Relevant bibliographies by topics / Ochrolechia

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Academic literature on the topic 'Ochrolechia'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Ochrolechia"

1

ERTZ, DAMIEN, ALAN FRYDAY, IMKE SCHMITT, MARYVONNE CHARRIER, MAGDALENA DUDEK, and MARTIN KUKWA. "Ochrolechia kerguelensis sp. nov. from the Southern Hemisphere and O. antarctica reinstated from the synonymy of O. parella." Phytotaxa 280, no. 2 (October 19, 2016): 129. http://dx.doi.org/10.11646/phytotaxa.280.2.3.

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Ochrolechia kerguelensis Ertz & Kukwa is described as new to science from the subantarctic islands of Kerguelen. It is characterized by pruinose ascomata, usually 4-spored asci, large ascospores of 50–90 × 32–56 µm, the production of gyrophoric acid only in the apothecia and the lack of variolaric acid. A photobiont with cells containing orange guttules such as in trentepohlioid algae is recorded for the first time in the genus Ochrolechia, being present in O. austroamericana and O. kerguelensis. Ochrolechia antarctica is reinstated from the synonymy of O. parella and treated as a distinct species. Chemical and morphological differences between these taxa are discussed. Ochrolechia chilensis and O. deceptionis are treated as synonyms of O. antarctica. The phylogenetic placement of O. antarctica, O. austroamericana and O. kerguelensis is investigated using mtSSU rDNA sequences and a Bayesian analysis. A key to all fertile, saxicolous Ochrolechia species with a C+ red epihymenium occurring in the Southern Hemisphere is presented.
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2

Kukwa, Martin, Pamela Rodriguez Flakus, and Adam Flakus. "Notes on the lichen genus Ochrolechia in Bolivia." Polish Botanical Journal 58, no. 2 (December 1, 2013): 691–95. http://dx.doi.org/10.2478/pbj-2013-0048.

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Abstract The paper presents new records for four taxa of Ochrolechia A. Massal. from Bolivia, of which three, O. austroamericana (Räsänen) Räsänen, O. subpallescens f. Verseghy uruguayensis Verseghy and O. upsaliensis (L.) A. Massal., are new for the country. Ochrolechia subpallescens f. uruguayensis is shown to differ chemically from O. subpallescens s.str., but its taxonomic rank needs to be clarified with molecular studies. Ochrolechia africana Vain. is also reported for the first time for Tanzania and Uruguay, and O. austroamericana for Ecuador.
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3

Brodo, Irwin M. "Studies of the lichen genus Ochrolechia. 1. A new classification for Pertusaria subplicans and P. rhodoleuca." Canadian Journal of Botany 66, no. 7 (July 1, 1988): 1264–69. http://dx.doi.org/10.1139/b88-181.

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A reexamination of the ascus structure, spore type, and chemistry of the saxicolous lichens Pertusaria subplicans Nyl. and P. rhodoleuca Th. Fr. has revealed them to be better classified within the genus Ochrolechia. The following new combinations have therefore been introduced: Ochrolechia subplicans (Nyl.) comb.nov. and O. rhodoleuca (Th. Fr.) comb.nov. Ochrolechia rhodoleuca is apparently restricted to northern Europe, leaving O. subplicans as the name of the American material. It is possible to discern two ecologically defined subspecies within O. subplicans, each with slight chemical and morphological distinctions: subsp. subplicans and subsp. hultenii (Erichs.) Brodo comb.nov. A method is described for determining the precise location of gyrophoric, alectoronic, and variolaric acids within an ascoma by using a combination of conventional ultraviolet and spot-test techniques.
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4

Hansen, Eric Steen. "Contribution to the lichen flora of North East Greenland. V. Zackenberg and Clavering Ø area." Botanica Lithuanica 23, no. 1 (June 27, 2017): 43–50. http://dx.doi.org/10.1515/botlit-2017-0004.

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AbstractThe paper lists 202 lichen taxa from Zackenberg and Clavering Ø area, North East Greenland. Ochrolechia androgyna, Psora globifera and Rhizocarpon renneri are new to East Greenland. Sixteen lichen taxa are new to North East Greenland, viz. Aspicilia aquatica, Candelariella dispersa, Chaenotheca furfuracea, Circinaria caesiocinerea, Cladonia libifera, Lecanora cenisia, L. chloroleprosa, L. leptacina, Lichenomphalia alpina, Miriquidica atrofulva, M. nigroleprosa, Ochrolechia alaskana, Peltigera castanea, P. extenuata, Phylliscum demangeonii and Pyrenopsis furfurea.
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5

Diederich, Paul, Mikhail Zhurbenko, and Javier Etayo. "The lichenicolous species of Odontotrema (Syn. Lethariicola) (Ascomycota, Ostropales)." Lichenologist 34, no. 6 (November 2002): 479–501. http://dx.doi.org/10.1006/lich.2002.0418.

