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Xanthoria parietina

ABSTRACT: A widely distributed, foliose, yellow lichen

PROVIDER: PRJNA62739 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	ERR13670053_1.fastq.gz	Fastqsanger.gz
	ERR13670053_2.fastq.gz	Fastqsanger.gz
	ERR13660094.fastq.gz	Fastqsanger.gz
	ERR14749166_1.fastq.gz	Fastqsanger.gz

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Xanthoria parietina strain:46-1

Project description:Xanthoria parietina 46-1 Gene Expression Profiling - L28 Lichen thallus 3 transcriptome

| PRJNA584077 | ENA

Xanthoria parietina strain:46-1

Project description:Xanthoria parietina 46-1 Gene Expression Profiling - L26 Lichen thallus 1 transcriptome

| PRJNA584075 | ENA

Xanthoria parietina strain:46-1

Project description:Xanthoria parietina 46-1 Gene Expression Profiling - L27 Lichen thallus 2 transcriptome

| PRJNA584076 | ENA

Survivability of the lichen Xanthoria parietina in simulated Martian environmental conditions.

Project description:Xanthoria parietina (L.) Th. Fr. is a widely spread foliose lichen showing high tolerance against UV-radiation thanks to parietin, a secondary lichen substance. We exposed samples of X. parietina under simulated Martian conditions for 30 days to explore its survivability. The lichen's vitality was monitored via chlorophyll a fluorescence that gives an indication for active light reaction of photosynthesis, performing in situ and after-treatment analyses. Raman spectroscopy and TEM were used to evaluate carotenoid preservation and possible variations in the photobiont's ultrastructure respectively. Significant differences in the photo-efficiency between UV irradiated samples and dark-kept samples were observed. Fluorescence values correlated with temperature and humidity day-night cycles. The photo-efficiency recovery showed that UV irradiation caused significant effects on the photosynthetic light reaction. Raman spectroscopy showed that the carotenoid signal from UV exposed samples decreased significantly after the exposure. TEM observations confirmed that UV exposed samples were the most affected by the treatment, showing chloroplastidial disorganization in photobionts' cells. Overall, X. parietina was able to survive the simulated Mars conditions, and for this reason it may be considered as a candidate for space long-term space exposure and evaluations of the parietin photodegradability.

| S-EPMC10039903 | biostudies-literature

Enhanced culturing techniques for the mycobiont isolated from the lichen <i>Xanthoria parietina</i>.

Project description:Lichens and their isolated symbionts are potentially valuable resources for biotechnological approaches. Especially mycobiont cultures that produce secondary lichen products are receiving increasing attention, but lichen mycobionts are notoriously slow-growing organisms. Sufficient biomass production often represents a limiting factor for scientific and biotechnological investigations, requiring improvement of existing culturing techniques as well as methods for non-invasive assessment of growth. Here, the effects of pH and the supplement of growth media with either D-glucose or three different sugar alcohols that commonly occur in lichens, D-arabitol, D-mannitol and ribitol, on the growth of the axenically cultured mycobiont isolated from the lichen Xanthoria parietina were tested. Either D-glucose or different sugar alcohols were offered to the fungus at different concentrations, and cumulative growth and growth rates were assessed using two-dimensional image analysis over a period of 8 weeks. The mycobiont grew at a pH range from 4.0 to 7.0, whereas no growth was observed at higher pH values. Varying the carbon source in Lilly-Barnett medium (LBM) by replacing 1% D-glucose used in the originally described LBM by either 1%, 2% or 3% of D-mannitol, or 3% of D-glucose increased fungal biomass production by up to 26%, with an exponential growth phase between 2 and 6 weeks after inoculation. In summary, we present protocols for enhanced culture conditions and non-invasive assessment of growth of axenically cultured lichen mycobionts using image analysis, which may be useful for scientific and biotechnological approaches requiring cultured lichen mycobionts.Supplementary informationThe online version contains supplementary material available at 10.1007/s11557-021-01707-7.

| S-EPMC8550697 | biostudies-literature

eDNA metabarcoding reveals microbial eukaryotes and mesofauna associated with the lichens Xanthoria parietina and Punctelia subrudecta

Project description:Lichen protists

| PRJEB100522 | ENA

Nitrogen and carbon isotope variability in the green-algal lichen Xanthoria parietina and their implications on mycobiont-photobiont interactions.

Project description:Stable isotope patterns in lichens are known to vary largely, but effects of substrate on carbon and nitrogen stable isotope signatures of lichens were previously not investigated systematically. N and C contents and stable isotope (?(15)N, ?(13)C) patterns have been measured in 92 lichen specimens of Xanthoria parietina from southern Bavaria growing on different substrates (bark and stone). Photobiont and mycobiont were isolated from selected populations and isotopically analyzed. Molecular investigations of the internal transcribed spacer of the nuclear ribosomal DNA (ITS nrDNA) region have been conducted on a subset of the specimens of X. parietina. Phylogenetic analysis showed no correlation between the symbionts X. parietina and Trebouxia decolorans and the substrate, isotope composition, or geographic origin. Instead specimens grown on organic substrate significantly differ in isotope values from those on minerogenic substrate. This study documents that the lichens growing on bark use additional or different N sources than the lichens growing on stone. ?(15)N variation of X. parietina apparently is controlled predominantly by the mass fraction of the mycobiont and its nitrogen isotope composition. In contrast with mycobionts, photobionts of X. parietina are much more (15)N-depleted and show less isotopic variability than mycobionts, probably indicating a mycobiont-independent nitrogen acquisition by uptake of atmospheric ammonia.

| S-EPMC3539006 | biostudies-literature

The bromoperoxidase from the lichen Xanthoria parietina is a novel vanadium enzyme.

Project description:A novel bromoperoxidase was isolated from the lichen Xanthoria parietina. The enzyme contained vanadium, which is essential for enzymic activity. Under denaturating conditions the preparation showed a single protein band with an Mr of 65,000. Thermal-denaturation studies showed that this bromoperoxidase could tolerate high temperatures. The affinity of the enzyme for its substrate bromide is high; the Km for bromide was 29 microM. Excess halides (50 mM) inhibited enzymic activity considerably.

| S-EPMC1148531 | biostudies-other

Xanthoria parietina 46-1-SA22

Project description:Xanthoria parietina 46-1-SA22 Genome sequencing

| PRJNA62697 | ENA

Xanthoria parietina strain:46-1

Project description:Xanthoria parietina 46-1 Gene Expression Profiling - F24 Axenic Culture 1 transcriptome

| PRJNA584072 | ENA