keyword
MENU ▼
Read by QxMD icon Read
search

Lichenized fungi

keyword
https://www.readbyqxmd.com/read/29211626/molecular-analyses-uncover-the-phylogenetic-placement-of-the-lichenized-hyphomycetous-genus-cheiromycina
#1
Lucia Muggia, Riccardo Mancinelli, Tor Tønsberg, Agnieszka Jablonska, Martin Kukwa, Zdeněk Palice
The genus Cheiromycina is one of the few genera of lichenized hyphomycetes for which no sexual reproductive stages have been observed. The genus includes species from boreal to temperate regions of the Northern Hemisphere where it is found growing on bark or wood. Congeners in Cheiromycina are characterized by a noncorticate thallus, nearly immersed in the substrate and presenting powdery unpigmented sporodochia, and containing chlorococcoid photobionts. The relationships of members of Cheiromycina with other fungi are not known...
November 1, 2017: Mycologia
https://www.readbyqxmd.com/read/29180801/modification-and-functional-adaptation-of-the-mbf1-gene-family-in-the-lichenized-fungus-endocarpon-pusillum-under-environmental-stress
#2
Yanyan Wang, Xinli Wei, Jenpan Huang, Jiangchun Wei
The multiprotein-bridging factor 1 (MBF1) gene family is well known in archaea, non-lichenized fungi, plants, and animals, and contains stress tolerance-related genes. Here, we identified four unique mbf1 genes in the lichenized fungi Endocarpon spp. A phylogenetic analysis based on protein sequences showed the translated MBF1 proteins of the newly isolated mbf1 genes formed a monophyletic clade different from other lichen-forming fungi and Ascomycota groups in general, which may reflect the evolution of the biological functions of MBF1s...
November 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29155927/specialized-fungal-parasites-reduce-fitness-of-their-lichen-hosts
#3
Sonia Merinero, Yngvar Gauslaa
Background and aims: Understanding to what extent parasites affect host fitness is a focus of research on ecological interactions. Fungal parasites usually affect the functions of vascular plants. However, parasitic interactions comprising effects of fungal parasites on the fitness of lichen hosts are less well known. This study assesses the effects of the abundance of two highly specialized gall-forming fungi on growth of their two respective lichen hosts and tests whether these fungal parasites reduce lichen fitness...
November 16, 2017: Annals of Botany
https://www.readbyqxmd.com/read/29105292/ediacaran-developmental-biology
#4
Frances S Dunn, Alexander G Liu, Philip C J Donoghue
Rocks of the Ediacaran System (635-541 Ma) preserve fossil evidence of some of the earliest complex macroscopic organisms, many of which have been interpreted as animals. However, the unusual morphologies of some of these organisms have made it difficult to resolve their biological relationships to modern metazoan groups. Alternative competing phylogenetic interpretations have been proposed for Ediacaran taxa, including algae, fungi, lichens, rhizoid protists, and even an extinct higher-order group (Vendobionta)...
November 3, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/29097759/sequencing-genomes-from-mixed-dna-samples-evaluating-the-metagenome-skimming-approach-in-lichenized-fungi
#5
Anjuli Meiser, Jürgen Otte, Imke Schmitt, Francesco Dal Grande
The metagenome skimming approach, i.e. low coverage shotgun sequencing of multi-species assemblages and subsequent reconstruction of individual genomes, is increasingly used for in-depth genomic characterization of ecological communities. This approach is a promising tool for reconstructing genomes of facultative symbionts, such as lichen-forming fungi, from metagenomic reads. However, no study has so far tested accuracy and completeness of assemblies based on metagenomic sequences compared to assemblies based on pure culture strains of lichenized fungi...
