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Different Lifestyles (different + lifestyle)

Distribution by Scientific Domains

Life Sciences	50%

Selected Abstracts

The Arts Of Deception: Verbal Performances By The Ra¯ute Of Nepal

THE JOURNAL OF THE ROYAL ANTHROPOLOGICAL INSTITUTE, Issue 2 2002
Jana Fortier
A small population of Tibeto-Burman-speaking hunter-gatherers, the Ra¯ute avoid intercultural communication with surrounding Nepa¯li-speaking agriculturalists except during barter sessions. During these intercultural interactions, Ra¯ute often charm their trading partners with Nepa¯li verbal art, including recitation of rhymes, songs, and blessings. In this article I suggest that Ra¯ute perform verbal art in order to draw attention away from their radically different lifestyle and as a way of resisting the hegemonic process of Hinduization. The article details Ra¯ute oral performance as a strategy of verbal indirection, focusing on the context and framing of rhyming proverbs as a means of camouflaging Ra¯ute people's actual cultural practices. ba¯darko sa¯pet.o Ra¯uteko dha¯mi la¯i, kheti cha¯ina pa¯ti cha¯ina, ke kha¯nu ha¯mi la¯i? ,The monkey's thigh is the shaman's meat, Having no farmland, what shall we eat?' Gogane Ra¯ute [source]

Fish and molluscan metallothioneins

FEBS JOURNAL, Issue 23 2005
A structural, functional comparison
Metallothioneins (MTs) are noncatalytic peptides involved in storage of essential ions, detoxification of nonessential metals, and scavenging of oxyradicals. They exhibit an unusual primary sequence and unique 3D arrangement. Whereas vertebrate MTs are characterized by the well-known dumbbell shape, with a ,,domain that binds three bivalent metal ions and an ,,domain that binds four ions, molluscan MT structure is still poorly understood. For this reason we compared two MTs from aquatic organisms that differ markedly in primary structure: MT 10 from the invertebrate Mytilus galloprovincialis and MT A from Oncorhyncus mykiss. Both proteins were overexpressed in Escherichia coli as glutathione S -transferase fusion proteins, and the MT moiety was recovered after protease cleavage. The MTs were analyzed by gel electrophoresis and tested for their differential reactivity with alkylating and reducing agents. Although they show an identical cadmium content and a similar metal-binding ability, spectropolarimetric analysis disclosed significant differences in the Cd7 -MT secondary conformation. These structural differences reflect the thermal stability and metal transport of the two proteins. When metal transfer from Cd7 -MT to 4-(2-pyridylazo)resorcinol was measured, the mussel MT was more reactive than the fish protein. This confirms that the differences in the primary sequence of MT 10 give rise to peculiar secondary conformation, which in turn reflects its reactivity and stability. The functional differences between the two MTs are due to specific structural properties and may be related to the different lifestyles of the two organisms. [source]

Isolation of polymorphic microsatellite loci in three phantom midge species of the genus Chaoborus (Diptera: Chaoboridae)

MOLECULAR ECOLOGY RESOURCES, Issue 2 2004
T. U. Berendonk
Abstract Because of its widespread distribution in lakes and ponds Chaoborus is of great interest to many freshwater ecologists. Interestingly some species are restricted to small fish-less water bodies, whereas other species live mostly in large lakes. To eventually test the genetic and evolutionary implications of these different lifestyles we identified microsatellite loci in three species in this preliminary study: C. obscuripes, C. crystallinus and C. flavicans. Using a biotin/streptavidin capture technique of repetitive sequences in a 96 well format, we obtained microsatellite-enriched genomic libraries for all three species and identified six polymorphic microsatellite markers for each species. [source]

Wounding induces resistance to pathogens with different lifestyles in tomato: role of ethylene in cross-protection

PLANT CELL & ENVIRONMENT, Issue 11 2007
DORIANA FRANCIA
ABSTRACT Many reports point to the existence of a network of regulatory signalling occurring in plants during the interaction with micro-organisms (biotic stress) and abiotic stresses such as wounding. However, the focus is on shared intermediates/components and/or common molecular outputs in differently triggered signalling pathways, and not on the degree and modes of effective influence between abiotic and biotic stresses nor the range of true plant,pathogen interactions open to such influence. We report on local and systemic wound-induced protection in tomato (Solanum lycopersicum L.) to four pathogens with a range of lifestyles (Botrytis cinerea, Fusarium oxysporum f.sp. lycopersici, Phytophthora capsici and Pseudomonas syringae pv. tomato). The role of ethylene (ET) in the phenomenon and in the induction by wounding of several markers of defense was investigated by using the never-ripe tomato mutant plants impaired in ET perception. We showed that PINIIb, PR1b, PR5, PR7 and peroxidase (POD) are influenced locally and/or systemically by wounding and, with the exception of POD activity, by ET perception. We also demonstrated that ET, although not essential, is positively (B. cinerea, P. capsici) or negatively (F. oxysporum, P. syringae pv. tomato) involved not only in basal but also in wound-induced resistance to each pathogen. [source]