Results 21 to 30 of about 1,243 (138)

Symbiotic interactions in the lichen Ramalina farinacea dramatically modify NO biosynthetic source in Trebouxia microalgae

Algal Research, 2023
We would like to thank Dr. J. Montero (URJC) and Prof. R. Catalá (CIB-CSIC) for their help and support in the immunodetection experiments, to Prof. M. Tetriach's group and Prof. L. Muggia for hosting JE in their laboratory at Trieste University and instructing her in the isolation and culture of mycobionts.
Expósito, Joana R., Barreno, Eva, Catalá, Myriam   +2 more
openaire   +3 more sources

Phytochemical Analysis, Cytotoxic, Antioxidant, and Antibacterial Activities of Lichens. [PDF]

Evid Based Complement Alternat Med, 2020
Background. Lichens present a complex symbiotic relationship between a filamentous fungus, photoautotrophic partner (algae or cyanobacteria), and bacterial community. The Objective of the Study. This study aimed at investigating the chemical composition and cytotoxic, antioxidant, and antimicrobial activities of acetone extracts of Moroccan Evernia ...
Aoussar N, Laasri FE, Bourhia M, Manoljovic N, Mhand RA, Rhallabi N, Ullah R, Shahat AA, Noman OM, Nasr FA, Almarfadi OM, El Mzibri M, Vasiljević P, Benbacer L, Mellouki F.   +14 more
europepmc   +2 more sources

Studies on the epiphytic Ramalina farinacea (L.) Ach. complex (Lichens) in Sardinia (Italy)

Webbia, 1999
Summary The morphology, chemistry and ecology of 96 specimens belonging to the Ramalina farinacea (L.) Ach. complex collected throughout Sardinia (Italy) have been analysed. Five compounds have been detected by mean of TLC. Variolaric acid is reported as new in R. farinacea from Italy.
Luciana Zedda
exaly   +2 more sources

Different strategies to achieve Pb-tolerance by the two Trebouxia algae coexisting in the lichen Ramalina farinacea [PDF]

Journal of Plant Physiology, 2012
Lichen thalli are permeable to airborne substances, including heavy metals, which are harmful to cell metabolism. Ramalina farinacea shows a moderate tolerance to Pb. This lichen comprises two Trebouxia phycobionts, provisionally referred to as TR1 and TR9, with distinct physiological responses to acute oxidative stress.
Álvarez, Raquel, Del Hoyo, Alicia, García Breijo, Francisco José, Reig Armiñana, José, del Campo, Eva María, Guéra, Alfredo, Barreno, Eva, Casano, Leonardo M.   +7 more
openaire   +5 more sources

ACCUMULATION OF CR6+, PB2+ AND CD2+ AND ULTRAVIOLET RADIATION ALTER METHYLATION AND GENOMIC DNA STATUS IN RAMALINA FARINACEAE

Communications Faculty of Science University of Ankara Series C Biology Geological Engineering and Geophysical Engineering, 2021
In this study was aimed to determine the genotoxic effect of Ramalina farinacea lichen species against stress sources at the molecular level. After applying three different heavy metals (Pb2+, Cd2+, and Cr6+) to the R. farinacea, the extent to which the lichen sample absorbed these metals was determined by Flame Atomic Absorption Spectroscopy. RAPD and
Rasim HAMUTOĞLU, Demet CANSARAN DUMAN, Mehmet Kürşat DERİCİ, Sumer ARAS, Ali ASLAN   +4 more
core   +4 more sources

Secondary Chemistry of Lichen-forming Fungi: Chemosyndromic Variation and DNA-analyses of Cultures and Chemotypes in the Ramalina farinacea Complex

Bryologist, 2004
The Ramalina farinacea (L.) Ach. complex has a world-wide distribution. The thalli are highly variable both morphologically and chemically, with various β-orcinol depsidones being produced as secondary medullary compounds. In the present study a new, rare chemotype containing cyclographin was detected by HPLC analyses.
Martin Grube, Elfie Stocker-Wörgötter   +1 more
exaly   +2 more sources

Lichen Rehydration in Heavy Metal-Polluted Environments: Pb Modulates the Oxidative Response of Both Ramalina farinacea Thalli and Its Isolated Microalgae [PDF]

Microbial Ecology, 2014
Lichens are adapted to desiccation/rehydration and accumulate heavy metals, which induce ROS especially from the photobiont photosynthetic pigments. Although their mechanisms of abiotic stress tolerance are still to be unravelled, they seem related to symbionts' reciprocal upregulation of antioxidant systems.
Álvarez, R., Hoyo, Alberto del, Díaz-Rodríguez, C., Coello, A. J., del Campo López, Eva María, Barreno Rodríguez, Eva, Catalá, M., Casano, Leonardo M.   +7 more
openaire   +5 more sources

Respuestas de los ficobiontes de "Ramalina farinacea" frente al estrés oxidativo [PDF]

, 2015
Ramalina farinacea (L.) Ach. es un ascoliquen epífito de tipo fruticuloso con una amplia distribución geográfica, en el que coexisten los mismos dos ficobiontes (provisionalmente: Trebouxia sp. TR1 y Trebouxia sp. TR9) predominando uno u otro dependiendo del área geográfica.
Álvarez Cubero, Raquel
core   +4 more sources

How to build a lichen: from metabolite release to symbiotic interplay

New Phytologist, Volume 238, Issue 4, Page 1362-1378, May 2023., 2023
Summary Exposing their vegetative bodies to the light, lichens are outstanding amongst other fungal symbioses. Not requiring a pre‐established host, ‘lichenized fungi’ build an entirely new structure together with microbial photosynthetic partners that neither can form alone.
Gregor Pichler, Lucia Muggia, Fabio Candotto Carniel, Martin Grube, Ilse Kranner   +4 more
wiley   +1 more source

Valorisation of the Effects of Bioactive Compounds of the Ethanolic Extract of Ramalina Farinacea (Ramalinaceae) on the Development, Eating and Pupation Behavior of Drosophila Melanogaster (Diptera: Drosophilidae)

Journal of Bioresource Management, 2021
Plants are rich in bioactive chemical secondary metabolites and have proven insecticidal activity by killing or repelling insects. In this work, we aim to evaluate the direct and delayed effects of ethanolic plant extracts on the vinegar fly ...
Fatma Zohra Saadane , Nour El Imene Boublata , Sarra Habbachi, Abir Bouzar , Waffa Habbachi   +4 more
doaj   +1 more source