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Nitrogen Can Alleviate the Inhibition of Photosynthesis Caused by High Temperature Stress under Both Steady-State and Flecked Irradiance
Nitrogen is one of the most important elements for plants and is closely related to photosynthesis. High temperature stress significantly inhibits photosynthesis under both steady-state and flecked irradiance. However, it is not known whether nitrogen can affect the decrease in photosynthesis caused...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5459896/ https://www.ncbi.nlm.nih.gov/pubmed/28634485 http://dx.doi.org/10.3389/fpls.2017.00945 |
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author | Huang, Guanjun Zhang, Qiangqiang Wei, Xinghai Peng, Shaobing Li, Yong |
author_facet | Huang, Guanjun Zhang, Qiangqiang Wei, Xinghai Peng, Shaobing Li, Yong |
author_sort | Huang, Guanjun |
collection | PubMed |
description | Nitrogen is one of the most important elements for plants and is closely related to photosynthesis. High temperature stress significantly inhibits photosynthesis under both steady-state and flecked irradiance. However, it is not known whether nitrogen can affect the decrease in photosynthesis caused by high temperature, especially under flecked irradiance. In the present study, a pot experiment was conducted under two nitrogen (N) supplies with rice plants, and the steady-state and dynamic photosynthesis rates were measured under 28 and 40°C. High temperature significantly increased leaf hydraulic conductance (K(leaf)) under high N supply (HN) but not under low N supply (LN). The increased K(leaf) maintained a constant leaf water potential (Ψ(leaf)) and steady-state stomatal conductance (g(s,sat)) under HN, while the Ψ(leaf) and g(s,sat) significantly decreased under high temperature in LN conditions. This resulted in a more severe decrease in steady-state photosynthesis (A(sat)) under high temperature in the LN conditions. After shifting from low to high light, high temperature significantly delayed the recovery of photosynthesis, which resulted in more carbon loss under flecked irradiance. These effects were obtained under HN to a lesser extent than under LN supply. Therefore, it is concluded that nitrogen can alleviate the inhibition of photosynthesis caused by high temperature stress under both steady-state and flecked irradiance. |
format | Online Article Text |
id | pubmed-5459896 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-54598962017-06-20 Nitrogen Can Alleviate the Inhibition of Photosynthesis Caused by High Temperature Stress under Both Steady-State and Flecked Irradiance Huang, Guanjun Zhang, Qiangqiang Wei, Xinghai Peng, Shaobing Li, Yong Front Plant Sci Plant Science Nitrogen is one of the most important elements for plants and is closely related to photosynthesis. High temperature stress significantly inhibits photosynthesis under both steady-state and flecked irradiance. However, it is not known whether nitrogen can affect the decrease in photosynthesis caused by high temperature, especially under flecked irradiance. In the present study, a pot experiment was conducted under two nitrogen (N) supplies with rice plants, and the steady-state and dynamic photosynthesis rates were measured under 28 and 40°C. High temperature significantly increased leaf hydraulic conductance (K(leaf)) under high N supply (HN) but not under low N supply (LN). The increased K(leaf) maintained a constant leaf water potential (Ψ(leaf)) and steady-state stomatal conductance (g(s,sat)) under HN, while the Ψ(leaf) and g(s,sat) significantly decreased under high temperature in LN conditions. This resulted in a more severe decrease in steady-state photosynthesis (A(sat)) under high temperature in the LN conditions. After shifting from low to high light, high temperature significantly delayed the recovery of photosynthesis, which resulted in more carbon loss under flecked irradiance. These effects were obtained under HN to a lesser extent than under LN supply. Therefore, it is concluded that nitrogen can alleviate the inhibition of photosynthesis caused by high temperature stress under both steady-state and flecked irradiance. Frontiers Media S.A. 2017-06-06 /pmc/articles/PMC5459896/ /pubmed/28634485 http://dx.doi.org/10.3389/fpls.2017.00945 Text en Copyright © 2017 Huang, Zhang, Wei, Peng and Li. 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) or licensor 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 Huang, Guanjun Zhang, Qiangqiang Wei, Xinghai Peng, Shaobing Li, Yong Nitrogen Can Alleviate the Inhibition of Photosynthesis Caused by High Temperature Stress under Both Steady-State and Flecked Irradiance |
title | Nitrogen Can Alleviate the Inhibition of Photosynthesis Caused by High Temperature Stress under Both Steady-State and Flecked Irradiance |
title_full | Nitrogen Can Alleviate the Inhibition of Photosynthesis Caused by High Temperature Stress under Both Steady-State and Flecked Irradiance |
title_fullStr | Nitrogen Can Alleviate the Inhibition of Photosynthesis Caused by High Temperature Stress under Both Steady-State and Flecked Irradiance |
title_full_unstemmed | Nitrogen Can Alleviate the Inhibition of Photosynthesis Caused by High Temperature Stress under Both Steady-State and Flecked Irradiance |
title_short | Nitrogen Can Alleviate the Inhibition of Photosynthesis Caused by High Temperature Stress under Both Steady-State and Flecked Irradiance |
title_sort | nitrogen can alleviate the inhibition of photosynthesis caused by high temperature stress under both steady-state and flecked irradiance |
topic | Plant Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5459896/ https://www.ncbi.nlm.nih.gov/pubmed/28634485 http://dx.doi.org/10.3389/fpls.2017.00945 |
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