| 'candidatus phytoplasma tamaricis', a novel taxon discovered in witches'-broom-diseased salt cedar (tamarix chinensis lour.). | salt cedar trees with pronounced witches'-broom symptoms were observed in their natural habitat in china. 16s rrna gene sequences unique to phytoplasmas were detected in every dna sample extracted from stem and leaf tissues of the symptomatic trees, revealing a direct association between phytoplasma infection and the salt cedar witches'-broom (scwb) disease. phylogenetic analysis of the scwb phytoplasma 16s rrna gene sequence indicated that the scwb phytoplasma belonged to a subclade consisting ... | 2009 | 19622657 |