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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

The receptor-like cytoplasmic kinase RIPK regulates broad-spectrum ROS signaling in multiple layers of plant immune system

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Molecular Plant 2021年第10期14卷 1652-1667页

作者： Ping Li Lulu Zhao Fan Qi Nang Myint Phyu Sin Htwe Qiuying Li Dawei Zhang Fucheng Lin Keke Shang-Guan Yan Liang Ministry of Agriculture key Lab of Molecular Biology of crop Pathogens and Insects Institute of BiotechnologyZhejiang UniversityHangzhou 310058China state key laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Hangzhou 310058China

production of reactive oxygen species(ROS)via the activity of respiratory burst oxidase homologs(RBOHs)plays a vital role in multiple layers of the plant immune system,including pathogen-associated molecular pattern-triggered immunity(PTI),damage-associated molecular pattern-triggered immunity(DTI),effector-triggered immunity(ETI),and systemic acquired resistance(SAR).It is generally established that RBOHD is activated by different receptor-like cytoplasmic kinases(RLCKs)in response to various immune *** this study,we showed that RPM1-INDUCED PROTEIN KINASE(RIPK),an RLCK VII subfamily member,contributes to ROS production in multiple layers of plant immune *** ripk mutants showed reduced ROS production in response to treatment with all examined immune elicitors that trigger PTI,DTI,ETI,and *** found that RIPK can directly phosphorylate the N-terminal region of RBOHD in vitro,and the levels of phosphorylated S343/S347 residues of RBOHD are sigfniciantly lower in ripk mutants compared with the wild type upon treatment with all tested immune *** further demonstrated that phosphorylation of RIPK is required for its function in regulating RBOHD-mediated ROS *** to rbohd,ripk mutants showed reduced stomatal closure and impaired SAR,and were susceptible to the necrotrophic bacterium Pectobacterium ***,our results indicate that RIPK regulates broad-spectrum RBOHD-mediated ROS signaling during PTI,DTI,ETI,and SAR,leading to subsequent RBOHD-dependent immune responses.

关键词： reactive oxygen species RIPK RBOHD plant immunity receptor-like cytoplasmic kinase NADPH oxidase

MdDREB2A in apple is involved in the regulation of multiple abiotic stress responses

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Horticultural Plant Journal 2021年第3期7卷 197-208页

作者： Xinyu Lian Xinyu Zhao Qiang Zhao Guiluan Wang Yuanyuan Li Yujin Hao state key laboratory of crop Biology Shandong Collaborative Innovation Center of Fruit&Vegetable Quality and Efficient ProductionCollege of Horticulture Science and EngineeringShandong Agricultural UniversityTai’anShandong 271018China College of Horticulture Qingdao Agricultural UniversityQingdaoShandong 266109China

Abiotic stress has a serious effect on plant *** transcription factor DREB2A is a member of the AP2/ERF family,which is widely involved in abiotic stress ***,the function of apple MdDREB2A has not been systematically *** this study,MdDREB2A was isolated from the cultivar‘Royal Gala’.The open reading frame of MdDREB2A was 1197 bp in length and it encoded a protein of 398 amino acidswithmolecularweight of 43.8 *** a transcription factor,MdDREB2Awas located in the ***-PCR analysis showed that MdDREB2A was involved in responses to drought,salt,and ABA *** these stress treatments,the relative electrical conductivity,superoxide anion and malondialdehyde(MDA)in transgenic materials significantly decreased,and the content of proline increased in MdDREB2A transgenic plants,compared to the controls,indicating that MdDREB2A transgenic apple calli and transgenic Arabidopsis exhibited improved resistance to abiotic *** study introduces a candidate gene for the genetic improvement of crop resistance and reveals important function of MdDREB2A in the regulation of abiotic stress response.

