| association with the syndrome "basses richesses" of sugar beet of a phytoplasma and a bacterium-like organism transmitted by a pentastiridius sp. | abstract the syndrome "basses richesses" of sugar beet (sbr) was first observed in 1991 in burgundy, france. a cixiid planthopper, pentastiridius beieri, has been proved to be involved in the transmission to sugar beet of a stolbur phytoplasma, which could be detected in some affected plants. in 2000, periwinkle and sugar beet exposed to field-collected cixiids developed symptoms similar to sbr on sugar beet. use of 4'-6-diamidino-2-phenylindole (dapi) staining and transmission electron microsco ... | 2002 | 18942951 |