Authors: Hoseong Choi Yeonhwa Jo Sen Lian KyoungMin Jo Hyosub Chu JuYeon Yoon SeungKook Choi KookHyung Kim Won Kyong Cho
Publish Date: 2015/04/23
Volume: 88, Issue: 3, Pages: 233-248
Abstract
The chrysanthemum is one of popular flowers in the world and a host for several viruses So far molecular interaction studies between the chrysanthemum and viruses are limited In this study we carried out a transcriptome analysis of chrysanthemum in response to three different viruses including Cucumber mosaic virus CMV Tomato spotted wilt virus TSWV and Potato virus X PVX A chrysanthemum 135K microarray derived from expressed sequence tags was successfully applied for the expression profiles of the chrysanthemum at early stage of virus infection Finally we identified a total of 125 70 and 124 differentially expressed genes DEGs for CMV TSWV and PVX respectively Many DEGs were virus specific however 33 DEGs were commonly regulated by three viruses Gene ontology GO enrichment analysis identified a total of 132 GO terms and of them six GO terms related stress response and MCM complex were commonly identified for three viruses Several genes functioning in stress response such as chitin response and ethylene mediated signaling pathway were upregulated indicating their involvement in establishment of host immune system In particular TSWV infection significantly downregulated genes related to DNA metabolic process including DNA replication chromatin organization histone modification and cytokinesis and they are mostly targeted to nucleosome and MCM complex Taken together our comparative transcriptome analysis revealed several genes related to hormone mediated viral stress response and DNA modification The identified chrysanthemums genes could be good candidates for further functional study associated with resistant to various plant viruses
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