A Conserved Transcription Factor Mediates Nuclear Control of Organelle Biogenesis in Anciently Diverged Land PlantsW
Land plant chloroplasts evolved from those found in the green algae. During land plant evolution, nuclear regulatory mechanisms have been modified to produce morphologically and functionally diverse chloroplasts in distinct developmental contexts. At least some of these mechanisms evolved independen...
Saved in:
Published in | The Plant cell Vol. 17; no. 7; pp. 1894 - 1907 |
---|---|
Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
American Society of Plant Biologists
01.07.2005
|
Online Access | Get full text |
Cover
Loading…
Summary: | Land plant chloroplasts evolved from those found in the green algae. During land plant evolution, nuclear regulatory mechanisms have been modified to produce morphologically and functionally diverse chloroplasts in distinct developmental contexts. At least some of these mechanisms evolved independently in different plant lineages. In angiosperms, GOLDEN2-LIKE (GLK) transcription factors regulate the development of at least three chloroplast types. To determine whether GLK-mediated regulation of chloroplast development evolved within angiosperms or is a plesiomorphy within land plants, gene function was examined in the moss
Physcomitrella patens
. Gene expression patterns and loss-of-function mutant phenotypes suggested that
GLK
gene function is conserved between
P. patens
and
Arabidopsis thaliana
, species that diverged >400 million years ago. In support of this suggestion, moss genes partially complement Arabidopsis loss-of-function mutants. Therefore, GLK-mediated regulation of chloroplast development defines one of the most ancient conserved regulatory mechanisms identified in the plant kingdom. |
---|---|
Bibliography: | Current address: BioMed Central, Middlesex House, 32-42 Cleveland Street, London W1T 4LB, UK. To whom correspondence should be addressed. E-mail jane.langdale@plants.ox.ac.uk; fax 44-1865-275147. Online version contains Web-only data. Article, publication date, and citation information can be found at www.plantcell.org/cgi/doi/10.1105/tpc.105.033191. Current address: John Innes Centre, Colney Lane, Norwich NR4 7UH, UK. The author responsible for distribution of materials integral to the findings presented in this article in accordance with the policy described in the Instructions for Authors (www.plantcell.org) is: Jane A. Langdale (jane.langdale@plants.ox.ac.uk). |
ISSN: | 1040-4651 1532-298X |
DOI: | 10.1105/tpc.105.033191 |