This study was carried out to facilitate the functional analysis of rice genes. Some 297 insertion plants (1.7%) of the entire lines with the endogenous retrotransposon Tos17 were produced. Phenotypes of these plants in the S2 genera-tion were observed in the field according to different leaf types. Rolling leaf mutants showed thinner sclerenchyma-tous cells, defective arrangement of vascular bundles, and well-formed bulliform cells as compared to the parental cultivar. Two new copies of Tos17 were detected in the rolling leaf type. In the new leaf type, the copy number and activation of Tos12, 15 did not appear as ‘Ilpum’. Flanking sequence tag (FST) analysis of Tos17 in the rolling leaf mutant indicated that new copies of Tos17 were transposed on chromosomes 11 and 12. Annotated homologues of the tagging genes on chromosome 11 were arabinoxylan rabinofuranohydrolase isoenzyme AXAH-I and II. The tagging gene in chromosome 12 was highly correlated with 6 kinds of genes including a transcript regulated factor and a rough sheath 2-like protein. This rolling leaf and flanking sequence data will stimulate the functional analysis of rice genes.
KeywordsTissue CultureSomaclonal VariationMutantOpaque EndospermTos Element
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