从耐旱植物中分离出来的PGPB有助于小麦植物克服透压力
Veronika N Pishchik1, Elena P Chizhevskaya1, Vladimir K Chebotar1
1All-Russia Research Institute for Agricultural Microbiology, Podbelskogo Hwy 3, Pushkin, 196608 Saint Petersburg, Russia.
Plants (Basel, Switzerland)
|December 17, 2024
概括
来自耐旱植物的植物生长促进细菌 (PGPB) 在透应激下增强小麦生长. 这些有益的微生物改善了叶绿素含量和荷尔蒙平衡,帮助小麦.
科学领域:
- 农业科学 农业科学
- 微生物学 微生物学
- 植物生理学 植物生理学
背景情况:
- 植物拥有独特的微生物组,有助于承受压力.
- 耐旱植物可能含有有益的微生物,能够赋予抗压能力.
- 了解植物微生物相互作用对于可持续农业至关重要.
研究的目的:
- 研究从耐旱植物中分离出来的促进植物生长的细菌 (PGPB) 在透应激下对小麦生长的疗效.
- 确定能够减轻小麦 (Triticum aestivum L.) 干旱压力的PGPB.
主要方法:
- 从驼 (Alhagi pseudoalhagi) 和白色草 (Chenopodium album) 中分离和识别PGPB.
- 在水培条件下,在12%的聚乙烯基醇-6000 (PEG) 诱导的透应激下,将PGPB应用于小麦植物.
- 对植物激素产生的分析 (IAA,ABA,GAS3),叶绿素含量,甲 (MDA) 水平,以及酶活动 (CAT,POX).
主要成果:
- 标识为Bacillus spp.,Paenibacillus sp.和Arthrobacter sp.的PGPB菌株,这些菌株都被发现. 它们可以产生各种植物激素.
- 所有测试的PGPBB在正常和透应激条件下都刺激了小麦的生长.
- PGPB的应用降低了MDA含量,增加了总叶绿素和叶绿素a,并调节了透应激下荷尔蒙恒温和CAT/POX活动.
结论:
- 从耐旱植物中分离出来的PGPB可以有效地促进小麦的生长,提高耐压力.
- 选择的PGPB菌株显示出减轻小麦种植干旱压力的巨大潜力.
- 这些发现支持使用有益的微生物作为一种可持续的策略,以提高作物对干旱的抵抗力.
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