SWEET genes and TAL effectors for disease resistance in plants: Present status and future prospects,Molecular Plant Pathology

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SWEET genes and TAL effectors for disease resistance in plants: Present status and future prospects
Molecular Plant Pathology ( IF 4.8 ) Pub Date : 2021-06-02 , DOI: 10.1111/mpp.13075
Pushpendra K Gupta ₁ , Harindra S Balyan ₁ , Tinku Gautam ₁

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SWEET genes encode sugar transporter proteins and often function as susceptibility (S) genes. Consequently, the recessive alleles of these SWEET genes provide resistance. This review summarizes the available literature on the molecular basis of the role of SWEET genes (as S genes) in the host and corresponding transcription activator-like effectors (TALEs) secreted by the pathogen. The review has four major sections, which follow a brief introduction: The first part gives some details about the occurrence and evolution of SWEET genes in approximately 30 plant species; the second part gives some details about systems where (a) SWEET genes with and without TALEs and (b) TALEs without SWEET genes cause different diseases; the third part summarizes the available information about TALEs along with interfering/truncated TALEs secreted by the pathogens; this section also summarizes the available information on effector-binding elements (EBEs) available in the promoters of either the SWEET genes or the Executor R genes; the code that is used for binding of TALEs to EBEs is also described in this section; the fourth part gives some details about the available approaches that are being used or can be used in the future for exploiting SWEET genes for developing disease-resistant cultivars. The review concludes with a section giving conclusions and future possibilities of using SWEET genes for developing disease-resistant cultivars using different approaches, including conventional breeding and genome editing.

中文翻译：

植物抗病性的 SWEET 基因和 TAL 效应子：现状与未来展望

SWEET 基因编码糖转运蛋白，通常充当易感性 (S) 基因。因此，这些 SWEET 基因的隐性等位基因提供了抗性。本综述总结了关于宿主中 SWEET 基因（即 S 基因）和病原体分泌的相应转录激活因子样效应子 (TALE) 作用的分子基础的现有文献。综述分为四个主要部分，简要介绍如下：第一部分详细介绍了 SWEET 基因在大约 30 种植物中的发生和进化；第二部分给出了有关系统的一些细节，其中（a）带有和不带有TALE的SWEET基因和（b）没有SWEET基因的TALE会导致不同的疾病；第三部分总结了有关 TALE 以及病原体分泌的干扰/截短 TALE 的可用信息；本节还总结了有关 SWEET 基因或执行器 R 基因启动子中可用的效应器结合元件 (EBE) 的可用信息；本节还描述了用于将 TALE 绑定到 EBE 的代码；第四部分详细介绍了正在使用或将来可用于利用 SWEET 基因开发抗病品种的可用方法。该综述的最后一节给出了结论和使用 SWEET 基因通过不同方法（包括传统育种和基因组编辑）开发抗病品种的未来可能性。

更新日期：2021-07-22

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