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Genome-wide analysis of NDR1/HIN1-like genes in pepper(Capsicum annuum L.)and functional characterization of CaNHL4 under biotic and abiotic stresses

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Horticulture Research 2020年第1期7卷 1611-1625页

作者： Changyun Liu Haoran Peng Xinyu Li Chaolong Liu Xing Lv Xuefeng Wei Aihong Zou Jian Zhang Guangjin Fan Guanhua Ma Lisong Ma Xianchao Sun laboratory of plant immunity and ecological control of plant disease College of Plant ProtectionSouthwest University400716 ChongqingChina Department of Botany and plant Biology Section of BiologyFaculty of ScienceUniversity of Geneva1211 Geneva 4Switzerland State Key laboratory of North China Crop Improvement and Regulation College of Plant ProtectionHebei Agricultural University071001 BaodingChina

plant NDR1/HIN1-like(NHL)genes play an important role in triggering plant defenses in response to biotic *** this study,we performed a genome-wide identification of the NHL genes in pepper(Capsicum annuum L.)and characterized the functional roles of these CaNHL genes in response to abiotic stresses and infection by different *** analysis revealed that CaNHLs can be classified into five distinct subgroups,with each group containing generic and specific *** element analysis showed that the majority of the promoter regions of the identified CaNHLs contain jasmonic acid(JA)-responsive and salicylic acid(SA)-responsive elements,and transcriptomic analysis revealed that CaNHL genes are expressed in all the examined tissues of *** CaNHL1,CaNHL4,CaNHL6,CaNHL10,CaNHL11,and CaNHL12 genes were significantly upregulated under abiotic stress as well as in response to different pathogens,such as TMV,Phytophthora capsici and Pseudomonas *** addition,we found that CaNHL4 localizes to the plasma ***4-silenced pepper plants display significantly increased susceptibility to TMV,Phytophthora capsici and Pseudomonas syringae,exhibiting reduced expression of JA-related and SA-related genes and reduced ROS ***,transient overexpression of CaNHL4 in pepper increases the expression of JArelated and SA-related genes,enhances the accumulation of ROS,and inhibits the infection of these three ***,for the first time,we identified the NHL genes in pepper and demonstrated that CaNHL4 is involved in the production of ROS and that it also regulates the expression of JA-related and SA-related genes in response to different pathogens,suggesting that members of the CaNHL family play an essential role in the disease resistance of pepper.

关键词： pepper analysis functional

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Mechanism of plant immune activation and signaling: Insight from the first solved plant resistosome structure

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Journal of Integrative plant Biology 2019年第8期61卷 902-907页

作者： Baomin Feng Dingzhong Tang State Key laboratory of ecological control of Fujian-Taiwan Crop Pests Key Laboratory of Ministry of Education for Genetics Breeding and Multiple Utilization of Crops Plant Immunity Center Fujian Agriculture and Forestry University

Life or death?It’s a question animal and plant cells ask themselves during development and throughout their lives–and when they choose the latter option,cells can execute a genetically programmed set of cellular functions that result in cell *** animals and plants,the execution of programmed cell death is critical for proper development and for immunity against invading microbes.

关键词： genetically invading microbes

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Microbe-derived non-necrotic glycoside hydrolase family 12 proteins act as immunogenic signatures triggering plant defenses

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Journal of Integrative plant Biology 2022年第10期64卷 1966-1978页

作者： Lan Wang Hanmei Liu Mingmei Zhang Yu Ye Lei Wang Jinyi Zhu Zhaodan Chen Xiaobo Zheng Yan Wang Yuanchao Wang Department of plant Pathology Nanjing Agricultural UniversityNanjing 210095China Key laboratory of Soybean disease and Pest control(Ministry of Agriculture and Rural Affairs) Nanjing Agricultural University210095NanjingChina The Key laboratory of plant immunity Nanjing Agricultural UniversityNanjing 210095China

plant pattern recognition receptors(PRRs)are sentinels at the cell surface sensing microbial invasion and activating innate immune *** infection,certain microbial apoplastic effectors can be recognized by plant PRRs,culminating in immune responses accompanied by cell ***,the intricated relationships between the activation of immune responses and cell death are ***,we studied the glycoside hydrolase family12(GH12)protein,Ps109281,secreted by Phytophthora sojae into the plant apoplast during ***109281 exhibits xyloglucanase activity,and promotes *** infection in a manner dependent on the enzyme ***109281 is recognized by the membranelocalized receptor-like protein RXEG1 and triggers immune responses in various plant *** other characterized GH12 members,Ps109281 fails to trigger cell death in *** loss of cell death induction activity is closely linked to a sequence polymorphism at the *** sequence polymorphism does not affect the in planta interaction of Ps109281 with the recognition receptor RXEG1,indicating that cell death and immune response activation are determined using different regions of the GH12 *** GH12 protein also exists in other Phytophthora and fungal *** together,these results unravel the evolution of effector sequences underpinning different immune outputs.

