Molecular plant pathology最新文献

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MoAti1 mediates mitophagy by facilitating recruitment of MoAtg8 to promote invasive growth in Magnaporthe oryzae. MoAti1 通过促进 MoAtg8 的招募来介导有丝分裂,从而促进 Magnaporthe oryzae 的侵袭性生长。
IF 4.8 1区 农林科学
Molecular plant pathology Pub Date : 2024-03-01 DOI: 10.1111/mpp.13439
Huanbin Shi, Shuai Meng, Jiehua Qiu, Shuwei Xie, Nan Jiang, Chaoxi Luo, Naweed I Naqvi, Yanjun Kou
{"title":"MoAti1 mediates mitophagy by facilitating recruitment of MoAtg8 to promote invasive growth in Magnaporthe oryzae.","authors":"Huanbin Shi, Shuai Meng, Jiehua Qiu, Shuwei Xie, Nan Jiang, Chaoxi Luo, Naweed I Naqvi, Yanjun Kou","doi":"10.1111/mpp.13439","DOIUrl":"10.1111/mpp.13439","url":null,"abstract":"<p><p>Mitophagy is a selective autophagy for the degradation of damaged or excessive mitochondria to maintain intracellular homeostasis. In Magnaporthe oryzae, a filamentous ascomycetous fungus that causes rice blast, the most devastating disease of rice, mitophagy occurs in the invasive hyphae to promote infection. To date, only a few proteins are known to participate in mitophagy and the mechanisms of mitophagy are largely unknown in pathogenic fungi. Here, by a yeast two-hybrid screen with the core autophagy-related protein MoAtg8 as a bait, we obtained a MoAtg8 interactor MoAti1 (MoAtg8-interacting protein 1). Fluorescent observations and protease digestion analyses revealed that MoAti1 is primarily localized to the peripheral mitochondrial outer membrane and is responsible for recruiting MoAtg8 to mitochondria under mitophagy induction conditions. MoAti1 is specifically required for mitophagy, but not for macroautophagy and pexophagy. Infection assays suggested that MoAti1 is required for mitophagy in invasive hyphae during pathogenesis. Notably, no homologues of MoAti1 were found in rice and human protein databases, indicating that MoAti1 may be used as a potential target to control rice blast. By the host-induced gene silencing (HIGS) strategy, transgenic rice plants targeted to silencing MoATI1 showed enhanced resistance against M. oryzae with unchanged agronomic traits. Our results suggest that MoATI1 is required for mitophagy and pathogenicity in M. oryzae and can be used as a target for reducing rice blast.</p>","PeriodicalId":18763,"journal":{"name":"Molecular plant pathology","volume":"25 3","pages":"e13439"},"PeriodicalIF":4.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10938464/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140120051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Integrated ATAC-seq and RNA-seq data analysis identifies transcription factors related to rice stripe virus infection in Oryza sativa. ATAC-seq和RNA-seq数据综合分析确定了与水稻条纹病毒感染有关的转录因子。
IF 4.9 1区 农林科学
Molecular plant pathology Pub Date : 2024-03-01 DOI: 10.1111/mpp.13446
Miaomiao Li, Jing Li, Yan Zhang, Yushan Zhai, Yi Chen, Lin Lin, Jiejun Peng, Hongying Zheng, Jianping Chen, Fei Yan, Yuwen Lu
{"title":"Integrated ATAC-seq and RNA-seq data analysis identifies transcription factors related to rice stripe virus infection in Oryza sativa.","authors":"Miaomiao Li, Jing Li, Yan Zhang, Yushan Zhai, Yi Chen, Lin Lin, Jiejun Peng, Hongying Zheng, Jianping Chen, Fei Yan, Yuwen Lu","doi":"10.1111/mpp.13446","DOIUrl":"10.1111/mpp.13446","url":null,"abstract":"<p><p>Animal studies have shown that virus infection causes changes in host chromatin accessibility, but little is known about changes in chromatin accessibility of plants infected by viruses and its potential impact. Here, rice infected by rice stripe virus (RSV) was used to investigate virus-induced changes in chromatin accessibility. Our analysis identified a total of 6462 open- and 3587 closed-differentially accessible chromatin regions (DACRs) in rice under RSV infection by ATAC-seq. Additionally, by integrating ATAC-seq and RNA-seq, 349 up-regulated genes in open-DACRs and 126 down-regulated genes in