Differential expression of gibberellin- and abscisic acid-related genes implies their roles in the bud activity-dormancy transition of tea plants.
Plant Cell Rep
; 37(3): 425-441, 2018 Mar.
Article
in En
| MEDLINE
| ID: mdl-29214380
ABSTRACT
KEY MESSAGE Thirty genes involved in GA and ABA metabolism and signalling were identified, and the expression profiles indicated that they play crucial roles in the bud activity-dormancy transition in tea plants. Gibberellin (GA) and abscisic acid (ABA) are fundamental phytohormones that extensively regulate plant growth and development, especially bud dormancy and sprouting transition in perennial plants. However, there is little information on GA- and ABA-related genes and their expression profiles during the activity-dormancy transition in tea plants. In the present study, 30 genes involved in the metabolism and signalling pathways of GA and ABA were first identified, and their expression patterns in different tissues were assessed. Further evaluation of the expression patterns of selected genes in response to GA3 and ABA application showed that CsGA3ox, CsGA20ox, CsGA2ox, CsZEP and CsNCED transcripts were differentially expressed after exogenous treatment. The expression profiles of the studied genes during winter dormancy and spring sprouting were investigated, and somewhat diverse expression patterns were found for GA- and ABA-related genes. This diversity was associated with the bud activity-dormancy cycle of tea plants. These results indicate that the genes involved in the metabolism and signalling of GA and ABA are important for regulating the bud activity-dormancy transition in tea plants.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Abscisic Acid
/
Meristem
/
Gene Expression Profiling
/
Camellia sinensis
/
Plant Dormancy
/
Gibberellins
Language:
En
Journal:
Plant Cell Rep
Journal subject:
BOTANICA
Year:
2018
Type:
Article
Affiliation country:
China