Rhizosphere bacteria induced by aluminum-tolerant and aluminum-sensitive soybeans in acid soil
Rhizosphere bacteria induced by aluminum-tolerant and aluminum-sensitive soybeans in acid soil
复制标题
DOI：
10.17221/652/2011-pse
复制
发表时间：
2018-02
影响因子：
2.4
通讯作者：
Tongyi Yang;Y. Ding;Y. Zhu;Y. Li;X. Wang;R. Yang;G. Lu;J. Qi;Y. Yang
中科院分区：
文献类型：
--
作者：
Tongyi Yang;Y. Ding;Y. Zhu;Y. Li;X. Wang;R. Yang;G. Lu;J. Qi;Y. Yang
根际微生物群落在多种土壤功能中起着重要作用。本研究旨在探讨耐铝大豆BX10和铝敏感大豆BD2根际土壤细菌和有机酸与群落功能的关系。根际土壤有机酸分析表明，BX10增加了柠檬酸的浓度，而BD2则降低了柠檬酸的浓度；苹果酸只存在于BX10的根际土壤中。冗余度分析结果还表明，两个大豆品种都诱导了不同的根际微生物群落，柠檬酸和苹果酸与BX10的根际细菌呈显著正相关。群落水平的生理图谱表明，BX10可能比BD2对有机碳基质的代谢能力有更大的影响。序列分析表明，两种大豆都能刺激一些根际细菌，如不动杆菌、变形念珠菌和未培养的蛋白细菌。这项研究表明，两种大豆的根际细菌可能与其有机酸分泌有关。
Rhizosphere microbial communities play a major role in multiple soil functions. The aim of this study is to assess the relation of bacteria and organic acids in rhizosphere soil and community function induced by soybean genotypes, BX10 [aluminum (Al)-tolerant soybean] and BD2 (Al-sensitive soybean). Organic acid analysis in the rhizosphere soil indicates that BX10 increased the concentration of citric acid, whereas BD2 decreased it; malic acid was only found in the rhizosphere soil of BX10. Redundancy analysis results also showed that the two soybean genotypes induced distinct rhizosphere microbial communities, and citric acid and malic acid had a significantly posi tive correlation with rhizosphere bacteria of BX10. The community level physiological profiling showed that BX10 might have more influence than BD2 on the ability to metabolize organic C substrates. Sequence analysis indicates that two soybeans stimulate some rhizobacteria, such as species of Acinetobacter, Candidatus Amoebinatus, and uncultured proteobacterium. This study revealed that rhizobacteria of two soybeans may be related to their organic acid exudation.