Insights into the regulation of C4 leaf development from comparative transcriptomic analysis.
Curr Opin Plant Biol
; 30: 1-10, 2016 04.
Article
en En
| MEDLINE
| ID: mdl-26828378
ABSTRACT
C4 photosynthesis is more efficient than C3 photosynthesis for two reasons. First, C4 plants have evolved a repertoire of C4 enzymes to enhance CO2 fixation. Second, C4 leaves have Kranz anatomy with a high vein density in which the veins are surrounded by one layer of bundle sheath (BS) cells and one layer of mesophyll (M) cells. The BS and M cells are not only functionally well differentiated, but also well-coordinated for rapid transport of photo-assimilates between the two types of photosynthetic cells. Recent comparative transcriptomic and anatomical analyses of C3 and C4 leaves have revealed early onset of C4-related processes in leaf development, suggesting that delayed mesophyll differentiation contributes to higher C4 vein density, and have identified some candidate regulators for the higher vein density in C4 leaves. Moreover, comparative transcriptomics of maize husk (C3) and foliar leaves (C4) has identified a cohort of candidate regulators of Kranz anatomy development. In addition, there has been major progress in the identification of transcription factor binding sites, greatly increasing our knowledge of gene regulation in plants.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Proteínas de Plantas
/
Hojas de la Planta
/
Transcriptoma
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Curr Opin Plant Biol
Asunto de la revista:
BOTANICA
Año:
2016
Tipo del documento:
Article
País de afiliación:
Taiwán