closed-DACRs were identified, of which 34 transcription factors (TFs) were further identified by search of upstream motifs. Transcription levels of eight of these TFs were validated by reverse transcription-PCR. Importantly, four of these TFs (OsWRKY77, OsWRKY28, OsZFP12 and OsERF91) interacted with RSV proteins and are therefore predicted to play important roles in RSV infection. This is the first application of ATAC-seq and RNA-seq techniques to analyse changes in rice chromatin accessibility caused by RSV infection. Integrating ATAC-seq and RNA-seq provides a new approach to select candidate TFs in response to virus infection.</p>","PeriodicalId":18763,"journal":{"name":"Molecular plant pathology","volume":"25 3","pages":"e13446"},"PeriodicalIF":4.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10950023/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140158526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
SreC-dependent adaption to host iron environments regulates the transition of trophic stages and developmental processes of Curvularia lunata. SreC 依赖于对宿主铁环境的适应,它调控着 Curvularia lunata 营养级的过渡和发育过程。
IF 4.9 1区 农林科学
Molecular plant pathology Pub Date : 2024-03-01 DOI: 10.1111/mpp.13444
Jiaying Sun, Jiamei Zhao, Miaomiao Liu, Jiayang Li, Jie Cheng, Wenling Li, Mingyue Yuan, Shuqin Xiao, Chunsheng Xue
{"title":"SreC-dependent adaption to host iron environments regulates the transition of trophic stages and developmental processes of Curvularia lunata.","authors":"Jiaying Sun, Jiamei Zhao, Miaomiao Liu, Jiayang Li, Jie Cheng, Wenling Li, Mingyue Yuan, Shuqin Xiao, Chunsheng Xue","doi":"10.1111/mpp.13444","DOIUrl":"10.1111/mpp.13444","url":null,"abstract":"<p><p>Plant pathogens are challenged by host-derived iron starvation or excess during infection, but the mechanism of plant pathogens rapidly adapting to the dynamic host iron environments to assimilate iron for invasion and colonization remains largely unexplored. Here, we found that the GATA transcription factor SreC in Curvularia lunata is required for virulence and adaption to the host iron excess environment. SreC directly binds to the ATGWGATAW element in an iron-dependent manner to regulate the switch between different iron assimilation pathways, conferring adaption to host iron environments in different trophic stages of C. lunata. SreC also regulates the transition of trophic stages and developmental processes in C. lunata. SreC-dependent adaption to host iron environments is essential to the infectious growth and survival of C. lunata. We also demonstrate that CgSreA (a SreC orthologue) plays a similar role in Colletotrichum graminicola. We conclude that Sre mediates adaption to the host iron environment during infection, and the function is conserved in hemibiotrophic fungi.</p>","PeriodicalId":18763,"journal":{"name":"Molecular plant pathology","volume":"25 3","pages":"e13444"},"PeriodicalIF":4.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10938068/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140120052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Two distinct SNARE complexes mediate vesicle fusion with the plasma membrane to ensure effective development and pathogenesis of Fusarium oxysporum f. sp. cubense. 两种不同的 SNARE 复合物介导囊泡与质膜的融合,以确保 Fusarium oxysporum f. sp. cubense 的有效发育和致病。
IF 4.9 1区 农林科学
Molecular plant pathology Pub Date : 2024-03-01 DOI: 10.1111/mpp.13443
Zhenyu Fang, Qiwen Zhao, Shiyu Yang, Yan Cai, Wenqin Fang, Yakubu Saddeeq Abubakar, Ying Lin, Yingzi Yun, Wenhui Zheng
