谷物中脱氧雪腐镰刀菌烯醇的积累和解毒及其在小麦-禾谷镰刀菌相互作用中的潜在作用

IF 4.6 4区 农林科学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY
Kun Luo, Jiao Guo, Dejia He, Guangwei Li, Thérèse Ouellet
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引用次数: 0

摘要

脱氧雪腐镰刀菌烯醇(DON)是一种重要的真菌毒素,在植物病原体禾谷镰刀菌感染期间在谷类植物中表现出显著的积累。它是禾谷镰刀菌在谷穗内传播的一个重要毒力因子,会导致严重的产量损失和严重的谷物污染。近几十年来,遗传学和基因组学研究促进了禾谷镰刀菌DON生物合成的分子途径以及影响DON积累的环境因素的表征。此外,已经鉴定了与抑制DON在植物中积累有关的多种赤霉病抗性性状,小麦-病原体相互作用的实验研究有助于理解寄主植物的解毒机制。本文在现有文献的基础上,阐述和总结了禾谷镰刀菌产生DON真菌毒素的分子网络以及植物中DON解毒的方法,为作物改良计划提供了分子靶标。这篇综述还全面讨论了基因工程介导的品种改良以增强赤霉病抗性的最新进展和挑战。此外,基因工程的不断进步将使这些分子靶标的应用能够开发出更多具有DON解毒特性的抗赤霉病小麦品种。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Deoxynivalenol accumulation and detoxification in cereals and its potential role in wheat–Fusarium graminearum interactions

Deoxynivalenol accumulation and detoxification in cereals and its potential role in wheat–Fusarium graminearum interactions

Deoxynivalenol (DON) is a prominent mycotoxin showing significant accumulation in cereal plants during infection by the phytopathogen Fusarium graminearum. It is a virulence factor that is important in the spread of F. graminearum within cereal heads, and it causes serious yield losses and significant contamination of cereal grains. In recent decades, genetic and genomic studies have facilitated the characterization of the molecular pathways of DON biosynthesis in F. graminearum and the environmental factors that influence DON accumulation. In addition, diverse scab resistance traits related to the repression of DON accumulation in plants have been identified, and experimental studies of wheat–pathogen interactions have contributed to understanding detoxification mechanisms in host plants. The present review illustrates and summarizes the molecular networks of DON mycotoxin production in F. graminearum and the methods of DON detoxification in plants based on the current literature, which provides molecular targets for crop improvement programs. This review also comprehensively discusses recent advances and challenges related to genetic engineering-mediated cultivar improvements to strengthen scab resistance. Furthermore, ongoing advancements in genetic engineering will enable the application of these molecular targets to develop more scab-resistant wheat cultivars with DON detoxification traits.

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CiteScore
7.70
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