Gene and protein encoded by rice root growth and development control gene OsSPR1

Abstract

The invention relates to the plant gene engineering field, aiming at providing protein encoded by a rice root growth and development control gene OsSPR1 and a gene for encoding the protein. The protein has an amino acid sequence shown by SEQ ID NO:2 and a nucleotide sequence shown by SEQ ID NO:1. In the invention, a rice mutant with a short adventitious root and a short branch root is taken as a research material to determine that the gene is involved in regulating and controlling growth and development of the rice root; the functional deletion mutant of the gene shows reduced ferric content of blades, and the ferric content in the root is in accordance with that of wild rice; and recovery of expression of the gene can recover the ferric content in the blades, thus showing that the gene can regulate and control the ferric content in the blades. The invention provides a molecular regulation and control mechanism for rice root growth and development and ferric ion in-vivo transport, and provides a foundation for regulating and controlling a rice root structure and the ferric content by a genetic engineering method.

Description

technical field

[0001] The invention belongs to the field of plant genetic engineering. Specifically, the present invention relates to the rice root length regulation gene OsSPR1 and its application. Background technique

[0002] The root system of plants plays a very important role in the growth of higher plants. It not only provides physical support for the aboveground parts, but also absorbs nutrients and water from the soil to maintain the growth and development of plants. The root system of plants can be divided into two categories, the tap root system of most dicotyledonous plants and the fibrous root system of most monocotyledonous plants. The root system of dicots is mainly composed of tap roots and lateral roots; while the root system of monocots is mainly composed of tap roots, adventitious roots and lateral roots. As one of the most important food crops in the world, rice has a root system consisting of seed roots, a large number of adventitious roots and latera...

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