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细菌种类之间的相互作用. 和石墨烯氧化物:对生理和营养调节的影响,以改善甘干旱抵御能力

Marcelo de Almeida Silva¹, Hariane Luiz Santos¹, Lusiane de Sousa Ferreira¹

¹São Paulo State University (UNESP), School of Agricultural Sciences, Laboratory of Ecophysiology Applied to Agriculture (LECA), 18610-034, Botucatu, SP, Brazil.

Plant physiology and biochemistry : PPB

|July 31, 2025

概括

将促进植物生长的细菌 (PGPB) 与氧化石墨烯 (GO) 结合起来,可显著改善甘对干旱的耐受性. 这种协同方法在缺水条件下增强营养吸收和生物质积累.

科学领域:

农业科学农业科学
植物科学植物科学
生物技术是生物技术.

背景情况:

干旱压力严重影响作物产量和农业可持续性.
促进植物生长的细菌 (PGPB) 和像氧化石墨烯 (GO) 这样的纳米材料显示出增强作物弹性的潜力.
甘 (Saccharum officinarum) 是一种易受水资源短缺影响的重要作物.

研究的目的:

评估Bacillus subtilis (FMCH002) 和Bacillus licheniformis (FMCH001),单独或与GO一起,在改善甘干旱耐受性的有效性.
评估甘在缺水条件下的生理,生化和营养反应.
确定PGPB和GO对甘生长和生物质的协同效应.

主要方法:

一个4x2的因数实验进行了四种治疗 (控制,PGPB,GO,PGPB+GO) 在两个水制度下 (水和50%的田间容量).
测量了生理参数 (二氧化碳同化,口腔导电性,含水量).
分析了生物化学标记物 (抗氧化酶,,H2O2,MDA) 和营养成分 (N,P,K,微量营养素).

主要成果:

PGPB+GO组合显著降低了蒸汽压力赤字,并改善了气体交换和水含量.
在干旱下PGPB的应用增加了抗氧化酶活性,proline积累,并减少了氧化损伤.
PGPB+GO增强了营养的可用性和吸收,导致甘组织中干物质的积累增加.

结论:

结合B. subtilis FMCH002,B. licheniformis FMCH001和GO的应用是缓解甘干旱压力的高效策略.
这种协同方法改善了营养获取,并大大提高了整体生物质生产.
PGPB和GO提供了一种可持续的解决方案,用于改善水资源有限的环境中的甘弹性和生产力.

关键词:

无生物应激应激是一种非生物应激.抗氧化剂的代谢抗氧化剂的代谢气体交易所气体交易所纳米材料是一种纳米材料.促进植物生长的细菌促进了植物生长.

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