Botanica Pacifica. A journal of plant science and conservation 2025. Preprint
Article first published online: 15 JUL 2025 | DOI: 10.17581/bp.2025.14204
Revision of the Myelochroa genus (Parmeliaceae, lichenized Ascomycota) in the south of the Russian Far East
Sergey V. Chesnokov 1,2
,
Liudmila A. Konoreva 1,2,3,
Ilya A. Prokopiev 2,
Fedor V. Skirin 4 &
Irina F. Skirina 4 1 Botanical Garden-Institute FEB RAS, Vladivostok, Russia
2 Komarov Botanical Institute RAS, St. Petersburg, Russia
3 Polar-Alpine Botanical Garden-Institute KSC RAS, Kirovsk, Russia
4 Pacific Institute of Geography FEB RAS, Vladivostok, Russia
A revision of the genus Myelochroa in the south of Russian Far East was carried out. A total of eight species of the genus were identified, and a key for their identification was prepared. For each species, the characteristic features of the studied samples, differences from related species are indicated, their distribution was clarified, and maps were prepared. Several new substances were identified during the study of the composition of secondary metabolites of Myelochroa species. Сhloroatranorin was reported for the genus Myelochroa for the first time. In addition, noristictic acid was found for the first time in M. galbina and M. metarevoluta, and salazinic acid was found for the first time in M. leucotyliza. The taxonomic significance of some substances in the systematics of the genus has been clarified.
Чесноков С.В., Конорева Л.А., Прокопьев И.А., Скирин Ф.В., Скирина И.Ф. Ревизия рода Myelochroa (Parmeliaceae, lichenized Ascomycota) на юге Дальнего Востока России. Проведена ревизия рода Myelochroa на юге российского Дальнего Востока. Всего было выявлено восемь видов рода, подготовлен ключ для определения. Для каждого вида указаны характерные особенности изученных образцов, отличия от близких видов, уточнен ареал и составлены карты распространения видов. При изучении состава вторичных метаболитов видов Myelochroa выявлен ряд новых веществ. Впервые для рода Myelochroa указан хлороатранорин. Кроме того, у M. galbina и M. metarevoluta впервые обнаружена норстиктовая кислота, а у M. leucotyliza – салациновая кислота. Уточнено таксономическое значение некоторых веществ в систематике рода.
Keywords: lichens, Asia, Parmeliaceae, secondary metabolites, distribution, taxonomy, лишайники, Азия, вторичные метаболиты, распространение, систематика
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