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AbstractThe genus Lethariicola is shown to be a synonym of Odontotrema. Fifteen lichenicolous species are recognized: O. bryoriae sp. nov. (on Bryoria), O. cuculare comb. nov. (on Parmeliopsis hyperopta), O. figulinum comb. nov. (on Lecanora polytropa) O. intermedium sp. nov. (on Thamnolia), O. lecanorae sp. nov. (on Lecanora), O. melaneliae sp. nov. (on Melanelia), O. ochrolechiae sp. nov. (on Ochrolechia), O. pertusariae sp. nov. (on Pertusaria hymenea), O. rhizocarpicola sp. nov. (on Rhizocarpon) O. santessonii sp. nov. (on Thamnolia), O. sipei comb. nov. (on Letharia), O. thamnoliae sp. nov. (on Thamnolia), and three undescribed species on Lecanora, Mycoblastus and Usnea. The type of O. cuculare has two distinct lichenicolous species of Odontotrema, and the name is lectotypified on the species growing on Parmeliopsis. A key is given to all lichenicolous species of Odontotrema and Paralethariicola.
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6

KUKWA, MARTIN, IMKE SCHMITT, and DAMIEN ERTZ. "Ochrolechia incarnata comb. nov. (Lecanoromycetes, Ascomycota), a distinct species of the O. parella group from Europe and Macaronesia." Phytotaxa 371, no. 2 (September 27, 2018): 119. http://dx.doi.org/10.11646/phytotaxa.371.2.6.

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Ochrolechia incarnata comb. nov. is reinstated from the synonymy of O. parella. This saxicolous species is morphologically very similar to O. parella, but differs from the latter phylogenetically and chemically in the production of olivetoric acid causing a C+ red reaction of the apothecial margin medulla. Ochrolechia incarnata is so far known from Europe (Ireland, Sweden) and Macaronesia (Canary Islands, Porto Santo). Notes on other saxicolous species with pruinose apothecia are provided, and the taxonomy of O. pallescens is shortly discussed.
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7

Tsurykau, Andrei. "Contribution to the knowledge of lichen-forming and lichenicolous fungi of Gomel region (Belarus)." Botanica Lithuanica 23, no. 2 (December 1, 2017): 123–29. http://dx.doi.org/10.1515/botlit-2017-0013.

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AbstractRecords of 21 species of lichen-forming and lichenicolous fungi new to Gomel region, the south-eastern Belarus are presented. Of these, six species (Bacidia fraxinea, Briancoppinsia cytospora, Calicium parvum, Chaenothecopsis savonica, Enchylium bachmanianum and Intralichen christiansenii) are new to Belarus, seven species (Carbonicola anthracophila, Chaenotheca hispidula, Cornutispora lichenicola, Lichenochora obscuroides, Lichenoconium xanthoriae, Pyrenochaeta xanthoriae and Tremella hypogymniae) have been previously known from one locality in the country. The occurrence of Ochrolechia microstictoides is confirmed with certainty for Belarus. Ochrolechia parella is excluded from the list of lichens of Gomel region as erroneously identified.
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8

REN, Qiang. "A revision of the lichen genus Ochrolechia in China." Lichenologist 49, no. 1 (January 2017): 67–84. http://dx.doi.org/10.1017/s0024282916000529.

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AbstractThe lichen genus Ochrolechia found in China is revised. Twenty taxa are accepted in the genus, including four described as new to science: Ochrolechia alticola, differing from O. mexicana by the larger ascospores and the absence of lichexanthone, and from O. africana by the C+ red reaction of the apothecial margin cortex, the absence of 5-O-methylhiascic acid, and its alpine habitat; O. lijiangensis, differing from O. longispora by the larger apothecia and smaller ascospores, and by the presence of an additional undetermined fatty acid; O. longispora, differing from O. trochophora by the larger ascospores and the presence of two fatty acids; and O. rugomarginata, differing from O. pallescens in the minutely verruculose margins of the mature apothecia, the absence of variolaric acid and the C+ red thallus cortex, and from O. trochophora var. trochophora by the presence of alectoronic acid in the apothecial medulla, the coarsely pruinose disc and a preference for the bark of coniferous trees. Four new taxa are reported for China: Ochrolechia arborea, O. mahluensis, O. szatalaënsis and O. trochophora var. pruinirosella. An identification key to all taxa in the genus known from China is provided.
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9

Brodo, Irwin M. "Studies in the lichen genus Ochrolechia. 2. Corticolous species of North America." Canadian Journal of Botany 69, no. 4 (April 1, 1991): 733–72. http://dx.doi.org/10.1139/b91-099.

