Cargando…
Decrease in the Photosynthetic Performance of Temperate Grassland Species Does Not Lead to a Decline in the Gross Primary Production of the Ecosystem
Plants, under stressful conditions, can proceed to photosynthetic adjustments in order to acclimatize and alleviate the detrimental impacts on the photosynthetic apparatus. However, it is currently unclear how adjustment of photosynthetic processes under environmental constraints by plants influence...
Autores principales: | , , , , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2018
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5807415/ https://www.ncbi.nlm.nih.gov/pubmed/29459875 http://dx.doi.org/10.3389/fpls.2018.00067 |
_version_ | 1783299260618375168 |
---|---|
author | Digrado, Anthony de la Motte, Louis G. Bachy, Aurélie Mozaffar, Ahsan Schoon, Niels Bussotti, Filippo Amelynck, Crist Dalcq, Anne-Catherine Fauconnier, Marie-Laure Aubinet, Marc Heinesch, Bernard du Jardin, Patrick Delaplace, Pierre |
author_facet | Digrado, Anthony de la Motte, Louis G. Bachy, Aurélie Mozaffar, Ahsan Schoon, Niels Bussotti, Filippo Amelynck, Crist Dalcq, Anne-Catherine Fauconnier, Marie-Laure Aubinet, Marc Heinesch, Bernard du Jardin, Patrick Delaplace, Pierre |
author_sort | Digrado, Anthony |
collection | PubMed |
description | Plants, under stressful conditions, can proceed to photosynthetic adjustments in order to acclimatize and alleviate the detrimental impacts on the photosynthetic apparatus. However, it is currently unclear how adjustment of photosynthetic processes under environmental constraints by plants influences CO(2) gas exchange at the ecosystem-scale. Over a 2-year period, photosynthetic performance of a temperate grassland ecosystem was characterized by conducting frequent chlorophyll fluorescence (ChlF) measurements on three primary grassland species (Lolium perenne L., Taraxacum sp., and Trifolium repens L.). Ecosystem photosynthetic performance was estimated from measurements performed on the three dominant grassland species weighed based on their relative abundance. In addition, monitoring CO(2) fluxes was performed by eddy covariance. The highest decrease in photosynthetic performance was detected in summer, when environmental constraints were combined. Dicot species (Taraxacum sp. and T. repens) presented the strongest capacity to up-regulate PSI and exhibited the highest electron transport efficiency under stressful environmental conditions compared with L. perenne. The decline in ecosystem photosynthetic performance did not lead to a reduction in gross primary productivity, likely because increased light energy was available under these conditions. The carbon amounts fixed at light saturation were not influenced by alterations in photosynthetic processes, suggesting photosynthesis was not impaired. Decreased photosynthetic performance was associated with high respiration flux, but both were influenced by temperature. Our study revealed variation in photosynthetic performance of a grassland ecosystem responded to environmental constraints, but alterations in photosynthetic processes appeared to exhibit a negligible influence on ecosystem CO(2) fluxes. |
format | Online Article Text |
id | pubmed-5807415 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-58074152018-02-19 Decrease in the Photosynthetic Performance of Temperate Grassland Species Does Not Lead to a Decline in the Gross Primary Production of the Ecosystem Digrado, Anthony de la Motte, Louis G. Bachy, Aurélie Mozaffar, Ahsan Schoon, Niels Bussotti, Filippo Amelynck, Crist Dalcq, Anne-Catherine Fauconnier, Marie-Laure Aubinet, Marc Heinesch, Bernard du Jardin, Patrick Delaplace, Pierre Front Plant Sci Plant Science Plants, under stressful conditions, can proceed to photosynthetic adjustments in order to acclimatize and alleviate the detrimental impacts on the photosynthetic apparatus. However, it is currently unclear how adjustment of photosynthetic processes under environmental constraints by plants influences CO(2) gas exchange at the ecosystem-scale. Over a 2-year period, photosynthetic performance of a temperate grassland ecosystem was characterized by conducting frequent chlorophyll fluorescence (ChlF) measurements on three primary grassland species (Lolium perenne L., Taraxacum sp., and Trifolium repens L.). Ecosystem photosynthetic performance was estimated from measurements performed on the three dominant grassland species weighed based on their relative abundance. In addition, monitoring CO(2) fluxes was performed by eddy covariance. The highest decrease in photosynthetic performance was detected in summer, when environmental constraints were combined. Dicot species (Taraxacum sp. and