Tomato STEROL GLYCOSYLTRANSFERASE 1 silencing unveils a major role of steryl glycosides in plant and fruit development
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INVESTIGACIONMetadata
Title
Tomato STEROL GLYCOSYLTRANSFERASE 1 silencing unveils a major role of steryl glycosides in plant and fruit developmentAuthor (s)
Date
2023Publisher
ElsevierBibliographic citation
CHÁVEZ, Angel, et al. Tomato STEROL GLYCOSYLTRANSFERASE 1 silencing unveils a major role of steryl glycosides in plant and fruit development. Environmental and Experimental Botany, 2023, vol. 206, p. 105181.Type
info:eu-repo/semantics/articlePublisher version
https://www.sciencedirect.com/science/article/pii/S0098847222004038Version
info:eu-repo/semantics/publishedVersionSubject
Abstract
Free and glycosylated sterols localize in the plant cell plasma membrane, where in combination with other lipids
regulate its structure and function. The role of glycosylated sterols in regulating membrane-associated ... [+]
Free and glycosylated sterols localize in the plant cell plasma membrane, where in combination with other lipids
regulate its structure and function. The role of glycosylated sterols in regulating membrane-associated biological
processes is more relevant in plants like tomato (Solanum lycopersicum), in which glycosylated sterols are the
predominant sterols. A proper ratio of free sterols versus glycosylated sterols has proven to be essential for proper
plant performance in several species, but almost nothing is known in tomato. To assess the role of glycosylated
sterols in tomato plant and fruit development, we generated transgenic lines of tomato cultivar Micro-Tom
expressing two different amiRNAs devised to silence STEROL GLYCOSYLTRANSFERASE 1, the most actively
expressed of the four genes encoding sterol glycosyltransferases in this plant. STEROL GLYCOSYLTRANSFERASE
1 gene silencing caused moderate plant dwarfism and reduced fruit size. Analysis of the profile of glycosylated
sterols throughout fruit development demonstrated that the maintenance of proper levels of these compounds
during the early stages of fruit development is essential for normal fruit growth, since reduced levels of glycosylated sterols trigger a transcriptional downregulatory response that affects genes involved in processes that are
critical for proper fruit development, such as seed filling, cell wall extension and auxin signaling. [-]
Is part of
Environmental and Experimental Botany, Volume 206, February 2023.Funder Name
Agencia Estatal de Investigación | Generalitat de Catalunya
Project code
AGL2017-88842-R | PID2021-126591OB-I00 | 2017SGR710 | CEX2019-000902-S
Rights
© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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