潘托亚植物刺激物种 (Pantoea phytostimulans) 的种类 nov.,是一种具有促进植物生长特性的新品种
Jonatan C Campillo-Brocal1, María Sánchez-García2, Jorge Malo-López-Román2
1Department of Genetics and Microbiology, Faculty of Biology, University of Murcia, Murcia 30100, Spain.
概括
一种新的酸盐溶解细菌,Pantoea phytostimulans C3T,从中鉴定出来. 这种促进植物生长的细菌有助于营养溶解和激素生产,为农业带来好处.
科学领域:
- 微生物学 微生物学
- 植物科学 植物科学
- 基因组学就是基因组学.
背景情况:
- 树球细菌在植物的营养获取和生长中起着至关重要的作用.
- 酸盐溶解是提高植物可用性的关键特征.
- 属 *Pantoea* 包括已知的几种具有有益特性的与植物相关的细菌.
研究的目的:
- 从根基层中分离和描述一种新的酸盐溶解细菌菌株.
- 用多相方法确定新型隔离物的分类学分类.
- 研究新物种的植物生长促进能力和基因组特征.
主要方法:
- 将细菌从果根球中分离出来.
- 多相分类学表征包括格拉姆染色,运动性测试和极地鞭毛观测.
- 基因基因分析基于16S rRNA基因测序.
- 全基因组测序和分析 (DNA-DNA杂交,平均核酸相同性).
- 细胞脂肪酸的化学分类学分析.
- 在体外测定促进植物生长的活动 (酸盐,K,Ca,Si溶解,IAA和 siderophore 生产).
主要成果:
- 一种新型的氏阴性,选择性无氧,运动棒,菌株C3T,被分离出来.
- 遗传学分析将C3T菌株置于*Pantoea*属内,与已知的*Pantoea*物种有98.66%的16S rRNA基因相似性.
- 基因组分析证实了其作为新物种的地位,DNA-DNA杂交值和平均核酸标识低于物种划分值.
- 菌株C3T表现出显著的酸盐溶解和其他促进植物生长的活动,包括K,Ca和Si溶解,以及印-3-酸 (IAA) 和 siderophores 的产生.
- 该基因组含有与酸盐溶解, siderophore 生物合成和生产植物激素如 IAA 和细胞因素相关的基因.
结论:
- 菌株C3T代表了 *Pantoea* 属内的新物种,被提出为 *Pantoea phytostimulans* sp. 在新的一年里.
- 鉴定的细菌具有多种促进植物生长的特征,使其成为农业应用的有希望的候选者.
- 基因组数据提供了关于这种新物种代谢能力和植物有益功能的见解.
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