Project description:Functional profiles predicted based on taxonomic affiliations differed from those obtained by GeoChip microarray analysis, which separated community functional capacity based on plant location. The identified metabolic pathways provided insight regarding microbial strategies for colonization and survival in these ecosystems. Sixteen samples analyzed.
Project description:Functional profiles predicted based on taxonomic affiliations differed from those obtained by GeoChip microarray analysis, which separated community functional capacity based on plant location. The identified metabolic pathways provided insight regarding microbial strategies for colonization and survival in these ecosystems.
Project description:This project aims to find the molecular changes driving the cold stress response of freshwater amphipods with different overwintering strategies
Project description:Homeothermic vertebrates exposed to low temperature challenge activate multiple central and physiological pathways in order to regain homeostatic balance within the new environmental constrains. Such homeostatic responses include shivering and non-shivering thermogenesis, altered carbohydrate and lipid metabolism and protein catabolism synchronized by neuroendocrine responses. Pending their evolutionary life history, some of these physiological responses were also identified in poikilothermic vertebrates, yet a conception of heat seeking behavior and lack of cold-related metabolic regulation prevails. Using various physiological parameters and hypothalamic transcriptome analysis in the tropical poikilotherm Nile tilapia, we now demonstrate that cold stress in a poikilotherm induce complex central and physiological homeostatic responses. We further show that oxytocin which is a known thermoregulator in homeotherms, actively regulates temperature related homeostasis in poikilotherms. Moreover, we show that pharmacological or genetic blockage of oxytocin signaling affects oxygen-dependent metabolic rate in two cold exposed poikilothermic models. Therefore, our study identifies oxytocin as an adaptive and evolutionarily conserved metabolic regulator and show that poikilotherms brain actively respond to cold temperature stress by regulating metabolic physiology.
Project description:Drought represents a significant stress to microorganisms and is known to reduce microbial activity and organic matter decomposition in Mediterranean ecosystems. However, we lack a detailed understanding of the drought stress response of microbial decomposers. Here we present metatranscriptomic data on the physiological response of in situ microbial communities on plant litter to long-term drought in Californian grass and shrub ecosystems.
2020-05-01 | GSE148618 | GEO
Project description:Microbiota profiles in cold seeps