{"title":"Two distinct SNARE complexes mediate vesicle fusion with the plasma membrane to ensure effective development and pathogenesis of Fusarium oxysporum f. sp. cubense.","authors":"Zhenyu Fang, Qiwen Zhao, Shiyu Yang, Yan Cai, Wenqin Fang, Yakubu Saddeeq Abubakar, Ying Lin, Yingzi Yun, Wenhui Zheng","doi":"10.1111/mpp.13443","DOIUrl":"10.1111/mpp.13443","url":null,"abstract":"<p><p>SNAREs (soluble N-ethylmaleimide-sensitive factor attachment protein receptors) facilitate docking and fusion of vesicles with their target membranes, playing a crucial role in vesicle trafficking and exocytosis. However, the spatial assembly and roles of plasma membrane (PM)-associated SNAREs in phytopathogen development and pathogenicity are not clearly understood. In this study, we analysed the roles and molecular mechanisms of PM-associated SNARE complexes in the banana Fusarium wilt fungus Fusarium oxysporum f. sp. cubense tropical race 4 (FocTR4). Our findings demonstrate that FocSso1 is important for the fungal growth, conidiation, host penetration and colonization. Mechanistically, FocSso1 regulates protein secretion by mediating vesicle docking and fusion with the PM and hyphal apex. Interestingly, a FocSso1-FocSec9-FocSnc1 complex was observed to assemble not only at the fungal PM but also on the growing hyphal apex, facilitating exocytosis. FocSso2, a paralogue of FocSso1, was also found to form a ternary SNARE complex with FocSec9 and FocSnc1, but it mainly localizes to the PM in old hyphae. The functional analysis of this protein demonstrated that it is dispensable for the fungal growth but necessary for host penetration and colonization. The other subunits, FocSec9 and FocSnc1, are involved in the fungal development and facilitate host penetration. Furthermore, FocSso1 and FocSnc1 are functionally interdependent, as loss of FocSso1 leads to mis-sorting and degradation of FocSnc1 in the vacuole and vice versa. Overall, this study provides insight into the formation of two spatially and functionally distinct PM SNARE complexes and their involvement in vesicle exocytosis to regulate development and pathogenicity of FocTR4.</p>","PeriodicalId":18763,"journal":{"name":"Molecular plant pathology","volume":"25 3","pages":"e13443"},"PeriodicalIF":4.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10950013/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140158527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Alternaria diseases on potato and tomato. 马铃薯和西红柿上的交替花叶病。
IF 4.8 1区 农林科学
Molecular plant pathology Pub Date : 2024-03-01 DOI: 10.1111/mpp.13435
Tamara Schmey, Christopher S Tominello-Ramirez, Carolin Brune, Remco Stam
{"title":"Alternaria diseases on potato and tomato.","authors":"Tamara Schmey, Christopher S Tominello-Ramirez, Carolin Brune, Remco Stam","doi":"10.1111/mpp.13435","DOIUrl":"10.1111/mpp.13435","url":null,"abstract":"<p><p>Alternaria spp. cause different diseases in potato and tomato crops. Early blight caused by Alternaria solani and brown spot caused by Alternaria alternata are most common, but the disease complex is far more diverse. We first provide an overview of the Alternaria species infecting the two host plants to alleviate some of the confusion that arises from the taxonomic rearrangements in this fungal genus. Highlighting the diversity of Alternaria fungi on both solanaceous hosts, we review studies investigating the genetic diversity and genomes, before we present recent advances from studies elucidating host-pathogen interactions and fungicide resistances.</p><p><strong>Taxonomy: </strong>Kingdom Fungi, Phylum Ascomycota, Class Dothideomycetes, Order Pleosporales, Family Pleosporaceae, Genus Alternaria.</p><p><strong>Biology and host range: </strong>Alternaria spp. adopt diverse lifestyles. We specifically review Alternaria spp. that cause disease in the two solanaceous crops potato (Solanum tuberosum) and tomato (Solanum lycopersicum). They are necrotrophic pathogens with no known sexual stage, despite some signatures of recombination.</p><p><strong>Disease symptoms: </strong>Symptoms of the early blight/brown spot disease complex include foliar lesions that first present as brown spots, depending on the species with characteristic concentric rings, which eventually lead to severe defoliation and considerable yield loss.