关键词： apoplastic effector cell death glycoside hydrolases immune recognition immune responses

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plant immune signaling: Advancing on two frontiers

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Journal of Integrative plant Biology 2020年第1期62卷 2-24页

作者： Wei Wang Baomin Feng Jian-Min Zhou Dingzhong Tang State Key laboratory of ecological control of Fujian-Taiwan Crop Pests Key Laboratory of Ministry of Education for GeneticsBreeding and Multiple Utilization of CropsPlant Immunity CenterFujian Agriculture and Forestry UniversityFuzhou 350002China The State Key laboratory of plant Genomics Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China

plants have evolved multiple defense strategies to cope with pathogens, among which plant immune signaling that relies on cell-surface localized and intracellular receptors takes fundamental roles. Exciting breakthroughs were made recently on the signaling mechanisms of pattern recognition receptors(PRRs) and intracellular nucleotide-binding site(NBS) and leucine-rich repeat(LRR)domain receptors(NLRs). This review summarizes the current view of PRRs activation, emphasizing the most recent discoveries about PRRs’ dynamic regulation and signaling mechanisms directly leading to downstream molecular events including mitogen-activated protein kinase(MAPK) activation and calcium(Ca2+) burst. plants also have evolved intracellular NLRs to perceive the presence of specific pathogen effectors and trigger more robust immune responses. We also discuss the current understanding of the mechanisms of NLR activation, which has been greatly advanced by recent breakthroughs including structures of the first full-length plant NLR complex, findings of NLR sensor-helper pairs and novel biochemical activity of Toll/interleukin-1 receptor(TIR) domain.

关键词： breakthrough activation frontier

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Application of vetiver grass Vetiveria zizanioides: Poaceae(L.) as a trap plant for rice stem borer Chilo suppressalis: Crambidae(Walker) in the paddy fields

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Journal of Integrative Agriculture 2019年第4期18卷 797-804页

作者： LU Yan-hui ZHENG Xu-song LU Zhong-xian State Key laboratory Breeding Base for Zhejiang Sustainable Pest and disease control Institute of Plant Protection and Microbiology Zhejiang Academy of Agricultural Sciences

Rice is an important staple food in China and it is at risk of attack by rice striped stem borer Chilo suppressalis, which occurs in most rice growing areas. In recent years, severe C. suppressalis outbreaks have been observed in China mainly due to changes in the rice cultivation systems, wide adoption of hybrid varieties and resistance to the dominant insecticides. Management relies primarily on chemical insecticides and resistance is an important contributing factor in these outbreaks. As a result, food safety of agricultural produce is reduced and the ecological and environmental integrities are threatened as well. Recently, environmentally friendly pest management measures, such as trap plants have been introduced for C. suppressalis management and this method can greatly reduce insecticide use. Our previous results indicated that the vetiver grass(Vetiveria zizanioides) is a dead-end trap plant that can effectively attract the adult females of C. suppressalis to lay eggs on it but where larvae are unable to complete their life cycle. This paper further explored the application of vetiver grass as a trap plant to manage C. suppressalis in the paddy fields. This environment-friendly tool can not only reduce C. suppressalis populations, it can also increase the diversity and abundance of natural enemies that can provide better environmental conditions for rice production.

关键词： rice vetiver trap plants Chilo suppressalis control application

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Fusarium-produced vitamin B6 promotes the evasion of soybean resistance by Phytophthora sojae

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Journal of Integrative plant Biology 2023年第9期65卷 2204-2217页

作者： Shuchen Wang Xiaoyi Zhang Zhichao Zhang Yun Chen Qing Tian Dandan Zeng Miao Xu Yan Wang Suomeng Dong Zhonghua Ma Yuanchao Wang Xiaobo Zheng Wenwu Ye Department of plant Pathology Nanjing Agricultural UniversityNanjing 210095China Key laboratory of plant immunity Nanjing Agricultural UniversityNanjing 210095China Key laboratory of Soybean disease and Pest control(Ministry of Agriculture and Rural Affairs) Nanjing Agricultural UniversityNanjing 210095China Key laboratory of Molecular Biology of Crop Pathogens and Insects Institute of BiotechnologyZhejiang UniversityHangzhou 310058China

