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米植物圈的Pantoea spp. 米植物圈的抑制爆发性和细菌性爆发性疾病

Wenda Sun¹, Qiao Liu², Huilin Chen¹

¹Guangdong Provincial Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou, 510642, China.

Environmental microbiome

|November 7, 2025

概括

有益的细菌Pantoea ananatis和Pantoea dispersa被确定为有效的生物控制剂,用于大米爆发和细菌爆发. 这些微生物抑制疾病,并通过培养植物免疫力来促进大米的生长.

科学领域:

微生物学微生物学
植物病理学植物病理学
农业科学农业科学

背景情况:

米生产面临着爆炸 (Magnaporthe oryzae) 和细菌爆发等疾病的威胁.
米植物中的微生物群落可能会影响疾病抵抗力或易感性.

研究的目的:

为了确定与水爆炸相关的细菌微生物群,并可能有助于疾病抵抗力.
评估孤立细菌对抗大米疾病的生物控制潜力.

主要方法:

从易受感染 (CO39) 和耐药 (Y33R) 米中采集的树根球土壤,根,茎和叶样本的微生物分析.
使用16S rRNA,gyrB,leuS和rpoB基因测序的细菌菌株的分离和鉴定.
基因组测序和平均核酸标识 (ANI) 分析用于菌株确认.
生物控制对抗大米爆发和细菌爆发的测定,包括对抗培养和基因表达分析.
评估促进植物生长的特征,如IAA生产,酸盐溶解,固定和 siderophore 生产.

主要成果:

干微生物群在敏感和耐药大米之间存在显著差异,其中Pantoea spp. 富含易受感染的茎.富含易受感染的茎.
通过基因组测序分离和证实了Pantoea ananatis (A25-11联盟) 和Pantoea dispersa (B10-A1).
无论是P. ananatis A25-11还是P. dispersa B10-A1都抑制了大米爆发和细菌爆发,作为非致病生物控制剂.
生物控制效应归因于诱导的植物免疫和ROS积累,而不是直接抑制病原体.
这些细菌还表现出促进植物生长的能力,包括IAA生产,酸盐溶解,固定和 siderophore 生产.
实地试验证实了A25-11和B10-A1.1通过A25-11和B10-A1.1抑制了叶子和花爆发.

结论:

建立了一种微生物组方法,用于识别具有农业意义的米细菌群落.
已识别的细菌菌株 (P. ananatis 和 P. dispersa) 显示出对米疾病管理和增长促进的潜力.

关键词:

潘托埃亚种类 (Pantoea spp.) 是一种植物.生物控制剂的生物控制剂.生物圈中的细菌微生物群.植物生长促进剂 (PGP)米的细菌病害米的细菌病害米爆发性疾病是什么?

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