Groundwater Depths Affect Phosphorus and Potassium Resorption but Not Their Utilization in a Desert Phreatophyte in Its Hyper-Arid Environment
Nutrients are vital for plant subsistence and growth in nutrient-poor and arid ecosystems. The deep roots of phreatophytic plants are necessary to access groundwater, which is the major source of nutrients for phreatophytes in an arid desert ecosystem. However, the mechanisms through which changes i...
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Frontiers Media S.A.
2021-06-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2021.665168/full |
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| author | Bo Zhang Bo Zhang Bo Zhang Gangliang Tang Gangliang Tang Hui Yin Hui Yin Shenglong Zhao Muhammad Shareef Muhammad Shareef Bo Liu Xiaopeng Gao Fanjiang Zeng Fanjiang Zeng Fanjiang Zeng |
| author_facet | Bo Zhang Bo Zhang Bo Zhang Gangliang Tang Gangliang Tang Hui Yin Hui Yin Shenglong Zhao Muhammad Shareef Muhammad Shareef Bo Liu Xiaopeng Gao Fanjiang Zeng Fanjiang Zeng Fanjiang Zeng |
| author_sort | Bo Zhang |
| collection | DOAJ |
| description | Nutrients are vital for plant subsistence and growth in nutrient-poor and arid ecosystems. The deep roots of phreatophytic plants are necessary to access groundwater, which is the major source of nutrients for phreatophytes in an arid desert ecosystem. However, the mechanisms through which changes in groundwater depth affect nutrient cycles of phreatophytic plants are still poorly understood. This study was performed to reveal the adaptive strategies involving the nutrient use efficiency (NUE) and nutrient resorption efficiency (NRE) of desert phreatophytes as affected by different groundwater depths. This work investigated the nitrogen (N), phosphorus (P), and potassium (K) concentrations in leaf, stem, and assimilating branch, as well as the NUE and NRE of the phreatophytic Alhagi sparsifolia. The plant was grown at groundwater depths of 2.5, 4.5, and 11.0 m during 2015 and 2016 in a desert-oasis transition ecotone at the southern rim of the Taklimakan Desert in northwestern China. Results show that the leaf, stem, and assimilating branch P concentrations of A. sparsifolia at 4.5 m groundwater depth were significantly lower than those at 2.5 and 11.0 m groundwater depths. The K concentrations in different tissues of A. sparsifolia at 4.5 m groundwater depth were significantly higher than those at 2.5 and 11.0 m groundwater depths. Conversely, the NRE of P in A. sparsifolia was the highest among the three groundwater depths, while that of K in A. sparsifolia was the lowest among the three groundwater depths in 2015 and 2016. The N concentration and NUE of N, P, and K in A. sparsifolia, however, were not influenced by groundwater depth. Further analyses using structural equation models showed that groundwater depth had significant effects on the P and K resorption of A. sparsifolia by changing soil P and senescent leaf K concentrations. Overall, our results suggest groundwater depths affect P and K concentrations and resorption but not their utilization in a desert phreatophyte in its hyper-arid environment. This study provides a new insight into the phreatophytic plant nutrient cycle strategy under a changing external environment in a hyper-arid ecosystem. |
| first_indexed | 2024-12-22T03:06:00Z |
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| institution | Directory Open Access Journal |
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| last_indexed | 2024-12-22T03:06:00Z |
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| spelling | doaj.art-016f924af6b2431f94f5b414114ad6442022-12-21T18:41:03ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2021-06-011210.3389/fpls.2021.665168665168Groundwater Depths Affect Phosphorus and Potassium Resorption but Not Their Utilization in a Desert Phreatophyte in Its Hyper-Arid EnvironmentBo Zhang0Bo Zhang1Bo Zhang2Gangliang Tang3Gangliang Tang4Hui Yin5Hui Yin6Shenglong Zhao7Muhammad Shareef8Muhammad Shareef9Bo Liu10Xiaopeng Gao11Fanjiang Zeng12Fanjiang Zeng13Fanjiang Zeng14Xinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, ChinaNational Engineering Technology Research Center for Desert-Oasis Ecological Construction, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, ChinaCele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele, Xinjiang, ChinaXinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, ChinaCele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele, Xinjiang, ChinaXinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, ChinaCele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele, Xinjiang, ChinaNorthwest Institute of