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首页> 外文期刊>Archives of Agronomy and Soil Science >Rhizosphere microbiota assemblage associated with wild and cultivated soybeans grown in three types of soil suspensions
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Rhizosphere microbiota assemblage associated with wild and cultivated soybeans grown in three types of soil suspensions

机译：与野生和栽培大豆相关的根际微生物群组合，以三种类型的土壤悬浮液生长

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摘要

Soil microbial community composition is determined by the soil type and the plant species. By sequencing the V3-V4 region of the bacterial 16S rRNA gene amplicons, the current study assessed the bacterial community assemblage in rhizosphere and bulks soils of wild (Glycine soja) and cultivated (Glycine max) soybeans grown in the suspensions of three important soil types in China, including black, red and soda-saline-alkali soils. The alpha-diversity of the bacterial community in the rhizosphere was significantly higher than that of the bulk soils suggesting that bulk soil lacks plant nurturing effect under the current study conditions. Black and red soils were enriched with nitrifying and nitrogen-fixing bacteria but the soda-saline-alkali soil suspension had more denitrifying bacteria, which may reflect agronomic unsuitability of the latter. We also observed a high abundance of Bradyrhizobium and Pseudomonas, enriched cellulolytic bacteria, as well as a highly connected molecular ecological network in the G. soja rhizosphere soil. Taken all, the current study suggest that wild soybeans may have evolved to recruit beneficial microbes in its rhizosphere that can promote nutrients requisition, biostasis and disease-resistance, therefore ecologically more resilient than cultivated soybeans.
机译：土壤微生物群落组成由土壤类型和植物物种决定。通过测序细菌16s rRNA基因扩增子的V3-V4区域，目前的研究评估了根际的细菌群落组合，野生（甘氨酸SOJA）的散发土壤和培养（甘氨酸最大）大豆在三种重要土壤类型的悬浮液中种植的大豆在中国，包括黑色，红色和苏打盐碱土壤。根际细菌群落的α-多样性显着高于散装土壤，表明散装土壤缺乏植物培养效应在目前的研究条件下。富含硝化和氮固定细菌的黑色和红壤，但苏打盐碱土壤悬浮液具有更多的反硝化细菌，这可能反映了后者的农艺不合性。我们还观察到高丰富的Bradyrhizobium和假单胞菌，富集的纤维素分解细菌，以及G. soja根际土壤中高度连接的分子生态网络。目前的研究表明，野生大豆可能已经进化以促进其根际募集有益的微生物，可以促进营养征用，止血剂和抗病抵抗，从而更具栽培的大豆。

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