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Genome-wide Identification, Classification, and Expression Analysis of the Receptor-Like Protein Family in Tomato
Plant Pathol. J. 2018;34:435-444
Published online October 1, 2018
© 2018 The Korean Society of Plant Pathology.

Won-Hee Kang1 and Seon-In Yeom1,2*

1Institute of Agriculture & Life Science, Gyeongsang National University, Jinju 52828, Korea
2Department of Agricultural Plant Science, Division of Applied Life Science (BK21 Plus program), Gyeongsang National University, Jinju 52828, Korea
Correspondence to: Phone) +82-55-772-1917, FAX) +82-55-772-1919
Seon-In Yeom
Received March 2, 2018; Revised May 21, 2018; Accepted June 1, 2018.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Receptor-like proteins (RLPs) are involved in plant development and disease resistance. Only some of the RLPs in tomato (Solanum lycopersicum L.) have been functionally characterized though 176 genes encoding RLPs, which have been identified in the tomato genome. To further understand the role of RLPs in tomato, we performed genome-guided classification and transcriptome analysis of these genes. Phylogenic comparisons revealed that the tomato RLP members could be divided into eight subgroups and that the genes evolved independently compared to similar genes in Arabidopsis. Based on location and physical clustering analyses, we conclude that tomato RLPs likely expanded primarily through tandem duplication events. According to tissue specific RNA-seq data, 71 RLPs were expressed in at least one of the following tissues: root, leaf, bud, flower, or fruit. Several genes had expression patterns that were tissue specific. In addition, tomato RLP expression profiles after infection with different pathogens showed distinguish gene regulations according to disease induction and resistance response as well as infection by bacteria and virus. Notably, Some RLPs were highly and/or unique expressed in susceptible tomato to pathogen, suggesting that the RLP could be involved in disease response, possibly as a host-susceptibility factor. Our study could provide an important clues for further investigations into the function of tomato RLPs involved in developmental and response to pathogens.
Keywords : gene expression profiling, host-susceptibility factor, plant-microbe interaction, receptor-like protein (RLP), Solanum lycopersicum

October 2018, 34 (5)
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