Plant facilitation shifts along with soil moisture and phosphorus gradients via rhizosphere interaction in the maize-grass pea intercropping system
Plant-plant facilitation is widely studied to increase productivity and resource utilization in cereal-legume intercropping system. However, physiological and ecological mechanisms driving interspecific interaction shift along the environmental gradients is largely unknown. To clarify this issue, we...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-06-01
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| Series: | Ecological Indicators |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X22003727 |
| _version_ | 1818552340432551936 |
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| author | Shuang-Guo Zhu Zheng-Guo Cheng Asfa Batool Yi-Bo Wang Jing Wang Rui Zhou Aziz Khan Sai-Yong Zhu Yu-Miao Yang Wei Wang Hao Zhu Bao-Zhong Wang Hong-Yan Tao You-Cai Xiong |
| author_facet | Shuang-Guo Zhu Zheng-Guo Cheng Asfa Batool Yi-Bo Wang Jing Wang Rui Zhou Aziz Khan Sai-Yong Zhu Yu-Miao Yang Wei Wang Hao Zhu Bao-Zhong Wang Hong-Yan Tao You-Cai Xiong |
| author_sort | Shuang-Guo Zhu |
| collection | DOAJ |
| description | Plant-plant facilitation is widely studied to increase productivity and resource utilization in cereal-legume intercropping system. However, physiological and ecological mechanisms driving interspecific interaction shift along the environmental gradients is largely unknown. To clarify this issue, we first tested plant-plant facilitation along with four phosphorus (P) gradients in maize-grass pea intercropping system. Results illustrated a progressive transition of seed yield-based facilitation from mutually facilitated (+/+) to maize facilitated but grass pea as facilitator (+/-) along with low to high P gradients. Secondly, above trend was evidently enhanced when combining with drought stress gradients, in which severe drought amplified facilitative effects, whereas the magnitude of facilitation was relatively weak under well-watered condition. Interestingly, biomass-based facilitation transition did not synchronize with seed-based one, in which occurred in a broader threshold range of water and P gradients. Specifically, total yield, biomass, N and P uptake increased by 0.5%, 4.1%, 1.8% and 2.9% under the sufficient P and water availability, whereas these indicators increased by 25.3%, 18.5%, 20.5% and 21.4% in P and water deficient soils. And the total net effect was positive under all the environmental conditions. Rhizosphere interaction plays a crucial role in facilitation judgment, and the driving mechanism was associated with soil acidification and microbial community promotion under P-deficient condition. Under low soil moisture and available P, soil acidification and lower rhizosphere soil pH of intercropped maize were observed. Rhizosphere phosphatase secretion were significantly activated in P-deficient soils and accelerated the mineralization of soil organophosphorus, and the microbial biomass P was improved for stronger facilitation. Taken together, our findings confirmed the P and water driven facilitation shift along with stress gradients and highlighted the roles of rhizosphere interaction in affecting species diversity advantage. In conclusion, our work provided a relatively full picture for plant facilitation evaluation and more accurate management regarding intercropping productivity. |
| first_indexed | 2024-12-12T09:11:55Z |
| format | Article |
| id | doaj.art-d5049aea6c364c3fa59cfdce564e051f |
| institution | Directory Open Access Journal |
| issn | 1470-160X |
| language | English |
| last_indexed | 2024-12-12T09:11:55Z |
| publishDate | 2022-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj.art-d5049aea6c364c3fa59cfdce564e051f2022-12-22T00:29:30ZengElsevierEcological Indicators1470-160X2022-06-01139108901Plant facilitation shifts along with soil moisture and phosphorus gradients via rhizosphere interaction in the maize-grass pea intercropping systemShuang-Guo Zhu0Zheng-Guo Cheng1Asfa Batool2Yi-Bo Wang3Jing Wang4Rui Zhou5Aziz Khan6Sai-Yong Zhu7Yu-Miao Yang8Wei Wang9Hao Zhu10Bao-Zhong Wang11Hong-Yan Tao12You-Cai Xiong13State Key Laboratory of Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaGansu Key Laboratory of Resource Utilization of Agricultural Solid Wastes, Tianshui Normal University, Tianshui 741000, ChinaState Key Laboratory of Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China; Gansu Key Laboratory of Resource Utilization of Agricultural Solid Wastes, Tianshui Normal University, Tianshui 741000, ChinaSchool of Ecology and Environmental Science, Yunnan University, Kunming 650091, ChinaState Key Laboratory of Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, ChinaState Key Laboratory of Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000, China; Corresponding author.Plant-plant facilitation is widely studied to increase productivity and resource utilization in cereal-legume intercropping system. However, physiological and ecological mechanisms driving interspecific interaction shift along the environmental gradients is largely unknown. To clarify this issue, we first tested plant-plant facilitation along with four phosphorus (P) gradients in maize-grass pea intercropping system. Results illustrated a progressive transition of seed yield-based facilitation from mutually facilitated (+/+) to maize facilitated but grass pea as facilitator (+/-) along with low to high P gradients. Secondly, above trend was evidently enhanced when combining with drought stress gradients, in which severe drought amplified facilitative effects, whereas the magnitude of facilitation was relatively weak under well-watered condition. Interestingly, biomass-based facilitation transition did not synchronize with seed-based one, in which occurred in a broader threshold range of water and P gradients. Specifically, total yield, biomass, N and P uptake increased by 0.5%, 4.1%, 1.8% and 2.9% under the sufficient P and water availability, whereas these indicators increased by 25.3%, 18.5%, 20.5% and 21.4% in P and water deficient soils. And the total net effect was positive under all the environmental conditions. Rhizosphere interaction plays a crucial role in facilitation judgment, and the driving mechanism was associated with soil acidification and microbial community promotion under P-deficient condition. Under low soil moisture and available P, soil acidification and lower rhizosphere soil pH of intercropped maize were observed. Rhizosphere phosphatase secretion were significantly activated in P-deficient soils and accelerated the mineralization of soil organophosphorus, and the microbial biomass P was improved for stronger facilitation. Taken together, our findings confirmed the P and water driven facilitation shift along with stress gradients and highlighted the roles of rhizosphere interaction in affecting species diversity advantage. In conclusion, our work provided a relatively full picture for plant facilitation evaluation and more accurate management regarding intercropping productivity.http://www.sciencedirect.com/science/article/pii/S1470160X22003727CompetitionBiodiversityProductivityEnvironmental gradientsPhosphatase |
| spellingShingle | Shuang-Guo Zhu Zheng-Guo Cheng Asfa Batool Yi-Bo Wang Jing Wang Rui Zhou Aziz Khan Sai-Yong Zhu Yu-Miao Yang Wei Wang Hao Zhu Bao-Zhong Wang Hong-Yan Tao You-Cai Xiong Plant facilitation shifts along with soil moisture and phosphorus gradients via rhizosphere interaction in the maize-grass pea intercropping system Ecological Indicators Competition Biodiversity Productivity Environmental gradients Phosphatase |
| title | Plant facilitation shifts along with soil moisture and phosphorus gradients via rhizosphere interaction in the maize-grass pea intercropping system |
| title_full | Plant facilitation shifts along with soil moisture and phosphorus gradients via rhizosphere interaction in the maize-grass pea intercropping system |
| title_fullStr | Plant facilitation shifts along with soil moisture and phosphorus gradients via rhizosphere interaction in the maize-grass pea intercropping system |
| title_full_unstemmed | Plant facilitation shifts along with soil moisture and phosphorus gradients via rhizosphere interaction in the maize-grass pea intercropping system |
| title_short | Plant facilitation shifts along with soil moisture and phosphorus gradients via rhizosphere interaction in the maize-grass pea intercropping system |
| title_sort | plant facilitation shifts along with soil moisture and phosphorus gradients via rhizosphere interaction in the maize grass pea intercropping system |
| topic | Competition Biodiversity Productivity Environmental gradients Phosphatase |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X22003727 |
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