Shared Escovopsis parasites between leaf-cutting and non-leaf-cutting ants in the higher attine fungus-growing ant symbiosis

Autor(es)

Meirelles, Lucas A. ^{[1, 2]} ; Solomon, Scott E. ^[3] ; Bacci, Jr., Mauricio ^[4] ; Wright, April M. ^[1] ; Mueller, Ulrich G. ^[1] ; Rodrigues, Andre ^[2]

Afiliação do(s) autor(es)

^[1] Univ Texas Austin, Dept Integrat Biol, Austin, TX 78712 - USA

^[2] Sao Paulo State Univ, UNESP, Dept Biochem & Microbiol, Sao Paulo - Brazil

^[3] Rice Univ, Dept Biosci, Houston, TX - USA

^[4] Sao Paulo State Univ, UNESP, Ctr Study Social Insects, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ROYAL SOCIETY OPEN SCIENCE; v. 2, n. 9 SEP 2015.
• Citações Web of Science: 14

Resumo

Fungus-gardening (attine) ants grow fungus for food in protected gardens, which contain beneficial, auxiliary microbes, but also microbes harmful to gardens. Among these potentially pathogenic microorganisms, the most consistently isolated are fungi in the genus Escovopsis, which are thought to co-evolve with ants and their cultivar in a tripartite model. To test clade-to-clade correspondence between Escovopsis and ants in the higher attine symbiosis (including leaf-cutting and non-leaf-cutting ants), we amassed a geographically comprehensive collection of Escovopsis from Mexico to southern Brazil, and reconstructed the corresponding Escovopsis phylogeny. Contrary to previous analyses reporting phylogenetic divergence between Escovopsis from leafcutters and Trachymyrmex ants (non-leafcutter), we found no evidence for such specialization; rather, gardens from leafcutters and non-leafcutters genera can sometimes be infected by closely related strains of Escovopsis, suggesting switches at higher phylogenetic levels than previously reported within the higher attine symbiosis. Analyses identified rare Escovopsis strains that might represent biogeographically restricted endemic species. Phylogenetic patterns correspond to morphological variation of vesicle type (hyphal structures supporting spore-bearing cells), separating Escovopsis with phylogenetically derived cylindrical vesicles from ancestral Escovopsis with globose vesicles. The new phylogenetic insights provide an improved basis for future taxonomic and ecological studies of Escovopsis. (AU)

• Processo FAPESP: 11/16765-0 - Código de barras de DNA e potencial biotecnológico dos microfungos associados aos ninhos das formigas cortadeiras
• Beneficiário: André Rodrigues
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 13/25748-8 - Filogenia do micoparasita Escovopsis associado às formigas Attini derivadas
• Beneficiário: Lucas Andrade Meirelles
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Mestrado
• Processo FAPESP: 13/08338-0 - Sistemática e filogenia do fungo parasita Escovopsis associado às formigas Attini
• Beneficiário: Lucas Andrade Meirelles
• Modalidade de apoio: Bolsas no Brasil - Mestrado