Sahu Parmeshwar K, Sao Richa, Choudhary Devendra K, Thada Antra, Kumar Vinay, Mondal Suvendu, Das Bikram K, Jankuloski Ljupcho, Sharma Deepak
Department of Genetics and Plant Breeding, Indira Gandhi Krishi Vishwavidyalaya, Raipur 492012, Chhattisgarh, India.
ICAR-Indian Agriculture Research Institute, Pusa, New Delhi 110012, India.
Plants (Basel). 2022 Sep 13;11(18):2386. doi: 10.3390/plants11182386.
Rice production needs to be sustained in the coming decades, as the changeable climatic conditions are becoming more conducive to disease outbreaks. The majority of rice diseases cause enormous economic damage and yield instability. Among them, rice blast caused by is a serious fungal disease and is considered one of the major threats to world rice production. This pathogen can infect the above-ground tissues of rice plants at any growth stage and causes complete crop failure under favorable conditions. Therefore, management of blast disease is essentially required to sustain global food production. When looking at the drawback of chemical management strategy, the development of durable, resistant varieties is one of the most sustainable, economic, and environment-friendly approaches to counter the outbreaks of rice blasts. Interestingly, several blast-resistant rice cultivars have been developed with the help of breeding and biotechnological methods. In addition, 146 R genes have been identified, and 37 among them have been molecularly characterized to date. Further, more than 500 loci have been identified for blast resistance which enhances the resources for developing blast resistance through marker-assisted selection (MAS), marker-assisted backcross breeding (MABB), and genome editing tools. Apart from these, a better understanding of rice blast pathogens, the infection process of the pathogen, and the genetics of the immune response of the host plant are very important for the effective management of the blast disease. Further, high throughput phenotyping and disease screening protocols have played significant roles in easy comprehension of the mechanism of disease spread. The present review critically emphasizes the pathogenesis, pathogenomics, screening techniques, traditional and molecular breeding approaches, and transgenic and genome editing tools to develop a broad spectrum and durable resistance against blast disease in rice. The updated and comprehensive information presented in this review would be definitely helpful for the researchers, breeders, and students in the planning and execution of a resistance breeding program in rice against this pathogen.
在未来几十年里,水稻生产需要持续下去,因为多变的气候条件越来越有利于疾病爆发。大多数水稻病害会造成巨大的经济损失并导致产量不稳定。其中,由[此处原文缺失相关病原体信息]引起的稻瘟病是一种严重的真菌病害,被认为是世界水稻生产的主要威胁之一。这种病原体可在水稻植株的任何生长阶段感染地上组织,并在适宜条件下导致作物绝收。因此,为了维持全球粮食生产,必须对稻瘟病进行防治。考虑到化学防治策略的缺点,培育持久抗病品种是应对稻瘟病爆发最具可持续性、经济性和环境友好性的方法之一。有趣的是,借助育种和生物技术方法已经培育出了几个抗稻瘟病的水稻品种。此外,已经鉴定出146个抗病基因,其中37个迄今已进行了分子特征分析。此外,已经确定了500多个抗稻瘟病位点,这增加了通过标记辅助选择(MAS)、标记辅助回交育种(MABB)和基因组编辑工具培育抗稻瘟病品种的资源。除此之外,深入了解稻瘟病病原体、病原体的感染过程以及寄主植物免疫反应的遗传学,对于有效防治稻瘟病非常重要。此外,高通量表型分析和病害筛选方案在易于理解病害传播机制方面发挥了重要作用。本综述着重强调了发病机制、病原体组学、筛选技术、传统和分子育种方法以及转基因和基因组编辑工具,以培育对水稻稻瘟病具有广谱和持久抗性的品种。本综述中提供的最新且全面的信息对于研究人员、育种者和学生在规划和实施针对这种病原体的水稻抗性育种计划时肯定会有所帮助。