April 2010, Volume 52 Issue 5, Pages 434ĘC514.

Cover Caption: MAP Kinase in Environmental Responses
The mitogen-activated protein kinase (MAP Kinase) cascade is one of the major pathways by which extracellular stimuli are transduced into intracellular responses in plants. MAP Kinases have been shown to play important roles in plant growth and development, and in responding to environmental stresses. In this issue, Wang et al. (442ĘC452) report the isolation and functional analysis of a novel MAP Kinase gene, ZmMPK3, from maize. The expression profile and kinase activity suggest that ZmMPK3 is involved in delivering various stress signals in maize leaves.

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