Report of the sexual stage of Lecanicillium longisporum in Melanaphis sacchari
DOI:
https://doi.org/10.33885/sf.2018.47.1195Keywords:
teleomorph, anamorph, perithecia, yellow aphid, Colima, MexicoAbstract
Background: During the search for natural enemies of Melanaphis sacchari in Tecomán, Colima, México, mycosed populations of yellow aphid in sorghum were observed; three months later, fungal structures of sexual reproduction were found developing in the abdominal dorsal region of some aphids.
Objective: To make known for the first time the teleomorphic state of Lecanicillium longisporum developed on M. sacchari in Colima, México.
Methods: Microscopy techniques were used for the morphological analysis of the perithecia found on M. sacchari. ITS region and the RPB1 gene were used for molecular characterization.
Results and conclusions: Perithecia found in mummified aphids with L. longisporum are morphologically different from Cordiceps confragosa and other species reported as Lecanicillium teleomorphs. ITS and RPB1 sequences showed 100% similarity to the sequences of the anamorph che-cnrcb 620 (its: kx426564; rpb1: kx426566) of L. longisporum. The molecular identification confirmed that the perithecia correspond to the teleomorph of the same species being the first report of the sexual stage of L. longisporum.
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