{"title":"Identification of NADPH Oxidase Genes Crucial for Rice Multiple Disease Resistance and Yield Traits","authors":"","doi":"10.1186/s12284-023-00678-5","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>Reactive oxygen species (ROS) act as a group of signaling molecules in rice functioning in regulation of development and stress responses. Respiratory burst oxidase homologues (Rbohs) are key enzymes in generation of ROS. However, the role of the nine <em>Rboh</em> family members was not fully understood in rice multiple disease resistance and yield traits. In this study, we constructed mutants of each <em>Rboh</em> genes and detected their requirement in rice multiple disease resistance and yield traits. Our results revealed that mutations of five <em>Rboh</em> genes (<em>RbohA</em>, <em>RbohB</em>, <em>RbohE</em>, <em>RbohH</em>, and <em>RbohI</em>) lead to compromised rice blast disease resistance in a disease nursery and lab conditions; mutations of five <em>Rbohs</em> (<em>Rboh</em>A, <em>RbohB</em>, <em>RbohC</em>, <em>RbohE</em>, and <em>RbohH</em>) result in suppressed rice sheath blight resistance in a disease nursery and lab conditions; mutations of six <em>Rbohs</em> (<em>Rboh</em>A, <em>RbohB</em>, <em>RbohC</em>, <em>RbohE</em>, <em>RbohH</em> and <em>RbohI</em>) lead to decreased rice leaf blight resistance in a paddy yard and ROS production induced by PAMPs and pathogen. Moreover, all <em>Rboh</em> genes participate in the regulation of rice yield traits, for all <em>rboh</em> mutants display one or more compromised yield traits, such as panicle number, grain number per panicle, seed setting rate, and grain weight, resulting in reduced yield per plant except <em>rbohb</em> and <em>rbohf</em>. Our results identified the <em>Rboh</em> family members involved in the regulation of rice resistance against multiple pathogens that caused the most serious diseases worldwide and provide theoretical supporting for breeding application of these <em>Rbohs</em> to coordinate rice disease resistance and yield traits.</p>","PeriodicalId":21408,"journal":{"name":"Rice","volume":"2 1","pages":""},"PeriodicalIF":4.8000,"publicationDate":"2024-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Rice","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1186/s12284-023-00678-5","RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRONOMY","Score":null,"Total":0}
引用次数: 0
Abstract
Reactive oxygen species (ROS) act as a group of signaling molecules in rice functioning in regulation of development and stress responses. Respiratory burst oxidase homologues (Rbohs) are key enzymes in generation of ROS. However, the role of the nine Rboh family members was not fully understood in rice multiple disease resistance and yield traits. In this study, we constructed mutants of each Rboh genes and detected their requirement in rice multiple disease resistance and yield traits. Our results revealed that mutations of five Rboh genes (RbohA, RbohB, RbohE, RbohH, and RbohI) lead to compromised rice blast disease resistance in a disease nursery and lab conditions; mutations of five Rbohs (RbohA, RbohB, RbohC, RbohE, and RbohH) result in suppressed rice sheath blight resistance in a disease nursery and lab conditions; mutations of six Rbohs (RbohA, RbohB, RbohC, RbohE, RbohH and RbohI) lead to decreased rice leaf blight resistance in a paddy yard and ROS production induced by PAMPs and pathogen. Moreover, all Rboh genes participate in the regulation of rice yield traits, for all rboh mutants display one or more compromised yield traits, such as panicle number, grain number per panicle, seed setting rate, and grain weight, resulting in reduced yield per plant except rbohb and rbohf. Our results identified the Rboh family members involved in the regulation of rice resistance against multiple pathogens that caused the most serious diseases worldwide and provide theoretical supporting for breeding application of these Rbohs to coordinate rice disease resistance and yield traits.
期刊介绍:
Rice aims to fill a glaring void in basic and applied plant science journal publishing. This journal is the world''s only high-quality serial publication for reporting current advances in rice genetics, structural and functional genomics, comparative genomics, molecular biology and physiology, molecular breeding and comparative biology. Rice welcomes review articles and original papers in all of the aforementioned areas and serves as the primary source of newly published information for researchers and students in rice and related research.