title: [Detection and identification of phytoplasma strain associated with periwinkle yellows].
abstract: A 1.2kb and 1.3kb DNA fragments were amplified in DNA samples extracted from periwinkle exhibiting yellows naturally. The amplified fragments were cloned, sequenced and compared with other phytoplasma strains. The results showed that the 16S rDNA and ribosomal protein gene of periwinkle yellows phytoplasma consist of 1239bp and 1244bp, respectively. They all shared high homology (higher than 97.5%) with phytoplasma strains of 16S rI group. Thus, the result made it clear that the phytoplasma strain of periwinkle yellows (PY) is one of the members of phytoplasma 16SrI group.
authors.affiliation: Key Laboratory for Plant Pathology of Yunnan Province, Yunnan Agricultural University, Kunming 650201, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Cai
authors.forename: Baohua
authors.initials: B
authors.lastname: Kong
authors.forename: Hairu
authors.initials: H
authors.lastname: Chen
mesh_terms: D030008:Catharanthus / Q000382:microbiology*; D045582:Phytoplasma / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D016133:Polymerase Chain Reaction; D012336:RNA, Ribosomal, 16S / Q000235:genetics
chemical_list: D012336:RNA, Ribosomal, 16S