Английская Википедия:Fissurina isohypocrellina

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Fissurina isohypocrellina is a species of corticolous (bark-dwelling), crustose lichen in the family Graphidaceae].[1] Newly described to science in 2022, it is found in the rainforests of Acre, Brazil. This species is notable within the genus Fissurina genus for the presence of isohypocrellin, a rare secondary metabolite (lichen product) that contributes to its unique wine-red apothecia (the fruiting bodies that produce spores).

Taxonomy

André Aptroot formally described Fissurina isohypocrellina in 2022. The species name reflects the presence of isohypocrellin within its apothecia (fruiting bodies), a characteristic that sets it apart from other Fissurina species. Marcela Cáceres and Aptroot collected the type specimen from the Comunidade Cuidado in the Шаблон:Ill (Acre, Brazil) at an elevation of Шаблон:Cvt; there it was found growing on bark in a rainforest.[2]

Description

The thallus of Fissurina isohypocrellina is crustose, forming a continuous, thinly Шаблон:Lichengloss, slightly shiny pale greenish-brown layer. It covers areas up to Шаблон:Cvt in diameter and is under 0.1 mm thick. The lichen does not form a prothallus (a preliminary growth around and underlying the thallus).[2]

The Шаблон:Lichengloss (the symbiotic algae providing nutrients through photosynthesis) is Шаблон:Lichengloss. The ascomata (spore-producing structures) are immersed in the bark, linear, often curved, sometimes branched, and feature wine-red Шаблон:Lichengloss with Шаблон:Lichengloss (blackened) tips.[2]

Chemical testing of the thallus shows no reaction to ultraviolet light, nor to the C, K, KC, and P spot tests, but the presence of isohypocrellin can be confirmed through thin-layer chromatography. This pigment reacts to a potassium hydroxide solution (K) by turning a vivid green, a unique feature among lichens.[2]

Habitat and distribution

This species is exclusively known to grow on tree bark within the primary rainforest of Acre, Brazil.[2]

References

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  2. 2,0 2,1 2,2 2,3 2,4 Ошибка цитирования Неверный тег <ref>; для сносок Aptroot et al. 2022 не указан текст