plants can be infected by multiple pathogens concurrently in natural systems. However,pathogen–pathogen interactions have rarely been studied. In addition to the oomycete Phytophthora sojae, fungi such as Fusarium spp. also cause soybean root rot. In a 3-year field investigation, we discovered that P. sojae and Fusarium spp. frequently coexisted in diseased soybean roots. Out of 336 P. sojae–soybean–Fusarium combinations,more than 80% aggravated disease. Different Fusarium species all enhanced P. sojae infection when co-inoculated on soybean. Treatment with Fusarium secreted non-proteinaceous metabolites had an effect equal to the direct pathogen coinoculation. By screening a Fusarium graminearum mutant library, we identified Fusarium promoting factor of Phytophthora sojae infection 1(Fpp1),encoding a zinc alcohol dehydrogenase. Fpp1 is functionally conserved in Fusarium and contributes to metabolite-mediated infection promotion, in which vitamin B6(VB6) produced by Fusarium is key. Transcriptional and functional analyses revealed that Fpp1 regulates two VB6 metabolism genes, and VB6 suppresses expression of soybean disease resistance-related genes. These results reveal that co-infection with Fusarium promotes loss of P. sojae resistance in soybean, information that will inform the sustainable use of diseaseresistant crop varieties and provide new strategies to control soybean root rot.

关键词： fungal metabolites pathogen–host interaction Phytophthora sojae soybean root rot vitamin B6

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Crop antiviral defense: Past and future perspective

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Science China Life Sciences 2024年第12期67卷 2617-2634页

作者： Zhirui Yang Guangyao Li Yongliang Zhang Fangfang Li Tao Zhou Jian Ye Xianbing Wang Xiaoming Zhang Zongtao Sun Xiaorong Tao Ming Wu Jianguo Wu Yi Li The State Key laboratory of Protein and plant Gene Research School of Life Sciences Peking University State Key laboratory of plant Environmental Resilience Frontiers Science Center for Molecular Design Breeding College of Biological Sciences China Agricultural University State Key laboratory for ecological Pest control of Fujian and Taiwan Crops Vector-borne Virus Research Center College of Plant Protection Fujian Agriculture and Forestry University State Key laboratory for Biology of plant diseases and Insect Pests Institute of Plant Protection Chinese Academy of Agricultural Sciences State Key laboratory for Agro-Biotechnology and Department of plant Pathology China Agricultural University State Key laboratory of plant Genomics Institute of Microbiology Chinese Academy of Sciences State Key laboratory of Integrated Management of Pest Insects and Rodents Institute of Zoology Chinese Academy of Sciences CAS Center for Excellence in Biotic Interactions University of Chinese Academy of Sciences State Key laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Key Laboratory of Biotechnology in Plant Protection of MARA and Zhejiang Province Institute of Plant Virology Ningbo University Department of plant Pathology The Key Laboratory of Plant Immunity Nanjing Agricultural University

Viral pathogens not only threaten the health and life of humans and animals but also cause enormous crop yield losses and contribute to global food insecurity. To defend against viral pathogens, plants have evolved an intricate immune system to perceive and cope with such attacks. Although most of the fundamental studies were carried out in model plants, more recent research in crops has provided new insights into the antiviral strategies employed by crop plants. We summarize recent advances in understanding the biological roles of cellular receptors, RNA silencing, RNA decay, hormone signaling, autophagy, and ubiquitination in manipulating crop host-mediated antiviral responses. The potential functions of circular RNAs, the rhizosphere microbiome, and the foliar microbiome of crops in plant-virus interactions will be fascinating research directions in the future. These findings will be beneficial for the development of modern crop improvement strategies.

关键词： crops antiviral defense RNA silencing autophagy ubiquitin proteasome system

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Intercropping of rice varieties increases the eff iciency of blast control through reduced disease occurrence and variability

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Journal of Integrative Agriculture 2016年第4期15卷 795-802页

作者： HAN Guang-yu LANG Jie SUN Yan WANG Yun-yue ZHU You-yong LU Bao-rong The Key laboratory for Agro-biodiversity and Pest control Ministry of EducationCollege of Plant Protection Yunnan Agricultural University Key laboratory for Biodiversity Science and ecological Engineering Ministry of EducationInstitute of Biodiversity Science Fudan University

