Cargando…
Control of Carbon Assimilation and Partitioning by Jasmonate: An Accounting of Growth–Defense Tradeoffs
Plant growth is often constrained by the limited availability of resources in the microenvironment. Despite the continuous threat of attack from insect herbivores and pathogens, investment in defense represents a lost opportunity to expand photosynthetic capacity in leaves and absorption of nutrient...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2016
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4844420/ https://www.ncbi.nlm.nih.gov/pubmed/27135227 http://dx.doi.org/10.3390/plants5010007 |
_version_ | 1782428769322008576 |
---|---|
author | Havko, Nathan E. Major, Ian T. Jewell, Jeremy B. Attaran, Elham Browse, John Howe, Gregg A. |
author_facet | Havko, Nathan E. Major, Ian T. Jewell, Jeremy B. Attaran, Elham Browse, John Howe, Gregg A. |
author_sort | Havko, Nathan E. |
collection | PubMed |
description | Plant growth is often constrained by the limited availability of resources in the microenvironment. Despite the continuous threat of attack from insect herbivores and pathogens, investment in defense represents a lost opportunity to expand photosynthetic capacity in leaves and absorption of nutrients and water by roots. To mitigate the metabolic expenditure on defense, plants have evolved inducible defense strategies. The plant hormone jasmonate (JA) is a key regulator of many inducible defenses. Synthesis of JA in response to perceived danger leads to the deployment of a variety of defensive structures and compounds, along with a potent inhibition of growth. Genetic studies have established an important role for JA in mediating tradeoffs between growth and defense. However, several gaps remain in understanding of how JA signaling inhibits growth, either through direct transcriptional control of JA-response genes or crosstalk with other signaling pathways. Here, we highlight recent progress in uncovering the role of JA in controlling growth-defense balance and its relationship to resource acquisition and allocation. We also discuss tradeoffs in the context of the ability of JA to promote increased leaf mass per area (LMA), which is a key indicator of leaf construction costs and leaf life span. |
format | Online Article Text |
id | pubmed-4844420 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-48444202016-04-29 Control of Carbon Assimilation and Partitioning by Jasmonate: An Accounting of Growth–Defense Tradeoffs Havko, Nathan E. Major, Ian T. Jewell, Jeremy B. Attaran, Elham Browse, John Howe, Gregg A. Plants (Basel) Review Plant growth is often constrained by the limited availability of resources in the microenvironment. Despite the continuous threat of attack from insect herbivores and pathogens, investment in defense represents a lost opportunity to expand photosynthetic capacity in leaves and absorption of nutrients and water by roots. To mitigate the metabolic expenditure on defense, plants have evolved inducible defense strategies. The plant hormone jasmonate (JA) is a key regulator of many inducible defenses. Synthesis of JA in response to perceived danger leads to the deployment of a variety of defensive structures and compounds, along with a potent inhibition of growth. Genetic studies have established an important role for JA in mediating tradeoffs between growth and defense. However, several gaps remain in understanding of how JA signaling inhibits growth, either through direct transcriptional control of JA-response genes or crosstalk with other signaling pathways. Here, we highlight recent progress in uncovering the role of JA in controlling growth-defense balance and its relationship to resource acquisition and allocation. We also discuss tradeoffs in the context of the ability of JA to promote increased leaf mass per area (LMA), which is a key indicator of leaf construction costs and leaf life span. MDPI 2016-01-15 /pmc/articles/PMC4844420/ /pubmed/27135227 http://dx.doi.org/10.3390/plants5010007 Text en © 2016 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons by Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Review Havko, Nathan E. Major, Ian T. Jewell, Jeremy B. Attaran, Elham Browse, John Howe, Gregg A. Control of Carbon Assimilation and Partitioning by Jasmonate: An Accounting of Growth–Defense Tradeoffs |
title | Control of Carbon Assimilation and Partitioning by Jasmonate: An Accounting of Growth–Defense Tradeoffs |
title_full | Control of Carbon Assimilation and Partitioning by Jasmonate: An Accounting of Growth–Defense Tradeoffs |
title_fullStr | Control of Carbon Assimilation and Partitioning by Jasmonate: An Accounting of Growth–Defense Tradeoffs |
title_full_unstemmed | Control of Carbon Assimilation and Partitioning by Jasmonate: An Accounting of Growth–Defense Tradeoffs |
title_short | Control of Carbon Assimilation and Partitioning by Jasmonate: An Accounting of Growth–Defense Tradeoffs |
title_sort | control of carbon assimilation and partitioning by jasmonate: an accounting of growth–defense tradeoffs |
topic | Review |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4844420/ https://www.ncbi.nlm.nih.gov/pubmed/27135227 http://dx.doi.org/10.3390/plants5010007 |
work_keys_str_mv | AT havkonathane controlofcarbonassimilationandpartitioningbyjasmonateanaccountingofgrowthdefensetradeoffs AT majoriant controlofcarbonassimilationandpartitioningbyjasmonateanaccountingofgrowthdefensetradeoffs AT jewelljeremyb controlofcarbonassimilationandpartitioningbyjasmonateanaccountingofgrowthdefensetradeoffs AT attaranelham controlofcarbonassimilationandpartitioningbyjasmonateanaccountingofgrowthdefensetradeoffs AT browsejohn controlofcarbonassimilationandpartitioningbyjasmonateanaccountingofgrowthdefensetradeoffs AT howegregga controlofcarbonassimilationandpartitioningbyjasmonateanaccountingofgrowthdefensetradeoffs |