Fungal Endophytes Exert Positive Effects on Colobanthus quitensis Under Water Stress but Neutral Under a Projected Climate Change Scenario in Antarctica
Functional symbiosis is considered one of the successful mechanisms by which plants that inhabit extreme environment improve their ability to tolerate different types of stress. One of the most conspicuous type of symbiosis is the endophyticism. This interaction has been noted to play a role in the...
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ftdoajarticles:oai:doaj.org/article:4fc0506ead4440849bdb44d2ae8d6b0f 2023-05-15T13:54:33+02:00 Fungal Endophytes Exert Positive Effects on Colobanthus quitensis Under Water Stress but Neutral Under a Projected Climate Change Scenario in Antarctica Rasme Hereme Samuel Morales-Navarro Gabriel Ballesteros Andrea Barrera Patricio Ramos Pedro E. Gundel Marco A. Molina-Montenegro 2020-02-01T00:00:00Z https://doi.org/10.3389/fmicb.2020.00264 https://doaj.org/article/4fc0506ead4440849bdb44d2ae8d6b0f EN eng Frontiers Media S.A. https://www.frontiersin.org/article/10.3389/fmicb.2020.00264/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2020.00264 https://doaj.org/article/4fc0506ead4440849bdb44d2ae8d6b0f Frontiers in Microbiology, Vol 11 (2020) functional symbiosis Antarctica climate change Colobanthus quitensis osmoprotective molecules water stress Microbiology QR1-502 article 2020 ftdoajarticles https://doi.org/10.3389/fmicb.2020.00264 2022-12-31T03:16:29Z Functional symbiosis is considered one of the successful mechanisms by which plants that inhabit extreme environment improve their ability to tolerate different types of stress. One of the most conspicuous type of symbiosis is the endophyticism. This interaction has been noted to play a role in the adaptation of the native vascular plant Colobanthus quitensis to the stressful environments of Antarctica, characterized by low temperatures and extreme aridity. Projections of climate change for this ecosystem indicate that abiotic conditions will be less limiting due to an increase in temperature and water availability in the soil. Due to this decrease in stress induced by the climate change, it has been suggested that the positive role of fungal endophytes on performance of C. quitensis plants would decrease. In this study, we evaluated the role of endophytic fungi on osmoprotective molecules (sugar production, proline, oxidative stress) and gene expression (CqNCED1, CqABCG25, and CqRD22) as well as physiological traits (stomatal opening, net photosynthesis, and stomatal conductance) in individuals of C. quitensis. Individual plants of C. quitensis with (E+) and without (E−) endophytic fungi were exposed to simulated conditions of increased water availability (W+), having the current limiting water condition (W−) in Antarctica as control. The results reveal an endophyte-mediated lower oxidative stress, higher production of sugars and proline in plants. In addition, E+ plants showed differential expressions in genes related with drought stress response, which was more evident in W− than in W+. These parameters corresponded with increased physiological mechanisms such as higher net photosynthesis, stomatal opening and conductance under presence of endophytes (E+) as well as the projected water condition (W+) for Antarctica. These results suggest that the presence of fungal endophytes plays a positive role in favoring tolerance to drought in C. quitensis. However, this positive role would be diminished if the stress ... Article in Journal/Newspaper Antarc* Antarctica Directory of Open Access Journals: DOAJ Articles Frontiers in Microbiology 11 |
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topic |
functional symbiosis Antarctica climate change Colobanthus quitensis osmoprotective molecules water stress Microbiology QR1-502 |
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functional symbiosis Antarctica climate change Colobanthus quitensis osmoprotective molecules water stress Microbiology QR1-502 Rasme Hereme Samuel Morales-Navarro Gabriel Ballesteros Andrea Barrera Patricio Ramos Pedro E. Gundel Marco A. Molina-Montenegro Fungal Endophytes Exert Positive Effects on Colobanthus quitensis Under Water Stress but Neutral Under a Projected Climate Change Scenario in Antarctica |