</p><p><strong>Control: </strong>Good field hygiene can keep the disease pressure low. Some potato and tomato cultivars show differences in susceptibility, but there are no fully resistant varieties known. Therefore, the main control mechanism is treatment with fungicides.</p>","PeriodicalId":18763,"journal":{"name":"Molecular plant pathology","volume":"25 3","pages":"e13435"},"PeriodicalIF":4.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10933620/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140110663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Knockout of SlDCL2b attenuates the resistance of tomato to potato spindle tuber viroid infection. 敲除 SlDCL2b 可削弱番茄对马铃薯纺锤形块茎病毒感染的抗性。
IF 4.9 1区 农林科学
Molecular plant pathology Pub Date : 2024-03-01 DOI: 10.1111/mpp.13441
Yuhong Zhang, Xiaxia Tian, Huiyuan Xu, Binhui Zhan, Changyong Zhou, Shifang Li, Zhixiang Zhang
{"title":"Knockout of SlDCL2b attenuates the resistance of tomato to potato spindle tuber viroid infection.","authors":"Yuhong Zhang, Xiaxia Tian, Huiyuan Xu, Binhui Zhan, Changyong Zhou, Shifang Li, Zhixiang Zhang","doi":"10.1111/mpp.13441","DOIUrl":"10.1111/mpp.13441","url":null,"abstract":"<p><p>RNA interference, or RNA silencing, is an important defence mechanism against viroid infection in plants. Plants encode multiple DICER-LIKE (DCL) proteins that are key components of the RNA silencing pathway. However, the roles of different DCLs in defence responses against viroid infection remain unclear. Here, we determined the function of tomato DCL2b (SlDCL2b) in defence responses against potato spindle tuber viroid (PSTVd) infection using SlDCL2b loss-of-function tomato mutant plants. Compared with wild-type plants, mutant plants were more susceptible to PSTVd infection, developing more severe symptoms earlier and accumulating higher levels of PSTVd RNAs. Moreover, we verified the feedback mechanism for the regulation of SlDCL2b expression by miR6026. Functional blocking of tomato miR6026, by expressing its target mimics, can enhance resistance to PSTVd infection in tomato plants. These findings deepen the current understanding of RNAi-based resistance against viroid infection and provide a potentially new strategy for viroid control.</p>","PeriodicalId":18763,"journal":{"name":"Molecular plant pathology","volume":"25 3","pages":"e13441"},"PeriodicalIF":4.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10925824/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140094382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Natural variation in the pattern-triggered immunity response in plants: Investigations, implications and applications. 植物中模式触发免疫反应的自然变异:调查、影响和应用。
IF 4.8 1区 农林科学
Molecular plant pathology Pub Date : 2024-03-01 DOI: 10.1111/mpp.13445
Asher Hudson, Alexander Mullens, Sarah Hind, Tiffany Jamann, Peter Balint-Kurti
{"title":"Natural variation in the pattern-triggered immunity response in plants: Investigations, implications and applications.","authors":"Asher Hudson, Alexander Mullens, Sarah Hind, Tiffany Jamann, Peter Balint-Kurti","doi":"10.1111/mpp.13445","DOIUrl":"10.1111/mpp.13445","url":null,"abstract":"<p><p>The pattern-triggered immunity (PTI) response is triggered at the plant cell surface by the recognition of microbe-derived molecules known as microbe- or pathogen-associated molecular patterns or molecules derived from compromised host cells called damage-associated molecular patterns. Membrane-localized receptor proteins, known as pattern recognition receptors, are responsible for this recognition. Although much of the machinery of PTI is conserved, natural variation for the PTI response exists within and across species with respect to the components responsible for pattern recognition, activation of the response, and the strength of the response induced. This review describes what is known about this variation. We discuss how variation in the PTI response can be measured and how this knowledge might be utilized in the control of plant disease and in developing plant varieties with enhanced disease resistance.</p>","PeriodicalId":18763,"journal":{"name":"Molecular plant pathology","volume":"25 3","pages":"e13445"},"PeriodicalIF":4.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10963888/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140288557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Genome-wide association analysis reveals genes controlling an antagonistic effect of biotic and osmotic stress on Arabidopsis thaliana growth. 全基因组关联分析揭示了控制拟南芥生长的生物和渗透胁迫拮抗效应的基因。
