Brote Grande, A New Phytoplasma Associated Disease of Chile Peppers in the Desert Southwest

Fig. 5. Neighbor joining phylogenetic tree of 16S rRNA and ITS region sequences showing relationships between the brote grande associated phytoplasma and previously described phytoplasmas. The tree was made using the Tamuri-Nei distance model with 1000× bootstrapping using Acholeplasma laidlawii (Acho l)16S rRNA and ITS region sequence as the outgroup. (A) Phylogenetic tree with representatives of all described classes of phytoplasmas. Phytoplasma names are listed as abbreviations with Genbank accession numbers at branch tips. Bootstrap consensus support values are indicated at nodes. Corresponding 16Sr rRNA groupings are indicated at the right. The brote grande branch is shaded in dark grey while stolbur of pepper and tomato big bud branches are shaded in light grey. Phytoplasma abbreviations: Alf WB = alfalfa witches broom, App prolif = apple proliferation, Ast Yel = aster yellows, Ash Yel = ash yellows, Chayote WB = chaote witches broom, Clover Phyl = clover phyllody, Clover YE = clover yellow edge, Elm Yel = elm yellows, Jujube WB = jujube witches broom, Phyto solani = phytoplasma solani, Phyto Tri = phytoplasma trifolii, Pot WB = potato witches broom, Pig pea WB = pigeon pea witches broom, S Pot WB = sweet potato witches broom, Stolbur = stolbur of pepper, Tom BB-Ark = tomato big bud isolate from Arkansas, Vinca vir = vinca virescence, brote grande = brote grande of pepper from New Mexico. (B) Enhanced view of the class VI phytoplasma group including the New Mexico and Arizona phytoplasmas from this study.



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Brote Grande, A New Phytoplasma Associated Disease of Chile Peppers in the Desert Southwest