Page 3532 of 3657 Results 35311 - 35320 of 36569
Id/Author/Year/TitleOrder by:  Year  Id  Author  Title
34663
Vasco-Palacios A.M. & Moncada B. (2022): Two centuries of mycological history in Colombia - In: de Almeida R.F., Lücking R., Vasco-Palacios A.M., Gaya E. & Diazgranados M. (eds), Catalogue of Fungi of Colombia, p. 33–43, Kew Publishing, Royal Botanic Gardens, Kew

Book chapter. Current knowledge about the Colombian funga results from countless expeditions, researchers, and national and foreign institutions that have contributed to the development of mycology in Colombia for more than two centuries. This historical timeline will probably remain incomplete because several historical accounts are difficult to track down, but four different periods are highlighted: 1. Fungal knowledge from pre-Hispanic times is still incomplete despite efforts to compile … EndNote PDF Read more... 

34664
Borisov S.A., Luzina O.A., Khvostov M.V., Tolstikova T.G. & Salakhutdinov N.F. (2022): Synthesis and pharmacological evaluation of (+)-usnic acid derivatives as hypoglycemic agents - Molbank, 2022(4): M1459 [7 p.]

Usnic acid is produced by lichens and exhibits different biological properties, including hypoglycemic ones. However, this effect becomes noticeable only at relatively high doses, something that may lead to some adverse effects. The chemical modification of the molecule is able to enhance its safety profile and its hypoglycemic properties. We synthesized six enamine derivatives of (+)-usnic acid, and two of them are novel. All compounds were evaluated for the hypoglycemic effect after oral introduction … URL EndNote PDF Read more... 

34665
Shelyakin M., Malyshev R., Silina I., Zakhozhiy I. & Golovko T. (2022): UV‑B induced changes in respiration and antioxidant enzyme aktivity in the foliose lichen Peltigera aphthosa (L.) Willd. - Acta Physiologiae Plantarum, 44: 116 [13 p.]

Lichens are phototrophic organisms tolerant to adverse environmental conditions. However, the mechanisms underlying their stress tolerance are not fully understood. For photosynthetic organisms depending on solar radiation, UV-B radiation (280–320 nm) acts as a stress factor. We studied the pro-/antioxidant and respiratory metabolism of Peltigera aphthosa to identify adaptive responses of lichen to a physiological dose of UV-B radiation (14 kJ day− 1 for 10 days). A browning of the upper … URL EndNote PDF Read more... 

34666
Kumar T.K., Siva B., Anand A., Anusha K., Mohabe S., Reddy A.M., Le Devehat F., Tiwari A.K., Boustie J. & Babu K.S. (2022): Comprehensive lichenometabolomic exploration of Ramalina conduplicans Vain [sic!] using UPLC-Q-ToF-MS/MS: An identification of free radical scavenging and anti-hyperglycemic constituents - Molecules, 27(19): 6720 [14 p.]

In this study, we propose ultra-performance liquid chromatography coupled with quadrupole/time-of-flight mass spectrometry (UPLC-QToF-MS/MS)-guided metabolite isolation as a choice analytical approach to the ongoing structure–activity investigations of chemical isolates from the edible lichen, Ramalina conduplicans Vain. This strategy led to the isolation and identification of a new depside (5) along with 13 known compounds (1–4, 6–14), most of which being newly described in this lichen species. … URL EndNote Read more... 

34667
Xu H., Wang L., Feng X. & Gong X. (2022): Core taxa and photobiont‑microbial interaction within the lichen Heterodermia obscurata (Physcsiaceae, Heterodermia) - Symbiosis, 86: 187–204

The dual nature of fungal-algal lichen symbioses is extended by other microbial associations. Increasing evidence has confirmed that lichens are successful holobionts composed of complex and multiple species. Specific interactions between these microbes contributed to the lichens’ health, growth and fitness. Previous studies suggested that the composition of microorganisms in lichens was potentially influenced by the genetic background of the host-symbiont, large-scale geography or different … URL EndNote Read more... 

