PSK-induced cell proliferation requires the hormones auxin or cytokinin; o Some of the developmental distortions in roots induced on addition of ralf are reminiscent of impaired nonpeptide hormone-controlled processes 因此,揭开两种信号 cascades之间关系,将是非常 有趣的事。• PSK-induced cell proliferation requires the hormones auxin or cytokinin; • Some of the developmental distortions in roots induced on addition of RALF are reminiscent of impaired nonpeptide hormone-controlled processes. 因此，揭开两种信号cascades之间关系，将是非常 有趣的事