T. repens) presented the strongest capacity to up-regulate PSI and exhibited the highest electron transport efficiency under stressful environmental conditions compared with L. perenne. The decline in ecosystem photosynthetic performance did not lead to a reduction in gross primary productivity, likely because increased light energy was available under these conditions. The carbon amounts fixed at light saturation were not influenced by alterations in photosynthetic processes, suggesting photosynthesis was not impaired. Decreased photosynthetic performance was associated with high respiration flux, but both were influenced by temperature. Our study revealed variation in photosynthetic performance of a grassland ecosystem responded to environmental constraints, but alterations in photosynthetic processes appeared to exhibit a negligible influence on ecosystem CO(2) fluxes. Frontiers Media S.A. 2018-02-05 /pmc/articles/PMC5807415/ /pubmed/29459875 http://dx.doi.org/10.3389/fpls.2018.00067 Text en Copyright © 2018 Digrado, de la Motte, Bachy, Mozaffar, Schoon, Bussotti, Amelynck, Dalcq, Fauconnier, Aubinet, Heinesch, du Jardin and Delaplace. 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 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 Digrado, Anthony de la Motte, Louis G. Bachy, Aurélie Mozaffar, Ahsan Schoon, Niels Bussotti, Filippo Amelynck, Crist Dalcq, Anne-Catherine Fauconnier, Marie-Laure Aubinet, Marc Heinesch, Bernard du Jardin, Patrick Delaplace, Pierre Decrease in the Photosynthetic Performance of Temperate Grassland Species Does Not Lead to a Decline in the Gross Primary Production of the Ecosystem |
title | Decrease in the Photosynthetic Performance of Temperate Grassland Species Does Not Lead to a Decline in the Gross Primary Production of the Ecosystem |
title_full | Decrease in the Photosynthetic Performance of Temperate Grassland Species Does Not Lead to a Decline in the Gross Primary Production of the Ecosystem |
title_fullStr | Decrease in the Photosynthetic Performance of Temperate Grassland Species Does Not Lead to a Decline in the Gross Primary Production of the Ecosystem |
title_full_unstemmed | Decrease in the Photosynthetic Performance of Temperate Grassland Species Does Not Lead to a Decline in the Gross Primary Production of the Ecosystem |
title_short | Decrease in the Photosynthetic Performance of Temperate Grassland Species Does Not Lead to a Decline in the Gross Primary Production of the Ecosystem |
title_sort | decrease in the photosynthetic performance of temperate grassland species does not lead to a decline in the gross primary production of the ecosystem |
topic | Plant Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5807415/ https://www.ncbi.nlm.nih.gov/pubmed/29459875 http://dx.doi.org/10.3389/fpls.2018.00067 |
work_keys_str_mv | AT digradoanthony decreaseinthephotosyntheticperformanceoftemperategrasslandspeciesdoesnotleadtoadeclineinthegrossprimaryproductionoftheecosystem AT delamottelouisg decreaseinthephotosyntheticperformanceoftemperategrasslandspeciesdoesnotleadtoadeclineinthegrossprimaryproductionoftheecosystem AT bachyaurelie decreaseinthephotosyntheticperformanceoftemperategrasslandspeciesdoesnotleadtoadeclineinthegrossprimaryproductionoftheecosystem AT mozaffarahsan decreaseinthephotosyntheticperformanceoftemperategrasslandspeciesdoesnotleadtoadeclineinthegrossprimaryproductionoftheecosystem AT schoonniels decreaseinthephotosyntheticperformanceoftemperategrasslandspeciesdoesnotleadtoadeclineinthegrossprimaryproductionoftheecosystem AT bussottifilippo decreaseinthephotosyntheticperformanceoftemperategrasslandspeciesdoesnotleadtoadeclineinthegrossprimaryproductionoftheecosystem AT amelynckcrist decreaseinthephotosyntheticperformanceoftemperategrasslandspeciesdoesnotleadtoadeclineinthegrossprimaryproductionoftheecosystem AT dalcqannecatherine decreaseinthephotosyntheticperformanceoftemperategrasslandspeciesdoesnotleadtoadeclineinthegrossprimaryproductionoftheecosystem AT fauconniermarielaure decreaseinthephotosyntheticperformanceoftemperategrasslandspeciesdoesnotleadtoadeclineinthegrossprimaryproductionoftheecosystem AT aubinetmarc decreaseinthephotosyntheticperformanceoftemperategrasslandspeciesdoesnotleadtoadeclineinthegrossprimaryproductionoftheecosystem AT heineschbernard decreaseinthephotosyntheticperformanceoftemperategrasslandspeciesdoesnotleadtoadeclineinthegrossprimaryproductionoftheecosystem AT dujardinpatrick decreaseinthephotosyntheticperformanceoftemperategrasslandspeciesdoesnotleadtoadeclineinthegrossprimaryproductionoftheecosystem AT delaplacepierre decreaseinthephotosyntheticperformanceoftemperategrasslandspeciesdoesnotleadtoadeclineinthegrossprimaryproductionoftheecosystem |