Apothecia and Ascospores of Lobaria oregana and Lobaria pulmonaria Investigated

Mycologia ◽  
2003 ◽  
Vol 95 (3) ◽  
pp. 513 ◽  
Author(s):  
William C. Denison
Keyword(s):  
Lobaria Pulmonaria ◽  
Lobaria Oregana

Reduction of paw edema and liver oxidative stress in carrageenan-induced acute inflammation by Lobaria pulmonaria and Parmelia caperata, lichen species, in mice

2019 ◽  
pp. 1-9
Author(s):  
Samira Salem ◽  
Essaid Leghouchi ◽  
Rachid Soulimani ◽  
Jaouad Bouayed
Keyword(s):  
Time Course ◽  
Acute Inflammation ◽  
Lichen Species ◽  
Paw Edema ◽  
Sod Activity ◽  
Edema Formation ◽  
Lobaria Pulmonaria ◽  
Anti Inflammatory ◽  
Endogenous Antioxidant ◽  
Inflammatory Effect

Abstract. Paw edema volume reduction is a useful marker in determining the anti-inflammatory effect of drugs and plant extracts in carrageenan-induced acute inflammation. In this study, the anti-inflammatory effect of Lobaria pulmonaria (LP) and Parmelia caperata (PC), two lichen species, was examined in carrageenan-induced mouse paw edema test. Compared to the controls in carrageenan-induced inflammation (n = 5/group), our results showed that pretreatment by single oral doses with PC extract (50–500 mg/kg) gives better results than LP extract (50–500 mg/kg) in terms of anti-edematous activity, as after 4 h of carrageenan subplantar injection, paw edema formation was inhibited at 82–99% by PC while at 35–49% by LP. The higher anti-inflammatory effect of PC, at all doses, was also observed on the time-course of carrageenan-induced paw edema, displaying profile closely similar to that obtained with diclofenac (25 mg/kg), an anti-inflammatory drug reference (all p < 0.001). Both LP and PC, at all doses, significantly ameliorated liver catalase (CAT) activity (all p < 0.05). However, superoxide dismutase (SOD) activity, glutathione peroxidase (GPx) activity and glutathione (GSH) levels were found increased in liver of PC- compared to LP-carrageenan-injected mice. Our findings demonstrated on one hand higher preventive effects of PC compared to LP in a mouse carrageenan-induced inflammatory model and suggested, on the other hand, that anti-inflammatory effects elicited by the two lichens were closely associated with the amelioration in the endogenous antioxidant status of liver.

3D modelling of thallus topography of Lobaria pulmonaria facilitates understanding of water storage pools

2019 ◽  
Vol 51 (1) ◽  
pp. 89-95 ◽  
Author(s):  
Nathan H. PHINNEY
Keyword(s):  
Photosynthetic Activity ◽  
Water Storage ◽  
3D Modelling ◽  
Three Dimensions ◽  
Strongly Correlated ◽  
Lobaria Pulmonaria ◽  
External Water ◽  
Water Holding ◽  
Storage Pools ◽  
Foliose Lichen

AbstractLobaria pulmonaria is a widespread epiphytic foliose lichen that exhibits a prominent reticulum, a structure that has a presumed role in mechanical support and water capture. Using photogrammetry, thallus topography was digitally modelled in three dimensions to calculate 3D surface area (A3D), which was consistently greater than areas extracted from projected images (A2D). The A3D:A2D ratio, a proxy for topographic three-dimensionality, was strongly correlated with both specific thallus mass (STM) and external water-holding capacity (WHCexternal), suggesting that the reticulum in L. pulmonaria extends hydration, photosynthetic activity and growth, following rainfall. Three-dimensionality was more pronounced in larger thalli, which is likely beneficial to liquid water-dependent internal cephalodia that occur more in older thalli and most often within the fovea.

scholarly journals The study of lichens in the state natural reserve «Zavolzhsky» (Chuvash Republic)

2018 ◽  
Vol 7 (4) ◽  
pp. 108-115
Author(s):  
Evgeny Arkadyevich Sinichkin ◽  
Gennady Alekseevich Bogdanov ◽  
Alexander Veniaminovich Dimitriev ◽  
Nadezhda Vladimirovna Smirnova ◽  
Peter Nickolaevich Omelchenko
Keyword(s):  
The State ◽  
Lichen Species ◽  
Anthropogenic Activity ◽  
Lobaria Pulmonaria ◽  
Red Data Book ◽  
Lichen Diversity ◽  
Natural Reserve ◽  
Rare And Endangered ◽  
Data Book ◽  
Chuvash Republic

