Fertilizer Rate-Associated Increase in Foliar Jasmonate Burst Observed in Wounded Arabidopsis thaliana Leaves is Attenuated at eCO2
The predicted future increase in tropospheric carbon dioxide (CO2) levels will have major effects on C3 plants and their interactions with other organisms in the biosphere. In response to attack by chewing arthropod herbivores or nectrotrophic pathogens, many plants mount a rapid and intense increas...
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doaj-dfb77bc26b984497aa1ea455612f15352020-11-25T02:06:24ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2020-01-011010.3389/fpls.2019.01636495766Fertilizer Rate-Associated Increase in Foliar Jasmonate Burst Observed in Wounded Arabidopsis thaliana Leaves is Attenuated at eCO2Julian Martinez Henao0Louis Erik Demers1Katharina Grosser2Andreas Schedl3Nicole M. van Dam4Jacqueline C. Bede5Department of Plant Science, McGill University, Ste-Anne-de-Bellevue, QC, CanadaDepartment of Plant Science, McGill University, Ste-Anne-de-Bellevue, QC, CanadaGerman Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Friedrich-Schiller-University Jena, Leipzig, GermanyGerman Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Friedrich-Schiller-University Jena, Leipzig, GermanyGerman Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Friedrich-Schiller-University Jena, Leipzig, GermanyDepartment of Plant Science, McGill University, Ste-Anne-de-Bellevue, QC, CanadaThe predicted future increase in tropospheric carbon dioxide (CO2) levels will have major effects on C3 plants and their interactions with other organisms in the biosphere. In response to attack by chewing arthropod herbivores or nectrotrophic pathogens, many plants mount a rapid and intense increase in jasmonate-related phytohormones that results in a robust defense response; however, previous studies have shown that C3 plants grown at elevated CO2 may have lower induced jasmonate levels, particularly in well nitrate-fertilized plants. Given the relationship between atmospheric CO2, photorespiration, cellular reductant and redox status, nitrogen assimilation and phytohormones, we compared wound-induced responses of the C3 plant Arabidopsis thaliana. These plants were fertilized at two different rates (1 or 10 mM) with nitrate or ammonium and grown at ambient or elevated CO2. In response to artificial wounding, an increase in cellular oxidative status leads to a strong increase in jasmonate phytohormones. At ambient CO2, increased oxidative state of nitrate-fertilized plants leads to a robust 7-iso-jasmonyl-L-isoleucine increase; however, the strong fertilizer rate-associated increase is alleviated in plants grown at elevated CO2. As well, the changes in ascorbate in response to wounding and wound-induced salicylic acid levels may also contribute to the suppression of the jasmonate burst. Understanding the mechanism underlying the attenuation of the jasmonate burst at elevated CO2 has important implications for fertilization strategies under future predicted climatic conditions.https://www.frontiersin.org/article/10.3389/fpls.2019.01636/fullascorbatecarbon dioxideglutathionejasmonatenitrogen fertilizeroxidative stress |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Julian Martinez Henao Louis Erik Demers Katharina Grosser Andreas Schedl Nicole M. van Dam Jacqueline C. Bede |
spellingShingle |
Julian Martinez Henao Louis Erik Demers Katharina Grosser Andreas Schedl Nicole M. van Dam Jacqueline C. Bede Fertilizer Rate-Associated Increase in Foliar Jasmonate Burst Observed in Wounded Arabidopsis thaliana Leaves is Attenuated at eCO2 Frontiers in Plant Science ascorbate carbon dioxide glutathione jasmonate nitrogen fertilizer oxidative stress |
author_facet |
Julian Martinez Henao Louis Erik Demers Katharina Grosser Andreas Schedl Nicole M. van Dam Jacqueline C. Bede |
author_sort |
Julian Martinez Henao |
title |
Fertilizer Rate-Associated Increase in Foliar Jasmonate Burst Observed in Wounded Arabidopsis thaliana Leaves is Attenuated at eCO2 |
title_short |
Fertilizer Rate-Associated Increase in Foliar Jasmonate Burst Observed in Wounded Arabidopsis thaliana Leaves is Attenuated at eCO2 |
title_full |
Fertilizer Rate-Associated Increase in Foliar Jasmonate Burst Observed in Wounded Arabidopsis thaliana Leaves is Attenuated at eCO2 |
title_fullStr |
Fertilizer Rate-Associated Increase in Foliar Jasmonate Burst Observed in Wounded Arabidopsis thaliana Leaves is Attenuated at eCO2 |
title_full_unstemmed |
Fertilizer Rate-Associated Increase in Foliar Jasmonate Burst Observed in Wounded Arabidopsis thaliana Leaves is Attenuated at eCO2 |
title_sort |
fertilizer rate-associated increase in foliar jasmonate burst observed in wounded arabidopsis thaliana leaves is attenuated at eco2 |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Plant Science |
issn |
1664-462X |
publishDate |
2020-01-01 |
description |
The predicted future increase in tropospheric carbon dioxide (CO2) levels will have major effects on C3 plants and their interactions with other organisms in the biosphere. In response to attack by chewing arthropod herbivores or nectrotrophic pathogens, many plants mount a rapid and intense increase in jasmonate-related phytohormones that results in a robust defense response; however, previous studies have shown that C3 plants grown at elevated CO2 may have lower induced jasmonate levels, particularly in well nitrate-fertilized plants. Given the relationship between atmospheric CO2, photorespiration, cellular reductant and redox status, nitrogen assimilation and phytohormones, we compared wound-induced responses of the C3 plant Arabidopsis thaliana. These plants were fertilized at two different rates (1 or 10 mM) with nitrate or ammonium and grown at ambient or elevated CO2. In response to artificial wounding, an increase in cellular oxidative status leads to a strong increase in jasmonate phytohormones. At ambient CO2, increased oxidative state of nitrate-fertilized plants leads to a robust 7-iso-jasmonyl-L-isoleucine increase; however, the strong fertilizer rate-associated increase is alleviated in plants grown at elevated CO2. As well, the changes in ascorbate in response to wounding and wound-induced salicylic acid levels may also contribute to the suppression of the jasmonate burst. Understanding the mechanism underlying the attenuation of the jasmonate burst at elevated CO2 has important implications for fertilization strategies under future predicted climatic conditions. |
topic |
ascorbate carbon dioxide glutathione jasmonate nitrogen fertilizer oxidative stress |
url |
https://www.frontiersin.org/article/10.3389/fpls.2019.01636/full |
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