Contents

08 May 2009
Vol 324, Issue 5928

About The Cover

Cover image expansion

COVER Interactions between microbes and plants can vary widely, depending upon the context and the partners of the interaction. An Editorial on page 691 and a collection of Perspectives starting on page 742 discuss recent advances in our understanding of the biochemistry, signaling, and ecosystem dynamics that reflect how microbes and plants interact. Illustration: Chris Bickel