November 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29091345/a-method-for-the-direct-detection-of-airborne-dispersal-in-lichens
#6
S Eaton, C Zuniga, J Czyzewski, C J Ellis, D Genney, D Haydon, N Mirzai, R Yahr
This paper sets out a novel method to determine dispersal distances in lichens. Direct measurement of dispersal often remains difficult for lichens and other small inconspicuous species because of the need to track microscopic reproductive propagules, which even if they can be captured, cannot be identified using traditional morphological approaches. A low-cost device (<£200) was developed in order to trap the reproductive propagules of lichens, capable of sampling around 0.1m(3) of air per minute. In parallel, molecular techniques were developed to enable species specific detection of propagules caught by the devices, with identification using novel species-specific primers and optimization of a standard DNA extraction and nested PCR protocol...
November 1, 2017: Molecular Ecology Resources
https://www.readbyqxmd.com/read/29084151/metabolomic-analysis-of-two-parmotrema-lichens-p-robustum-degel-hale-and-p-andinum-mull-arg-hale-using-uhplc-esi-ot-ms-ms
#7
Alfredo Torres-Benítez, María Rivera-Montalvo, Beatriz Sepúlveda, Olivio N Castro, Edgar Nagles, Mario J Simirgiotis, Olimpo García-Beltrán, Carlos Areche
Lichens are symbiotic associations of fungi with microalgae and/or cyanobacteria. Lichens belonging to the Parmeliaceae family comprise 2700 species of lichens, including the Parmotrema genus which is composed of 300 species. The metabolites of this genus include depsides, depsidones, phenolics, polysaccharides, lipids, diphenylethers and dibenzofurans, which are responsible for the biological activities reported including antidiabetic, antihelmintic, anticancer, antioxidant, antibacterial, anti-inflammatory, antimitotic, antitumoral, antifungal, and antioxidant enzyme inhibitory...
October 30, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29057470/origin-and-evolution-of-chloroplast%C3%A2-group-i-introns-in-lichen-algae
#8
Alicia Del Hoyo, Raquel Álvarez, Francisco Gasulla, Leonardo Mario Casano, Eva María Del Campo
The history of group I introns is characterized by repeated horizontal transfers, even among phylogenetically distant species. The symbiogenetic thalli of lichens are good candidates for the horizontal transfer of genetic material among distantly related organisms, such as fungi and green algae. The main goal of this study was to determine whether there were different trends in intron distribution and properties among Chlorophyte algae based on their phylogenetic relationships and living conditions. Therefore, we investigated the occurrence, distribution and properties of group I introns within the chloroplast LSU rDNA in 87 Chlorophyte algae including lichen and free-living Trebouxiophyceae compared to free-living non-Trebouxiophyceae species...
October 23, 2017: Journal of Phycology
https://www.readbyqxmd.com/read/28993960/effect-of-environmental-parameters-on-biodiversity-of-the-fungal-component-in-lithic-antarctic-communities
#9
Laura Selbmann, Silvano Onofri, Claudia Coleine, Pietro Buzzini, Fabiana Canini, Laura Zucconi
A wide sampling of rocks, colonized by microbial epi-endolithic communities, was performed along an altitudinal gradient from sea level to 3600 m asl and sea distance from the coast to 100 km inland along the Victoria Land Coast, Antarctica. Seventy-two rock samples of different typology, representative of the entire survey, were selected and studied using denaturing gradient gel electrophoresis to compare variation in fungal diversity according to environmental conditions along this altitudinal and sea distance transect...
November 2017: Extremophiles: Life Under Extreme Conditions
https://www.readbyqxmd.com/read/28983096/chlorinated-emodin-as-a-natural-antibacterial-agent-against-drug-resistant-bacteria-through-dual-influence-on-bacterial-cell-membranes-and-dna
#10
Feixia Duan, Guang Xin, Hai Niu, Wen Huang
The rise in infections caused by drug-resistant pathogens and a lack of effective medicines requires the discovery of new antibacterial agents. Naturally chlorinated emodin 1,3,8-trihydroxy-4-chloro-6-methyl-anthraquinone (CE) from fungi and lichens was found to markedly inhibit the growth of Gram-positive bacteria, especially common drug-resistant bacterial strains, including methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococcus faecium (VRE). CE was confirmed to cause significant potassium leakage, cell membrane depolarization and damage to the selective permeability of cell membranes in bacterial cells, resulting in bacterial cell death...
