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New bacterium symbiont in the bacteriome of the leafhopper Yamatotettix flavovittatus Matsumura
Jureemart Wangkeeree,Panida Tewaruxsa,Yupa Hanboonsong 한국응용곤충학회 2019 Journal of Asia-Pacific Entomology Vol.22 No.3
The leafhopper Yamatotettix flavovittatus Matsumura is the vector of the phytoplasma pathogen that causes white leaf disease in sugarcane crops. This study aimed to identify the bacterial symbionts associated with Y. flavovittatus by amplifying, cloning, and sequencing their 16S rRNA genes. Two types of bacteria were present; one is Candidatus Sulcia muelleri (Bacteroidetes), a well-known ancient primary symbiont found in a diverse range of insects in Auchenorrhyncha suborder. The other is a member of Gammaproteobacteria that differed from all other members deposited in the GenBank database and was therefore named Candidatus Yamatotia cicadellidicola. These bacteria were present throughout the leafhopper life cycle and were found in 100% of the natural host populations examined. Fluorescent in situ hybridization analysis revealed that these bacteria were co-localized in the same bacteriome and present in the full-grown oocyte. Our main finding suggests the Ca. Y. cicadellidicola is a new type of symbiont that co-occurs with Ca. S. muelleri in the leafhopper Y. flavovittatus (Deltocephalinae subfamily).