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Molecular interaction of jasmonate and phytochrome A signalling

Molecular interaction of jasmonate and phytochrome A signalling
Molecular interaction of jasmonate and phytochrome A signalling
The phytochrome family of red (R) and far-red (FR) light receptors (phyA–phyE in Arabidopsis) play important roles throughout plant development and regulate elongation growth during de-etiolation and under light. Phytochromes regulate growth through interaction with the phytohormones gibberellin, auxin, and brassinosteroid. Recently it has been established that jasmonic acid (JA), a phytohormone for stress responses, namely wounding and defence, is also important in inhibition of hypocotyl growth regulated by phyA and phyB. This review focuses on recent advances in our understanding of the molecular basis of the interaction between JA and phytochrome signalling particularly during seedling development in Arabidopsis. Significantly, JA biosynthesis genes are induced by phyA. The protein abundance of JAR1/FIN219, an enzyme for the final synthesis step to give JA-Ile, an active form of JA, is also determined by phyA. In addition, JAR1/FIN219 directly interacts with an E3-ligase, COP1, a master regulator for transcription factors regulating hypocotyl growth, suggesting a more direct role in growth regulation. There are a number of points of interaction in the molecular signalling of JA and phytochrome during seedling development in Arabidopsis, and we propose a model for how they work together to regulate hypocotyl growth
0022-0957
2847-2857
Hsieh, Hsu-Liang
173735c9-03d1-456c-af61-d8a77326a512
Okamoto, Haruko
cea35380-7618-44c8-a268-47b0198cc7f9
Hsieh, Hsu-Liang
173735c9-03d1-456c-af61-d8a77326a512
Okamoto, Haruko
cea35380-7618-44c8-a268-47b0198cc7f9

Hsieh, Hsu-Liang and Okamoto, Haruko (2014) Molecular interaction of jasmonate and phytochrome A signalling. Journal of Experimental Botany, 2847-2857. (doi:10.1093/jxb/eru230).

Record type: Review

Abstract

The phytochrome family of red (R) and far-red (FR) light receptors (phyA–phyE in Arabidopsis) play important roles throughout plant development and regulate elongation growth during de-etiolation and under light. Phytochromes regulate growth through interaction with the phytohormones gibberellin, auxin, and brassinosteroid. Recently it has been established that jasmonic acid (JA), a phytohormone for stress responses, namely wounding and defence, is also important in inhibition of hypocotyl growth regulated by phyA and phyB. This review focuses on recent advances in our understanding of the molecular basis of the interaction between JA and phytochrome signalling particularly during seedling development in Arabidopsis. Significantly, JA biosynthesis genes are induced by phyA. The protein abundance of JAR1/FIN219, an enzyme for the final synthesis step to give JA-Ile, an active form of JA, is also determined by phyA. In addition, JAR1/FIN219 directly interacts with an E3-ligase, COP1, a master regulator for transcription factors regulating hypocotyl growth, suggesting a more direct role in growth regulation. There are a number of points of interaction in the molecular signalling of JA and phytochrome during seedling development in Arabidopsis, and we propose a model for how they work together to regulate hypocotyl growth

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More information

e-pub ahead of print date: 28 May 2014
Published date: 1 June 2014
Organisations: Centre for Biological Sciences

Identifiers

Local EPrints ID: 365246
URI: http://eprints.soton.ac.uk/id/eprint/365246
ISSN: 0022-0957
PURE UUID: dbeb5cca-09b8-42f4-87e3-8ffcc97216be

Catalogue record

Date deposited: 06 Jun 2014 15:26
Last modified: 16 Jul 2019 21:04

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