TY - JOUR AU - Aragon, Gregorio AU - Gimenez, Gil Fernando AU - Negron, Valerie AU - Rincon, Marta TI - Unveiling lichen diversity on volcanic substrates: A comparative study across mainland Spain JF - JOURNAL OF ARID ENVIRONMENTS J2 - J ARID ENVIRON VL - 231 PY - 2025 PG - 9 SN - 0140-1963 DO - 10.1016/j.jaridenv.2025.105455 UR - https://m2.mtmt.hu/api/publication/36382425 ID - 36382425 AB - Volcanic rocks harbor an interesting biota well-adapted to the stressful conditions imposed by the environment. Lichens species, with their remarkable resilience, are the most conspicuous organisms colonizing these ecosystems reflecting higher percentages of volcanic rocks coverage. This study provides a comprehensive analysis of lichen diversity across mainland Spain, focusing on the different locations of the volcanic zones and volcanism type, aiming to investigate differences in species richness, frequency, and functionality in four volcanic zones: central, northeastern, southeastern coastal, and southeastern inland. Fieldwork and literature review were used to compile a dataset of 360 lichen species from 85 localities. The results indicate that regional differences in species composition are driven by location of the volcanic zones. Functional traits such as growth forms, photobiont types, and secondary metabolites exhibit similarities across volcanic zones. At a local scale, differences in lichen composition appear influenced by the chemical composition of volcanic rocks. The findings underscore that despite high species turnover between volcanic zones, functionality remains consistent, with a clear dominance of species developing crustose thalli with green algal photobionts and secondary metabolites offering photoprotection in these harsh environments. This research helps fill the knowledge gap on lichen diversity in the Iberian Peninsula's volcanic regions. LA - English DB - MTMT ER - TY - JOUR AU - Mishra, Anamika AU - Vítek, Petr AU - Barták, Miloš AU - Mishra, Kumud Bandhu TI - Antarctic lichens exhibit diverse photobiont distributions and a complex regulation of non-photochemical quenching JF - SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY J2 - SPECTROCHIM ACTA A VL - 332 PY - 2025 SN - 1386-1425 DO - 10.1016/j.saa.2025.125810 UR - https://m2.mtmt.hu/api/publication/35752153 ID - 35752153 LA - English DB - MTMT ER - TY - JOUR AU - Vitorino, Luciana Cristina AU - Rosa, Marcio AU - Cruvinel, Barbara Goncalves AU - Marques, Matheus Mendonca de Souza AU - Dos, Santos Alex Marcelino AU - Bessa, Layara Alexandre TI - Photochemical Responses of Parmotrema tinctorum and Usnea barbata to Light Variations in Cerrado Landscapes JF - PLANTS-BASEL J2 - PLANTS-BASEL VL - 14 PY - 2025 IS - 17 PG - 25 SN - 2223-7747 DO - 10.3390/plants14172802 UR - https://m2.mtmt.hu/api/publication/36383205 ID - 36383205 AB - Epiphytic lichens are vital to tropical biodiversity, their distribution shaped by light. Parmotrema tinctorum and Usnea barbata, common in open Cerrado, endure high radiation, necessitating photoprotection. This study tested the hypothesis that the primary photochemistry of P. tinctorum and U. barbata responds differentially to light conditions across distinct landscapes of the Brazilian Savanna, to the height at which lichens were sampled, and to radiation levels from different components of the visible spectrum. Our results demonstrate that P. tinctorum and U. barbata possess efficient photoprotective mechanisms, such as energy dissipation as heat, which enable their survival in the dry and highly illuminated landscapes of the Brazilian Savanna. In particular, stressful environments such as Cerrado and Cerrado Ralo exhibited high DI0/RC values, leading to lower photochemical performance in lichen thalli. However, U. barbata showed greater resilience to light stress than P. tinctorum, likely due to the presence of antioxidant metabolites such as usnic acid. Lichens sampled