October 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28927934/the-calcium-binding-protein-epann-from-the-lichenized-fungus-endocarpon-pusillum-enhances-stress-tolerance-in-yeast-and-plants
#11
Yongli Zhang, Hui Li, Yanyan Wang, Jiangchun Wei
Annexins are calcium-phospholipid binding proteins that play a significant role in the Ca(2+)signaling pathway. These proteins are essential for plants to effectively respond to abiotic stresses. However, their functions and mechanisms remain largely unknown in fungi. In this study, an annexin gene, Epann, was cloned from the lichenized fungus Endocarpon pusillum, a drought resistant organism. Our results showed that Epann was induced by several abiotic stresses in E. pusillum. Heterologous expression of the Epann gene enhanced the stress tolerance of Saccharomyces cerevisiae...
September 18, 2017: Fungal Genetics and Biology: FG & B
https://www.readbyqxmd.com/read/28892165/environment-and-host-identity-structure-communities-of-green-algal-symbionts-in-lichens
#12
Francesco Dal Grande, Gregor Rolshausen, Pradeep K Divakar, Ana Crespo, Jürgen Otte, Matthias Schleuning, Imke Schmitt
An understanding of how biotic interactions shape species' distributions is central to predicting host-symbiont responses under climate change. Switches to locally adapted algae have been proposed to be an adaptive strategy of lichen-forming fungi to cope with environmental change. However, it is unclear how lichen photobionts respond to environmental gradients, and whether they play a role in determining the fungal host's upper and lower elevational limits. Deep-coverage Illumina DNA metabarcoding was used to track changes in the community composition of Trebouxia algae associated with two phylogenetically closely related, but ecologically divergent fungal hosts along a steep altitudinal gradient in the Mediterranean region...
September 11, 2017: New Phytologist
https://www.readbyqxmd.com/read/28861052/expose-r2-the-astrobiological-esa-mission-on-board-of-the-international-space-station
#13
Elke Rabbow, Petra Rettberg, Andre Parpart, Corinna Panitz, Wolfgang Schulte, Ferdinand Molter, Esther Jaramillo, René Demets, Peter Weiß, Rainer Willnecker
On July 23, 2014, the Progress cargo spacecraft 56P was launched from Baikonur to the International Space Station (ISS), carrying EXPOSE-R2, the third ESA (European Space Agency) EXPOSE facility, the second EXPOSE on the outside platform of the Russian Zvezda module, with four international astrobiological experiments into space. More than 600 biological samples of archaea, bacteria (as biofilms and in planktonic form), lichens, fungi, plant seeds, triops eggs, mosses and 150 samples of organic compounds were exposed to the harsh space environment and to parameters similar to those on the Mars surface...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28860010/conserved-genomic-collinearity-as-a-source-of-broadly-applicable-fast-evolving-markers-to-resolve-species-complexes-a-case-study-using-the-lichen-forming-genus-peltigera-section-polydactylon
#14
Nicolas Magain, Jolanta Miadlikowska, Olaf Mueller, Michael Gajdeczka, Camille Truong, Asaf A Salamov, Inna Dubchak, Igor V Grigoriev, Bernard Goffinet, Emmanuël Sérusiaux, François Lutzoni
Synteny can be maintained for certain genomic regions across broad phylogenetic groups. In these homologous genomic regions, sites that are under relaxed purifying selection, such as intergenic regions, could be used broadly as markers for population genetic and phylogenetic studies on species complexes. To explore the potential of this approach, we found 125 Collinear Orthologous Regions (COR) ranging from 1 to >10kb across nine genomes representing the Lecanoromycetes and Eurotiomycetes (Pezizomycotina, Ascomycota)...
