Phototropism: Translating light into directional growth.

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State: Public
Version: Author's accepted manuscript
Serval ID
serval:BIB_BFBF5EAD16F0
Type
Article: article from journal or magazin.
Publication sub-type
Review (review): journal as complete as possible of one specific subject, written based on exhaustive analyses from published work.
Collection
Publications
Institution
Title
Phototropism: Translating light into directional growth.
Journal
American Journal of Botany
Author(s)
Hohm T., Preuten T., Fankhauser C.
ISSN
1537-2197 (Electronic)
ISSN-L
0002-9122
Publication state
Published
Issued date
2013
Peer-reviewed
Oui
Volume
100
Number
1
Pages
47-59
Language
english
Abstract
Phototropism allows plants to align their photosynthetic tissues with incoming light. The direction of incident light is sensed by the phototropin family of blue light photoreceptors (phot1 and phot2 in Arabidopsis), which are light-activated protein kinases. The kinase activity of phototropins and phosphorylation of residues in the activation loop of their kinase domains are essential for the phototropic response. These initial steps trigger the formation of the auxin gradient across the hypocotyl that leads to asymmetric growth. The molecular events between photoreceptor activation and the growth response are only starting to be elucidated. In this review, we discuss the major steps leading from light perception to directional growth concentrating on Arabidopsis. In addition, we highlight links that connect these different steps enabling the phototropic response.
Keywords
Arabidopsis thaliana, asymmetric growth, auxin receptors, auxin transport, phosphorylation, phototropin 1, phototropism
Pubmed
Web of science
Open Access
Yes
Create date
07/02/2013 9:51
Last modification date
20/08/2019 15:34
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