由空中根产生的粘液宿主是提供的亚热菌,在 Sorghum bicolor 中提供
Rafael E Venado1, Jennifer Wilker1, Vânia C S Pankievicz1
1Department of Bacteriology, University of Wisconsin-Madison, Madison, Wisconsin, United States of America.
PLoS biology
|March 3, 2025
概括
的空中根产生粘液,其中含有固定的细菌. 这种自然的结合使植物能够从大气中获得高达40%的,从而减少了肥料的需求.
科学领域:
- 农业科学 农业科学
- 微生物学 微生物学
- 植物科学 植物科学
背景情况:
- (Sorghum bicolor) 是粮食,料,料和生物能源的全球重要作物.
- 某些子品种发展出空中根,散发出富含碳水化合物的粘液,类似于已知的固细菌 (diazotrophs) 的玉米陆地种.
研究的目的:
- 调查的空中根的发展及其对湿度的反应.
- 为了描述的微生物组,空中根粘液.
- 为了量化与相关的类植物的固能力.
主要方法:
- 的空中根部发育和湿度影响的特征.
- 在和玉米中空中根粘液的微生物组分析.
- 从 Sorghum 粘液中分离和识别阴性菌.
- 乙烯还原,15N2气体养和15N同位素稀释试验以确认固定.
主要成果:
- 在粘液中占主导地位的细菌系是Pseudomonadota,Bacteroidota和Bacillota,其丰度因基因型和位置而异.
- 从田间种植的小麦粘液中成功分离出了众多的二氧化菌.
- 固定测试证实,可以通过空中根协会从大气N2中获得约40%的.
结论:
- 草的空中根粘液中含有能够显著地固定大气中的共生性亚热菌.
- 这种天然固能力是减少农业对合成肥料的依赖的可持续方法.
- 利用这种特征可以提高的可持续生产,用于食品,料,料和生物能源.
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