A gene OsHT1 controlling rice tillering and applications thereof

Abstract

A gene OsHT1 controlling rice tillering is disclosed. The gene is derived from oryza sativa L. cv. Zhonghua 11. The nucleotide sequence of the gene is SEQ ID NO.1, the nucleotide sequence of the open reading frame of the gene is SEQ ID NO.2, and an amino acid sequence encoded by cDNA of the gene is SEQ ID NO.3. Phenotypic analysis shows that after overexpression of the gene OsHT1, the tiller number of rice is increased from about 20-27 to 135-145, plant height is reduced and the setting rate is not changed. The gene OsHT1 is a critical regulating gene for rice tillering, and therefore rice tillering characters can be regulated by utilizing a genetic engineering technology, and the gene has important application value in the field of regulating and controlling plant shape characters on purpose by utilizing a bioengineering technology, and adjusting a plant population structure to achieve a high yield and good quality. The gene can be used for cultivating high-yield varieties of rice, wheat, and other cereal crops.

Description

technical field [0001] The invention belongs to the field of plant biotechnology, and relates to an essential gene for plant tillering and application thereof, in particular to a gene OsHT1 ​​for controlling rice tillering and application thereof. Background technique [0002] Rice is one of the main food crops in China and plays an important role in my country's agricultural production. With the rapid increase of population and the continuous reduction of cultivated land area in our country, increasing rice production plays a pivotal role in ensuring our country's food security and promoting the development of national economy. Breeding high-yield rice varieties with ideal plant type is an important aspect of increasing rice yield, and it is also the goal that grain producers have been pursuing. Rice yield is a complex quantitative trait, which mainly depends on the number of effective tillers, the number of grains per panicle and thousand-grain weight. Tillering is a spe...

AI Technical Summary

Problems solved by technology

TAD1 ( Tillering and Dwarf1 ) gene encodes a coactivator protein of the anaphase-promoting complex (APC / C for short), which acts on the upstream of MOC1, can specifically recognize MOC1 and recruit MOC1 to the APC / C complex, resulting in MOC1 is ubiquitinated and degraded in a manner dependent on cell cycle progression, resulting in abnormal initiation of axillary meristems and reduced number of tillers (Xu et al., 2011)

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