Plant root development related protein ZmNR1 and coding gene thereof

Abstract

The invention discloses a plant root development related protein ZmNR1 and a coding gene thereof. The protein provided by the invention is a protein of (1) or (2) as follows: (1) a protein comprising amino acid sequences shown by the sequence 2 in a sequence table; and (2) a plant root development related protein derived from (1) by replacing and / or deleting and / or adding one or more amino acid residues to the amino acid residue sequence of the sequence 2 in the sequence table. The expression of the coding gene of the protein in arabidopsis can obviously increase the root size of Arabidopsis. An MADS-box transcription factor ZmNR1 gene regulated and controlled by nitrates and capable of controlling the growth and development of the plant root system is cloned from maize, a gene resource with more characteristics and effects is provided for researching root improvement and high-efficient nutrient absorption and utilization of main crops, and the protein plays an important role in the research of plant root improvement and high-efficient nutrient absorption and utilization in gene engineering.

Description

technical field [0001] The invention relates to the technical field of genetic engineering, in particular to a MADS-box transcription factor capable of improving plant roots, its coding gene and its application. Background technique [0002] Nitrogen is one of the essential mineral nutrients for plants, and it is also an important limiting factor for plant growth and development in agricultural production. It is closely related to crop yield and quality. my country is the largest producer and consumer of nitrogen fertilizer in the world. A large amount of nitrogen fertilizer has made a huge contribution to the increase of crop yield in our country. However, with the gradual increase in the amount of chemical fertilizers used in food crops in my country, the yield-increasing effect of food crops and the nutrient use efficiency of chemical fertilizers have been continuously reduced, and this problem has become more significant after the 1990s. For cereal crops, the average u...

AI Technical Summary

Problems solved by technology

However, with the gradual increase in the amount of chemical fertilizers used in food crops in my country, the effect of fertilization on food crops and the nutrient use efficiency of chemical fertilizers have been continuously reduced. This problem has become more significant after the 1990s.

For cereal crops, the average utilization rate of nitrogen fertilizer in the world is only 33% (Raun and Johnson, 1999, Agron.J.91: 357-363). Nearly 70% of nitrogen in nitrogen fertilizer is lost through nitrate leaching and ammonia volatilization. The three major functions of denitrification and denitrification are lost from the soil, which not only causes a huge waste of resources, but also produces serious environmental pollution and ecological problems

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