Cargando…

Improved Utilization of Nitrate Nitrogen Through Within-Leaf Nitrogen Allocation Trade-Offs in Leymus chinensis

The Sharply increasing atmospheric nitrogen (N) deposition may substantially impact the N availability and photosynthetic capacity of terrestrial plants. Determining the trade-off relationship between within-leaf N sources and allocation is therefore critical for understanding the photosynthetic res...

Descripción completa

Detalles Bibliográficos
Autores principales: Wei, Xiaowei, Yang, Yuheng, Yao, Jialiang, Han, Jiayu, Yan, Ming, Zhang, Jinwei, Shi, Yujie, Wang, Junfeng, Mu, Chunsheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9096725/
https://www.ncbi.nlm.nih.gov/pubmed/35574094
http://dx.doi.org/10.3389/fpls.2022.870681
_version_ 1784706039805902848
author Wei, Xiaowei
Yang, Yuheng
Yao, Jialiang
Han, Jiayu
Yan, Ming
Zhang, Jinwei
Shi, Yujie
Wang, Junfeng
Mu, Chunsheng
author_facet Wei, Xiaowei
Yang, Yuheng
Yao, Jialiang
Han, Jiayu
Yan, Ming
Zhang, Jinwei
Shi, Yujie
Wang, Junfeng
Mu, Chunsheng
author_sort Wei, Xiaowei
collection PubMed
description The Sharply increasing atmospheric nitrogen (N) deposition may substantially impact the N availability and photosynthetic capacity of terrestrial plants. Determining the trade-off relationship between within-leaf N sources and allocation is therefore critical for understanding the photosynthetic response to nitrogen deposition in grassland ecosystems. We conducted field experiments to examine the effects of inorganic nitrogen addition (sole NH(4)(+), sole NO(3)(–) and mixed NH(4)(+)/NO(3)(–): 50%/50%) on N assimilation and allocation by Leymus chinensis. The leaf N allocated to the photosynthetic apparatus (N(PSN)) and chlorophyll content per unit area (Chl(area)) were significantly positively correlated with the photosynthetic N-use efficiency (PNUE). The sole NO(3)(–) treatment significantly increased the plant leaf PNUE and biomass by increasing the photosynthetic N allocation and Chl(area). Under the NO(3) treatment, L. chinensis plants devoted more N to their bioenergetics and light-harvesting systems to increase electron transfer. Plants reduced the cell wall N allocation or increased their soluble protein concentrations to balance growth and defense under the NO(3) treatment. In the sole NH(4)(+) treatment, however, plants decreased their N allocation to photosynthetic components, but increased their N allocation to the cell wall and elsewhere. Our findings demonstrated that within-leaf N allocation optimization is a key adaptive mechanism by which plants maximize their PNUE and biomass under predicted future global changes.
format Online
Article
Text
id pubmed-9096725
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher Frontiers Media S.A.
record_format MEDLINE/PubMed
spelling pubmed-90967252022-05-13 Improved Utilization of Nitrate Nitrogen Through Within-Leaf Nitrogen Allocation Trade-Offs in Leymus chinensis Wei, Xiaowei Yang, Yuheng Yao, Jialiang Han, Jiayu Yan, Ming Zhang, Jinwei Shi, Yujie Wang, Junfeng Mu, Chunsheng Front Plant Sci Plant Science The Sharply increasing atmospheric nitrogen (N) deposition may substantially impact the N availability and photosynthetic capacity of terrestrial plants. Determining the trade-off relationship between within-leaf N sources and allocation is therefore critical for understanding the photosynthetic response to nitrogen deposition in grassland ecosystems. We conducted field experiments to examine the effects of inorganic nitrogen addition (sole NH(4)(+), sole NO(3)(–) and mixed NH(4)(+)/NO(3)(–): 50%/50%) on N assimilation and allocation by Leymus chinensis. The leaf N allocated to the photosynthetic apparatus (N(PSN)) and chlorophyll content per unit area (Chl(area)) were significantly positively correlated with the photosynthetic N-use efficiency (PNUE). The sole NO(3)(–) treatment significantly increased the plant leaf PNUE and biomass by increasing the photosynthetic N allocation and Chl(area). Under the NO(3) treatment, L. chinensis plants devoted more N to their bioenergetics and light-harvesting systems to increase electron transfer. Plants reduced the cell wall N allocation or increased their soluble protein concentrations to balance growth and defense under the NO(3) treatment. In the sole NH(4)(+) treatment, however, plants decreased their N allocation to photosynthetic components, but increased their N allocation to the cell wall and elsewhere. Our findings demonstrated that within-leaf N allocation optimization is a key adaptive mechanism by which plants maximize their PNUE and biomass under predicted future global changes. Frontiers Media S.A. 2022-04-28 /pmc/articles/PMC9096725/ /pubmed/35574094 http://dx.doi.org/10.3389/fpls.2022.870681 Text en Copyright © 2022 Wei, Yang, Yao, Han, Yan, Zhang, Shi, Wang and Mu. https://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
Wei, Xiaowei
Yang, Yuheng
Yao, Jialiang
Han, Jiayu
Yan, Ming
Zhang, Jinwei
Shi, Yujie
Wang, Junfeng
Mu, Chunsheng
Improved Utilization of Nitrate Nitrogen Through Within-Leaf Nitrogen Allocation Trade-Offs in Leymus chinensis
title Improved Utilization of Nitrate Nitrogen Through Within-Leaf Nitrogen Allocation Trade-Offs in Leymus chinensis
title_full Improved Utilization of Nitrate Nitrogen Through Within-Leaf Nitrogen Allocation Trade-Offs in Leymus chinensis
title_fullStr Improved Utilization of Nitrate Nitrogen Through Within-Leaf Nitrogen Allocation Trade-Offs in Leymus chinensis
title_full_unstemmed Improved Utilization of Nitrate Nitrogen Through Within-Leaf Nitrogen Allocation Trade-Offs in Leymus chinensis
title_short Improved Utilization of Nitrate Nitrogen Through Within-Leaf Nitrogen Allocation Trade-Offs in Leymus chinensis
title_sort improved utilization of nitrate nitrogen through within-leaf nitrogen allocation trade-offs in leymus chinensis
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9096725/
https://www.ncbi.nlm.nih.gov/pubmed/35574094
http://dx.doi.org/10.3389/fpls.2022.870681
work_keys_str_mv AT weixiaowei improvedutilizationofnitratenitrogenthroughwithinleafnitrogenallocationtradeoffsinleymuschinensis
AT yangyuheng improvedutilizationofnitratenitrogenthroughwithinleafnitrogenallocationtradeoffsinleymuschinensis
AT yaojialiang improvedutilizationofnitratenitrogenthroughwithinleafnitrogenallocationtradeoffsinleymuschinensis
AT hanjiayu improvedutilizationofnitratenitrogenthroughwithinleafnitrogenallocationtradeoffsinleymuschinensis
AT yanming improvedutilizationofnitratenitrogenthroughwithinleafnitrogenallocationtradeoffsinleymuschinensis
AT zhangjinwei improvedutilizationofnitratenitrogenthroughwithinleafnitrogenallocationtradeoffsinleymuschinensis
AT shiyujie improvedutilizationofnitratenitrogenthroughwithinleafnitrogenallocationtradeoffsinleymuschinensis
AT wangjunfeng improvedutilizationofnitratenitrogenthroughwithinleafnitrogenallocationtradeoffsinleymuschinensis
AT muchunsheng improvedutilizationofnitratenitrogenthroughwithinleafnitrogenallocationtradeoffsinleymuschinensis