植物二次代谢物依赖的植物-土壤反可以提高田间作物产量
Valentin Gfeller1, Jan Waelchli2, Stephanie Pfister3
1Institute of Plant Sciences, University of Bern, Bern, Switzerland.
eLife
|August 1, 2023
概括
植物根排泄物可以提高作物产量. 生产氧胺的玉米植物通过在田间条件下有利的植物-土壤反,提高了冬季小麦的性能和产量超过4%.
科学领域:
- 农业科学 农业科学
- 植物生物学 植物生物学
- 土壤科学 土壤科学
背景情况:
- 植物二次代谢物释放到树叶球中,影响土壤特性和植物相互作用.
- 这些植物-土壤反对作物轮换生产率和食品质量的影响在很大程度上仍未被探索.
研究的目的:
- 为了研究由玉米和不同氧化产量的玉米条件下的土壤如何影响冬季小麦的表现,产量和食品质量.
- 了解植物二次代谢物在农业环境中调解植物-土壤反中的作用.
主要方法:
- 建立了田地,土壤条件是野生类型或佐胺缺乏 (bx1突变) 玉米.
- 冬季小麦的表现,产量和食品质量在这些条件化的土壤中进行了评估.
- 在玉米种植后和小麦生长期间,分析了土壤的化学和微生物指纹.
主要成果:
- 被野生类型玉米调节的土壤在小麦生长过程中显示出依赖佐胺的化学指纹.
- 与bx1突变种相比,冬季小麦在由野生类型玉米条件下的土壤中表现出更多的出现,耕种,生长和生物量.
- 小麦产量增加了4%以上,在佐化物调节的土壤中,谷物质量没有受到损害,这与增强的发芽和耕作有关.
结论:
- 植物的二次代谢物,特别是玉米中的氧,可以通过田间条件下的植物-土壤反来积极影响后续作物表现和产量.
- 优化根排泄化学呈现出一个有希望的,基因可控的战略,以可持续地提高作物产量.
- 这些发现凸显了利用植物-土壤相互作用来提高农业生产力的潜力,而无需增加外部投入.
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