Fungal and bacterial endosymbionts of eared leafhoppers of the subfamily Ledrinae (Hemiptera: Cicadellidae)

Takanori Nishino, Masahiko Tanahashi, Chung Ping Lin, Ryuichi Koga, Takema Fukatsu*


研究成果: 雜誌貢獻期刊論文同行評審

32 引文 斯高帕斯(Scopus)


In general, leafhoppers (Hemiptera: Cicadellidae) possess a pair of bacteriomes in the abdomen, which harbor two types of obligate bacterial symbionts: a very ancient Sulcia symbiont and another ancient Nasuia-allied co-symbiont (or a younger Baumannia co-symbiont). However, when we inspected three eared leafhoppers of the subfamily Ledrinae, namely Ledra auditura Walker, Ledropsis discolor (Uhler) and Tituria angulata (Matsumura), L. discolor harbored only Sulcia symbiont while L. auditura and T. angulata possessed no bacterial symbionts. Instead, all the species possessed specialized cells full of yeast-like fungal symbionts within fat bodies. Molecular phylogenetic analysis revealed that the fungal symbionts are placed within the entomoparasitic fungal genus Ophiocordyceps (Ascomycota: Hypocreales: Ophiocordycipitaceae). These results suggest the possibility that (1) the fungal symbiont was acquired in the evolutionary course of the Ledrinae, (2) the original fungus was likely an entomoparasite of the genus Ophiocordyceps, (3) the fungal symbiont replaced the Nasuia-allied symbiont in an ancestral lineage, and (4) even the ancient Sulcia symbiont was finally lost and taken over by the fungal symbiont. Meanwhile, the possibility of multiple independent fungal acquisitions from closely related entomoparasitic Ophiocordyceps fungi cannot be excluded. Our finding uncovers an evolutionary process from a prokaryotic essential symbiosis to a eukaryotic one.

頁(從 - 到)465-477
期刊Applied Entomology and Zoology
出版狀態已發佈 - 2016 8月 1

ASJC Scopus subject areas

  • 昆蟲科學


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