期刊
PLANT PATHOLOGY
卷 64, 期 3, 页码 597-604出版社
WILEY-BLACKWELL
DOI: 10.1111/ppa.12306
关键词
Candidatus Phytoplasma palmicola'; coconut lethal yellowing phytoplasma; coconut palm (Cocos nucifera); Mozambique; phylogeny; population biology
资金
- Swedish International Development Agency (SIDA)
In this study, the putative phytoplasma species causing coconut lethal yellowing disease in Mozambique and Tanzania were characterized. The 16S rRNA and secA genes were sequenced. Phylogenetic analysis revealed that Mozambican coconut phytoplasmas belong to three different types: Candidatus Phytoplasma palmicola' 16SrXXII-A, a second strain that was previously isolated in Tanzania and Kenya (16SrIV-C), and a third strain that was different from all known lethal yellowing phytoplasma species. The third strain potentially represents a novel species and is closely related to pine phytoplasma. Co-infection with Ca. Phytoplasma pini'-related and Ca. Phytoplasma palmicola' 16SrXXII-A strains was observed. Furthermore, sequence variation in Ca. Phytoplasma palmicola' at the population level was consistent with purifying selection and population expansion.
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