关键词： apple MdDREB2A Function Abiotic stress

A virus-derived siRNA activates plant immunity by interfering with ROS scavenging

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Molecular Plant 2021年第7期14卷 1088-1103页

作者： Peng Liu Xiaoxiang Zhang Fan Zhang Miaoze Xu Zhuangxin Ye Ke Wang Shuang Liu Xiaolei Han Ye Cheng Kaili Zhong Tianye Zhang Linzhi Li Youzhi Ma Ming Chen Jianping Chen Jian Yang state key laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agroproducts Key Laboratory of Biotechnology in Plant Protection of MOA of China and Institute of Plant VirologyNingbo UniversityNingbo 315211China lnstitute of Agricultural Sciences in Lixiahe District of Jiangsu Province YangzhouJiangsu 225007China Yantai Academy of Agricultural Science Shandong ProvinceNo.26 Gangcheng West StreetFushan DistrictYantai CityShandong 265500P.R.China National key Facility for crop Genetic Resources and Genetic Improvement Key Laboratory of Crop Genetics and BreedingMinistry of AgricultureInstitute of Crop ScienceChinese Academy of Agricultural SciencesBeijingChina

Virus-derived small interference RNAs(vsiRNAs)not only suppress virus infection in plants via induction of RNA silencing but also enhance virus infection by regulating host defensive gene ***,the underlying mechanisms that control vsiRNA-mediated host immunity or susceptibility remain largely *** this study,we generated several transgenic wheat lines using four artificial microRNA expression vectors carrying vsiRNAs from Wheat yellow mosaic virus(WYMV)*** and field tests showed that two transgenic wheat lines expressing amiRNAI were highly resistant to WYMV *** analyses showed that vsiRNAI could modulate the expression of a wheat thioredoxin-like gene(TaAAEDI),which encodes a negative regulator of reactive oxygen species(ROS)production in the *** function of TaAAEDI in ROS scavenging could be suppressed by vsiRNAI in a dose-dependent ***,transgenic expression of amiRNAI in wheat resulted in broad-spectrum disease resistance to Chinese wheat mosaic virus,Barley stripe mosaic virus,and Puccinia striiformis *** infection,suggesting that vsiRNAI is involved in wheat immunity via ROS ***,these findings reveal a previously unidentified mechanism underlying the arms race between viruses and plants.

关键词： vsiRNAI Wheat yellow mosaic virus TaAAEDI ROS host resistance

key indicators affecting maize stalk lodging resistance of different growth periods under different sowing dates

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Journal of Integrative Agriculture 2020年第10期19卷 2419-2428页

作者： WANG Qun XUE Jun CHEN Jiang-lu FAN Ying-hu ZHANG Guo-qiang XIE Rui-zhi MING Bo HOU Peng WANG Ke-ru LI Shao-kun key laboratory of Oasis Eco-Agriculture Xinjiang Production and Construction Corps/agricutura1 CollegeShihezi UniversityShihezi 832000P.R.China Institute of crop Sciences Chinese Academy of Agricultural Sciences/Key Laboratory of Crop Physiology and EcologyMinistry of Agriculture and Rural AffairsBejjing 100081P.R.China Research Institute of Agricultural Sciences Sixth Division of Xinjiang Production and Construction CorpsWujiaqu 831300P.R.China Chuxiong state Research and Extension Institute of Agricultural Science Chuxiong 675000P.R.China

The accurate evaluation of maize stalk lodging resistance in different growth periods enables timely management of lodging risks and ensures stable and high maize ***,we established five diferent sowing dates to create diferent conditions for maize *** evaluated the effects of the different growth conditions on lodging resistance by determining stalk morphology,moisture content,mechanical strength and dry matter,and the relationship between stalk breaking force and these indicators during the silking stage(R1),milk stage(R3),physiological maturity stage(R6),and 20 days after *** height at R1 positively affected stalk breaking *** R3,the cofficient of ear height and the dry weight per unit length of basal internodes were key indicators of stalk lodging *** R6,the key indicators were the coefficient of the center of gravity height and plant fresh *** R6,the key indicator was the coefficient of the center of gravity *** crushing strength of the fourth internode correlated significanty and positively with the stalk breaking force from R1 to R6,which indicates that crushing strength is a reliable indicator of stalk mechanical *** results suggest that high stalk strength and low ear height beneft lodging resistance prior to *** and after R6,the cofficient of the center of gravity height and the mechanical strength of basal internodes can be used to evaluate plant lodging resistance and the appropriate time for harvesting in fields with a high lodging risk.

