Dong Yu^1,2 , Haibing Wu³ , Wentao Yang^1,2 , Pengtao Gong² , Youzhi Li¹ , Degang Zhao³

1 College of life Science and Technology, Guangxi University, Nanning, 530004; 2 Hainan Institute of Tropical Agricultural Resources, Hainan Key Lab of Crop Molecular Breeding , Sanya, 572025; 3 College of life Science and Technology, Guizhou University, Guizhou Key Lab of Agricutural Bioenginering, Guiyang, 550025;
Author    Correspondence author
Plant Gene and Trait, 2010, Vol. 1, No. 2   
Received: 10 Nov., 2010    Accepted: 30 Nov., 2010    Published: 28 Dec., 2010

A rice unilateral rolled leaf mutant, named B157 (HITAR Accession No RH615), was obtained in the rice mutant library derived from indica rice cultivar 808 radicated by ⁶⁰Co-γ ray, which has a obvious character of unilateral rolled leaf with the whole growth. In this paper we made three combinations to establish genetic populations for genetic analysis, the results confirmed that the mutant trait would be controlled by a single recessive gene, tentatively named as unilateral rolled leaf ( url1t). And then further mapped on the Chromosome I with the flanking markers RM272 and RI02526, The gene might be in the 2.6 cM interval from 0.6 cM of RM272 and 2.0 cM of RI02526. Further in silico analysis suggested that the physical distance of the interval would be 692.9 kb, which includes 78 putative genes including 14 genes ecoding unknown function expression proteins, 17 genes encoding unknown function putative and 47 gene encoding function proteins based on the annotations in TIGR database. We did notice that three putative genes related to plant cell division and auxesis, which might make us link to the mutant trait of unilateral rolled leaf.
 

Rice (Oryza sativa L.); Unilateral rolled leaf mutant; Genetic analysis; Gene mapping