نتایج جستجو برای: leprose lichens

تعداد نتایج: 2231  

2014
Lingyan Zhou Fude Liu Wenjie Yang Hong Liu Hongbo Shao Zhongsheng Wang Shuqing An

Epiphylls widely colonize vascular leaves in moist tropical forests. Understanding the effects of epiphylls on leaf traits of host plants is critical for understanding ecological function of epiphylls. A study was conducted in a rain forest to investigate leaf traits of the host plants Photinia prunifolia colonized with epiphyllous liverworts and foliicolous lichens as well as those of uncoloni...

2016
Kaja Rola Piotr Osyczka Alina Kafel

Lichens appear to be essential and effective colonisers of bare substrates including the extremely contaminated wastes of slag dumps. This study examines the metal accumulation capacity of epilithic lichens growing directly on the surface of artificial slag sinters. Four species representing different growth forms, i.e., crustose Candelariella aurella, Lecanora muralis, and Lecidea fuscoatra an...

Journal: :Zeitschrift fur Naturforschung. C, Journal of biosciences 1999
J Garcia Rowe M D Garcia Gimenez M T Saenz Rodriguez

Antimicrobial activity in some lichens from south Spain has been studied. Some lichenical substances are also identified. The structures of all compounds were elucidated by physical, spectral and chemical methods. A very high activity against Gram-positive bacteria has been observed in lichens containing usnic acid.

Journal: :Journal of bacteriology 2012
Seung Chul Shin Do Hwan Ahn Jong Kyu Lee Su Jin Kim Soon Gyu Hong Eun Hye Kim Hyun Park

The endosymbiotic bacterium Sphingomonas sp. strain PAMC 26605 was isolated from Arctic lichens (Ochrolechia sp.) on the Svalbard Islands. Here we report the draft genome sequence of this strain, which could provide further insights into the symbiotic mechanism of lichens in extreme environments.

Journal: :Applied and environmental microbiology 2011
Alexandra A Mushegian Celeste N Peterson Christopher C M Baker Anne Pringle

Symbioses are unique habitats for bacteria. We surveyed the spatial diversity of bacterial communities across multiple individuals of closely related lichens using terminal restriction fragment length polymorphism (T-RFLP) and pyrosequencing. Centers of lichens house richer, more consistent assemblages than species-poor and compositionally disparate lichen edges, suggesting that ecological succ...

Journal: :Environmental monitoring and assessment 2013
Jens Søndergaard

This study investigated dispersion and bioaccumulation of mining-related elements from an open-pit olivine mine at Seqi in Southwest Greenland (64° N) using lichens (Flavocetraria nivalis), seaweeds (Fucus vesiculosus), mussels (Mytilus edulis) and fish (Myoxocephalus scorpius). The mine operated between 2005 and 2009, and samples were taken every year within a monitoring area 0-17 km from the ...

Journal: :journal of medical microbiology and infectious diseases 0
tahereh valadbeigi ilam universty, ilam, iran ali mohammad bahrami ilam university, ilam, iran minoo shaddel etemadzade av, fatemi st, tehran, iran

introduction: natural products have been the most successful source of potential drug leads. one of them is lichens, which have been used since antiquity as natural sources of drugs. the aim of this study was to investigate the antibacterial and antifungal activity of different extracts of the iranian lichens in ilam province. methods: the aqueous, acetone, and methanol extracts of 6 lichen spe...

Journal: :Annals of botany 2007
Johannes H C Cornelissen Simone I Lang Nadejda A Soudzilovskaia Heinjo J During

BACKGROUND Recent decades have seen a major surge in the study of interspecific variation in functional traits in comparative plant ecology, as a tool to understanding and predicting ecosystem functions and their responses to environmental change. However, this research has been biased almost exclusively towards vascular plants. Very little is known about the role and applicability of functiona...

Journal: :Molecular ecology 2011
Michele D Piercey-Normore Christopher Deduke

Domestication of algae by lichen-forming fungi describes the symbiotic relationship between the photosynthetic (green alga or cyanobacterium; photobiont) and fungal (mycobiont) partnership in lichen associations (Goward 1992). The algal domestication implies that the mycobiont cultivates the alga as a monoculture within its thallus, analogous to a farmer cultivating a food crop. However, the in...

2017
Thomas Kiebacher Christine Keller Christoph Scheidegger Ariel Bergamini

Sylvo-pastoral systems are species-rich man-made landscapes that are currently often severely threatened by abandonment or management intensification. At low tree densities, single trees in these systems represent habitat islands for epiphytic cryptogams. Here, we focused on sycamore maple (Acer pseudoplatanus) wooded pastures in the northern European Alps. We assessed per tree species richness...

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