The paper provides information about lichens found on the territory of the state natural reserve Zavolzhsky, which is a specially protected natural area of the Chuvash Republic. It was established for the protection of the unique natural landscape, located on the territory of Cheboksary and Cheboksary District, as well as for rare and endangered animals, plants and other organisms from high anthropogenic activity. As a result of lichen investigations (2011-2016) 134 species belong to 59 genera from 31 families of lichen flora were recorded. It emphasizes a high environmental significance of this territory. The paper shows substrate and biotope confinement for each lichen species. The investigations were conducted in detail-route method using a GPS-navigator. In the paper the locations of rare lichen species are given according to the new quarterly network of the Cheboksary forestry. We examined the lichen diversity in 14 quarters of 3 forest districts: Pihtulynskoe, Severnoe, Sosnovskoe; lichen collections were carried out in 36 habitats. The habitat of rare and endangered lichen Lobaria pulmonaria was found on the territory of the reserve. This species is included to the Red Data Book of Russia. According to the results of the study we recommend to include 15 rare lichen species to the new edition of Red Data Book of the Chuvash Republic: Arthonia cinereoprunosa , Acrocordia gemmata , Bryoria implexa , Bryoria subcana , Bryoria nadvornikiana , Dimerella pineti , Lobaria pulmonaria , Mycobilimbia epixanthoides , Mycobilimbia carneoalbida , Mycobilimbia tetramera , Platismatia glauca , Usnea dasopoga , Usnea lapponica , Usnea subfloridana , Xanthomendoza ulophyllodes.

Environmental change provokes rapid macromolecular reallocations within the photosynthetic system in a static population of photobionts in the lichen Lobaria pulmonaria

2004 ◽  
Vol 36 (6) ◽  
pp. 425-433 ◽  
Author(s):  
Tyler D. B. MACKENZIE ◽  
Jeanette JOHNSON ◽  
Douglas A. CAMPBELL
Keyword(s):  
Photosystem Ii ◽  
Environmental Change ◽  
Seasonal Changes ◽  
Core Protein ◽  
Temperature Shift ◽  
High Light ◽  
Eastern Canada ◽  
Epiphytic Lichen ◽  
Lobaria Pulmonaria ◽  
Photosynthetic System

Lobaria pulmonaria is an epiphytic lichen that, in south-eastern Canada, inhabits deciduous forests where it must acclimate to large seasonal changes in temperature and in light caused by closing and opening of the leaf canopy. On a seasonal timescale, this acclimation occurs via large shifts in the macromolecular complexes of the photosynthetic system, within a photobiont population that shows no seasonal change in cell numbers. In this study, samples of L. pulmonaria were harvested in February and in May from a natural population near Sackville, New Brunswick, and subjected to two simulated intense seasonal changes: (1) early spring warming, simulated by a shift from high light at 5°C to high light at 16°C (February shift), and (2) late spring canopy closure, simulated by a shift from high light at 16°C to low light at 16°C (May shift). Thallus samples were collected daily throughout each week-long shift. There were no significant changes in photobiont cell population size or in the fraction of cells dividing during either shift. During the first day of the February temperature shift, there were, however, large changes in the pools of chlorophyll, the major light capture molecule in the photobionts, the PsbA (D1) core protein of photosystem II whose turnover is highly responsive to changing light and temperature, and the RbcL major subunit of the carbon-fixing RUBISCO enzyme whose levels correlate strongly with achieved photosynthesis in lichens. A static population of photobionts was therefore able to perform large and rapid macromolecular reallocations to cope with rapid environmental change. No significant changes were seen in the chlorophyll, photosystem II or RUBISCO pools across the May light shift, although seasonal-scale macromolecular reallocation does occur in response to decreased light in the summer.

Dinitrogen Fixation (ARA) in Lobaria Pulmonaria

1991 ◽  
pp. 565-566
Author(s):  
M. A. Monsalve ◽  
F. Bermudez De Castro
Keyword(s):  
Dinitrogen Fixation ◽  
Lobaria Pulmonaria

scholarly journals A Novel b-Orcinol Depsidone of Lichen Lobaria pulmonaria

2014 ◽  
Vol 26 (23) ◽  
pp. 8257-8258
Author(s):  
B. Pejin ◽  
C. Iodice ◽  
B. Stanimirovic ◽  
V. Vajs ◽  
V. Vajs
Keyword(s):  
Lobaria Pulmonaria

Culturing the Lichens Lobaria oregana and L. pulmonaria on Nylon Monofilament

Mycologia ◽  
1988 ◽  
Vol 80 (6) ◽  
pp. 811 ◽  
Author(s):  
William C. Denison
Keyword(s):  
Lobaria Oregana
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