THB1, a putative transmembrane protein that causes hybrid breakdown in rice.

ABSTRACT: Hybrid breakdown is a post-zygotic reproductive isolation that hinders genetic exchange between species or populations in both animals and plants. Two complementary recessive genes, temperature sensitive hybrid breakdown1 (thb1) and thb2, cause hybrid breakdown in rice (Oryza sativa). The present study delimited the THB1 locus to a 9.1-kb sequence, containing a single gene encoding a putative transmembrane protein with unknown functions. Haplotype analysis of THB1 in the two core collections of 119 accessions revealed that these accessions were divided into 22 haplotypes. A test cross with thb2 carrier showed that haplotype2 (H2) was assigned to thb1 and was restricted to temperate japonica. A nonsynonymous nucleotide polymorph

SUBMITTER: Wakabayashi T 

PROVIDER: S-EPMC11561410 | biostudies-literature | 2024 Jun

REPOSITORIES: biostudies-literature