Open AccessComplementary-sense gene regulation in beet curly top virus-SpCT
Author(s) -
Jennifer Guerrero,
Garry Sunter
Publication year - 2019
Publication title -
archives of virology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.943
H-Index - 110
eISSN - 1432-8798
pISSN - 0304-8608
DOI - 10.1007/s00705-019-04385-9
Subject(s) - biology , gene , virus , virology , stop codon , genetics
A 278-bp region upstream of the beet curly top virus-SpCT (BCTV-SpCT) C2/C3 genes is necessary for promoter activity and exhibits significant sequence similarity to AL2/3 promoter sequences in tomato golden mosaic virus (TGMV). Maximal expression of the downstream C2/3 genes in BCTV-SpCT requires the presence of the C1 protein, which is supported by observations that mutation of the initiator codon for C1 results in decreased C2/C3 expression. This is similar to TGMV and cabbage leaf curl virus, where AL1 is required for maximal AL2/3 expression. Together, these data suggest a common strategy for complementary-sense gene regulation amongst curtoviruses and begomoviruses.