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在用微生物联盟接种土壤后,聚-3-基酸盐的生物降解:土壤微生物群和植物对改变环境的反应

Martin Brtnicky¹, Vaclav Pecina¹, Jiri Kucerik²

¹Institute of Chemistry and Technology of Environmental Protection, Faculty of Chemistry, Brno University of Technology, Purkynova 118, 612 00 Brno, Czech Republic; Department of Agrochemistry, Soil Science, Microbiology and Plant Nutrition, Faculty of AgriSciences, Mendel University in Brno, Zemedelska 1, 613 00 Brno, Czech Republic.

The Science of the total environment

|June 30, 2024

概括

生物降解塑料,如聚3-基酸 (P3HB) 可以抑制植物生长,由于营养竞争. 微生物注射改善了P3HB降解和营养循环,但并没有完全克服生菜的生长限制.

科学领域:

环境科学环境科学
微生物学微生物学
农业学是一种农业学.

背景情况:

生物降解塑料,如Poly-3-hydroxybutyrate (P3HB),为塑料废物提供解决方案,但可能对植物生长产生负面影响.
在P3HB生物降解过程中微生物对营养的竞争是限制植物发展的关键因素.
用有益的微生物接种土壤是减轻这些负面影响的潜在策略.

研究的目的:

评估Poly-3-hydroxybutyrate (P3HB) 修改和微生物接种对生菜生长和P3HB生物降解的影响.
评估微生物注射剂在提高土壤中营养可用性和P3HB降解中的作用.
为了确定微生物注射是否可以克服P3HB诱导的植物生长抑制.

主要方法:

进行了一项盆栽实验,使用在土壤中种植的生菜进行了修改,添加了两剂 (1%和5%重/重) P3HB.
实验组包括单独P3HB,P3HB与微生物注射剂 (MI) 以及单独MI.
测量包括P3HB降解率,土壤呼吸,酶活动,营养物质矿化 (C,N,S,P) 和植物生物质产量.

主要成果:

P3HB降解是高效的,并且取决于生物塑料度,微生物优先使用P3HB作为碳来源.
微生物注射增强了P3HB降解和营养循环 (N,S,P),增加了土壤呼吸和酶活动.
尽管进行了微生物注射,但植物生物质产量有限,这表明P3HB诱导的生长抑制的缓解不完全.

结论:

P3HB生物降解会增加营养物质的矿化,但会导致营养物质的竞争,抑制植物生长.
微生物注射可以改善P3HB降解和营养循环,但不能完全解决植物生长抑制.
需要进一步的研究来制定有效平衡可生物降解塑料降解与最佳植物生长的战略.

关键词:

农业生产农业生产生物塑料是生物塑料.这是PGPR的PGPR.植物生长抑制植物生长抑制塑料污染问题塑料污染问题土壤营养物质土壤营养物质

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