Lazarenkoiopsis

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Lazarenkoiopsis
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Lecanoromycetes
Order: Teloschistales
Family: Teloschistaceae
Genus: Lazarenkoiopsis
S.Y.Kondr., Lőkös & Hur (2017)
Species:
L. ussuriensis
Binomial name
Lazarenkoiopsis ussuriensis
(Oxner, S.Y.Kondr. & Elix) S.Y.Kondr., Lőkös & Hur (2017)
Synonyms [1]
  • Caloplaca ussuriensisOxner, S.Y.Kondr. & Elix (2011)
  • Gyalolechia ussuriensis(Oxner, S.Y.Kondr. & Elix) Vondrák (2016)

Lazarenkoiopsis is a single-species fungal genus in the family Teloschistaceae. [2] It contains Lazarenkoiopsis ussuriensis, a corticolous (bark-dwelling), crustose lichen species found in the Russian Far East.

Contents

Taxonomy

The lichen was first described scientifically in 2011 by the lichenologists Alfred Oxner, Sergey Kondratyuk, and John Elix, as Caloplaca ussuriensis. The species name is derived from the Primorsky region's historical name, the Ussuriysk region. [3] The taxon was transferred to the newly created genus Lazarenkoiopsis in 2020; it is its type and only species. The genus name honours Andrij Sozontovych Lazarenko (1901–1979), a Ukrainian bryologist. Lazarenkoiopsis is in the subfamily Caloplacoideae of the family Teloschistaceae. [4]

Description

The thallus of Lazarenkoiopsis ussuriensis is 2–3 cm wide, thick and smooth, and can be distinctly cracked with broad cracks up to 0.07 mm wide. The areoles range from 0.5 to 2.5 mm in width. The upper surface is whitish, dull greyish-white to grey, or greenish grey-brown, with bright to dull yellow soralia. The soralia are initially rounded or irregular in shape, eventually becoming confluent and forming elongated fissure-like structures. [3]

In cross-section, the thallus is 70–200  µm thick, with a cortical layer of 20–50 µm. Apothecia are 0.5–1 mm in diameter and up to 0.3 mm high, initially zeorine in form with well-developed margins, later becoming lecanorine . The thalline exciple is 60–70 µm thick, and the true exciple is 30–40 µm wide in the upper portion, thinning towards the base. The hymenium reaches up to 70 µm high, with paraphyses lacking swollen tips. Ascospores are broadly ellipsoid to almost spherical or elongated, with a wide septum. [3]

Lazarenkoiopsis ussuriensis contains several secondary metabolites (lichen products), including fragilin and parietin as major constituents, along with minor amounts of emodin, 7-chloroemodin, erythroglaucin, 7-chloroparietinic acid, physcoin bysanthrone, and traces of physcoin 9-anthrone and physcoin 10-anthrone. [3]

Genus Lazarenkoiopsis closely resembles the genus Solitaria from the subfamily Xanthorioideae. It is distinct due to its notably cracked-areolated, thicker thallus, and the presence of numerous oil droplets within its hymenium. Its true exciple has a textura intricata tissue structure (with intricately tangled hyphae). Unlike Solitaria, the paraphyses in Lazarenkoiopsis do not swell at the tips. [4]

Similar species

Lazarenkoiopsis ussuriensis is similar to Solitaria chrysophthalma but can be distinguished by its thicker, cracked-areolated thallus, and the presence of numerous oil droplets in the subhymenium. It differs from Oxneriopsis oxneri by having soralia instead of phyllidia and schistidia . Compared to Caloplaca brunneola and Obscuroplaca camptidia , it has lecanorine rather than biatorine apothecia and larger ascospores. L. ussuriensis also differs from Caloplaca spadicea by not having three-septate ascospores and a minutely isidiate thallus. [3]

Habitat, distribution, and ecology

Lazarenkoiopsis ussuriensis has been observed in several locations within the Far East of Russia, particularly in the Primorsky Krai region. Regularly found growing alongside Oxneriopsis oxneri , L. ussuriensis is often mistaken for having both isidia and soredia. It differs from O. oxneri in its non-exfoliating upper surface and non-visible medulla. Caloplaca cerina is also sometimes associated but differs in apothecial colour and the absence of soralia. [3]

Related Research Articles

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Caloplaca aliciae is a species of saxicolous (rock-dwelling), crustose lichen in the family Teloschistaceae. It is found in Australia. It is characterised by a thallus that can grow up to 2 cm wide, featuring colours from dull pink to dull brown, with small, dispersed, flat areoles that are irregularly shaped and occasionally dissected by cracks, displaying a whitish, dull pink, or dull orange-brown surface. Its apothecia are lecanorine in form, initially immersed but often rising above the areoles, with each areole containing one or two apothecia that have a thalline margin matching the thallus colour.