Creating a crop-heterogeneous system by intraspecific mixtures of different rice varieties can substantially reduce blast diseases. Such variety mixtures provide an ecological approach for effective disease control, maintaining high yields with the minimum fungicide applications. Whether such an approach is universally applicable for random rice variety combinations and what is the variation pattern of the diseases under intercropping still remains unclear. We conducted two-year large-scale field experiments involving 47 rice varieties/lines and 98 variety-combinations to compare the occurrence of rice blast in monoculture and intercropping plots at multiple sites. In the experiments, the plant height of the selected tradi- tional varieties was about 30 cm taller, and their life cycle was 10 days longer, than that of the improved rice varieties. The monoculture included either traditional or modern rice varieties grown in separate plots. The intercropping included both traditional and modern rice varieties planted together in the same plots. Results from the field experiments under natural disease conditions demonstrated significant reduction for rice blast disease in intercropping plots, compared with that in monoculture plots. For traditional varieties, the average blast incidence reduced from -26% in monoculture to -10% in intercropping, and the disease severity reduced from -17 in monoculture to -5 in intercropping. For modern varieties, the average blast incidence reduced from -19% in monoculture to -10% in intercropping, and the severity from -10 in mono- culture to -4 in intercropping. Traditional rice varieties （-72%） had a much greater increase in the efficiency of disease control than modern varieties （-60%）. In addition, substantially lower values of variance in the blast incidence and severity was detected among the variety combinations in intercropping plots than in monoculture plots. Based on these results, we conclude that the intercropping or mixture

关键词： Oryza sativa cropping system disease suppression disease variation mixed-planting pure-planting cropheterogeneity

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Recent advances and emerging trends in antiviral defense networking in rice

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The Crop Journal 2021年第3期9卷 553-563页

作者： Lu Wang Huiting Xie Xiaoyuan Zheng Jiasheng Chen Shuai Zhang Jianguo Wu Vector-borne Virus Research Center Fujian Province Key Laboratory of Plant VirologyState Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsFujian Agriculture and Forestry UniversityFuzhou 350002FujianChina

plants and viruses coexist in the natural ecosystem for extended periods of time,interacting with each other and even coevolving,maintaining a dynamic balance between plant disease resistance and virus *** virus–host interactions,plants often exhibit abnormal growth and ***,plants do not passively withstand virus attacks but have evolved sophisticated and effective defense mechanisms to resist,limit,or undermine virus *** is widely believed that the initial stage of infection features the most intense interactions between the virus and the host and the greatest variety of activated signal transduction *** review describes the most recent findings in rice antiviral research and discusses a variety of rice antiviral molecular mechanisms,including those based on R genes and recessive resistance,RNA silencing,phytohormone signaling,autophagy and WUSmediated antiviral ***,we discuss the challenges and future prospects of breeding rice for enhanced virus resistance.

关键词： Rice antivirus R gene RNA silencing Recessive resistance Hormone

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Targeting of anti-microbial proteins to the hyphal surface amplifies protection of crop plants against Phytophthora pathogens

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Molecular plant 2021年第8期14卷 1391-1403页

作者： Yang Zhou Kun Yang Qiang Yan Xiaodan Wang Ming Cheng Jierui Si Xue Xue Danyu Shen Maofeng Jing Brett M.Tyler Daolong Dou Key laboratory of plant immunity College of Plant ProtectionAcademy for Advanced Interdisciplinary StudiesNanjing Agricultural UniversityNanjing 210095China College of plant Protection China Agricultural UniversityBeijing 100091China Center for Genome Research and Biocomputing and Department of Botany and plant Pathology Oregon State UniversityCorvallisOR 97331USA

Phytophthora pathogens are a persistent threat to the world's commercially important agricultural crops,including potato and *** strategies aim at reducing crop losses rely mostly on disease-resistance breeding and chemical pesticides,which can be frequently overcome by the rapid adaptive evolution of *** crops with intrinsic disease resista nee offer a promising alternative and con tinue to be ***,we explored Phytophthora-derived PI3P(phosphatidylinositol 3-phosphate)as a novel control target,using proteins that bind this lipid to direct secreted anti-microbial peptides and proteins(AMPs)to the surface of Phytophthora *** transgenic Nicotiana benthamiana,soybean,and potato plants,significantly enhanced resistance to different pathogen isolates was achieved by expression of two AMPs(GAFP1 or GAFP3 from the Chinese medicinal herb Gastrodia elata)fused with a PI3P-specific binding domain(FYVE).Using the soybean pathogen *** as an example,we demonstrated that the FYVE domain could boost the activities of GAFPs in multiple independent assays,including those performed in vitro,in vivo,and in *** analysis of *** PI3K1 and PI3K2 genes of this pathogen confirmed that the enhanced activities of the targeted GAFPs were correlated with PI3P levels in the ***,our study provides a new strategy that could be used to confer resistance not only to Phytophthora pathogens in many plants but also potentially to many other kinds of plant pathogens with unique targets.

关键词： Phytophthora PI3P AMPs transgenic plants disease resistance

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