Katalog - Lichenological literature

23725

Junttila S., Laiho A., Gyenesei A. & Rudd S. (2013): Whole transcriptome characterization of the effects of dehydration and rehydration on Cladonia rangiferina, the grey reindeer lichen, BMC Genomics, 14: 870 [14 p.]

Background: Lichens are symbiotic organisms with a fungal and an algal or a cyanobacterial partner. Lichens inhabit some of the harshest climates on earth and most lichen species are desiccation-tolerant. Lichen desiccation-tolerance has been studied at the biochemical level and through proteomics, but the underlying molecular genetic mechanisms remain largely unexplored. The objective of our study was to examine the effects of dehydration and rehydration on the gene expression of Cladonia rangiferina. Results: … Read more...

31040

Pizarro D., Dal Grande F., Leavitt S.D., Dyer P.S., Schmitt I., Crespo A., Lumbsch H.T. & Divakar P.K. (2019): Whole-genome sequence data uncover widespread heterothallism in a largest group of lichen-forming fungi, Genome Biology and Evolution, 11(3): 721–730

Fungal reproduction is regulated by the mating-type (MAT1) locus, which typically comprises two idiomorphic genes. The presence of one or both allelic variants at the locus determines the reproductive strategy in fungi-homothallism versus heterothallism. It has been hypothesized that self-fertility via homothallism is widespread in lichen-forming fungi. To test this hypothesis, we characterized the MAT1 locus of 41 genomes of lichen-forming fungi representing a wide range of growth forms and reproductive … Read more...

4751

Dibben M. J. (1971): Whole-lichen culture in a phytotron, Lichenologist, 5: 1-10

28232

Wiens J. J. (2012): Why biogeography matters: historical biogeography vs. phylogeography and community phylogenetics for inferring ecological and evolutionary processes, Frontiers of Biogeography, 4(3): 128–135

Phylogenetic and phylogeographic approaches have become widespread in evolutionary biol‐ ogy, ecology, and biogeography. However, analyses that incorporate inferences from historical biogeography (e.g., timing of colonization of a region) may be essential to answer the most important large‐ scale questions in these fields, but they remain infrequently used. I focus on two examples here. First, I argue that understanding the origins of biodiversity hotspots (and other high‐diversity regions) … Read more...

35246

Bowen H. (1996): Why have species of Lobaria declined in the past century?, British Lichen Society Bulletin, 78: 55-55

30693

Phinney N.H., Gauslaa Y. & Solhaug K.A. (2019): Why chartreuse? The pigment vulpinic acid screens blue light in the lichen Letharia vulpina, Planta, 249: 709–718

Main conclusion: Chlorophyll fluorescence, infrared gas exchange and photoinhibition data consistently show that vulpinic acid in L. vulpina functions as a strong blue light screening compound. The cortical lichen compounds, parietin, atranorin, usnic acid and melanins are known to screen photosynthetically active radiation (PAR), thereby protecting the underlying photobionts. The role of the toxic UV-/blue light-absorbing vulpinic acid in lichen cortices is poorly documented. By comparing … Read more...

34321

Strother I.E., Coxson D. & Goward T. (2022): Why is the rainforest lichen Methuselah’s beard (Usnea longissima) so rare in British Columbia’s inland temperate rainforest?, Botany, 100: 283–299

Coastal (CTR) and inland temperate rainforests (ITR) in western North America share a rich oceanic lichen flora. The distinctive Methuselah’s beard lichen (Usnea longissima Ach.) is an exception to this pattern of shared distributions, with very few ITR locations. Does this absence reflect dispersal limitations or climatic intolerance? To answer this question, we transplanted U. longissima thalli from the CTR to three ITR locations, assessing growth rates against reciprocal CTR transplants. Canopy … Read more...

21520

Lendemer J. (2012): Why Lepraria? Why Lichens? Eight years of studying Lepraria in California, Bulletin of the California Lichen Society, 18(2): 1-6

23112

Bertuzzi S., Davies L., Power S.A. & Tretiach M. (2013): Why lichens are bad biomonitors of ozone pollution?, Ecological Indicators, 34: 391–397

The combined effects of water availability and ozone (O3) on chlorophyll a fluorescence (ChlaF) were studied in three epiphytic lichens selected for their different ecology. The samples were exposed in open top chambers (OTCs) under different watering regimes with O3 AOT40 in the range 0–50,000 ppb. Further samples were exposed in a nearby wood, as controls. ChlaF measurements were taken before exposure, after 3- and 6-week exposure and after a subsequent 2-day recovery period to verify the … Read more...

8919

Doell J. (2002): Why study lichens at all?, Bulletin of the California Lichen Society, 9(2): 9-10