Caloplaca filsonii is a species of corticolous (bark-dwelling), crustose lichen in the family Teloschistaceae. It has a crust-like thallus that is uneven and warty around the edges and more distinctly wart-like in the centre, coloured in shades of grey and brownish-grey near its reproductive structures (apothecia), but lacking a developed prothallus.

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Neobrownliella montisfracti is a species of saxicolous (rock-dwelling), crustose lichen in the family Teloschistaceae. It is found in Australia. The small lichen has dull pink to grey areoles, characterised by completely immersed, reddish to pink-brown apothecia and lacking soredia and isidia. Its areoles are closely pressed against the substrate, with the apothecia containing small, elongated ascospores and narrowly rod-shaped conidia.

Sirenophila cliffwetmorei is a species of saxicolous (rock-dwelling), crustose lichen in the family Teloschistaceae. It is found in Australia. Its thallus can reach up to 1 centimetre in width, has a whitish to whitish-grey colour, and is very thin, sometimes almost merging with the substrate, and has paler edges with a darker grey centre. Its numerous tiny apothecia give the thallus a yellow-orange appearance.

Fauriea trassii is a lichen species in the family Teloschistaceae, described in 2011. It is primarily found in the Far East of Russia, particularly in the Primorsky Krai region.

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Caloplaca nothoholocarpa is a species of saxicolous (rock-dwelling), crustose lichen in the family Teloschistaceae. It is found in Chile.

Kaernefia kaernefeltii is a species of saxicolous (rock-dwelling), crustose lichen in the family Teloschistaceae. It is widely distributed in Australia.

Oxneriopsis is a genus of lichen-forming fungi in the family Teloschistaceae. It has four species of corticolous (bark-dwelling), crustose lichens.

Elixjohnia jackelixii is a species of saxicolous (rock-dwelling), crustose lichen in the family Teloschistaceae. It is found in Australia and New Zealand. The lichen is characterised by its unique multilayered appearance with outer sterile rings that are brownish or greenish-yellow and inner areoles that are whitish, yellowish, or greyish, often cracked to reveal the medulla underneath. Its fruiting bodies, or apothecia, are typically attached directly to the thallus and vary in colour and shape.

References

  1. ↑ "Synonymy. Current Name: Lazarenkoiopsis ussuriensis (Oxner, S.Y. Kondr. & Elix) S.Y. Kondr., Lőkös & Hur, in Kondratyuk, Lőkös, Upreti, Nayaka, Mishra, Ravera, Jeong, Jang, Park & Hur, Acta bot. hung. 59(1-2): 121 (2017)". Species Fungorum . Retrieved 30 December 2023.
  2. ↑ "Lazarenkoiopsis ussuriensis (Oxner, S.Y. Kondr. & Elix) S.Y. Kondr., Lőkös & Hur". Catalogue of Life . Species 2000: Leiden, the Netherlands. Retrieved 30 December 2023.
  3. 1 2 3 4 5 6 Kondratyuk, S.Y.; Elix, J.A.; Galanina, I.A.; Yakovchenko, L.S.; Kärnefelt, I.; Thell, A. (2011). "Four new Caloplaca species (Teloschistaceae, Ascomycotina)". Folia Cryptogamica Estonica. 48: 17–23.
  4. 1 2 Kondratyuk, S.Y.; Lőkös, L.; Upreti, D.K.; Nayaka, S.; Mishra, G.K.; Ravera, S.; Jeong, M.-H.; Jang, S.-H.; Park, J.S.; Hur, J.S. (2017). "New monophyletic branches of the Teloschistaceae (lichen-forming Ascomycota) proved by three gene phylogeny". Acta Botanica Hungarica. 59 (1–2): 71–136. doi:10.1556/034.59.2017.1-2.6. hdl: 10447/414429 .
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