Chemical variation in the lichen genus Letrouitia (Ascomycota, Letrouitiaceae)

S. Johansson; Ulrik Søchting; J.A. Elix; J. Wardlaw

doi:10.1007/s11557-006-0117-5

Chemical variation in the lichen genus Letrouitia (Ascomycota, Letrouitiaceae)

S. Johansson, Ulrik Søchting, J.A. Elix, J. Wardlaw

Abstract

Secondary metabolites from 193 specimens belonging to 15 species of Letrouitia were analyzed by HPLC. Significant quantities of the anthraquinones parietin and fragilin were found in most species and occasionally minor quantities of emodin, 5-chloroemodin, 7-chloroemodin, 7-chloroteloschistin, 7-chlorofallacinal and 7-chloroparietinic acid were present. Eight previously unknown lichen substances were identified. A chemotype containing seven new dibenzofurans (8-chlorodioxocondidymic acid, 8-chlorodioxodidymic acid, 8-chloroxodidymic acid, dioxocondidymic acid, dioxodidymic acid, letrouitic acid and oxodidymic acid) was found in 3 species. In addition, a chemotype containing four unknowns (possibly chlorodepsidones) occurred in L. subvulpina. Eight different chemotypes were identified in the genus. The secondary chemistry was important for the precise identification of some species in Letrouitia. The similarity in secondary chemistry between Letrouitiaceae and Teloschistaceae is not particularly strong, as the shared compounds are also known to occur in several other lichen families.

Original language	English
Journal	Mycological Progress
Volume	4
Issue number	2
Pages (from-to)	139-148
ISSN	1617-416X
DOIs	https://doi.org/10.1007/s11557-006-0117-5
Publication status	Published - 2005

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@article{2765cf7074c311dbbee902004c4f4f50,

title = "Chemical variation in the lichen genus Letrouitia (Ascomycota, Letrouitiaceae)",

abstract = "Secondary metabolites from 193 specimens belonging to 15 species of Letrouitia were analyzed by HPLC. Significant quantities of the anthraquinones parietin and fragilin were found in most species and occasionally minor quantities of emodin, 5-chloroemodin, 7-chloroemodin, 7-chloroteloschistin, 7-chlorofallacinal and 7-chloroparietinic acid were present. Eight previously unknown lichen substances were identified. A chemotype containing seven new dibenzofurans (8-chlorodioxocondidymic acid, 8-chlorodioxodidymic acid, 8-chloroxodidymic acid, dioxocondidymic acid, dioxodidymic acid, letrouitic acid and oxodidymic acid) was found in 3 species. In addition, a chemotype containing four unknowns (possibly chlorodepsidones) occurred in L. subvulpina. Eight different chemotypes were identified in the genus. The secondary chemistry was important for the precise identification of some species in Letrouitia. The similarity in secondary chemistry between Letrouitiaceae and Teloschistaceae is not particularly strong, as the shared compounds are also known to occur in several other lichen families.",

author = "S. Johansson and Ulrik S{\o}chting and J.A. Elix and J. Wardlaw",

note = "Keywords Letrouitia - chemosyndromes - chemotaxonomy - anthraquinons - dibenzofurans - HPLC",

year = "2005",

doi = "10.1007/s11557-006-0117-5",

language = "English",

volume = "4",

pages = "139--148",

journal = "Mycological Progress",

issn = "1617-416X",

publisher = "Springer",

number = "2",

}

TY - JOUR

T1 - Chemical variation in the lichen genus Letrouitia (Ascomycota, Letrouitiaceae)

AU - Johansson, S.

AU - Søchting, Ulrik

AU - Elix, J.A.

AU - Wardlaw, J.

N1 - Keywords Letrouitia - chemosyndromes - chemotaxonomy - anthraquinons - dibenzofurans - HPLC

PY - 2005

Y1 - 2005

N2 - Secondary metabolites from 193 specimens belonging to 15 species of Letrouitia were analyzed by HPLC. Significant quantities of the anthraquinones parietin and fragilin were found in most species and occasionally minor quantities of emodin, 5-chloroemodin, 7-chloroemodin, 7-chloroteloschistin, 7-chlorofallacinal and 7-chloroparietinic acid were present. Eight previously unknown lichen substances were identified. A chemotype containing seven new dibenzofurans (8-chlorodioxocondidymic acid, 8-chlorodioxodidymic acid, 8-chloroxodidymic acid, dioxocondidymic acid, dioxodidymic acid, letrouitic acid and oxodidymic acid) was found in 3 species. In addition, a chemotype containing four unknowns (possibly chlorodepsidones) occurred in L. subvulpina. Eight different chemotypes were identified in the genus. The secondary chemistry was important for the precise identification of some species in Letrouitia. The similarity in secondary chemistry between Letrouitiaceae and Teloschistaceae is not particularly strong, as the shared compounds are also known to occur in several other lichen families.

AB - Secondary metabolites from 193 specimens belonging to 15 species of Letrouitia were analyzed by HPLC. Significant quantities of the anthraquinones parietin and fragilin were found in most species and occasionally minor quantities of emodin, 5-chloroemodin, 7-chloroemodin, 7-chloroteloschistin, 7-chlorofallacinal and 7-chloroparietinic acid were present. Eight previously unknown lichen substances were identified. A chemotype containing seven new dibenzofurans (8-chlorodioxocondidymic acid, 8-chlorodioxodidymic acid, 8-chloroxodidymic acid, dioxocondidymic acid, dioxodidymic acid, letrouitic acid and oxodidymic acid) was found in 3 species. In addition, a chemotype containing four unknowns (possibly chlorodepsidones) occurred in L. subvulpina. Eight different chemotypes were identified in the genus. The secondary chemistry was important for the precise identification of some species in Letrouitia. The similarity in secondary chemistry between Letrouitiaceae and Teloschistaceae is not particularly strong, as the shared compounds are also known to occur in several other lichen families.

U2 - 10.1007/s11557-006-0117-5

DO - 10.1007/s11557-006-0117-5

M3 - Journal article

SN - 1617-416X

VL - 4

SP - 139

EP - 148

JO - Mycological Progress

JF - Mycological Progress

IS - 2

ER -

Chemical variation in the lichen genus Letrouitia (Ascomycota, Letrouitiaceae)

Abstract

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