Expressional profiling of genes related to pollination and fertilization in rice.
C R Acad Sci III
; 324(12): 1111-6, 2001 Dec.
Article
in En
| MEDLINE
| ID: mdl-11803811
ABSTRACT
Pollination and fertilization are key steps leading to seed and fruit formation. To obtain genes involved in pollination and fertilization in rice, an RNA fingerprinting technique, cDNA-AFLP (amplified fragment length polymorphism), was used to generate transcript profiles related to pollination. Of 15,000 cDNA fragments inspected, 2,100 showed altered expression in the pollinated pistil, of which about 1/5 were up-regulated (URP) and the rest down-regulated (DRP), suggesting that gene repression is a predominant mode of gene regulation in the pollinated pistil. Over 200 URP genes were sequenced and databank searches revealed that 70% of them represented previously unnoticed rice genes. DNA blot analysis of 20 URP genes detected no restriction fragment length polymorphisms (RFLP) between two relatively distant rice varieties, suggesting that the URP genes are highly conserved and likely play important roles in pollination and fertilization. Furthermore, two genes, URP47 and URP63, probably encoding an ADP-ribosylation factor and a membrane transporter, respectively, in relation to pollination were discussed.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pollen
/
Oryza
/
Gene Expression Profiling
Language:
En
Journal:
C R Acad Sci III
Journal subject:
BIOLOGIA
Year:
2001
Document type:
Article
Affiliation country:
China