topic_facet |
functional symbiosis Antarctica climate change Colobanthus quitensis osmoprotective molecules water stress Microbiology QR1-502 |
description |
Functional symbiosis is considered one of the successful mechanisms by which plants that inhabit extreme environment improve their ability to tolerate different types of stress. One of the most conspicuous type of symbiosis is the endophyticism. This interaction has been noted to play a role in the adaptation of the native vascular plant Colobanthus quitensis to the stressful environments of Antarctica, characterized by low temperatures and extreme aridity. Projections of climate change for this ecosystem indicate that abiotic conditions will be less limiting due to an increase in temperature and water availability in the soil. Due to this decrease in stress induced by the climate change, it has been suggested that the positive role of fungal endophytes on performance of C. quitensis plants would decrease. In this study, we evaluated the role of endophytic fungi on osmoprotective molecules (sugar production, proline, oxidative stress) and gene expression (CqNCED1, CqABCG25, and CqRD22) as well as physiological traits (stomatal opening, net photosynthesis, and stomatal conductance) in individuals of C. quitensis. Individual plants of C. quitensis with (E+) and without (E−) endophytic fungi were exposed to simulated conditions of increased water availability (W+), having the current limiting water condition (W−) in Antarctica as control. The results reveal an endophyte-mediated lower oxidative stress, higher production of sugars and proline in plants. In addition, E+ plants showed differential expressions in genes related with drought stress response, which was more evident in W− than in W+. These parameters corresponded with increased physiological mechanisms such as higher net photosynthesis, stomatal opening and conductance under presence of endophytes (E+) as well as the projected water condition (W+) for Antarctica. These results suggest that the presence of fungal endophytes plays a positive role in favoring tolerance to drought in C. quitensis. However, this positive role would be diminished if the stress ... |
format |
Article in Journal/Newspaper |
author |
Rasme Hereme Samuel Morales-Navarro Gabriel Ballesteros Andrea Barrera Patricio Ramos Pedro E. Gundel Marco A. Molina-Montenegro |
author_facet |
Rasme Hereme Samuel Morales-Navarro Gabriel Ballesteros Andrea Barrera Patricio Ramos Pedro E. Gundel Marco A. Molina-Montenegro |
author_sort |
Rasme Hereme |
title |
Fungal Endophytes Exert Positive Effects on Colobanthus quitensis Under Water Stress but Neutral Under a Projected Climate Change Scenario in Antarctica |
title_short |
Fungal Endophytes Exert Positive Effects on Colobanthus quitensis Under Water Stress but Neutral Under a Projected Climate Change Scenario in Antarctica |
title_full |
Fungal Endophytes Exert Positive Effects on Colobanthus quitensis Under Water Stress but Neutral Under a Projected Climate Change Scenario in Antarctica |
title_fullStr |
Fungal Endophytes Exert Positive Effects on Colobanthus quitensis Under Water Stress but Neutral Under a Projected Climate Change Scenario in Antarctica |
title_full_unstemmed |
Fungal Endophytes Exert Positive Effects on Colobanthus quitensis Under Water Stress but Neutral Under a Projected Climate Change Scenario in Antarctica |
title_sort |
fungal endophytes exert positive effects on colobanthus quitensis under water stress but neutral under a projected climate change scenario in antarctica |
publisher |
Frontiers Media S.A. |
publishDate |
2020 |
url |
https://doi.org/10.3389/fmicb.2020.00264 https://doaj.org/article/4fc0506ead4440849bdb44d2ae8d6b0f |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Frontiers in Microbiology, Vol 11 (2020) |
op_relation |
https://www.frontiersin.org/article/10.3389/fmicb.2020.00264/full https://doaj.org/toc/1664-302X 1664-302X doi:10.3389/fmicb.2020.00264 https://doaj.org/article/4fc0506ead4440849bdb44d2ae8d6b0f |
op_doi |
https://doi.org/10.3389/fmicb.2020.00264 |
container_title |
Frontiers in Microbiology |
container_volume |
11 |
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1766260526254391296 |