Effects of different fertilization conditions and different geographical locations on the diversity and composition of the rhizosphere microbiota of Qingke (Hordeum vulgare L.) plants in different growth stages
文献类型: 外文期刊
作者: Wang, Lei 1 ; Wang, Handong 1 ; Liu, Meijin 4 ; Xu, Jinqing 1 ; Bian, Haiyan 1 ; Chen, Tongrui 1 ; You, En 1 ; Deng, Chao 1 ; Wei, Youhai 6 ; Yang, Tianyu 7 ; Shen, Yuhu 1 ;
作者机构: 1.Chinese Acad Sci, Northwest Inst Plateau Biol, Lab Res & Utilizat Qinghai Tibetan Plateau Germpla, Xining, Peoples R China
2.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining, Peoples R China
3.Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Prov Key Lab Crop Mol Breeding, Xining, Peoples R China
4.Gannan Inst Agr Sci, Hezuo, Peoples R China
5.Univ Chinese Acad Sci, Beijing, Peoples R China
6.Qinghai Univ, Acad Agr & Forestry Sci, Xining, Peoples R China
7.Gansu Acad Agr Sci, Crop Res Inst, Lanzhou, Peoples R China
8.Chinese Acad Sci, Innovat Acad Seed Design, Xining, Peoples R China
关键词: Qingke; rhizosphere microbiota; fertilization condition; geographical location; diversity
期刊名称:FRONTIERS IN MICROBIOLOGY ( 影响因子:5.2; 五年影响因子:6.2 )
ISSN:
年卷期: 2023 年 14 卷
页码:
收录情况: SCI
摘要: IntroductionThe excessive use of chemical fertilizer causes increasing environmental and food security crisis. Organic fertilizer improves physical and biological activities of soil. Rhizosphere microbiota, which consist of highly diverse microorganisms, play an important role in soil quality. However, there is limited information about the effects of different fertilization conditions on the growth of Qingke plants and composition of the rhizosphere microbiota of the plants. MethodsIn this study, we characterized the rhizosphere microbiota of Qingke plants grown in three main Qingke-producing areas (Tibet, Qinghai, and Gansu). In each of the three areas, seven different fertilization conditions (m1-m7, m1: Unfertilized; m2: Farmer Practice; m3: 75% Farmer Practice; m4: 75% Farmer Practice +25% Organic manure; m5: 50% Farmer Practice; m6: 50% Farmer Practice +50% Organic manure; m7: 100% Organic manure) were applied. The growth and yields of the Qingke plants were also compared under the seven fertilization conditions. ResultsThere were significant differences in alpha diversity indices among the three areas. In each area, differences in fertilization conditions and differences in the growth stages of Qingke plants resulted in differences in the beta diversity of the rhizosphere microbiota. Meanwhile, in each area, fertilization conditions, soil depths, and the growth stages of Qingke plants significantly affected the relative abundance of the top 10 phyla and the top 20 bacterial genera. For most of microbial pairs established through network analysis, the significance of their correlations in each of the microbial co-occurrence networks of the three experimental sites was different. Moreover, in each of the three networks, there were significant differences in relative abundance and genera among most nodes (i.e., the genera Pseudonocardia, Skermanella, Pseudonocardia, Skermanella, Aridibacter, and Illumatobacter). The soil chemical properties (i.e., TN, TP, SOM, AN, AK, CEC, Ca, and K) were positively or negatively correlated with the relative abundance of the top 30 genera derived from the three main Qingke-producing areas (p < 0.05). Fertilization conditions markedly influenced the height of a Qingke plant, the number of spikes in a Qingke plant, the number of kernels in a spike, and the fresh weight of a Qingke plant. Considering the yield, the most effective fertilization conditions for Qingke is combining application 50% chemical fertilizer and 50% organic manure. ConclusionThe results of the present study can provide theoretical basis for practice of reducing the use of chemical fertilizer in agriculture.
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