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The effects of Rhodopseudomonas palustris PSB06 and CGA009 with different agricultural applications on rice growth and rhizosphere bacterial communities

文献类型： 外文期刊

作者： Luo, Luyun 1 ; Wang, Pei 2 ; Zhai, Zhongying 2 ; Su, Pin 2 ; Tan, Xinqiu 2 ; Zhang, Deyong 2 ; Zhang, Zhuo 2 ; Liu, Yong 2 ;

作者机构： 1.Hunan Agr Univ, Coll Biosci & Biotechnol, Changsha, Hunan, Peoples R China

2.Hunan Acad Agr Sci, Hunan Plant Protect Inst, Changsha, Hunan, Peoples R China

关键词： Photosynthetic bacteria; PSB06; CGA009; Rhizosphere microorganism; Rice

期刊名称：AMB EXPRESS （ 影响因子：3.298； 五年影响因子：3.427 ）

ISSN： 2191-0855

年卷期： 2019 年 9 卷 1 期

页码：

收录情况： SCI

摘要： In recent years, the photosynthetic bacteria have been used widely in agriculture, but the effects of different agricultural applications on crop rhizosphere microorganism and crops are lack. In this study, we provide new insights into the structure and composition of the rice root-associated microbiomes as well as the effect on crop of the Rhodopseudomonas palustris(R. palustris) PSB06 and CGA009 at the rice seedling stage with seed immersion and root irrigation. Compare with CK group, the length of stem, the peroxidase (POD), and superoxide dismutase (SOD) activities in PSB06 treatment group was significantly higher, while the length of stem in CGA009 treatment group was significantly higher. The POD and SOD activities in CGA009 treatment groups only were higher slightly than the CK group. In the study, the dominant phyla were Proteobacteria (51.95-61.66%), Bacteroidetes (5.40-9.39%), Acidobacteria (4.50-10.52%), Actinobacteria (5.06-8.14%), Planctomycetes (2.90-4.48%), Chloroflexi (2.23-5.06%) and Firmicutes (2.38-7.30%), accounted for 87% bacterial sequences. The principal coordinate analysis (pCoA) and mantel results showed the two application actions of R. palustris CGA009 and PSB06 had significant effects on rice rhizosphere bacterial communities (p<0.05). The PSB06 can significantly promote the rice growth and enhance stress resistance of rice at the seedling stage, while the R. palustris CGA009 has no significant effect on rice. Dissimilarity test and canonical correspondence analysis (CCA) results showed that the TN and pH were the key factors affecting rice rhizosphere bacterial community in the seedling stage. This study will provide some guidance advices for the study of the microecological regulation of photosynthetic bacteria on crops.

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