Soil health improvements under cover crops are associated with enhanced soil content of cytokinins

IF 4.2 3区 生物学 Q1 PLANT SCIENCES
Plant Biology Pub Date : 2024-12-06 DOI:10.1111/plb.13743
I. Perera, A. Kisiala, K. A. Thompson, R. J. N. Emery
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引用次数: 0

Abstract

Abstract Image

覆盖作物对土壤健康的改善与土壤细胞分裂素含量的增加有关。
细胞分裂素是由植物和其他土壤生物产生的植物激素。包括细菌、真菌、昆虫和蚯蚓。这些生物可以向土壤释放ck,这可能对土壤健康和植物生长有积极的影响。然而,尚无研究将植物激素作为土壤健康指标。在根际土壤与块状土壤分离的根际盆栽中,采用覆盖作物萝卜和黑麦对土壤pH、土壤有机质、土壤活性炭、土壤微生物群落多样性和参与碳、氮、磷循环的胞外酶活性进行调控。利用HPLC-HRMS/MS技术对复土层中不同覆盖作物对ck的影响进行了比较。从土壤中检测到游离碱基- ck(反式玉米素(tZ)、异戊烯烯腺苷(iP)、核糖体- ck (rb - ck)、顺式玉米素核糖体(cZR)、异戊烯烯腺苷(iPR)和四种甲基硫化ck: 2-甲基硫代玉米素(2MeSZ)、2-甲基硫代异戊烯烯腺苷(2MeSZR)、2-甲基硫代异戊烯烯腺苷(2MeSiP)和2-甲基硫代异戊烯烯腺苷(2MeSiPR)。与未开垦土壤相比,覆盖作物土壤CK水平显著提高,反映了土壤CK剖面与其他土壤健康参数之间的正相关关系,特别是全CK和活性C水平与土壤微生物群落多样性之间的正相关关系。这是第一次详细的土壤CK分析和评估其作为一种新的、可靠的、短期土壤健康参数的潜在用途。覆盖作物土壤中CK浓度的增加可能反映了土壤生命(植物、微生物、动物)的活动水平,并为利用CK作为评估受农业管理策略影响的土壤健康的工具提供了理论依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Plant Biology
Plant Biology 生物-植物科学
CiteScore
8.20
自引率
2.60%
发文量
109
审稿时长
3 months
期刊介绍: Plant Biology is an international journal of broad scope bringing together the different subdisciplines, such as physiology, molecular biology, cell biology, development, genetics, systematics, ecology, evolution, ecophysiology, plant-microbe interactions, and mycology. Plant Biology publishes original problem-oriented full-length research papers, short research papers, and review articles. Discussion of hot topics and provocative opinion articles are published under the heading Acute Views. From a multidisciplinary perspective, Plant Biology will provide a platform for publication, information and debate, encompassing all areas which fall within the scope of plant science.
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