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Differential Strategies to Tolerate Flooding in Polygonum hydropiper Plants Originating From Low- and High-Elevation Habitats

In species that occur over a wide range of flooding conditions, plant populations may have evolved divergent strategies as a consequence of long-term adaptation to local flooding conditions. In the present study, we investigated the effects of a flooding gradient on the growth and carbohydrate reser...

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Autores principales: Chen, Xin-Sheng, Li, Ya-Fang, Cai, Yun-He, Xie, Yong-Hong, Deng, Zheng-Miao, Li, Feng, Hou, Zhi-Yong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6333866/
https://www.ncbi.nlm.nih.gov/pubmed/30687365
http://dx.doi.org/10.3389/fpls.2018.01970
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author Chen, Xin-Sheng
Li, Ya-Fang
Cai, Yun-He
Xie, Yong-Hong
Deng, Zheng-Miao
Li, Feng
Hou, Zhi-Yong
author_facet Chen, Xin-Sheng
Li, Ya-Fang
Cai, Yun-He
Xie, Yong-Hong
Deng, Zheng-Miao
Li, Feng
Hou, Zhi-Yong
author_sort Chen, Xin-Sheng
collection PubMed
description In species that occur over a wide range of flooding conditions, plant populations may have evolved divergent strategies as a consequence of long-term adaptation to local flooding conditions. In the present study, we investigated the effects of a flooding gradient on the growth and carbohydrate reserves of Polygonum hydropiper plants originating from low- and high-elevation habitats in the Dongting Lake wetlands. The results indicated that shoot length did not differ, whereas the total biomass and carbohydrate reserves were reduced under flooded compared to well-drained conditions for plants originating from both habitat types. However, shoot length, shoot mass, rhizome mass, and total biomass were lower in plants from low-elevation habitats than in those from high-elevation habitats in the flooded condition. Soluble sugar and starch contents in belowground biomass were higher in plants from low-elevation habitats than in those from high-elevation habitats independently of the water level. Therefore, P. hydropiper plants from low-elevation habitats exhibit a lower growth rate and more conservative energy strategy to cope with flooding in comparison with plants from high-elevation habitats. Differential strategies to cope with flooding among P. hydropiper populations are most likely a response to the flooding pressures of the habitat of origin and may potentially drive ecotype differentiation within species along flooding gradients.
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spelling pubmed-63338662019-01-25 Differential Strategies to Tolerate Flooding in Polygonum hydropiper Plants Originating From Low- and High-Elevation Habitats Chen, Xin-Sheng Li, Ya-Fang Cai, Yun-He Xie, Yong-Hong Deng, Zheng-Miao Li, Feng Hou, Zhi-Yong Front Plant Sci Plant Science In species that occur over a wide range of flooding conditions, plant populations may have evolved divergent strategies as a consequence of long-term adaptation to local flooding conditions. In the present study, we investigated the effects of a flooding gradient on the growth and carbohydrate reserves of Polygonum hydropiper plants originating from low- and high-elevation habitats in the Dongting Lake wetlands. The results indicated that shoot length did not differ, whereas the total biomass and carbohydrate reserves were reduced under flooded compared to well-drained conditions for plants originating from both habitat types. However, shoot length, shoot mass, rhizome mass, and total biomass were lower in plants from low-elevation habitats than in those from high-elevation habitats in the flooded condition. Soluble sugar and starch contents in belowground biomass were higher in plants from low-elevation habitats than in those from high-elevation habitats independently of the water level. Therefore, P. hydropiper plants from low-elevation habitats exhibit a lower growth rate and more conservative energy strategy to cope with flooding in comparison with plants from high-elevation habitats. Differential strategies to cope with flooding among P. hydropiper populations are most likely a response to the flooding pressures of the habitat of origin and may potentially drive ecotype differentiation within species along flooding gradients. Frontiers Media S.A. 2019-01-09 /pmc/articles/PMC6333866/ /pubmed/30687365 http://dx.doi.org/10.3389/fpls.2018.01970 Text en Copyright © 2019 Chen, Li, Cai, Xie, Deng, Li and Hou. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Plant Science
Chen, Xin-Sheng
Li, Ya-Fang
Cai, Yun-He
Xie, Yong-Hong
Deng, Zheng-Miao
Li, Feng
Hou, Zhi-Yong
Differential Strategies to Tolerate Flooding in Polygonum hydropiper Plants Originating From Low- and High-Elevation Habitats
title Differential Strategies to Tolerate Flooding in Polygonum hydropiper Plants Originating From Low- and High-Elevation Habitats
title_full Differential Strategies to Tolerate Flooding in Polygonum hydropiper Plants Originating From Low- and High-Elevation Habitats
title_fullStr Differential Strategies to Tolerate Flooding in Polygonum hydropiper Plants Originating From Low- and High-Elevation Habitats
title_full_unstemmed Differential Strategies to Tolerate Flooding in Polygonum hydropiper Plants Originating From Low- and High-Elevation Habitats
title_short Differential Strategies to Tolerate Flooding in Polygonum hydropiper Plants Originating From Low- and High-Elevation Habitats
title_sort differential strategies to tolerate flooding in polygonum hydropiper plants originating from low- and high-elevation habitats
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6333866/
https://www.ncbi.nlm.nih.gov/pubmed/30687365
http://dx.doi.org/10.3389/fpls.2018.01970
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