IF 4.8 1区 农林科学
Molecular plant pathology Pub Date : 2024-03-01 DOI: 10.1111/mpp.13436
Pingping Huang, Mohamed El-Soda, Katarzyna W Wolinska, Kaige Zhao, Nelson H Davila Olivas, Joop J A van Loon, Marcel Dicke, Mark G M Aarts
{"title":"Genome-wide association analysis reveals genes controlling an antagonistic effect of biotic and osmotic stress on Arabidopsis thaliana growth.","authors":"Pingping Huang, Mohamed El-Soda, Katarzyna W Wolinska, Kaige Zhao, Nelson H Davila Olivas, Joop J A van Loon, Marcel Dicke, Mark G M Aarts","doi":"10.1111/mpp.13436","DOIUrl":"10.1111/mpp.13436","url":null,"abstract":"<p><p>While the response of Arabidopsis thaliana to drought, herbivory or fungal infection has been well-examined, the consequences of exposure to a series of such (a)biotic stresses are not well studied. This work reports on the genetic mechanisms underlying the Arabidopsis response to single osmotic stress, and to combinatorial stress, either fungal infection using Botrytis cinerea or herbivory using Pieris rapae caterpillars followed by an osmotic stress treatment. Several small-effect genetic loci associated with rosette dry weight (DW), rosette water content (WC), and the projected rosette leaf area in response to combinatorial stress were mapped using univariate and multi-environment genome-wide association approaches. A single-nucleotide polymorphism (SNP) associated with DROUGHT-INDUCED 19 (DI19) was identified by both approaches, supporting its potential involvement in the response to combinatorial stress. Several SNPs were found to be in linkage disequilibrium with known stress-responsive genes such as PEROXIDASE 34 (PRX34), BASIC LEUCINE ZIPPER 25 (bZIP25), RESISTANCE METHYLATED GENE 1 (RMG1) and WHITE RUST RESISTANCE 4 (WRR4). An antagonistic effect between biotic and osmotic stress was found for prx34 and arf4 mutants, which suggests PRX34 and ARF4 play an important role in the response to the combinatorial stress.</p>","PeriodicalId":18763,"journal":{"name":"Molecular plant pathology","volume":"25 3","pages":"e13436"},"PeriodicalIF":4.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10924621/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140068521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mining oomycete proteomes for phosphatome leads to the identification of specific expanded phosphatases in oomycetes. 通过挖掘卵菌蛋白质组中的磷酸酶组,发现了卵菌中特异的扩增磷酸酶。
IF 4.9 1区 农林科学
Molecular plant pathology Pub Date : 2024-03-01 DOI: 10.1111/mpp.13425
Min Qiu, Yaru Sun, Siqun Tu, Huaibo Li, Xin Yang, Haiyang Zhao, Maozhu Yin, Yaning Li, Wenwu Ye, Ming Wang, Yuanchao Wang
{"title":"Mining oomycete proteomes for phosphatome leads to the identification of specific expanded phosphatases in oomycetes.","authors":"Min Qiu, Yaru Sun, Siqun Tu, Huaibo Li, Xin Yang, Haiyang Zhao, Maozhu Yin, Yaning Li, Wenwu Ye, Ming Wang, Yuanchao Wang","doi":"10.1111/mpp.13425","DOIUrl":"10.1111/mpp.13425","url":null,"abstract":"<p><p>Phosphatases are important regulators of protein phosphorylation and various cellular processes, and they serve as counterparts to kinases. In this study, our comprehensive analysis of oomycete complete proteomes unveiled the presence of approximately 3833 phosphatases, with most species estimated to have between 100 and 300 putative phosphatases. Further investigation of these phosphatases revealed a significant increase in protein serine/threonine phosphatases (PSP) within oomycetes. In