The makings of a gradient: spatiotemporal distribution of gibberellins in plant development

Current Opinion in Plant Biology
Annalisa Rizza, Alexander M Jones

Abstract

The gibberellin phytohormones regulate growth and development throughout the plant lifecycle. Upstream regulation and downstream responses to gibberellins vary across cells and tissues, developmental stages, environmental conditions, and plant species. The spatiotemporal distribution of gibberellins is the result of an ensemble of biosynthetic, catabolic and transport activities, each of which can be targeted to influence gibberellin levels in space and time. Understanding gibberellin distributions has recently benefited from discovery of transport proteins capable of importing gibberellins as well as novel methods for detecting gibberellins with high spatiotemporal resolution. For example, a genetically-encoded fluorescent biosensor for gibberellins was deployed in Arabidopsis and revealed gibberellin gradients in rapidly elongating tissues. Although cellular accumulations of gibberellins are hypothesized to regulate cell growth in developing embryos, germinating seeds, elongating stems and roots, and developing floral organs, understanding the quantitative relationship between cellular gibberellin levels and cellular growth awaits further investigation. It is also unclear how spatiotemporal gibberellin distributions result fr...Continue Reading

Citations

Jun 25, 2019·Horticulture Research·Feng QueAi-Sheng Xiong
Jun 5, 2020·Plants·Gerardo Carrera-CastañoLuis Oñate-Sánchez
Feb 28, 2019·Chemical Science·Shira WexlerRoy Weinstain
Feb 19, 2020·Journal of Experimental Botany·Mara CucinottaLucia Colombo
Jul 12, 2020·Plant & Cell Physiology·Peter Hedden
Nov 22, 2020·Proceedings of the National Academy of Sciences of the United States of America·Shunsuke WatanabeMitsunori Seo
Jan 21, 2021·International Journal of Molecular Sciences·Yang BaiChengyuan Liang
Apr 4, 2021·Life·Valentina LevakAnna Coll
Jun 3, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Wei LiLangtao Xiao
Jun 9, 2021·Current Opinion in Plant Biology·Moran Anfang, Eilon Shani
Oct 27, 2021·Applied Microbiology and Biotechnology·Jorge Poveda, Fernando González-Andrés

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Methods Mentioned

BETA
two-hybrid
biosensors
biosensor
FRET
fluorescence imaging

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