PMID- 12536297 OWN - NLM STAT- MEDLINE DCOM- 20030422 LR - 20151119 IS - 0304-8608 (Print) IS - 0304-8608 (Linking) VI - 148 IP - 1 DP - 2003 Jan TI - Molecular diversity of RNA-2 genome segments in pecluviruses causing peanut clump disease in West Africa and India. PG - 83-98 AB - The complete nucleotide sequence of RNA-2 genome segments of four isolates of Peanut clump virus (PCV) and two isolates of Indian peanut clump virus (IPCV) were determined. Comparisons among the complete RNA-2 sequences of six isolates from this study and two published earlier, revealed a high degree of variability in size (between 4290 and 4652 nucleotides) and nucleotide sequence identities (between 58 % and 79 %). Amino acid sequence alignments of the five open reading frames (ORF) showed that ORF 4, which encodes the second of the triple gene block proteins, is highly conserved (90 to 98 % identical) whereas the protein encoded by ORF 2, whose function is unknown, is less conserved (25 to 60 % identical). The coat protein of the eight isolates showed amino acid identities between 37 % and 89 % and contained several conserved residues. Phylogenetic comparisons, based on complete RNA-2 sequences, revealed that the eight isolates grouped into two distinct clusters with no geographical distinction between PCV and IPCV isolates. Phylogenetic tree topologies for individual ORFs showed an overall similarity with that obtained from entire RNA-2 sequences, although the relative positions of individual isolates vary within each cluster. The results indicate that there is substantial divergence among the RNA-2 genomes of pecluviruses and suggest that different proteins have evolved differently, possibly due to different selection pressures. FAU - Naidu, R A AU - Naidu RA AD - Department of Plant Pathology, University of Georgia, Athens, Georgia 30602, U.S.A. naidu@arhes.uga.edu FAU - Sawyer, S AU - Sawyer S FAU - Deom, C M AU - Deom CM LA - eng SI - GENBANK/AF447396 SI - GENBANK/AF447397 SI - GENBANK/AF447398 SI - GENBANK/AF447399 SI - GENBANK/AF447400 SI - GENBANK/AF447401 PT - Comparative Study PT - Journal Article PT - Research Support, U.S. Gov't, Non-P.H.S. PL - Austria TA - Arch Virol JT - Archives of virology JID - 7506870 RN - 0 (Capsid Proteins) RN - 0 (RNA, Viral) SB - IM MH - Africa, Western MH - Amino Acid Sequence MH - Arachis/*virology MH - Base Sequence MH - Capsid/chemistry MH - Capsid Proteins/chemistry MH - Conserved Sequence MH - *Genes, Viral MH - India MH - Molecular Sequence Data MH - Open Reading Frames MH - Phylogeny MH - Plant Viruses/chemistry/classification/*genetics/isolation & purification MH - RNA Viruses/chemistry/classification/*genetics/isolation & purification MH - RNA, Viral/*genetics/isolation & purification MH - Sequence Alignment EDAT- 2003/01/22 04:00 MHDA- 2003/04/23 05:00 CRDT- 2003/01/22 04:00 PHST- 2003/01/22 04:00 [pubmed] PHST- 2003/04/23 05:00 [medline] PHST- 2003/01/22 04:00 [entrez] AID - 10.1007/s00705-002-0900-9 [doi] PST - ppublish SO - Arch Virol. 2003 Jan;148(1):83-98. doi: 10.1007/s00705-002-0900-9.