Diversity of nitrogen-fixing bacteria in Suaeda salsa rhizosphere during reproduction in the Yellow River delta

IF 4.6 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

iScience Pub Date : 2024-10-28 DOI:10.1016/j.isci.2024.111267

Deliang Xu , Qikang Wang , Meng Gao , Yating Li , Youjun Wang , Yuxin Jiang , Xiaohong Guo , Nan Wu

引用次数: 0

Abstract

Salinization in the Yellow River delta poses a challenge for agriculture, but nitrogen-fixing bacteria can improve soil nitrogen content and enhance plant growth under salt stress. This study focuses on the salt-tolerant plant Suaeda salsa, analyzing its plant traits and the diversity of nitrogen-fixing bacteria in its rhizosphere using the nifH gene. Results show a gradual decline in plant height, fresh weight, and microbial diversity from inland to coastal areas. The rhizosphere bacteria, mainly from the Proteobacteria and Cyanobacteria phyla, are influenced by environmental factors such as alkali hydrolyzed nitrogen (AN), soil organic matter (SOM), electrical conductivity (EC), and pH. The rhizosphere serves as a microbial resource with potential agricultural applications for saline soils.

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黄河三角洲 Suaeda salsa 根瘤菌繁殖过程中固氮菌的多样性

黄河三角洲的盐碱化给农业带来了挑战，但固氮菌可以提高土壤中的氮含量，促进植物在盐胁迫下的生长。本研究以耐盐植物 Suaeda salsa 为研究对象，利用 nifH 基因分析其植物性状及其根瘤中固氮菌的多样性。结果表明，从内陆到沿海地区，植物高度、鲜重和微生物多样性逐渐下降。根瘤菌主要来自变形菌门和蓝细菌门，受碱水解氮（AN）、土壤有机质（SOM）、电导率（EC）和 pH 值等环境因素的影响。根瘤菌圈是一种微生物资源，在盐碱地上具有潜在的农业应用价值。

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

iScience Multidisciplinary-Multidisciplinary

CiteScore

7.20

自引率

1.70%

发文量

1972

审稿时长

6 weeks

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