A fungus-eat-fungus world: Digitopodium, with particular reference to mycoparasites of the coffee leaf rust, Hemileia vastatrix
Abstract Digitopodium hemileiae was described originally in 1930 as Cladosporium hemileiae; growing as a mycoparasite of the coffee leaf rust (CLR), Hemileia vastatrix, in a sample of diseased leaves of Coffea canephora collected in the Democratic Republic of Congo. No cultures from this material ex...
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2021-01-01
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| Series: | IMA Fungus |
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| Online Access: | https://doi.org/10.1186/s43008-020-00052-w |
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| author | Adans A. Colmán Harry C. Evans Sara S. Salcedo-Sarmiento Uwe Braun Kifle Belachew-Bekele Robert W. Barreto |
| author_facet | Adans A. Colmán Harry C. Evans Sara S. Salcedo-Sarmiento Uwe Braun Kifle Belachew-Bekele Robert W. Barreto |
| author_sort | Adans A. Colmán |
| collection | DOAJ |
| description | Abstract Digitopodium hemileiae was described originally in 1930 as Cladosporium hemileiae; growing as a mycoparasite of the coffee leaf rust (CLR), Hemileia vastatrix, in a sample of diseased leaves of Coffea canephora collected in the Democratic Republic of Congo. No cultures from this material exist. More recently, the type material was re-examined and, based on morphological features, considered to be incorrectly placed in Cladosporium. The new genus Digitopodium was erected to accommodate this species. Interest in fungal antagonists of H. vastarix, as potential biocontrol agents of CLR, led to comprehensive surveys for mycoparasites, both in the African centre of origin of the rust, as well as in its South American exotic range. Among the rust specimens from Ethiopia, one was found to be colonized by a fungus congeneric with, and similar to, D. hemileiae. Pure cultures obtained from the Ethiopian material enabled a molecular study and for its phylogenetic position to be elucidated, based on DNA sequence data from the ITS and LSU regions. Molecular data showed that two members of the recently erected genus Hyalocladosporiella (Herpotrichiellaceae: Chaetothyriales) are congeneric with Digitopodium from Ethiopia and morphologically similar to both D. hemileiae and the two Ethiopian isolates. These isolates were found to be morphologically and genetically identical to H. tectonae, described previously from Brazil. Thus, species of Hyalocladosporiella are re-allocated to Digitopodium here; including D. tectonae, and a novel species, D. canescens, recently found in Brazil growing as a mycoparasite of Puccinia thaliae. The potential use of D. hemileiae and D. tectonae for classical biological control of CLR is discussed. |
| format | Article |
| id | doaj-art-61d95c18ed944cea986a806e16c510f2 |
| institution | Kabale University |
| issn | 2210-6359 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | BMC |
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| series | IMA Fungus |
| spelling | doaj-art-61d95c18ed944cea986a806e16c510f22025-02-02T20:30:17ZengBMCIMA Fungus2210-63592021-01-0112111110.1186/s43008-020-00052-wA fungus-eat-fungus world: Digitopodium, with particular reference to mycoparasites of the coffee leaf rust, Hemileia vastatrixAdans A. Colmán0Harry C. Evans1Sara S. Salcedo-Sarmiento2Uwe Braun3Kifle Belachew-Bekele4Robert W. Barreto5Departamento de Fitopatologia, Universidade Federal de ViçosaDepartamento de Fitopatologia, Universidade Federal de ViçosaDepartamento de Fitopatologia, Universidade Federal de ViçosaMartin Luther University Halle, Institute of Biology, Department of Geobotany and Botanical GardenJimma Agricultural Research CenterDepartamento de Fitopatologia, Universidade Federal de ViçosaAbstract Digitopodium hemileiae was described originally in 1930 as Cladosporium hemileiae; growing as a mycoparasite of the coffee leaf rust (CLR), Hemileia vastatrix, in a sample of diseased leaves of Coffea canephora collected in the Democratic Republic of Congo. No cultures from this material exist. More recently, the type material was re-examined and, based on morphological features, considered to be incorrectly placed in Cladosporium. The new genus Digitopodium was erected to accommodate this species. Interest in fungal antagonists of H. vastarix, as potential biocontrol agents of CLR, led to comprehensive surveys for mycoparasites, both in the African centre of origin of the rust, as well as in its South American exotic range. Among the rust specimens from Ethiopia, one was found to be colonized by a fungus congeneric with, and similar to, D. hemileiae. Pure cultures obtained from the Ethiopian material enabled a molecular study and for its phylogenetic position to be elucidated, based on DNA sequence data from the ITS and LSU regions. Molecular data showed that two members of the recently erected genus Hyalocladosporiella (Herpotrichiellaceae: Chaetothyriales) are congeneric with Digitopodium from Ethiopia and morphologically similar to both D. hemileiae and the two Ethiopian isolates. These isolates were found to be morphologically and genetically identical to H. tectonae, described previously from Brazil. Thus, species of Hyalocladosporiella are re-allocated to Digitopodium here; including D. tectonae, and a novel species, D. canescens, recently found in Brazil growing as a mycoparasite of Puccinia thaliae. The potential use of D. hemileiae and D. tectonae for classical biological control of CLR is discussed.https://doi.org/10.1186/s43008-020-00052-wClassical biological controlEthiopiaFungicolous fungiHerpotrichiellaceaeHyalocladosporiellaNew taxa` |
| spellingShingle | Adans A. Colmán Harry C. Evans Sara S. Salcedo-Sarmiento Uwe Braun Kifle Belachew-Bekele Robert W. Barreto A fungus-eat-fungus world: Digitopodium, with particular reference to mycoparasites of the coffee leaf rust, Hemileia vastatrix IMA Fungus Classical biological control Ethiopia Fungicolous fungi Herpotrichiellaceae Hyalocladosporiella New taxa` |
| title | A fungus-eat-fungus world: Digitopodium, with particular reference to mycoparasites of the coffee leaf rust, Hemileia vastatrix |
| title_full | A fungus-eat-fungus world: Digitopodium, with particular reference to mycoparasites of the coffee leaf rust, Hemileia vastatrix |
| title_fullStr | A fungus-eat-fungus world: Digitopodium, with particular reference to mycoparasites of the coffee leaf rust, Hemileia vastatrix |
| title_full_unstemmed | A fungus-eat-fungus world: Digitopodium, with particular reference to mycoparasites of the coffee leaf rust, Hemileia vastatrix |
| title_short | A fungus-eat-fungus world: Digitopodium, with particular reference to mycoparasites of the coffee leaf rust, Hemileia vastatrix |
| title_sort | fungus eat fungus world digitopodium with particular reference to mycoparasites of the coffee leaf rust hemileia vastatrix |
| topic | Classical biological control Ethiopia Fungicolous fungi Herpotrichiellaceae Hyalocladosporiella New taxa` |
| url | https://doi.org/10.1186/s43008-020-00052-w |
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