'Candidatus Phytoplasma asteris', a novel phytoplasma taxon associated with aster yellows and related diseases

被引：271

作者：

Lee, IM ^{[1
]}

Gundersen-Rindal, DE

Davis, RE

Bottner, KD

Marcone, C

Seemüller, E

机构：

[1] USDA, ARS, Mol Plant Pathol Lab, Beltsville, MD 20705 USA

[2] Insect Biocontrol Lab, Beltsville, MD 20705 USA

[3] Univ Basilicata, Dept Biol Difesa & Biotecnol Agro Forestali, I-85100 Potenza, Italy

[4] Biol Bundesanstalt, Inst Pflanzenschutz Obstbau, D-69221 Dossenheim, Germany

来源：

INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY | 2004年 / 54卷

关键词：

D O I：

10.1099/ijs.0.02843-0

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

Aster yellows (AY) group (16Srl) phytoplasmas are associated with over 100 economically important diseases worldwide and represent the most diverse and widespread phytoplasma group. Strains that belong to the AY group form a phylogenetically discrete subclade within the phytoplasma clade and are related most closely to the stolbur phytoplasma subclade, based on analysis of 16S rRNA gene sequences. AY subclade strains are related more closely to their culturable relatives, Acholeplasma spp., than any other phytoplasmas known. Within the AY subclade, six distinct phylogenetic lineages were revealed. Congruent phylogenies obtained by analyses of tuf gene and ribosomal protein (r(p)) operon gene sequences further resolved the diversity among AY group phytoplasmas. Distinct phylogenetic; lineages were identified by RFLP analysis of 16S rRNA, tuf or rp gene sequences. Ten subgroups were differentiated, based on analysis of rp gene sequences. It is proposed that AY group phytoplasmas represent at least one novel taxon. Strain OAY, which is a member of subgroups 16Srl-B, rpl-B and tufl-B and is associated with evening primrose (Oenothera hookeri) virescence in Michigan, USA, was selected as the reference strain for the novel taxon 'Candidatus Phytoplasma asteris'. A comprehensive database of diverse AY phytoplasma. strains and their geographical distribution is presented.

引用

页码：1037 / 1048

页数：12

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