Plant Phototropic Growth.

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State: Public
Version: Author's accepted manuscript
Serval ID
serval:BIB_251186D6D8D2
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
Title
Plant Phototropic Growth.
Journal
Current Biology
Author(s)
Fankhauser C., Christie J.M.
ISSN
1879-0445 (Electronic)
ISSN-L
0960-9822
Publication state
Published
Issued date
2015
Peer-reviewed
Oui
Volume
25
Number
9
Pages
R384-R389
Language
english
Abstract
Plants are photoautotrophic sessile organisms that use environmental cues to optimize multiple facets of growth and development. A classic example is phototropism - in shoots this is typically positive, leading to growth towards the light, while roots frequently show negative phototropism triggering growth away from the light. Shoot phototropism optimizes light capture of leaves in low light environments and hence increases photosynthetic productivity. Phototropins are plasma-membrane-associated UV-A/blue-light activated kinases that trigger phototropic growth. Light perception liberates their protein kinase domain from the inhibitory action of the amino-terminal photosensory portion of the photoreceptor. Following a series of still poorly understood events, phototropin activation leads to the formation of a gradient of the growth hormone auxin across the photo-stimulated stem. The greater auxin concentration on the shaded compared with the lit side of the stem enables growth reorientation towards the light. In this Minireview, we briefly summarize the signaling steps starting from photoreceptor activation until the establishment of a lateral auxin gradient, ultimately leading to phototropic growth in shoots.
Pubmed
Web of science
Open Access
Yes
Create date
28/05/2015 13:56
Last modification date
20/08/2019 14:03
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