Eco-Environment and Resources, Academy of Science, Lanzhou, ChinaXinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, ChinaCele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele, Xinjiang, ChinaCollege of Resources and Environment, Linyi University, Linyi, ChinaDepartment of Soil Science, University of Manitoba, Winnipeg, MB, CanadaXinjiang Key Laboratory of Desert Plant Roots Ecology and Vegetation Restoration, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, ChinaCele National Station of Observation and Research for Desert-Grassland Ecosystems, Cele, Xinjiang, ChinaState Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, ChinaNutrients are vital for plant subsistence and growth in nutrient-poor and arid ecosystems. The deep roots of phreatophytic plants are necessary to access groundwater, which is the major source of nutrients for phreatophytes in an arid desert ecosystem. However, the mechanisms through which changes in groundwater depth affect nutrient cycles of phreatophytic plants are still poorly understood. This study was performed to reveal the adaptive strategies involving the nutrient use efficiency (NUE) and nutrient resorption efficiency (NRE) of desert phreatophytes as affected by different groundwater depths. This work investigated the nitrogen (N), phosphorus (P), and potassium (K) concentrations in leaf, stem, and assimilating branch, as well as the NUE and NRE of the phreatophytic Alhagi sparsifolia. The plant was grown at groundwater depths of 2.5, 4.5, and 11.0 m during 2015 and 2016 in a desert-oasis transition ecotone at the southern rim of the Taklimakan Desert in northwestern China. Results show that the leaf, stem, and assimilating branch P concentrations of A. sparsifolia at 4.5 m groundwater depth were significantly lower than those at 2.5 and 11.0 m groundwater depths. The K concentrations in different tissues of A. sparsifolia at 4.5 m groundwater depth were significantly higher than those at 2.5 and 11.0 m groundwater depths. Conversely, the NRE of P in A. sparsifolia was the highest among the three groundwater depths, while that of K in A. sparsifolia was the lowest among the three groundwater depths in 2015 and 2016. The N concentration and NUE of N, P, and K in A. sparsifolia, however, were not influenced by groundwater depth. Further analyses using structural equation models showed that groundwater depth had significant effects on the P and K resorption of A. sparsifolia by changing soil P and senescent leaf K concentrations. Overall, our results suggest groundwater depths affect P and K concentrations and resorption but not their utilization in a desert phreatophyte in its hyper-arid environment. This study provides a new insight into the phreatophytic plant nutrient cycle strategy under a changing external environment in a hyper-arid ecosystem.https://www.frontiersin.org/articles/10.3389/fpls.2021.665168/fullnutrient resorptionAlhagi sparsifoliagroundwater tableinternal nutrient cyclingdesert ecosystem |
| spellingShingle | Bo Zhang Bo Zhang Bo Zhang Gangliang Tang Gangliang Tang Hui Yin Hui Yin Shenglong Zhao Muhammad Shareef Muhammad Shareef Bo Liu Xiaopeng Gao Fanjiang Zeng Fanjiang Zeng Fanjiang Zeng Groundwater Depths Affect Phosphorus and Potassium Resorption but Not Their Utilization in a Desert Phreatophyte in Its Hyper-Arid Environment Frontiers in Plant Science nutrient resorption Alhagi sparsifolia groundwater table internal nutrient cycling desert ecosystem |
| title | Groundwater Depths Affect Phosphorus and Potassium Resorption but Not Their Utilization in a Desert Phreatophyte in Its Hyper-Arid Environment |
| title_full | Groundwater Depths Affect Phosphorus and Potassium Resorption but Not Their Utilization in a Desert Phreatophyte in Its Hyper-Arid Environment |
| title_fullStr | Groundwater Depths Affect Phosphorus and Potassium Resorption but Not Their Utilization in a Desert Phreatophyte in Its Hyper-Arid Environment |
| title_full_unstemmed | Groundwater Depths Affect Phosphorus and Potassium Resorption but Not Their Utilization in a Desert Phreatophyte in Its Hyper-Arid Environment |
| title_short | Groundwater Depths Affect Phosphorus and Potassium Resorption but Not Their Utilization in a Desert Phreatophyte in Its Hyper-Arid Environment |
| title_sort | groundwater depths affect phosphorus and potassium resorption but not their utilization in a desert phreatophyte in its hyper arid environment |
| topic | nutrient resorption Alhagi sparsifolia groundwater table internal nutrient cycling desert ecosystem |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2021.665168/full |
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