Nine things to know about elicitins. Issue 4 (1st September 2016)

• Record Type: Journal Article
• Authors: Derevnina, Lida; Dagdas, Yasin F.; De la Concepcion, Juan Carlos; Bialas, Aleksandra; Kellner, Ronny; Petre, Benjamin; Domazakis, Emmanouil; Du, Juan; Wu, Chih‐Hang; Lin, Xiao; Aguilera‐Galvez, Carolina; Cruz‐Mireles, Neftaly; Vleeshouwers, Vivianne G. A. A.; Kamoun, Sophien
• Is Part Of: New phytologist. Volume 212:Issue 4(2016)
• Page Start: 888
• Page End: 895
• Publication Date: 2016-09-01
• Subjects: cell death -- elicitin response (ELR) -- elicitor -- hypersensitive response (HR) -- INF1 -- microbe‐associated molecular patterns (MAMPs) -- oomycetes; Botany -- Periodicals; 580
• DOI: 10.1111/nph.14137
• Languages: English
• ISSNs: 0028-646X

Abstract

Summary: Elicitins are structurally conserved extracellular proteins in Phytophthora and Pythium oomycete pathogen species. They were first described in the late 1980s as abundant proteins in Phytophthora culture filtrates that have the capacity to elicit hypersensitive (HR) cell death and disease resistance in tobacco. Later, they became well‐established as having features of microbe‐associated molecular patterns (MAMPs) and to elicit defences in a variety of plant species. Research on elicitins culminated in the recent cloning of the elicitin response (ELR) cell surface receptor‐like protein, from the wild potato Solanum microdontum, which mediates response to a broad range of elicitins. In this review, we provide an overview on elicitins and the plant responses they elicit. We summarize the state of the art by describing what we consider to be the nine most important features of elicitin biology. Contents Summary 888 I. Introduction 888 II. Elicitins form a diverse family of secreted proteins in oomycetes 889 III. Elicitins bind sterols and other lipids 889 IV. Elicitins have features of MAMPs 889 V. Plants from different botanical families respond to elicitins 891 VI. Cell surface plant proteins mediate broad‐spectrum responses to elicitins 891 VII. Elicitins induce a sustained oxidative burst that leads to HR cell death 891 VIII. Plant response to elicitins does not always include HR cell death 892 IX. Plant response to elicitins enhances disease resistance 892 X. Several oomycete effectors suppress elicitin response 893 XI. Closing remarks: there is much we still do not know about elicitins and their receptors 893 Acknowledgements 893 References 893 Abstract : See also the Commentary on this article by Ökmen & Doehlemann, 211: 799–801 .