at higher stem positions and exposed to elevated levels of photosynthetically active radiation (PAR) dissipated less energy as heat and exhibited lower photochemical performance, suggesting photosystem II (PSII) damage under these conditions. Conversely, when different components of the visible spectrum were analyzed separately, increasing light intensities reduced DI0/RC and enhanced Pi_ABS in the thalli, highlighting photodamage resistance in P. tinctorum and U. barbata. The ability of both species to adapt to high-light environments, combined with their physiological plasticity, supports their broad distribution in these tropical ecosystems. LA - English DB - MTMT ER - TY - JOUR AU - Dziurowicz, Patrycja AU - Fałowska, Patrycja AU - Waszkiewicz, Karolina AU - Wietrzyk-Pełka, Paulina AU - Węgrzyn, Michał TI - Effect of light stress on maximum photochemical efficiency of photosystem II and chloroplast structure in cryptogams Cladonia mitis and Pleurozium schreberi JF - ECOLOGICAL QUESTIONS J2 - ECOLOGICAL QUESTIONS VL - 35 PY - 2024 IS - 3 SP - 1 EP - 29 PG - 29 SN - 1644-7298 DO - 10.12775/EQ.2024.039 UR - https://m2.mtmt.hu/api/publication/34894513 ID - 34894513 AB - Lichens and bryophytes are cosmopolitan organisms found in diverse environments with varying sunlight availability. However, excessive light can be a stress factor for both lichens and bryophytes, as it can damage their photosynthetic apparatus, particularly the chlorophyll a and b pigments located in the chloroplasts. The measurement of photosynthetic activity and the use of fluorescence microscopy allows the assessment of the influence of light as a stress factor on the preservation state of the thallus. The main goal of our research was to determine the changes that occur in the photosynthetic activity and structure of chloroplasts of selected species lichen Cladonia mitis (Sandst.) and moss Pleurozium schreberi (Willd. Ex Brid.) under the influence of different light intensity in laboratory conditions: FL - 100% light, RL - 30% maximum light, and NL - natural sunlight. The results of the two-factor analysis of variance (ANOVA) tests showed a variation in the activities of the selected species over time depending on the amount of light energy supplied. It was also demonstrated that soaking lichens increased their photosynthetic activity, whereas in bryophytes, it had the opposite effect, decreasing it. The microscopic results showed that Cladonia mitis showed the lowest level of chloroplast fluorescence in the strongest and reduced light, which coincides with its low level of photosynthetic activity. The mosses exhibited strong fluorescence activity of the chloroplasts, suggesting its significantly higher resistance to light radiation. LA - English DB - MTMT ER - TY - JOUR AU - Fałowska, Patrycja AU - Dziurowicz, Patrycja AU - Waszkiewicz, Karolina AU - Wietrzyk-Pełka, Paulina AU - Węgrzyn, Michał Hubert TI - The Impacts of Sunlight on the Lichen Scots Pine Forest Community JF - FORESTS J2 - FORESTS VL - 15 PY - 2024 IS - 4 SP - 675 SN - 1999-4907 DO - 10.3390/f15040675 UR - https://m2.mtmt.hu/api/publication/34781425 ID - 34781425 AB - The habitat of the lichen Scots pine forest is currently one of the communities that requires attention and active protection due to its rapid disappearance. In our study, we identified factors that can be modified to preserve this habitat. The primary focus of our research was on the significance of tree height and sunlight in fostering the development of a lichen-rich layer within the lichen Scots pine forest. Additionally, we investigated the environmental factors influencing the presence of specific species of lichens and bryophytes, including those that form communities and those that displace species characteristic of the lichen Scots pine forest community. Our study was conducted in Bory Tucholskie National Park (N-W Poland) using 20 experimental sites and 248 