August 30, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28852019/reference-based-radseq-resolves-robust-relationships-among-closely-related-species-of-lichen-forming-fungi-using-metagenomic-dna
#15
Felix Grewe, Jen-Pen Huang, Steven D Leavitt, H Thorsten Lumbsch
Despite increasing availability of phylogenomic datasets, strategies to generate genome-scale data from organisms involved in symbiotic relationships remains challenging. Restriction site-associated DNA sequencing (RADseq) can effectively generated reduced representation genomic loci. However, when using metagenomic DNA from inseparable symbiotic organisms, RADseq loci may belong to any number of the organisms involved in these intimate associations. In this study, we explored the potential for a reference-based RADseq approach to generate data for lichen-forming fungi from metagenomic DNA extracted from intact lichens...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28782804/discovery-of-long-distance-gamete-dispersal-in-a-lichen-forming-ascomycete
#16
Cecilia Ronnås, Silke Werth, Otso Ovaskainen, Gergely Várkonyi, Christoph Scheidegger, Tord Snäll
Accurate estimates of gamete and offspring dispersal range are required for the understanding and prediction of spatial population dynamics and species persistence. Little is known about gamete dispersal in fungi, especially in lichen-forming ascomycetes. Here, we estimate the dispersal functions of clonal propagules, gametes and ascospores of the epiphytic lichen Lobaria pulmonaria. We use hierarchical Bayesian parentage analysis, which integrates genetic and ecological information from multiannual colonization and dispersal source data collected in a large, old-growth forest landscape...
October 2017: New Phytologist
https://www.readbyqxmd.com/read/28771869/its1-metabarcoding-highlights-low-specificity-of-lichen-mycobiomes-at-a-local-scale
#17
Fernando Fernández-Mendoza, Antonia Fleischhacker, Theodora Kopun, Martin Grube, Lucia Muggia
As self-supporting and long-living symbiotic structures, lichens provide a habitat for many other organisms beside the traditionally considered lichen symbionts-the myco- and the photobionts. The lichen-inhabiting fungi either develop diagnostic phenotypes or occur asymptomatically. Because the degree of specificity towards the lichen host is poorly known, we studied the diversity of these fungi among neighbouring lichens on rocks in an alpine habitat. Using a sequencing metabarcoding approach, we show that lichen mycobiomes clearly reflect the overlap of multiple ecological sets of taxa, which differ in their trophic association with lichen thalli...
August 3, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28754979/thresholds-of-biodiversity-and-ecosystem-function-in-a-forest-ecosystem-undergoing-dieback
#18
P M Evans, A C Newton, E Cantarello, P Martin, N Sanderson, D L Jones, N Barsoum, J E Cottrell, S W A'Hara, L Fuller
Ecological thresholds, which represent points of rapid change in ecological properties, are of major scientific and societal concern. However, very little research has focused on empirically testing the occurrence of thresholds in temperate terrestrial ecosystems. To address this knowledge gap, we tested whether a number of biodiversity, ecosystem functions and ecosystem condition metrics exhibited thresholds in response to a gradient of forest dieback, measured as changes in basal area of living trees relative to areas that lacked recent dieback...
July 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28752818/fungal-diversity-revisited-2-2-to-3-8-million-species
#19
David L Hawksworth, Robert Lücking
The question of how many species of Fungi there are has occasioned much speculation, with figures mostly posited from around half a million to 10 million, and in one extreme case even a sizable portion of the spectacular number of 1 trillion. Here we examine new evidence from various sources to derive an updated estimate of global fungal diversity. The rates and patterns in the description of new species from the 1750s show no sign of approaching an asymptote and even accelerated in the 2010s after the advent of molecular approaches to species delimitation...
July 2017: Microbiology Spectrum
https://www.readbyqxmd.com/read/28736865/bioprotection-of-the-built-environment-and-cultural-heritage
#20
Geoffrey Michael Gadd, Thomas D Dyer
The growth of microbial biofilms and various biomineralization phenomena can lead to the formation of stable layers and veneers on rocks known as 'rock varnishes' that can stabilize surfaces and protect from further weathering. This article describes the potential application of fungal systems for bioprotection of rock and mineral-based substrates and the evidence to support this concept of utilizing natural or engineered colonization and metabolic properties of fungi, including lichens.
September 2017: Microbial Biotechnology
keyword
keyword
8392
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"