A new cochlioquinone from endophytic fungus Bipolaris sorokiniana derived from Pogostemon cablin and its bioactivity Isolation and identification of the pathogens causing wheat common root rot in Shandong Province Isolation, identification and pathogenicity of the pathogens of wheat black point in Henan Province Development and Characterization of SN1 Transgenic Wheat Plants with Enhanced Resistance to Rhizoctonia cerealis and Bipolaris sorokiniana