RESUMO
Microfungi were collected in southern Mexico in the vicinity of Puerto Escondido, Oaxaca in 2007. In 2006, samples were gathered from Acacia myrmecophytes [(Remarkable microfungi from Oaxaca of Acacia species) Part I]. In the present investigation [Part II], we collected microfungi from different parts of a variety of wild and cultivated higher plants belonging to the families Anacardiaceae, Caricaceae, Fabaceae, Moraceae, and Nyctaginacae. The microfungi found here live as parasites or saprophytes. Interestingly, the species Colletotrichum lindemuthianum (Sacc. and Magn.) Briosi and Cavara has repeatedly been used to cause fungal infections of Phaseolus lunatus leaves in laboratory experiments. We could now find the same fungus as parasite on the same host plants under field conditions showing that results obtained in the laboratory are also relevant in nature. Most of the fungal species collected belong to the classes Ascomycotina, Basidiomycotina and Deuteromycotina. Until now, some of the microfungi identified in this study have been rarely observed before or have been reported for the first time in Mexico, for example: Pestalotia acaciae Thüm. on Acacia collinsii Safford; Corynespora cassiicola (Berk. and M.A. Curtis) C.T. Wei on Carica papaya L.; Botryosphaeria ribis Grossenb. and Duggar and Cercosporella leucaenae (Raghu Ram and Mallaiah) U. Braun (new for Mexico) and Camptomeris leucaenae (F. Stevens and Dalbey) Syd. (new for Mexico) on Leucaena leucocephala (Lam.) de Wit.; Oidium clitoriae Narayanas. and K. Ramakr. and Phakopsora cf. pachyrhizi Sydow and Sydow (new for Mexico) on Clitoria ternatea L.; Botryosphaeria obtusa (Schw.) Shoemaker on Prosopis juliflora (Sw.) DC.; Cylindrocladium scoparium Morg. on Ficus benjamina L.; Acremonium sp. on Bougainvillea sp. All specimens are located in the herbarium ESS. Mycotheca Parva collection G.B. Feige and N. Ale-Agha.
Assuntos
Fungos/classificação , Fungos/isolamento & purificação , Filogenia , Doenças das Plantas/microbiologia , Fungos/patogenicidade , México , Plantas/microbiologiaRESUMO
In the state of Oaxaca (Mexico, 10 km north-west of Puerto Escondido 15 degrees 55' N, 97 degrees 09' W) we were able to collect some microfungi living as parasites or saprophytes on Acacia species, some of them are causing attention for Oaxaca. Many belong to the Deuteromycotina (Hyphomycetes, Coelomycetes) and Ascomycotina. On A. hindsii: Calonectria pseudopeziza (Desm.) Sacc., Hypoxylon truncatum (Schwein. Fr.) J.H. Miller, Epicoccum nigrum Link., Zygosporium gibbum (Sacc., M. Roussau & E. Bommer) S.J. Hughes and on A. cornigera: Phyllosticta acaciicola P. Henn., Taeniolella alta (Ehrenb. ex Pers.) S.J. Hughes, Cephaliophora tropica Thaxt., Diplodia mutila (Fr. Fr.) Mont., Pleospora herbarum (Pers. Fr.) Rabenh., Gliocladium roseum Bainier, Ulocladium atrum Preuss., and different others. All species collected are listed in text.