关键词： maize lodging resistance stalk strength growth periods breaking force

Molecular Basis of Disease resistance and Perspectives on Breeding Strategies for resistance Improvement in crops

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Molecular Plant 2020年第10期13卷 1402-1419页

作者： Yiwen Deng Yuese Ning Dong-Lei Yang Keran Zhai Guo-Liang Wang Zuhua He National key laboratory of Plant Molecular Genetics CAS Center for Excellence in Molecular Plant Sciences/Shanghai Institute of Plant Physiology&EcologyChinese Academy of SciencesShanghai 200032China state key laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China state key laboratory of crop Genetics and Germplasm Enhancement Nanjing Agricultural UniversityNanjing 210095China Department of Plant Pathology Ohio State UniversityColumbusOH 43210USA

crop diseases are major factors responsible for substantial yield losses worldwide,which affects global food *** use of resistance(R)genes is an effective and sustainable approach to controlling crop ***,we review recent advances on R gene studies in the major crops and related wild *** understanding of the molecular mechanisms underlying R gene activation and signaling,and susceptibility(S)gene-mediated resistance in crops are summarized and ***,we propose some new strategies for R gene discovery,how to balance resistance and yield,and how to generate crops with broad-spectrum disease *** the rapid development of new genome-editing technologies and the availability of increasing crop genome sequences,the goal of breeding next-generation crops with durable resistance to pathogens is achievable,and will be a key step toward increasing crop production in a sustainable way.

关键词： resistance gene resistance improvement molecular basis of disease resistance crop immunity

Development and identification of Verticillium wilt-resistant upland cotton accessions by pyramiding QTL related to resistance

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Journal of Integrative Agriculture 2016年第3期15卷 512-520页

作者： GUO Xiu-hua CAI Cai-ping YUAN Dong-dong ZHANG Ren-shan XI Jing-long GUO Wang-zhen state key laboratory of crop Genetics & Germplasm Enhancement Ministry of Science and TechnologyHybrid Cotton R&D Engineering Research Center Ministry of EducationCollege of Agriculture Nanjing Agricultural University

Cotton Verticillium wilt is a serious soil-borne disease that leads to significant losses in fiber yield and quality worldwide. Currently, the most effective way to increase Verticillium wilt resistance is to develop new resistant cotton varieties. Lines 5026 and 60182 are two Verticillium wilt-resistant upland cotton accessions. We previously identified a total of 25 quantitative trait loci（QTLs） related to Verticillium wilt resistance from 5026 and 60182 by assembling segregating populations from hybridization with susceptible parents. In the current study, using 13 microsatellite markers flanking QTLs related to Verticillium wilt resistance, we developed 155 cotton inbred lines by pyramiding different QTLs related to Verticillium wilt resistance from a filial generation produced by crossing 5026 and 60182. By examining each allele＇s effect and performing multiple comparison analysis, we detected four elite QTLs/alleles（q-5/NAU905-2, q-6/NAU2754-2, q-8/NAU3053-1 and q-13/NAU6598-1） significant for Verticillium wilt resistance, pyramiding these elite alleles increased the disease resistance of inbred lines. Furthermore, we selected 34 elite inbred lines, including five lines simultaneously performing elite fiber quality, high yield and resistance to V. dahliae, 14 lines with elite fiber quality and disease resistance, three lines with high yield and disease resistance, and 12 lines with resistance to V. dahliae. No correlation between Verticillium wilt resistance and fiber quality traits/yield and its components was detected in the 155 developed inbred lines. Our results provide candidate markers for disease resistance for use in marker-assisted breeding（MAS）, as well as elite germplasms for improving important agronomic traits via modern cotton breeding.

关键词： upland cotton Verticillium wilt-resistance pyramiding QTL germplasm enhancement

Characterization of a PDR type ABC transporter gene from wheat (Triticum aestivum L.)

