| Literature DB >> 27879393 |
Youn-Jeong Nam1,2,3,4, Dorota Herman1,2,3,4, Jonas Blomme1,2,3,4, Eunyoung Chae1,2,3,4, Mikiko Kojima1,2,3,4, Frederik Coppens1,2,3,4, Veronique Storme1,2,3,4, Twiggy Van Daele1,2,3,4, Stijn Dhondt1,2,3,4, Hitoshi Sakakibara1,2,3,4, Detlef Weigel1,2,3,4, Dirk Inzé5,6,7,8, Nathalie Gonzalez1,2,3,4.
Abstract
Although phytohormones such as gibberellins are essential for many conserved aspects of plant physiology and development, plants vary greatly in their responses to these regulatory compounds. Here, we use genetic perturbation of endogenous gibberellin levels to probe the extent of intraspecific variation in gibberellin responses in natural accessions of Arabidopsis (Arabidopsis thaliana). We find that these accessions vary greatly in their ability to buffer the effects of overexpression of GA20ox1, encoding a rate-limiting enzyme for gibberellin biosynthesis, with substantial differences in bioactive gibberellin concentrations as well as transcriptomes and growth trajectories. These findings demonstrate a surprising level of flexibility in the wiring of regulatory networks underlying hormone metabolism and signaling.Entities:
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Year: 2016 PMID： 27879393 PMCID： PMC5210761 DOI： 10.1104/pp.16.01626
Source DB: PubMed Journal: Plant Physiol ISSN： 0032-0889 Impact factor: 8.340