Short Communication

OsLYP4 and OsLYP6 play critical roles in rice defense signal transduction

Volume 8, Issue 2   February 2013
eLocation ID: e22980
http://dx.doi.org/10.4161/psb.22980
Keywords: defense-related gene, innate immunity, lysin motif-containing proteins, pattern recognition receptors, rice
Authors: Bing Liu, Jian-Feng Li, Ying Ao, Zhangqun Li, Jun Liu, Dongru Feng, Kangbiao Qi, Yanming He, Liexian Zeng, Jinfa Wang and Hong-Bin Wang

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Abstract:
Plant innate immunity relies on successful detection of trespassing pathogens through recognizing their microbe-associated molecular patterns (MAMPs) by pattern recognition receptors (PRRs) at the cell surface. We recently reported two rice lysin motif (LysM)-containing proteins, OsLYP4 and OsLYP6, as dual functional PRRs sensing bacterial peptidoglycan (PGN) and fungal chitin. Here we further demonstrated the important roles of OsLYP4 and OsLYP6 in rice defense signaling, as silencing of either LYP impaired the defense marker gene activation induced by either bacterial pathogen Xanthomonas oryzaecola or fungal pathogen Magnaporthe oryzae. Moreover, we found that OsLYP4 and OsLYP6 could form homo- and hetero-dimers, and could interact with CEBiP, suggesting an unexpected complexity of chitin perception in rice.

Received: November 19, 2012; Accepted: November 20, 2012; Published Online: January 8, 2013

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