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Chinese Science Bulletin 2009年第18期54卷 3249-3257页

作者： SHANG Yi XIAO Jin MA LuLin WANG HaiYan QI ZengJun CHEN PeiDu LIU DaJun WANG XiuE state key laboratory of crop Genetics and Germplasm Enhancement Cytogenetics Institute Nanjing Agricultural UniversityNanjing 210095 China Institute of crop Research and Nuclear Technique Utilization Zhejiang Academy of Agricultural Science Hangzhou 310021 China

DON, as a virulence factor, plays an important role in the infection of Fusarium graminearum in wheat. The infection ability of F. graminearum depends on its capacity of producing DON. The production of DON by F. graminearum is significantly decreased in the wheat varieties with scab resistance. In this study, GeneChip analysis indicated that an EST encoding an ATP-binding cassette (ABC) transporter was up-regulated by 45 times in a wheat landrace Wangshuibai, which is resistant to DON accumulation. A pair of EST-derived primers were designed based on the EST sequence, and a clone was then isolated from a wheat genomic DNA TAC library. The TAC clone was sequenced using chromosome walking and gene prediction was conducted using Softberry. A cDNA clone of this gene was subsequently isolated from Wangshuibai induced by DON using gene-specific primers designed according to the untranslated sequence of the gene. The genome size of the gene is 7377 bp, consisting of 19 exons with coding sequences of 4308 bp. It encodes a protein with 1435 amino acid residues and the calculated molecular weight is about 161 kD. BLAST analysis indicated that the gene may belong to pleiotropic drug resistance (PDR) sub-family, and hence designated as TaPDR1 (Triticum aestivum pleiotropic drug resistance). TaPDR1 was located on chromosome 5A of wheat using nullisomic-tetrasomic lines of Chinese Spring. TaPDR1 was up-regulated by induction of both DON and F. graminearum. Expression patterns of TaPDR1 were different in wild-type Wangshuibai and the fast-neutron induced Wangshuibai mutant lacking FHB1, a major QTL of FHB resistance and DON resistance in chromosome arm 3BS. These results suggested that TaPDR1 might be a candidate gene responsible for DON ac-cumulation resistance. The expression profile showed that TaPDR1 expression was neither induced by hormones typically involved in biotic stress, such as JA and SA, nor by abiotic stresses, such as heat, cold, wounding and NaCl. However, TaPDR1

关键词：小麦多样性 PDR ABC

Competition between anthocyanin and kaempferol glycosides biosynthesis affects pollen tube growth and seed set of Malus

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Horticulture Research 2021年第1期8卷 2439-2455页

作者： Weifeng Chen Zhengcao Xiao Yule Wang Jinxiao Wang Rui Zhai Kui Lin-Wang Richard Espley Fengwang Ma Pengmin Li state key laboratory of crop stress Biology for Arid Areas/shaanxi key laboratory of apple College of HorticultureNorthwest A&F UniversityYanglingShaanxi 712100China College of Food Science and Technology Northwest UniversityXi'anShaanxi 710069China The New Zealand Institute for Plant and Food Research Ltd Private Bag92169 AucklandNew Zealand

Flavonoids play important roles in regulating plant growth and *** this study,three kaempferol 3-O-glycosides were identi fi ed and mainly accumulated in fl owers but not in leaves or fruits of *** Malus,fl ower petal color is normally white,but some genotypes have red fl owers containing *** biosynthesis appears to be in competition with kaempferol 3-O-glycosides production and controlled by the biosynthetic *** white fl ower Malus genotypes had better-developed seeds than the red fl ower *** fl owers,the overexpression of MYB10 in Malus domestica enhanced the accumulation of anthocyanin,but decreased that of kaempferol *** pollination the transgenic plants showed slower pollen tube growth and fewer developed *** application ofdifferent fl avonoid compounds suggested that kaempferol 3-O-glycosides,especially kaempferol 3-O-rhamnoside,regulated pollen tube growth and seed set rather than cyanidin or quercetin *** was found that kaempferol 3-O-rhamnoside might regulate pollen tube growth through effects on auxin,the Rho of plants(ROP)GTPases,calcium and the phosphoinositides signaling *** the inhibition of auxin transport,the transcription levels of Heat Shock Proteins(HSPs)and ROP GTPases were downregulated while the levels were not changed or even enhanced when blocking calcium signaling,suggesting that HSPs and ROP GTPases were downstream of auxin signaling,but upstream of calcium *** summary,kaempferol glycoside concentrations in pistils correlated with auxin transport,the transcription of HSPs and ROP GTPases,and calcium signaling in pollen tubes,culminating in changes to pollen tube growth and seed set.

关键词： kaempferol slower upstream