The importance of localized auxin production for morphogenesis of reproductive organs and embryos in Arabidopsis

Plant sexual reproduction involves highly structured and specialized organs: stamens (male) and gynoecia (female, containing ovules). These organs synchronously develop within protective flower buds, until anthesis, via tightly coordinated mechanisms that are essential for effective fertilization an...

Full description

Saved in:
Bibliographic Details
Published in:Journal of experimental botany 2015-08, Vol.66 (16), p.5029-5042
Main Authors: Robert, Hélène S., Khaitova, Lucie Crhak, Mroue, Souad, Benková, Eva
Format: Article
Language:English
Subjects:
Arabidopsis - embryology
Arabidopsis - growth & development
Arabidopsis - metabolism
Indoleacetic Acids - metabolism
Morphogenesis
Plant Growth Regulators - metabolism
Plant Proteins - genetics
Plant Proteins - metabolism
REVIEW PAPER
Transcription Factors - genetics
Transcription Factors - metabolism
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Plant sexual reproduction involves highly structured and specialized organs: stamens (male) and gynoecia (female, containing ovules). These organs synchronously develop within protective flower buds, until anthesis, via tightly coordinated mechanisms that are essential for effective fertilization and production of viable seeds. The phytohormone auxin is one of the key endogenous signalling molecules controlling initiation and development of these, and other, plant organs. In particular, its uneven distribution, resulting from tightly controlled production, metabolism and directional transport, is an important morphogenic factor. In this review we discuss how developmentally controlled and localized auxin biosynthesis and transport contribute to the coordinated development of plants’ reproductive organs, and their fertilized derivatives (embryos) via the regulation of auxin levels and distribution within and around them. Current understanding of the links between de novo local auxin biosynthesis, auxin transport and/or signalling is presented to highlight the importance of the non-cell autonomous action of auxin production on development and morphogenesis of reproductive organs and embryos. An overview of transcription factor families, which spatiotemporally define local auxin production by controlling key auxin biosynthetic enzymes, is also presented.
ISSN:0022-0957
1460-2431
DOI:10.1093/jxb/erv256