Departamento de Fitopatologia, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil.
Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil.
Fungal Biol. 2024 Aug;128(5):1917-1932. doi: 10.1016/j.funbio.2024.05.004. Epub 2024 May 29.
Here, we report on a Cordyceps species entering into a multi-trophic, multi-kingdom association. Cordyceps cateniannulata, isolated from the stem of wild Coffea arabica in Ethiopia, is shown to function as an endophyte, a mycoparasite and an entomopathogen. A detailed polyphasic taxonomic study, including a multilocus phylogenetic analysis, confirmed its identity. An emended description of C. cateniannulata is provided herein. Previously, this species was known as a pathogen of various insect hosts in both the Old and New World. The endophytic status of C. cateniannulata was confirmed by re-isolating it from inoculated coffee plants. Inoculation studies have further shown that C. cateniannulata is a mycoparasite of Hemileia vastatrix, as well as an entomopathogen of major coffee pests; infecting and killing Hypothenemus hampei and Leucoptera coffeella. This is the first record of C. cateniannulata from Africa, as well as an endophyte and a mycoparasite. The implications for its use as a biocontrol agent are discussed.
在这里，我们报告了一种进入多营养、多领域共生关系的虫草属物种。从埃塞俄比亚野生阿拉伯咖啡茎中分离出的弯颈虫草被证明是一种内生菌、真菌寄生菌和昆虫病原真菌。详细的多相分类学研究，包括多基因系统发育分析，证实了它的身份。本文提供了对弯颈虫草的修正描述。以前，这种物种在新旧世界的各种昆虫宿主中被认为是一种病原体。通过从接种的咖啡植株中重新分离出弯颈虫草，确认了其内生菌的地位。接种研究进一步表明，弯颈虫草是咖啡叶锈病菌的真菌寄生菌，也是咖啡主要害虫的昆虫病原真菌；感染并杀死咖啡刺瘿螨和咖啡白轮蚧。这是弯颈虫草在非洲的首次记录，也是一种内生菌和真菌寄生菌。讨论了其作为生物防治剂的应用意义。
