Alkane generating key gene muton derived from blue algae and application of alkane generating key gene muton

The invention discloses an alkane generating key gene muton derived from blue algae. A gene has a nucleotide sequence as shown in SEQ ID NO: 1 or a nucleotide sequence complementary with the nucleotide sequence as shown in SEQ ID NO: 1. The invention further discloses a method for preparing the alkane generating key gene muton by taking a plasmid pEASY-1594-1711 constructed by a wild alkane generating key gene derived from blue algae as a template and an application of the alkane generating key gene muton. A hydrocarbon generating gene is a muton of a wild hydrocarbon generating gene derived from blue algae, and the total biological alkane yield of a bacterial strain based on the muton of the hydrocarbon generating gene is increased by 2.9 times as comparison with that of the wild hydrocarbon generating gene, so that the biological alkane yield is increased, the biological oil production cost is reduced, and the commercialization process of biological oil production can be favorably accelerated. 本发明公开种源于蓝藻的产烷