheat landraces and varieties have unique sources of Fusarium head blight（FHB） resistance,an association mapping panel of 195 wheat accessions including both commercial varieties and landraces was genotyped with 364 genome-wide simple sequence repeat（SSR） and sequence-tagged site（STS） markers,and evaluated for type Ⅱ FHB resistance in three greenhouse experiments using single floret *** structure analysis stratified this population into five groups with Chinese landraces in four ***-two of 51 Chinese landraces and 24 of 27 Japanese accessions were placed in one *** analysis using a mixed model identified 11 markers having significant associations with FHB resistance in at least two *** of these markers coincided with known quantitative trait loci（QTL） for FHB resistance with one potentially novel QTL associated with Xgdm138-5DS and ***19-3AS was significant in all three experiments,and the frequency of favorable alleles was more than53%.Chinese landraces and Japanese accessions had more favorable alleles at the majority of reproducible marker *** QTL combinations were identified according to the number of favorable *** FHB severities increased with decreasing numbers of favorable alleles at reproducible *** resistance loci characterized here will further diversify the wheat FHB resistance gene pool,and provide breeders with additional sources of resistance for improvement of FHB resistance in wheat.

关键词： allelic variation association analysis Fusarium graminearum Triticum aestivum wheat scab

ROLE OF NITROGEN SENSING AND ITS INTEGRATIVE SIGNALING PATHWAYS IN SHAPING ROOT SYSTEM ARCHITECTURE

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Frontiers of Agricultural Science and Engineering 2022年第3期9卷 316-332页

作者： Hui LIU Qian LIU Xiuhua GAO Xiangdong FU state key laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China College of Life Sciences University of Chinese Academy of SciencesBeijing 100049China.

The Green Revolution of the 1960s boosted crop yields in part through widespread production of semidwarf plant cultivars and extensive use of mineral *** beneficial semidwarfism of cereal Green Revolution cultivars is due to the accumulation of plant growth-repressing DELLA proteins,which increases lodging resistance but requires a high-nitrogen fertilizer to obtain high *** that environmentally degrading fertilizer use underpins current worldwide crop production,future agricultural sustainability needs a sustainable Green Revolution through reducing N fertilizer use while boosting grain yield above what is currently *** a great deal of research efforts,only a few genes have been demonstrated to improve N-use efficiency in *** molecular mechanisms underlying the coordination between plant growth and N metabolism is still not fully understood,thus preventing significant *** advances of how plants sense,capture and respond to varying N supply in model plants have shed light on how to improve sustainable productivity in *** review focuses on the current understanding of root developmental and metabolic adaptations to N availability,and discuss the potential approaches to improve N-use efficiency in high-yielding cereal crops.

关键词： nitrogen root system architecture,phytohormone crosstalk nitrogen-use efficiency,breeding strategy