Resistance to tobamoviruses in transgenic tobacco plants expressing the coat protein gene of pepper mild mottle virus (Korean isolate)
SCIE
SCOPUS
- Title
- Resistance to tobamoviruses in transgenic tobacco plants expressing the coat protein gene of pepper mild mottle virus (Korean isolate)
- Authors
- Lim, PO; Ryu, JS; Lee, HJ; Lee, U; Park, YS; Kwak, JM; Choi, JK; Nam, HG
- Date Issued
- 1997-06-30
- Publisher
- KOREAN SOC MOLECULAR BIOLOGY
- Abstract
- Red pepper, one of the most important vegetable crops in Korea, is severely affected by viral diseases causing 20-50% reduction in product yield, A pepper strain of tobacco mosaic virus (TMV-p) is the most common virus in red pepper, To study the molecular structure of the TMV-p virus, we generated cDNA clones of the viral genome, Partial sequencing of a few cDNA clones revealed that TMV-p shares a 98% identity at the nucleotide level with the Spanish isolate of pepper mild mottle virus (PMMV-s), This suggests that TMV-p should be reclassified as the Korean isolate of PMMV (PMMV-k). The coat protein (CP) gene together with the 3' untranslated region of the PMMV-k virus was obtained by reverse transcriptase-polymerase chain reaction (RT-PCR) using oligomers deduced from the sequence of PMMV-s, The sequence analysis of the CP gene and the 3' untranslated region further confirmed that PMMV-k is highly related to PMMV-s. The CP gene and the 3' untranslated region of PMMV-k were cloned into a plant expression vector and the construct was introduced into tobacco plants, The transgenic plants expressing the PMMV-k CP gene were delayed in developing systemic disease or failed to develop symptoms at all after inoculation with PMMV-k. Delay of symptoms was also observed when the plants were inoculated with TMV-OM which shares a 74% homology with PMMV-k in the amino acid sequence of the CP region, In a local lesion host, the CP expressing plants exhibited a greatly reduced number of necrotic lesions as compared to control plants after inoculation with TMV-OM, Our results show that CP-mediated viral resistance is readily applicable in the case of PMMV-k and can provide resistance to other viruses in the tobamovirus group.
- Keywords
- BANDING MOSAIC-VIRUS; NUCLEOTIDE-SEQUENCE; ANTISENSE RNA; POTYVIRUS; PROTECTION; INFECTION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/21280
- ISSN
- 1016-8478
- Article Type
- Article
- Citation
- MOLECULES AND CELLS, vol. 7, no. 3, page. 313 - 319, 1997-06-30
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.