肯塔基州大豆靶斑病原菌 Corynespora cassiicola 的分离株含有 G143A 突变，对醌外抑制剂杀菌剂产生抗性

IF 1.7 Q2 PLANT SCIENCES

Plant Health Progress Pub Date : 2024-05-16 DOI:10.1094/php-12-23-0108-br

D. Neves, Carl A. Bradley

{"title":"肯塔基州大豆靶斑病原菌 Corynespora cassiicola 的分离株含有 G143A 突变，对醌外抑制剂杀菌剂产生抗性","authors":"D. Neves, Carl A. Bradley","doi":"10.1094/php-12-23-0108-br","DOIUrl":null,"url":null,"abstract":"Target spot, caused by Corynespora cassiicola, is a soybean disease of increasing importance in the southern United States. Recently, isolates of C. cassiicola with resistance to quinone outside inhibitor (QoI) fungicides have been confirmed with the G143A mutation in multiple southern states, including Alabama, Arkansas, Mississippi, and Tennessee. From 2017 to 2019, a total of 84 isolates of C. cassiicola were recovered from soybean field in 12 counties in Kentucky. DNA sequencing of the cytochrome b gene of these isolates revealed that 15.5% of the isolates had the G143A mutation that confers resistance to QoI fungicides and were in 50% of the counties in which isolates originated. This represents the first report of QoI fungicide resistance in C. cassiicola isolates from Kentucky soybean fields. Considering these findings, Kentucky soybean growers should adopt target spot management practices which include rotating to non-host crops, planting resistant soybean cultivars, and applying fungicides from different fungicide classes.","PeriodicalId":20251,"journal":{"name":"Plant Health Progress","volume":null,"pages":null},"PeriodicalIF":1.7000,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Isolates of Corynespora cassiicola, Causal Agent of Target Spot of Soybean, in Kentucky Contain the G143A Mutation Conferring Resistance to Quinone Outside Inhibitor Fungicides\",\"authors\":\"D. Neves, Carl A. Bradley\",\"doi\":\"10.1094/php-12-23-0108-br\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Target spot, caused by Corynespora cassiicola, is a soybean disease of increasing importance in the southern United States. Recently, isolates of C. cassiicola with resistance to quinone outside inhibitor (QoI) fungicides have been confirmed with the G143A mutation in multiple southern states, including Alabama, Arkansas, Mississippi, and Tennessee. From 2017 to 2019, a total of 84 isolates of C. cassiicola were recovered from soybean field in 12 counties in Kentucky. DNA sequencing of the cytochrome b gene of these isolates revealed that 15.5% of the isolates had the G143A mutation that confers resistance to QoI fungicides and were in 50% of the counties in which isolates originated. This represents the first report of QoI fungicide resistance in C. cassiicola isolates from Kentucky soybean fields. Considering these findings, Kentucky soybean growers should adopt target spot management practices which include rotating to non-host crops, planting resistant soybean cultivars, and applying fungicides from different fungicide classes.\",\"PeriodicalId\":20251,\"journal\":{\"name\":\"Plant Health Progress\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.7000,\"publicationDate\":\"2024-05-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Plant Health Progress\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1094/php-12-23-0108-br\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"PLANT SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plant Health Progress","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1094/php-12-23-0108-br","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PLANT SCIENCES","Score":null,"Total":0}

引用次数: 0

摘要

由 Corynespora cassiicola 引起的靶斑病是美国南部一种日益重要的大豆病害。最近，在南部多个州，包括阿拉巴马州、阿肯色州、密西西比州和田纳西州，已确认了对醌外抑制剂（QoI）杀真菌剂具有抗性的 C. cassiicola 分离物，其突变为 G143A。2017 年至 2019 年，从肯塔基州 12 个县的大豆田中共分离出 84 株 C. cassiicola。对这些分离株的细胞色素 b 基因进行 DNA 测序后发现，15.5% 的分离株具有 G143A 突变，该突变可赋予其对 QoI 杀菌剂的抗性，并且在分离株来源的 50%的县中都存在这种突变。这是首次报告肯塔基州大豆田中的 C. cassiicola 分离物具有 QoI 杀菌剂抗性。考虑到这些发现，肯塔基州的大豆种植者应采取靶斑管理措施，包括轮作非寄主作物、种植抗性大豆品种以及使用不同杀菌剂类别的杀菌剂。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Isolates of Corynespora cassiicola, Causal Agent of Target Spot of Soybean, in Kentucky Contain the G143A Mutation Conferring Resistance to Quinone Outside Inhibitor Fungicides

Target spot, caused by Corynespora cassiicola, is a soybean disease of increasing importance in the southern United States. Recently, isolates of C. cassiicola with resistance to quinone outside inhibitor (QoI) fungicides have been confirmed with the G143A mutation in multiple southern states, including Alabama, Arkansas, Mississippi, and Tennessee. From 2017 to 2019, a total of 84 isolates of C. cassiicola were recovered from soybean field in 12 counties in Kentucky. DNA sequencing of the cytochrome b gene of these isolates revealed that 15.5% of the isolates had the G143A mutation that confers resistance to QoI fungicides and were in 50% of the counties in which isolates originated. This represents the first report of QoI fungicide resistance in C. cassiicola isolates from Kentucky soybean fields. Considering these findings, Kentucky soybean growers should adopt target spot management practices which include rotating to non-host crops, planting resistant soybean cultivars, and applying fungicides from different fungicide classes.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Plant Health Progress Agricultural and Biological Sciences-Horticulture

CiteScore

3.00

自引率

13.00%

发文量

期刊介绍： Plant Health Progress, a member journal of the Plant Management Network, is a multidisciplinary science-based journal covering all aspects of applied plant health management in agriculture and horticulture. Both peer-reviewed and fully citable, the journal is a credible online-only publication. Plant Health Progress is a not-for-profit collaborative endeavor of the plant health community at large, serving practitioners worldwide. Its primary goal is to provide a comprehensive one-stop Internet resource for plant health information.