particular, we extensively studied the metallo-dependent protein phosphatase (PPM) within the PSP family in the model oomycete Phytophthora sojae. Our results showed notable differences in the expression patterns of PPMs throughout 10 life stages of P. sojae, indicating their vital roles in various stages of oomycete pathogens. Moreover, we identified 29 PPMs in P. sojae, and eight of them possessed accessory domains in addition to phosphate domains. We investigated the biological function of one PPM protein with an extra PH domain (PPM1); this protein exhibited high expression levels in both asexual developmental and infectious stages. Our analysis confirmed that PPM1 is indeed an active protein phosphatase, and its accessory domain does not affect its phosphatase activity. To delve further into its function, we generated knockout mutants of PPM1 and validated its essential roles in mycelial growth, sporangia and oospore production, as well as infectious stages. To the best of our knowledge, this study provides the first comprehensive inventory of phosphatases in oomycetes and identifies an important phosphatase within the expanded serine/threonine phosphatase group in oomycetes.</p>","PeriodicalId":18763,"journal":{"name":"Molecular plant pathology","volume":"25 3","pages":"e13425"},"PeriodicalIF":4.9,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10925823/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140094318","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A type VI secretion system effector TseG of Pantoea ananatis is involved in virulence and antibacterial activity. ananatis 盘尾丝菌的 VI 型分泌系统效应器 TseG 参与毒力和抗菌活性。
IF 4.8 1区 农林科学
Molecular plant pathology Pub Date : 2024-03-01 DOI: 10.1111/mpp.13442
Xiaozhen Zhao, Lu Gao, Qurban Ali, Chenjie Yu, Bingqin Yuan, Hai Huang, Juying Long, Qin Gu, Huijun Wu, Xuewen Gao
{"title":"A type VI secretion system effector TseG of Pantoea ananatis is involved in virulence and antibacterial activity.","authors":"Xiaozhen Zhao, Lu Gao, Qurban Ali, Chenjie Yu, Bingqin Yuan, Hai Huang, Juying Long, Qin Gu, Huijun Wu, Xuewen Gao","doi":"10.1111/mpp.13442","DOIUrl":"10.1111/mpp.13442","url":null,"abstract":"<p><p>The type VI secretion system (T6SS) of many gram-negative bacteria injects toxic effectors into adjacent cells to manipulate host cells during pathogenesis or to kill competing bacteria. However, the identification and function of the T6SS effectors remains only partly known. Pantoea ananatis, a gram-negative bacterium, is commonly found in various plants and natural environments, including water and soil. In the current study, genomic analysis of P. ananatis DZ-12 causing brown stalk rot on maize demonstrated that it carries three T6SS gene clusters, namely, T6SS-1, T6SS-2, and T6SS-3. Interestingly, only T6SS-1 secretion systems are involved in pathogenicity and bacterial competition. The study also investigated the T6SS-1 system in detail and identified an unknown T6SS-1-secreted effector TseG by using the upstream T6SS effector chaperone TecG containing a conserved domain of DUF2169. TseG can directly interact with the chaperone TecG for delivery and with a downstream immunity protein TsiG for protection from its toxicity. TseG, highly conserved in the Pantoea genus, is involved in virulence in maize, potato, and onion. Additionally, P. ananatis uses TseG to target Escherichia coli, gaining a competitive advantage. This study provides the first report on the T6SS-1-secreted effector from P. ananatis, thereby enriching our understanding of the various types and functions of type VI effector proteins.</p>","PeriodicalId":18763,"journal":{"name":"Molecular plant pathology","volume":"25 3","pages":"e13442"},"PeriodicalIF":4.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10933656/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140110662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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