point-frame plots from spring 2021 to winter 2022. Fieldwork involved species surveys, measurements of photosynthetic activity in lichens and bryophytes, and collection of environmental data. Through parametric testing, modeling, and mapping, our main findings confirmed that light availability, influenced by tree height, is a critical factor in maintaining a well-preserved lichen-rich layer and facilitating habitat reintroduction. LA - English DB - MTMT ER - TY - JOUR AU - Farkas, Edit AU - Kirika, Paul M. AU - Szabó, Krisztina AU - Muhoro, Arthur TI - Concentration Data of (+)-Usnic Acid Enantiomer from Some European and African Samples of Flavoparmelia caperata (L.) Hale (Parmeliaceae, Lichenised Ascomycota) – Results of a Preliminary Study JF - CRYPTOGAMIE MYCOLOGIE J2 - CRYPTOGAMIE MYCOL VL - 45 PY - 2024 IS - 7 SP - 71 EP - 82 PG - 12 SN - 0181-1584 DO - 10.5252/cryptogamie-mycologie2024v45a7 UR - https://m2.mtmt.hu/api/publication/35059731 ID - 35059731 N1 - HUN-REN Centre for Ecological Research, Institute of Ecology and Botany, Alkotmány u. 2-4, Vácrátót, H-2163, Hungary Mycology Section, Botany Department, Ea Herbarium, National Museums of Kenya, P.O. Box 45166 ,Museum Hill, Nairobi, 00100 GPO, Kenya Doctoral School of Biological Sciences, Hungarian University of Agriculture and Life Sciences, Páter K. u. 1, Gödöllo, H-2100, Hungary Export Date: 24 September 2024 CODEN: CRMYD Correspondence Address: Farkas, E.; HUN-REN Centre for Ecological Research, Alkotmány u. 2-4, Hungary; email: farkas.edit@ecolres.hu LA - English DB - MTMT ER - TY - JOUR AU - Farkas, Edit AU - Xu, Maonian AU - Muhoro, Arthur AU - Szabó, Krisztina AU - Lengyel, Attila AU - Heiðmarsson, Starri AU - Viktorsson, Elvar Örn AU - Ólafsdóttir, Elín Soffia TI - The algal partnership is associated with quantitative variation of lichen specific metabolites in Cladonia foliacea from Central and Southern Europe JF - SYMBIOSIS J2 - SYMBIOSIS VL - 92 PY - 2024 SP - 403 EP - 419 PG - 17 SN - 0334-5114 DO - 10.1007/s13199-024-00982-8 UR - https://m2.mtmt.hu/api/publication/34741626 ID - 34741626 N1 - Institute of Ecology and Botany, HUN-REN Centre for Ecological Research, Alkotmány u. 2-4, Vácrátót, H-2163, Hungary Faculty of Pharmaceutical Sciences, University of Iceland, Hofsvallagata 53, Reykjavik, IS-107, Iceland Doctoral School of Biological Sciences, Hungarian University of Agriculture and Life Sciences, Páter K. u. 1, Gödöllő, H-2100, Hungary HUN-REN-EKKE Lendület Environmental Microbiome Research Group, Leányka u. 6, H-3300, Eger, Hungary Northwest Iceland Nature Research Centre, Sauðárkrókur, IS-550, Iceland Export Date: 24 September 2024 CODEN: SYMBE Correspondence Address: Farkas, E.; Institute of Ecology and Botany, Alkotmány u. 2-4, Hungary; email: farkas.edit@ecolres.hu AB - Lichen specific metabolites (LSMs) have interesting biological activities and quantitative variations may be present intraspecifically. For example, variations in medullary fumarprotocetraric acid (FA) and cortical usnic acid (UA) were observed in the lichen Cladonia foliacea , but the mechanism of variation is not well understood. The current study aimed to characterise the quantitative variation of FA and UA and to investigate the association between lichen metabolite content and ecological / biological variables. Fungal and algal trees were constructed using fungal (nrITS, RPB2) and algal (nrITS) loci, respectively. Using a chiral chromatographic method, the contents of (-)-UA were determined in 29 C. foliacea specimens and range from 6.88 to 34.27 mg/g dry wt. The FA contents were lower and varied from 1.44 to 9.87 mg/g dry wt. Although the fungal tree showed two well resolved clades, no significant differences of UA or FA contents were found between the two fungal clades. However, a significantly higher UA/FA ratio as well as a unique habitat were found to be associated with specimens which contained the alga Asterochloris