34669
Wang L., Zhang S., Fang J., Jin X., Mamut R. & Li P. (2022): The chloroplast genome of the lichen photobiont Trebouxiophyceae sp. DW1 and its phylogenetic implications - Genes, 13(10): 1840 [14 p.]

Lichens are symbiotic associations of algae and fungi. The genetic mechanism of the symbiosis of lichens and the influence of symbiosis on the size and composition of the genomes of symbiotic algae have always been intriguing scientific questions explored by lichenologists. However, there were limited data on lichen genomes. Therefore, we isolated and purified a lichen symbiotic alga to obtain a single strain (Trebouxiophyceae sp. DW1), and then obtained its chloroplast genome information by next-generation … URL EndNote PDF Read more... 

34670
Moncada B., Coca L.F., Díaz-Escandón D., Jaramillo-Ciro M., Simijaca D., Soto E. & Lücking R. (2022): Diversity, ecogeography, and importance of lichens of Colombia - In: de Almeida R.F., Lücking R., Vasco-Palacios A.M., Gaya E. & Diazgranados M. (eds), Catalogue of Fungi of Colombia, p. 77–90, Kew Publishing, Royal Botanic Gardens, Kew

Lichenised fungi constitute a substantial portion of the known Colombian fungi, with 2,670 out of 7,241 species. This fairly high number is not because lichens represent a particularly diverse group of fungi but because they are relatively wellstudied in the country compared to non-lichenised fungi. Lichens have traditionally been defined as a symbiosis between a fungus (mycobiont), an alga and/or a cyanobacterium (photobionts). A modern definition also incorporates components of the lichen … EndNote Read more... 

34671
Ismailov A.B. & Volobuev S.V. (2022): Dirina ceratoniae (Arthoniales, Ascomycota): first record from Russia - Turczaninowia, 3: 189–193

The Mediterranean species Dirina ceratoniae (Roccellaceae, Arthoniales) is reported for the first time for Russia, specifically the Greater Caucasus in Daghestan, based on morphological and molecular evidences. The specimen collected on Populus nigra in a coastal lowland region is sorediate and sterile. The sorediate morph is not common in this species and currently known only from a few specimens from the Canary Islands. In the phylogenetic analysis, the ITS1-5.8S-ITS2 sequence obtained … URL EndNote Read more... 

34672
Урбанавичюс Г.П., Урбанавичене И.Н. , Симакова У.В. & Москаленко В.Н. [Urbanavichus G.P., Urbanavichene I.N., Simakova U.V. & Moskalenko V.N.] (2022): Staurolemma omphalarioides (Pannariaceae, Ascomycota) – новый для лихенофлоры России вид и род с полуострова Абрау (Северо-Западный Кавказ) [Staurolemma omphalarioides (Pannariaceae, Ascomycota), a new species and genus for the lichen flora of Russia from Abrau Peninsula (North-Western Caucasus)] - Turczaninowia, 3: 115–120

[in Russian with English summary: ] The genus Staurolemma Körb., represented by the species S. omphalarioides (Anzi) P. M. Jørg. et Henssen, identified both by morphology and using DNA barcoding (ITS1-5.8S-ITS2 gene), is reported for the first time for Russia, based on materials collected in the North-Western Caucasus in the Utrish Reserve on the Abrau Peninsula. The genus Staurolemma is widely distributed in the tropics and subtropics, and only one species S. omphalarioides, has a Mediterranean-Atlantic … URL EndNote Read more... 

34673
Zontikov D.N., Malakhova K.V. & Sergeev R.V. (2022): The use of tissue culture method for the study of lichenized fungi (Lobariaceae Chevall., Parmeliaceae Zenker.) of the European part of Russia - Turczaninowia, 3: 177–188

Lichenized fungi as a multicomponent biological system are an interesting but difficult research object. In view of the complex interaction of the myco- and photobiont, the slow growth of natural thalli, their exceptional exactingness to environmental factors, the study of the biological characteristics of lichens is significantly difficult. This article discusses the problem of studying the anatomical and morphological structure of the myco- and photobiont of lichenized fungi using the tissue … URL EndNote PDF Read more... 

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