The invention discloses a
Coix lacroyma-jobi L.var.ma-yuen (Roman.) Stapf
endophytic fungus which is obtained from a living
plant body of the
Poaceae coix plant Coix lacroyma-jobi L.var.ma-yuen (Roman.) Stapf through the
endophytic fungus separation and purification technology, and is identified through the
microbial taxonomy to belong to the Epichloe bromicola.The
bacterial strain is preserved in the China General
Microbiological Culture Collection Center, and the preservation number is CGMCC NO.11410.By co-culturing a
Coix lacroyma-jobi L.var.ma-yuen (Roman.) Stapf
endophytic fungus strain, Coix lacroyma-jobi L.var.ma-yuen (Roman.) Stapf and Thale Cress, growth of Coix lacroyma-jobi L.var.ma-yuen (Roman.) Stapf and Thale Cress is promoted, growth of main roots is restrained, development of lateral roots is promoted, plants can more easily derive nutrients and grow, the
biomass of Thale Cress is improved, and the Coix lacroyma-jobi L.var.ma-yuen (Roman.) Stapf endophytic
fungus is an important
microorganism for promoting growth of Coix lacroyma-jobi L.var.ma-yuen (Roman.) Stapf, Thale Cress and other gramineous plants.