<br>烤烟土壤环境因素与微生物多样性的时程关系。,Scientific Reports

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烤烟土壤环境因素与微生物多样性的时程关系。
Scientific Reports ( IF 3.8 ) Pub Date : 2019-12-27 , DOI: 10.1038/s41598-019-55859-4
Zhaobao Wang ₁ , Yan Yang ₁ , Yuzhen Xia ₂ , Tao Wu ₃ , Jie Zhu ₃ , Jianming Yang ₁ , Zhengfeng Li ₃

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土壤理化特性和微生物多样性在烟草种植中发挥着同样重要的作用。然而，这些因素之间的关系仍不清楚。本研究调查了云贵玉溪地区烟草整个生育期的相关性，包括移栽前（YX-p）、伸根期（R）、盛盛期（F）和成熟期（M）。通过测量理化特性并进行 16S/18S rRNA 分析来达到稳定状态。分析表明，微生物群落丰富度和多样性随着烟草的生长过程而不断变化。多种环境因素与微生物群落多样性表现出一定的相关性。有些细菌在生长阶段可以积累氮，随着有机质含量的升高，细菌群落的多样性也随之增加。此外，含水量和速效钾也影响微生物群落的多样性。土壤理化性质和酶活性的动态变化引起微生物群落组成和结构的差异，从而影响烟草的生长。本研究揭示了环境因素与烟草土壤微生物多样性之间的时程关系。对这种关系的理解为研究植物、土壤和微生物的相互作用系统以及提高植物产量和品质提供了指导。

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Time-course relationship between environmental factors and microbial diversity in tobacco soil.

Soil physicochemical properties and microbial diversity both play equally important roles in tobacco cultivation. However, the relationship between these factors remains unclear. In this study, we investigated their correlations through the whole tobacco growth period, including the pretransplanting (YX-p), root extending (R), flourishing (F), and mature (M) stages in the Yuxi region of the Yunnan-Guizhou Plateau by measuring physicochemical properties and conducting 16S/18S rRNA analysis. The analysis demonstrated that the microbial community richness and diversity continuously changed along with the growth course of the tobacco. Multiple environmental factors showed a certain correlation with the diversity of microbial communities. Some bacteria could accumulate nitrogen during the growth stages, and the diversity of the bacterial community also increased when the content of organic matter rose. In addition, the water content and available K also influenced the diversity of the microbial community. The dynamic changes in soil physicochemical properties and enzyme activities gave rise to differences in the microbial community composition and structure, all of which affected the growth of tobacco. This study revealed the time-course relationship between environmental factors and microbial diversity in tobacco soil. An understanding of this relationship provides guidance for research on the interaction system of plants, soil and microbes and on improving plant yield and quality.

更新日期：2019-12-27

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