A TOM1 homologue is required for multiplication of Tobacco mosaic virus in Nicotiana benthamiana.
The AtTOM1 gene of Arabidopsis thaliana had been shown to be essential for the efficient multiplication of Tobacco mosaic virus (TMV) in A. thaliana. In this study, we cloned an AtTOM1-like gene from Nicotiana benthamiana named as NbTOM1. Sequence alignment showed that NbTOM1 is closely related to AtTOM1 homologues of N. tabacum and Lycopersicon esculentum with 97.2% and 92.6% nucleotide sequence identities, respectively. Silencing of NbTOM1 by a modified viral satellite DNA-based vector resulted in complete inhibition of the multiplication of TMV in N. benthamiana. The result suggests that inhibition of NbTOM1 via RNA silencing is a potentially useful method for generating TMV-resistant plants.
Chen
Bing
B
State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou 310029, China.
Jiang
Jin-hua
JH
Zhou
Xue-ping
XP
D029681:Arabidopsis Proteins / Q000235:genetics; D003001:Cloning, Molecular; D008565:Membrane Proteins / Q000235:genetics; D010940:Plant Proteins / Q000037:antagonists & inhibitors / Q000235:genetics*; D034622:RNA Interference; D018749:RNA, Plant; D012367:RNA, Viral; D017385:Sequence Homology; D014026:Nicotiana / Q000378:metabolism / Q000821:virology*; D014027:Tobacco Mosaic Virus / Q000502:physiology*; D014779:Virus Replication
D029681:Arabidopsis Proteins; D008565:Membrane Proteins; D010940:Plant Proteins; D018749:RNA, Plant; D012367:RNA, Viral; C413802:TOM1 protein, Arabidopsis