Current status of molecular rice breeding for durable and broad-spectrum resistance to major diseases and insect pests

IF 4.4 1区农林科学 Q1 AGRONOMY Theoretical and Applied Genetics Pub Date : 2024-09-10 DOI:10.1007/s00122-024-04729-3

Xiaoyan Cheng, Guohua Zhou, Wei Chen, Lin Tan, Qishi Long, Fusheng Cui, Lei Tan, Guoxing Zou, Yong Tan

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Abstract

In the past century, there have been great achievements in identifying resistance (R) genes and quantitative trait loci (QTLs) as well as revealing the corresponding molecular mechanisms for resistance in rice to major diseases and insect pests. The introgression of R genes to develop resistant rice cultivars has become the most effective and eco-friendly method to control pathogens/insects at present. However, little attention has been paid to durable and broad-spectrum resistance, which determines the real applicability of R genes. Here, we summarize all the R genes and QTLs conferring durable and broad-spectrum resistance in rice to fungal blast, bacterial leaf blight (BLB), and the brown planthopper (BPH) in molecular breeding. We discuss the molecular mechanisms and feasible methods of improving durable and broad-spectrum resistance to blast, BLB, and BPH. We will particularly focus on pyramiding multiple R genes or QTLs as the most useful method to improve durability and broaden the disease/insect spectrum in practical breeding regardless of its uncertainty. We believe that this review provides useful information for scientists and breeders in rice breeding for multiple stress resistance in the future.

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针对主要病虫害的持久和广谱抗性的分子水稻育种现状

上个世纪，在鉴定水稻主要病虫害的抗性（R）基因和数量性状位点（QTLs）以及揭示相应的分子机制方面取得了巨大成就。引入 R 基因培育抗性水稻栽培品种已成为目前控制病原体/虫害最有效、最环保的方法。然而，人们很少关注持久和广谱的抗性，这决定了 R 基因的真正适用性。在此，我们总结了分子育种中赋予水稻对真菌稻瘟病、细菌性叶枯病（BLB）和褐斑病（BPH）持久和广谱抗性的所有 R 基因和 QTL。我们将讨论提高对稻瘟病、细菌性叶枯病和褐飞虱的持久和广谱抗性的分子机制和可行方法。我们将特别关注将多个 R 基因或 QTLs 排列成金字塔，作为在实际育种中提高耐久性和扩大病/虫谱的最有用的方法，而不考虑其不确定性。我们相信，本综述将为科学家和育种家今后进行水稻抗多种胁迫育种提供有用的信息。

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来源期刊

Theoretical and Applied Genetics 生物-农艺学

CiteScore

9.60

自引率

7.40%

发文量

241

审稿时长

2.3 months

期刊介绍： Theoretical and Applied Genetics publishes original research and review articles in all key areas of modern plant genetics, plant genomics and plant biotechnology. All work needs to have a clear genetic component and significant impact on plant breeding. Theoretical considerations are only accepted in combination with new experimental data and/or if they indicate a relevant application in plant genetics or breeding. Emphasizing the practical, the journal focuses on research into leading crop plants and articles presenting innovative approaches.