lobophora than those specimens associated other Asterochloris algae. Taking all predictive variables into account (i.e. substrate type, elevation, collection season, photobiont identity), the multivariate data analysis indicated that photobiont identity explained most of the variance of LSM contents in C. foliacea . Thus future LSM biosynthetic studies should take the photobiont into consideration when dealing with intraspecific quantitative variation. LA - English DB - MTMT ER - TY - JOUR AU - Želježić, Davor AU - Kovačević, Goran AU - Matijević, Ana AU - Korać, Petra AU - Mihalić, Katarina Caput TI - Does the Symbiotic Relationship Between Hydra Viridissima and Photoautotrophic Alga Provide an Evolutionary Advantage in Protecting DNA against Damage by the Cytotoxic or Genotoxic Mode of Action of Environmental Stressors? JF - BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY J2 - B ENVIRON CONTAM TOX VL - 112 PY - 2024 IS - 4 SN - 0007-4861 DO - 10.1007/s00128-024-03884-z UR - https://m2.mtmt.hu/api/publication/34894229 ID - 34894229 LA - English DB - MTMT ER - TY - JOUR AU - Aszalósné Balogh, Rebeka AU - Farkas, Edit AU - Tüdősné Budai, Júlia AU - Lőkös, László AU - Matus, Gábor TI - Cryptogamic Biomass in Pannonic Acidic Sand Steppes Subject to Changing Land-Use JF - PLANTS-BASEL J2 - PLANTS-BASEL VL - 12 PY - 2023 IS - 16 PG - 25 SN - 2223-7747 DO - 10.3390/plants12162972 UR - https://m2.mtmt.hu/api/publication/34105748 ID - 34105748 N1 - Export Date: 5 December 2023 Correspondence Address: Aszalósné Balogh, R.; Department of Applied Plant Biology, Böszörményi u. 138, Hungary; email: rbalogh@agr.unideb.hu AB - Cryptogams, often neglected in vegetation dynamics studies, compose a large part of biomass and contribute to the biodiversity of sandy grasslands. Since the work of Verseghy (1970s), their productivity has not been analyzed in Hungary. We studied the lichen and bryophyte dynamics (hereinafter called cryptogams) at two Eastern Hungarian dry sandy grassland sites. The sites of Corynephorus canescens and of Festuca vaginata dominance, respectively, belonging to the community Festuco vaginatae–Corynephoretum have been monitored. We aimed at (1) quantifying the diversity and biomass of the cryptogamic communities; (2) exploring the cryptogamic response to management changes; and (3) studying the effect of experimental management (fencing) on the cryptogamic assemblages. The sites have been compared in 2013 and 2018, respectively. Forty microplots per site per management have been analyzed in both years. Samples of lichens and bryophytes were hand-sorted, dried and then measured. Fencing has led to increased biomass of cryptogams within a few years. Lichens in general benefited comparatively more from exclosure than bryophytes. The increase in lichen biomass (especially that of Cladonia rangiformis) is clearly due to the over 10-year absence of grazing. The only lichen favored by moderate grazing is the legally protected C. magyarica. Short spells of low-intensity grazing can promote the species richness of cryptogams in the community. LA - English DB - MTMT ER - TY - THES AU - Aszalósné Balogh, Rebeka TI - Természetközeli és szünantróp kriptogám közösségek szerveződése PB - Debreceni Egyetem Juhász‐Nagy Pál Doktori Iskola PY - 2023 UR - https://m2.mtmt.hu/api/publication/35752209 ID - 35752209 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Dziurowicz, Patrycja AU - Falowska, Patrycja AU - Waszkiewicz, Karolina AU - Wietrzyk-Pelka, Paulina AU - Wegrzyn, Michal H. TI - CHANGES IN PHOTOSYNTHETIC ACTIVITY OF THE LICHEN CLADONIA MITIS AND THE MOSS PLEUROZIUM SCHREBERI UNDER ARTIFICIAL HIGH-ENERGY LIGHTING IN LABORATORY CONDITIONS JF - ACTA BIOLOGICA CRACOVIENSIA SERIES BOTANICA J2 - ACTA BIOL CRACOV BOT VL - 64 PY - 2022 IS - 2 SP - 23 EP - 33 PG - 11 SN - 0001-5296 DO - 10.24425/abcsb.2022.143381 UR - https://m2.mtmt.hu/api/publication/34231354 ID - 