Hormonal diterpenoids derived from ent-kaurenoic acid are involved in the blue-light avoidance response of Physcomitrella patens

Plant Signaling & Behavior
Sho MiyazakiHiroshi Kawaide

Abstract

Gibberellins (GAs) are diterpenoid hormones that regulate growth and development in flowering plants. The moss Physcomitrella patens has part of the GA biosynthetic pathway from geranylgeranyl diphosphate to ent-kaurenoic acid via ent-kaurene, but it does not produce GA. Disruption of the ent-kaurene synthase gene in P. patens suppressed caulonemal differentiation. Application of ent-kaurene or ent-kaurenoic acid restored differentiation, suggesting that derivative(s) of ent-kaurenoic acid, but not GAs, are endogenous regulator(s) of caulonemal cell differentiation. The protonemal growth of P. patens shows an avoidance response under unilateral blue light. Physiological studies using gene mutants involved in ent-kaurene biosynthesis confirmed that diterpenoid(s) regulate the blue-light response. Here, we discuss the implications of these findings, and provide data for the ent-kaurene oxidase gene-disrupted mutant.

References

Jul 1, 1990·Plant Molecular Biology·F GuerineauP Mullineaux
Mar 16, 2000·DNA Research : an International Journal for Rapid Publication of Reports on Genes and Genomes·T NishiyamaM Hasebe

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Citations

Apr 21, 2018·Nature Communications·Yanlong GuanJinling Huang
Dec 7, 2016·Frontiers in Plant Science·Meirong Jia, Reuben J Peters
Sep 6, 2019·The Biochemical Journal·Cody LemkeReuben J Peters
Apr 1, 2017·Frontiers in Plant Science·Inés Ponce de León, Marcos Montesano
Jul 11, 2021·Plant Molecular Biology·Ambre Guillory, Sandrine Bonhomme

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Methods Mentioned

BETA
phosphotransferase
PCR

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