Beneficial Effect and Potential Risk of Pantoea on Rice Production.
Beneficial Effect and Potential Risk of Pantoea on Rice Production.
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全菌对水稻生产的有益影响及潜在风险
DOI：
10.3390/plants11192608
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发表时间：
2022-10-04
期刊：
影响因子：
--
通讯作者：
Li B
中科院分区：
文献类型：
--
作者：
Lv L;Luo J;Ahmed T;Zaki HEM;Tian Y;Shahid MS;Chen J;Li B
泛菌属细菌广泛分布于稻田环境中，但其作用相互矛盾。有些菌株能促进水稻生长，保护水稻免受病原菌感染或非生物胁迫，但也有一些菌株对水稻表现出毒性，甚至引起严重的水稻病害。为了有效利用泛菌在水稻生产中的作用，分析了泛菌对水稻生长的利与弊的作用机理。泛菌对水稻的有益作用包括促进生长、减轻非生物危害和抑制病害。其促生作用可能主要是固氮、解磷、植物生理变化、铁载体、胞外多糖、1-氨基环丙烷-1-羧酸脱氨酶和植物激素（包括细胞分裂素、吲哚-3-乙酸（IAA）、生长素、脱落酸和赤霉酸）的生物合成;其抑病作用可能主要是诱导抗性、养分和空间竞争。以及各种抗生素的生产。泛菌属的致病机制主要是细菌运动性、植物激素如IAA的产生、群体感应相关信号分子和一系列细胞壁降解酶，而泛菌属致病相关基因包括编码质粒的基因如pPATH质粒、过敏反应和致病系统以及各种类型的分泌系统如T3 SS和T6 SS。最后，对该领域存在的科学问题进行了讨论，并对未来的研究方向进行了展望。
Bacteria from the genus Pantoea have been reported to be widely distributed in rice paddy environments with contradictory roles. Some strains promoted rice growth and protected rice from pathogen infection or abiotic stress, but other strain exhibited virulence to rice, even causing severe rice disease. In order to effectively utilize Pantoea in rice production, this paper analyzed the mechanisms underlying beneficial and harmful effects of Pantoea on rice growth. The beneficial effect of Pantoea on rice plants includes growth promotion, abiotic alleviation and disease inhibition. The growth promotion may be mainly attributed to nitrogen-fixation, phosphate solubilization, plant physiological change, the biosynthesis of siderophores, exopolysaccharides, 1-aminocyclopropane-1-carboxylic acid deaminase and phytohormones, including cytokinin, indole-3-acetic acid (IAA), auxins, abscisic acid and gibberellic acid, while the disease inhibition may be mainly due to the induced resistance, nutrient and spatial competition, as well as the production of a variety of antibiotics. The pathogenic mechanism of Pantoea can be mainly attributed to bacterial motility, production of phytohormones such as IAA, quorum sensing-related signal molecules and a series of cell wall-degrading enzymes, while the pathogenicity-related genes of Pantoea include genes encoding plasmids, such as the pPATH plasmid, the hypersensitive response and pathogenicity system, as well as various types of secretion systems, such as T3SS and T6SS. In addition, the existing scientific problems in this field were discussed and future research prospects were proposed.
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