| infection dynamics of coexisting beta- and gammaproteobacteria in the nested endosymbiotic system of mealybugs. | we investigated the infection dynamics of endosymbiotic bacteria in the developmental course of the mealybugs planococcus kraunhiae and pseudococcus comstocki. molecular phylogenetic analyses identified a betaproteobacterium and a gammaproteobacterium from each of the mealybug species. the former bacterium was related to the beta-endosymbionts of other mealybugs, i.e., "candidatus tremblaya princeps," and formed a compact clade in the betaproteobacteria. meanwhile, the latter bacterium was relat ... | 2008 | 18469124 |
| molecular identification of mealybugs (hemiptera: pseudococcidae) found on korean pears. | mealybugs are under a strict regulation at foreign trades of agricultural products because they are one of the most economically damaging groups of insects on food crops and ornamental plants. however, the absence of morphological characteristics enabling the discrimination of early life stages often cause a significant delay or rejection of a shipment when infested fruit is discovered, causing significant economic loss. a polymerase chain reaction-based method for species identification was dev ... | 2010 | 20214364 |
| endocrocin and its derivatives from the japanese mealybug planococcus kraunhiae. | the japanese mealybug, planococcus kraunhiae, is suitable as a model insect for biosynthetic studies on mealybug pigments. four yellow pigments, including two novel ones, were isolated from the mealybug bodies and characterized as endocrocin, a dicarboxylic acid named fujikonaic acid (1), emodin 1-o-β-d-glucopyranoside and 7-hydroxyemodin 1-o-β-d-glucopyranoside (2). the enzymatic activity of emodin 1-o-glucosyltransferase was observed in the extracts of insect bodies. | 2011 | 21512234 |
| differential juvenile hormone variations in scale insect extreme sexual dimorphism. | scale insects have evolved extreme sexual dimorphism, as demonstrated by sedentary juvenile-like females and ephemeral winged males. this dimorphism is established during the post-embryonic development; however, the underlying regulatory mechanisms have not yet been examined. we herein assessed the role of juvenile hormone (jh) on the diverging developmental pathways occurring in the male and female japanese mealybug planococcus kraunhiae (kuwana). we provide, for the first time, detailed gene e ... | 2016 | 26894583 |