美国农业部芸苔属植物细菌性叶枯病抗性的新来源

IF 1.7 Q2 PLANT SCIENCES

Plant Health Progress Pub Date : 2024-07-10 DOI:10.1094/php-03-24-0028-rs

Khushwinder Kaur, W. Wechter, M. Farnham, Shane Robinson, Sandra E Branham

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引用次数: 0

摘要

由 Pseudomonas cannabina pv. alisalensis（Pcal）引起的细菌性叶枯病（BLB）是一种毁灭性病害，在过去二十年中已在全球蔓延。Pcal 可感染所有甘蓝作物，每年都会导致美国东南部甘蓝叶菜产量损失。目前还没有抗 Pcal 的芜菁菜商业栽培品种，也没有有效的杀菌剂。我们报告了首次在 Brassica rapa L. 中鉴定出对 Pcal 引起的细菌性叶枯病的抗性来源。我们在温室试验中对美国农业部的芸苔属品种（275 个品种）进行了多次筛选。测试的三个商业栽培品种在所有测试和复测中表现出中等反应。在 B. rapa 种质资源库中发现了三个具有显著抗性的品种（Ames 7572、PI 649171 和 PI 649183）。这些已鉴定的品种是培育抗 Pcal 油菜栽培品种和将抗性基因座导入油菜栽培品种的重要来源。

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Novel sources of resistance to bacterial leaf blight in the USDA Brassica rapa collection

Bacterial leaf blight (BLB), caused by Pseudomonas cannabina pv. alisalensis (Pcal), is a devastating disease that has spread worldwide over the past twenty years. Pcal can infect all Brassica crops and leads to yield losses of Brassica leafy greens across the Southeastern US every year. There are no commercial cultivars of turnip greens with resistance to Pcal and no effective bactericides available. We report the first identification of resistant sources in Brassica rapa L. against bacterial leaf blight, caused by Pcal. The USDA accessions of B. rapa (275 accessions) were screened through multiple tests in greenhouse trials. The three commercial cultivars tested exhibited an intermediate response across all tests and re-tests. Three accessions (Ames 7572, PI 649171, and PI 649183) with significant resistance were identified in the B. rapa germplasm collection. The identified accessions are an important source for development of B. rapa cultivars resistant to Pcal and introgression of the resistant loci into B. napus cultivars.

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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.