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Gu JC, Wang WM, Wang Z, Li LH, Jiang GJ, Wang JP, Cheng ZB. Effects of maize and soybean intercropping on soil phosphorus bioavailability and microbial community structure in rhizosphere. Ying Yong Sheng Tai Xue Bao 2023; 34:3030-3038. [PMID: 37997414 DOI: 10.13287/j.1001-9332.202311.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
To investigate the effect of maize/soybean intercropping on rhizosphere soil microbial communities and phosphorus (P) bioavailability, we examined the changes of soil bioavailable P fractions and microbial community characteristics in the monoculture and intercropping systems based on high-throughput sequencing. The results showed that maize/soybean intercropping increased the contents of rhizosphere soil organic matter (SOM), available phosphorus (AP), microbial biomass phosphorus (MBP), and aboveground biomass. The increase of AP was mainly related to the increasing enzyme extracted phosphorus (Enzyme-P) and hydrochloric acid extracted phosphorus (HCl-P) contents. The dominant bacterial phyla under each treatment were Proteobacteria, Actinobacteria, Acidobacteria and Chloroflexi, while the dominant bacterial genera were Nocardioides, Solirubacter, Sphingomonas and Arthrobacter, with Proteobacteria and Sphingomonas having the highest relative abundance. The relative abundance of Proteobacteria and Sphingomonas in intercropping maize rhizosphere soil was significantly higher than that in monoculture, and that of Proteobacteria in intercropping soybean rhizosphere soil was significantly higher than monoculture. Soil properties and P fractions were closely related to the rhizosphere soil microbial composition. In all, maize/soybean intercropping could affect the rhizosphere soil P bioavailability by altering the structure of rhizosphere microbial communities.
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Affiliation(s)
- Jia-Cheng Gu
- Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Corps, Shihezi 832003, Xinjiang, China
- College of Agriculture, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Wen-Min Wang
- College of Agriculture, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Zhen Wang
- Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Corps, Shihezi 832003, Xinjiang, China
- College of Agriculture, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Lu-Hua Li
- College of Agriculture, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Gui-Ju Jiang
- Agriculture and Rural Bureau of Bole, Bole 833400, Xinjiang, China
| | - Jia-Ping Wang
- Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Corps, Shihezi 832003, Xinjiang, China
- College of Agriculture, Shihezi University, Shihezi 832003, Xinjiang, China
| | - Zhi-Bo Cheng
- Key Laboratory of Oasis Eco-Agriculture, Xinjiang Production and Construction Corps, Shihezi 832003, Xinjiang, China
- College of Agriculture, Shihezi University, Shihezi 832003, Xinjiang, China
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Jin J, Tang C, Sale P. The impact of elevated carbon dioxide on the phosphorus nutrition of plants: a review. Ann Bot 2015; 116:987-99. [PMID: 26113632 PMCID: PMC4640125 DOI: 10.1093/aob/mcv088] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Revised: 03/06/2015] [Accepted: 04/29/2015] [Indexed: 05/03/2023]
Abstract
BACKGROUND Increasing attention is being focused on the influence of rapid increases in atmospheric CO2 concentration on nutrient cycling in ecosystems. An understanding of how elevated CO2 affects plant utilization and acquisition of phosphorus (P) will be critical for P management to maintain ecosystem sustainability in P-deficient regions. SCOPE This review focuses on the impact of elevated CO2 on plant P demand, utilization in plants and P acquisition from soil. Several knowledge gaps on elevated CO2-P associations are highlighted. CONCLUSIONS Significant increases in P demand by plants are likely to happen under elevated CO2 due to the stimulation of photosynthesis, and subsequent growth responses. Elevated CO2 alters P acquisition through changes in root morphology and increases in rooting depth. Moreover, the quantity and composition of root exudates are likely to change under elevated CO2, due to the changes in carbon fluxes along the glycolytic pathway and the tricarboxylic acid cycle. As a consequence, these root exudates may lead to P mobilization by the chelation of P from sparingly soluble P complexes, by the alteration of the biochemical environment and by changes to microbial activity in the rhizosphere. Future research on chemical, molecular, microbiological and physiological aspects is needed to improve understanding of how elevated CO2 might affect the use and acquisition of P by plants.
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Affiliation(s)
- Jian Jin
- Centre for AgriBioscience, La Trobe University, Melbourne Campus, Bundoora, Vic. 3086, Australia and Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081, China
| | - Caixian Tang
- Centre for AgriBioscience, La Trobe University, Melbourne Campus, Bundoora, Vic. 3086, Australia and
| | - Peter Sale
- Centre for AgriBioscience, La Trobe University, Melbourne Campus, Bundoora, Vic. 3086, Australia and
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