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The decoration of specialized metabolites influences stylar development

Plants produce many different specialized (secondary) metabolites that function in solving ecological challenges; few are known to function in growth or other primary processes. 17-Hydroxygeranylinalool diterpene glycosides (DTGs) are abundant herbivory-induced, structurally diverse and commonly mal...

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Autores principales: Li, Jiancai, Schuman, Meredith C, Halitschke, Rayko, Li, Xiang, Guo, Han, Grabe, Veit, Hammer, Austin, Baldwin, Ian T
Formato: Online Artículo Texto
Lenguaje:English
Publicado: eLife Sciences Publications, Ltd 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6192696/
https://www.ncbi.nlm.nih.gov/pubmed/30289384
http://dx.doi.org/10.7554/eLife.38611
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author Li, Jiancai
Schuman, Meredith C
Halitschke, Rayko
Li, Xiang
Guo, Han
Grabe, Veit
Hammer, Austin
Baldwin, Ian T
author_facet Li, Jiancai
Schuman, Meredith C
Halitschke, Rayko
Li, Xiang
Guo, Han
Grabe, Veit
Hammer, Austin
Baldwin, Ian T
author_sort Li, Jiancai
collection PubMed
description Plants produce many different specialized (secondary) metabolites that function in solving ecological challenges; few are known to function in growth or other primary processes. 17-Hydroxygeranylinalool diterpene glycosides (DTGs) are abundant herbivory-induced, structurally diverse and commonly malonylated defense metabolites in Nicotiana attenuata plants. By identifying and silencing a malonyltransferase, NaMaT1, involved in DTG malonylation, we found that DTG malonylation percentages are normally remarkably uniform, but when disrupted, result in DTG-dependent reduced floral style lengths, which in turn result from reduced stylar cell sizes, IAA contents, and YUC activity; phenotypes that could be restored by IAA supplementation or by silencing the DTG pathway. Moreover, the Nicotiana genus-specific JA-deficient short-style phenotype also results from alterations in DTG malonylation patterns. Decorations of plant specialized metabolites can be tuned to remarkably uniform levels, and this regulation plays a central but poorly understood role in controlling the development of specific plant parts, such as floral styles.
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spelling pubmed-61926962018-10-21 The decoration of specialized metabolites influences stylar development Li, Jiancai Schuman, Meredith C Halitschke, Rayko Li, Xiang Guo, Han Grabe, Veit Hammer, Austin Baldwin, Ian T eLife Ecology Plants produce many different specialized (secondary) metabolites that function in solving ecological challenges; few are known to function in growth or other primary processes. 17-Hydroxygeranylinalool diterpene glycosides (DTGs) are abundant herbivory-induced, structurally diverse and commonly malonylated defense metabolites in Nicotiana attenuata plants. By identifying and silencing a malonyltransferase, NaMaT1, involved in DTG malonylation, we found that DTG malonylation percentages are normally remarkably uniform, but when disrupted, result in DTG-dependent reduced floral style lengths, which in turn result from reduced stylar cell sizes, IAA contents, and YUC activity; phenotypes that could be restored by IAA supplementation or by silencing the DTG pathway. Moreover, the Nicotiana genus-specific JA-deficient short-style phenotype also results from alterations in DTG malonylation patterns. Decorations of plant specialized metabolites can be tuned to remarkably uniform levels, and this regulation plays a central but poorly understood role in controlling the development of specific plant parts, such as floral styles. eLife Sciences Publications, Ltd 2018-10-05 /pmc/articles/PMC6192696/ /pubmed/30289384 http://dx.doi.org/10.7554/eLife.38611 Text en © 2018, Li et al http://creativecommons.org/licenses/by/4.0/ http://creativecommons.org/licenses/by/4.0/This article is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use and redistribution provided that the original author and source are credited.
spellingShingle Ecology
Li, Jiancai
Schuman, Meredith C
Halitschke, Rayko
Li, Xiang
Guo, Han
Grabe, Veit
Hammer, Austin
Baldwin, Ian T
The decoration of specialized metabolites influences stylar development
title The decoration of specialized metabolites influences stylar development
title_full The decoration of specialized metabolites influences stylar development
title_fullStr The decoration of specialized metabolites influences stylar development
title_full_unstemmed The decoration of specialized metabolites influences stylar development
title_short The decoration of specialized metabolites influences stylar development
title_sort decoration of specialized metabolites influences stylar development
topic Ecology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6192696/
https://www.ncbi.nlm.nih.gov/pubmed/30289384
http://dx.doi.org/10.7554/eLife.38611
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