34231354 AB - Assessment of photosynthetic activity is one of the quick and simple methods of verification whether the studied environmental factors have a stressful effect on photosynthetically active organisms. High-intensity light can be a stress factor that could have a potential impact on the maximum productivity of photosystem II. The purpose of the conducted research was to observe changes in photosynthetic activity of the lichen Cladonia mitis and the bryophyte Pleurozium schreberi exposed to artificial high-energy lighting under laboratory culture conditions. The obtained results showed variability of photosynthetic activity over time, depending on the amount of light energy supplied. C. mitis and P. schreberi at full exposure (light energy: 52.03 W m-2 and photosynthetically active radiation 167.24 mu mol m-2) showed a slow downward trend in photosynthetic activity, while at half the light intensity periodic fluctuations were observed without changes in the controls. Long-term and high-light intensity exposure of photosynthetically active organisms may cause gradual degradation of the photosynthetic apparatus, which in turn leads to cell death. Low values of photosynthetic activity may indicate a situation in which, due to excess light, the rate of photosystem II damage exceeds the rate of its repair. This leads to irreversible damage to the photosynthetic apparatus. LA - English DB - MTMT ER - TY - JOUR AU - Veres, Katalin AU - Sinigla, Mónika AU - Szabó, Krisztina AU - Varga, Nóra AU - Farkas, Edit TI - The long-term effect of removing the UV-protectant usnic acid from the thalli of the lichen Cladonia foliacea JF - MYCOLOGICAL PROGRESS J2 - MYCOL PROG VL - 21 PY - 2022 IS - 9 SN - 1617-416X DO - 10.1007/s11557-022-01831-y UR - https://m2.mtmt.hu/api/publication/33077671 ID - 33077671 N1 - Funding Agency and Grant Number: ELKH Centre for Ecological Research; National Research Development and Innovation Fund [NKFI K 124341-PI: EF] Funding text: Open access funding provided by ELKH Centre for Ecological Research. This work was supported by the project financed by the National Research Development and Innovation Fund (NKFI K 124341-PI: EF). AB - Terricolous lichens are abundant in semi-arid areas, where they are exposed to high irradiation. Photoprotection is essential for the algae as the photobiont provides the primer carbon source for both symbionts. The UV-protectant lichen metabolites and different quenching procedures of the alga ensure adequate photoprotection. Since the long-term effect of diminishing UV-protectant lichen metabolites is unknown, a major part of lichen secondary metabolites was removed from Cladonia foliacea thalli by acetone rinsing, and the lichens were then maintained under field conditions to investigate the effect on both symbionts for 3 years. Our aim was to determine if the decreased level of UV-protectant metabolites caused an elevated photoprotection in the algae and to reveal the dynamics of production of the metabolites. Photosynthetic activity and light protection were checked by chlorophyll a fluorescence kinetics measurements every 6 months. The concentrations of fumarprotocetraric and usnic acids were monitored by chromatographic methods. Our results proved that seasonality had a more pronounced effect than that of acetone treatment on the function of lichens over a long-term scale. Even after 3 years, the acetone-treated thalli contained half as much usnic acid as the control thalli, and the level of photoprotection remained unchanged in the algae. However, the amount of available humidity was a more critical limiting environmental factor than the amount of incoming irradiation affecting usnic acid production. The lichenicolous fungus Didymocyrtis cladoniicola became relatively more abundant in the acetone-treated samples than in the control samples, indicating a slight change caused by the treatment. LA - English DB - MTMT ER -