Light signals and flowering
Thomas, Brian (2006) Light signals and flowering. In: Symposium of the Society-for-Experimental-Biology held in Honour of Georges Bernier, Canterbury, ENGLAND, APR, 2006. Published in: JOURNAL OF EXPERIMENTAL BOTANY, 57 (13). pp. 3387-3393.Full text not available from this repository.
Official URL: http://dx.doi.org/10.1093/jxb/erl071
Physiological studies over a long period have shown that light acts to regulate flowering through the three main variables of quality, quantity, and duration. Intensive molecular genetic and genomic studies with the model plant Arabidopsis have given considerable insight into the mechanisms involved, particularly with regard to quality and photoperiod. For photoperiodism light, acting through phytochromes and cryptochromes, the main photomorphogenetic photoreceptors, acts to entrain and interact with a circadian rhythm of CONSTANS (CO) expression leading to transcription of the mobile floral integrator, FLOWERING LOCUS T (FT). The action of phytochromes and cryptochromes in photoperiodism is augmented by ZEITLUPE (ZTL) and FLAVIN-BINDING, KELCH REPEAT, F-BOX (FKF1) acting as accessory photoreceptors on entrainment and interaction, respectively. Light quality acts independently of the circadian system through Phytochromes B, D, and E to regulate FT. Light quantity effects, on the other hand, are still incompletely understood but are likely to be linked either directly or indirectly to patterns of assimilate partitioning and resource utilization within the plant.
|Item Type:||Conference Item (UNSPECIFIED)|
|Subjects:||S Agriculture > SB Plant culture|
|Journal or Publication Title:||JOURNAL OF EXPERIMENTAL BOTANY|
|Publisher:||OXFORD UNIV PRESS|
|Number of Pages:||7|
|Page Range:||pp. 3387-3393|
|Title of Event:||Symposium of the Society-for-Experimental-Biology held in Honour of Georges Bernier|
|Location of Event:||Canterbury, ENGLAND|
|Date(s) of Event:||APR, 2006|
Actions (login required)