Figure 4

Transmission of hypovirulence and its associated traits of strain XG36-1. A, the colony of hygromycin-resistant gene labelled strain XG36-1A34^R was converted when dual culturing with hypovirulent strain XG36-1(red triangle). B, the hyphae at the colony margin of strain XG36-1A34^R branched excessively as strain XG36-1 did. C, converted strain XG36-1A34^R also lost virulence on detached rapeseed leaves.