Chinese Academy of Sciences

Win-All Hi-Tech Seed Co.,ltd.

Leedarson Lighting Co., Ltd.

Conghe Zhang

Hongbin Lin

Wenchang Huang

Hui Wang

Libin He

Yafeng Ye

Zhi Yan

Guangle Shen

Yuejin Wu

Yue Zhan

Binmei Liu

Liangzhi Tao

A mutation site of an ideal brittle culm mutant ibc in rice, a controlling gene IBC, and use thereof are provided. The controlling gene IBC has: (1) a nucleotide sequence shown in SEQ ID NO: 1 or SEQ ID NO: 2; or (2) a nucleotide sequence of a mutant, an allele, or a derivative generated by adding, substituting, inserting or deleting one or more nucleotides. The present disclosure further provides an encoded protein of the controlling gene IBC, a recombinant construct, a recombinant host cell, a method for embrittling culms in a rice ripening stage by using the controlling gene IBC, and use thereof. In a mutant with allelic variation in the gene IBC and loss of gene editing function, culms exhibit a brittle culm phenotype at the late ripening stage, leaves are not brittle, yield traits are excellent, and other agronomic traits are not obviously changed.

Mutation site of ideal brittle culm mutant ibc in rice, controlling gene IBC, and use thereof

Growing community of inventors

Hefei, China

Conghe Zhang