| Effects of water stress during single growth period on soil enzyme activities and microbial communities in the rhizosphere of greenhouse grape |
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| DOI：10.7606/j.issn.1000-7601.2021.03.08 |
| Key Words: greenhouse grapes enzyme activity rhizosphere soil water stress bacterial community single growth period |
| Author Name | Affiliation | | GAO Yanting | College of Water Resources and Hydropower Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | HUANG Zhen | College of Water Resources and Hydropower Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | ZHANG Rui | College of Water Resources and Hydropower Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | WANG Fei | Shaanxi Provincial Land Engineering Construction Group, Xi’an, Shaanxi 710075, China | | DONG Bo | Academy of Agricultural Sciences, Lanzhou, Gansu 730070, China | | YANG Changyu | College of Water Resources and Hydropower Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | LI Hongxia | College of Water Resources and Hydropower Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| In order to clarify the effect of water stress on soil enzyme activity and microbial community structure during single growth period, five\|year\|old ‘Red Globe’ table grapes were selected as the experimental materials, and a single\|factor completely randomized trial design was adopted. The treatments included adequate water supply throughout the growth period as the control (CK), and two water stress levels as mild (M) and severe (S) in five growth periods of the grapes in the field. We used Illumina high\|throughput sequencing technology to analyze the community composition and diversity of soil microorganisms. The results showed that the soil amylase activity, invertase activity, and microbial biomass carbon of grape rhizosphere were sensitive to water stress. In the early stage of grape growth, mild water stress significantly increased soil amylase activity. FM amylase activity at flowering stage increased by 13.5% compared with that of CK; short\|term severe water stress and rewatering had a compensation effect on soil enzyme activity and microbial biomass carbon. GS and PS soil microbial biomass carbon increased by 13.4% and 15.6%, respectively, compared with CK in the coloring mature period. Moderate water stress increased soil microbial biomass carbon while short\|term water stress increased the abundance of soil bacterial communities, thereby improved rhizosphere soil microbial activity. At the phylum level, the microbial abundance rankings of TOP 10 species had obvious differences under water stress during a single growth period. Proteobacteria was always the dominant group, accounting for an average of 41.06%. However, the relative abundance of grapes was affected by different growth periods and the main environmental factors were different. |
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