Application of SIP7 gene and encoded protein thereof in regulation and control of panicle type and grain type of plant

Abstract

The invention discloses an SIP7 gene and an application of an encoding protein thereof in regulation and control of a panicle type and a grain type of a plant, and particularly discloses a method for cultivating a plant with a changed panicle type and grain type, which comprises the following steps: inhibiting expression of the SIP7 gene in a starting plant so as to change the panicle type and the grain type of the plant; the SIP7 gene is nucleic acid for coding SIP7 protein; the SIP7 protein is a protein as shown in SEQ ID NO: 1. It is found and proved that after the full-length or partial section of the SIP7 gene is knocked out through the CRISPR / Cas9 technology, the plant height and tillering of rice are not remarkably changed, the spike length, the number of primary branches, the number of secondary branches and the number of grains per spike are remarkably reduced, and the grain length and the grain length-width ratio are remarkably increased, so that the method can be used for changing the spike type and the grain type of the rice, and the yield of the rice is improved by finding / creating excellent equipotential. The rice panicle shape and grain shape are improved, the yield and variety of the rice can be increased, and the important economic value is achieved.

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