Five new Camillea (Xylariales) species described from French Guiana.
Ascomycota
Graphostromataceae
Neotropics
Phylogeny
SEM
Saül
Taxonomy
Journal
Botanical studies
ISSN: 1817-406X
Titre abrégé: Bot Stud
Pays: England
ID NLM: 101321928
Informations de publication
Date de publication:
28 Oct 2023
28 Oct 2023
Historique:
received:
06
06
2023
accepted:
21
08
2023
medline:
28
10
2023
pubmed:
28
10
2023
entrez:
27
10
2023
Statut:
epublish
Résumé
The genus Camillea was created in 1849 from collections made in French Guiana with eight species included. Numerous species assigned to Camillea were subsequently discovered, especially in the forests of the Amazon basin, but new discoveries have not been reported from French Guiana since 1849. Recent fieldwork in French Guiana has begun to fill this gap by identifying five new species, most of which were collected in the vicinity of Saül village. Based on macro- and micromorphological study of their stromata, including SEM images of ascospore wall ornamentation, five new species were recognized, including C. cribellum, C. heterostomoides, C. nitida, C. rogersii and C. saulensis. Cultures could be obtained for C. heterostomoides and C. rogersii, and ITS and LSU sequences were obtained for all of the five new species. Camillea heterostoma and its variety microspora were shown to be conspecific. Provisional molecular phylogenetic analyses support the possible reinstatement of Hypoxylon melanaspis, currently regarded as merely an applanate form of C. leprieurii. The current study is based on a relatively limited fieldwork in its duration and sampling area but was able to substantially increase the number of Camillea species known from French Guiana. This augurs an exceptional and still unknown diversity of the genus in this area and by extension in the adjacent neotropical forests.
Sections du résumé
BACKGROUND
BACKGROUND
The genus Camillea was created in 1849 from collections made in French Guiana with eight species included. Numerous species assigned to Camillea were subsequently discovered, especially in the forests of the Amazon basin, but new discoveries have not been reported from French Guiana since 1849. Recent fieldwork in French Guiana has begun to fill this gap by identifying five new species, most of which were collected in the vicinity of Saül village.
RESULTS
RESULTS
Based on macro- and micromorphological study of their stromata, including SEM images of ascospore wall ornamentation, five new species were recognized, including C. cribellum, C. heterostomoides, C. nitida, C. rogersii and C. saulensis. Cultures could be obtained for C. heterostomoides and C. rogersii, and ITS and LSU sequences were obtained for all of the five new species. Camillea heterostoma and its variety microspora were shown to be conspecific. Provisional molecular phylogenetic analyses support the possible reinstatement of Hypoxylon melanaspis, currently regarded as merely an applanate form of C. leprieurii.
CONCLUSION
CONCLUSIONS
The current study is based on a relatively limited fieldwork in its duration and sampling area but was able to substantially increase the number of Camillea species known from French Guiana. This augurs an exceptional and still unknown diversity of the genus in this area and by extension in the adjacent neotropical forests.
Identifiants
pubmed: 37891334
doi: 10.1186/s40529-023-00397-6
pii: 10.1186/s40529-023-00397-6
pmc: PMC10611695
doi:
Types de publication
Journal Article
Langues
eng
Pagination
31Subventions
Organisme : National Science Council
ID : MOST 111-2311-B-001-038-MY2
Informations de copyright
© 2023. The Author(s).
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