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Ochrolechia, a widespread genus of crustose lichens, includes 19 species growing on bark in North America. These corticolous species and several non-North American taxa are treated in this paper. Six species and one variety are described as new: O. antillarum, O. gowardii, O. montana, O. juvenalis, O. pseudopallescens, O. subisidiata, and O. trochophora var. pruinirosella. Two species are reduced to synonymy (O. californica Vers, and O. sorediosa Howard); six species are excluded from the North American flora (O. alboflavescens (Wulf.) Zahlbr., O. apiculata Vers., O. pallescens (L.) Massal., O. parella (L.) Massal., O. rhamni-purshianae Senft, O. subviridis (Höeg) Erichsen, and O. turneri (Sm.) Hasselrot). Several synonymies mentioned in the literature are confirmed (O. trochophora (Vainio) Oshio including O. rosella (Tuck.) Vers. and O. orientalis Vainio; O. androgyna (Hoffm.) Arn. including O. pergranulosa (Räs.) Vers, and O. mahluensis Räs.; and O. yasudae Vainio including O. tuckermanii Vers, and O. pennsylvanica Vers.). A key for the determination of all the species treated is presented together with distribution maps and a summary of the chemistry of the group. 5-O-Methylhiascic and 4,5-di-O-methylhiascic acids are reported from Ochrolechia for the first time. Key words: Ochrolechia, Ascomycotina, Pertusariaceae.
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10

Adamo, P., A. Marchetiello, and P. Violante. "The Weathering of Mafic Rocks by Lichens." Lichenologist 25, no. 3 (July 1993): 285–97. http://dx.doi.org/10.1006/lich.1993.1033.

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AbstractThe weathering phenomena resulting from the growth of six foliose and crustose lichens (Parmelia subrudecta, Xanthoria ectaneoides, Parmelia conspersa, Aspicilia radiosa, Caloplaca sp. and Ochrolechia parella) on three mafic rocks have been studied. The bioweathering results in more or less extensive fragmentation and corrosion of the mineral surfaces immediately beneath the lichen thalli and in the formation, in the thallus or at the rock-lichen interface, of secondary products. The significant amounts of whewellite found in all interfaces, and the bipiramids of weddellite detected at the serpentine rock-Ochrolechia parella interface, suggest that the oxalic acid secreted by the mycobiont is the chemical substance principally involved. The capacity of the lichens to alter their rock substrata does not appear to be related to their thallus morphology.
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Dissertations / Theses on the topic "Ochrolechia"

1

Millot, Marion. "Étude phytochimique de trois lichens crustacés du littoral breton : Ochrolechia parella, Tephromela atra et Diploicia canescens : recherche d’une activité photoprotectrice." Rennes 1, 2008. http://www.theses.fr/2008REN1S059.

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L’étude phytochimique de trois lichens saxicoles du littoral breton : Ochrolechia parella, Tephromela atra et Diploicia canescens a permis d’isoler et de caractériser 25 composés issus du métabolisme secondaire. Ces lichens ont été choisis en fonction de leur habitat et sélectionnés lors d’un criblage préliminaire permettant de repérer les composés absorbant dans le domaine des UVB (280-320 nm) et/ou des UVA (320-400 nm). Trois de ces produits ont été identifiés pour la première fois à partir d’une source naturelle. Diverses évaluations biologiques menées sur les produits isolés en quantité suffisante, ont permis d’apprécier leur cytotoxicité in vitro où de révéler d’autres potentialités (activité antioxydante, induction de la mélanogénèse). Deux depsidones et une bisxanthone s’avèrent être des molécules d’intérêt dans le domaine de la photoprotection : l’acide variolarique, la diploicine et l’acide sécalonique B
A phytochemical study of three saxicolous lichens from the Brittany seashore : Ochrolechia parella, Tephromela atra and Diploicia canescens led to the isolation and structural elucidation of 25 secondary metabolites. These lichens were chosen regarding their environmental situation and after a preliminary screening which allowed us to select compounds absorbing in the UVA (320-400 nm) and/or in the UVB (280-320 nm) range. Most of the isolated compounds were depsidones, some of them halogenated. Various biological evaluations carried out on the products isolated in sufficient amount, permitted to quantify their in vitro cytotoxicity and other activities (antioxidant activity, tyrosinase inhibition, melanogenesis induction). Two depsidones, variolaric acid and diploicin as so as a bisxanthone, secalonic B acid appeared to be valuable compounds to investigate further in the photoprotective domain
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