| Title: | The decoration of specialized metabolites influences stylar development |
| Author(s): | Li J; Schuman MC; Halitschke R; Li X; Guo H; Grabe V; Hammer A; Baldwin IT; |
| Address: | "Department of Molecular Ecology, Max Planck Institute for Chemical Ecology, Jena, Germany. Department of Geography, University of Zurich, Zurich, Switzerland. Department of Evolutionary Neuroethology, Max Planck Institute for Chemical Ecology, Jena, Germany. Department of Biology, Brigham Young University, Provo, United States" |
| ISSN/ISBN: | 2050-084X (Electronic) 2050-084X (Linking) |
| Abstract: | "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" |
| Keywords: | "Cell Size Diterpenes/chemistry/metabolism Flowers/cytology/*growth & development/metabolism Gene Expression Regulation, Plant Gene Silencing Glycosides/chemistry/metabolism Herbivory/genetics/physiology Plant Growth Regulators/*genetics/metabolism Tobacco;" |
| Notes: | "MedlineLi, Jiancai Schuman, Meredith C Halitschke, Rayko Li, Xiang Guo, Han Grabe, Veit Hammer, Austin Baldwin, Ian T eng 293926/H2020 European Research Council/International 293926/ERC_/European Research Council/International Collaborative Research Centre 'ChemicalMediators in Complex Biosystems - ChemBioSys' (SFB 1127)/Deutsche Forschungsgemeinschaft/International Open-access funding/Max-Planck-Gesellschaft/International Senior Award: ClockWorkGreen 293926/European Research Council/International Research Support, Non-U.S. Gov't England 2018/10/06 Elife. 2018 Oct 5; 7:e38611. doi: 10.7554/eLife.38611" |
