Identification and characterization of TcCRP1, a pollen tube attractant from Torenia concolor.
Ann Bot
; 108(4): 739-47, 2011 Sep.
Article
in En
| MEDLINE
| ID: mdl-21546430
ABSTRACT
BACKGROUND AND AIMS:
During sexual reproduction in higher angiosperms, the pollen tubes are directed to the ovules in the pistil to deliver sperm cells. This pollen tube attraction is highly species specific, and a group of small secreted proteins, TfCRPs, are necessary for this process in Torenia fournieri.METHODS:
A candidate pollen tube attractant protein in Torenia concolor, a related species of T. fournieri, was isolated and the attractant abilities between them were compared. KEYRESULTS:
TcCRP1, an orthologous gene of TfCRP1 from T. concolor, is expressed predominantly in the synergid cell. The gene product attracted pollen tubes in a concentration-dependent manner, but attracted fewer pollen tubes from the other species.CONCLUSIONS:
The results indicated that this class of CRP proteins is a common pollen tube attractant in Torenia species. The sequence diversity of these proteins is important for species-specific pollen tube attraction.
Full text:
1
Database:
MEDLINE
Main subject:
Plant Proteins
/
Lamiaceae
/
Pollen Tube
Type of study:
Diagnostic_studies
Language:
En
Year:
2011
Type:
Article