Abstract
Understanding a key gene for thermosensitive genic male sterility in rice.
Highlights
A joint research team led by Chuxiong Zhuang of South China Agricultural University and Xiaofeng Cao of Institute of Genetics and Development Biology, Chinese Academy of Sciences published their work on the cloning and molecular characterization of the gene thermosensitive genic male sterile 5 in rice in Nature Communications [1]
Photoperiod-sensitive genic male sterile lines (PGMS) and thermo-sensitive genic male sterile lines (TGMS) have been the two main types used in two-line hybrid rice breeding
The mutation of a single nucleotide between the wild type Nongken 58 and PGMS Nongken 58S increased the methylation level in the promoter region of LDMAR, which suppressed the transcription of LDMAR under long-day conditions, resulting in male sterility
Summary
The sterile male-sterile line used in two-line system becomes fertile under particular growth environmental conditions, which greatly simplifies the process of hybrid breeding and saves tremendous cost in seed production. Photoperiod-sensitive genic male sterile lines (PGMS) and thermo-sensitive genic male sterile lines (TGMS) have been the two main types used in two-line hybrid rice breeding.
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