期刊
PLANT CELL REPORTS
卷 29, 期 12, 页码 1377-1389出版社
SPRINGER
DOI: 10.1007/s00299-010-0923-8
关键词
Arabidopsis; BSCTV C4; Cell cycle; Pathomorphogenesis; Transgenic plants
资金
- Rural Development Administration, Republic of Korea [20070401034028]
- Rural Development Administration (RDA), Republic of Korea [20070401034028] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The Curtovirus C4 protein is required for symptom development during infection of Arabidopsis. Transgenic Arabidopsis plants expressing C4 from either Beet curly top virus or Beet severe curly top virus produced phenotypes that were similar to symptoms seen during infection with wild-type viruses. The pseudosymptoms caused by C4 protein alone were novel to transgenic Arabidopsis and included bumpy trichomes, severe enations, disorientation of vascular bundles and stomata, swelling, callus-like structure formation, and twisted siliques. C4 induced abnormal cell division and altered cell fate in a variety of tissues depending on the C4 expression level. C4 protein expression increased the expression levels of cell-cycle-related genes CYCs, CDKs and PCNA, and suppressed ICK1 and the retinoblastoma-related gene RBR1, resulting in activation of host cell division. These results suggest that the Curtovirus C4 proteins are involved actively in host cell-cycle regulation to recruit host factors for virus replication and symptom development.
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