| potassium-efflux channels in extensor and flexor cells of the motor organ of samanea saman are not identical. effects of cytosolic calcium. | leaflet movements in the mimosa-family tree samanea saman stem from coordinated volume changes of cells in the leaf motor organs in the adaxial and abaxial motor cells ("flexors" and "extensors"). shrinking, initiated by dissimilar light signals in extensors and in flexors, depends in both cell types on k(+) efflux via depolarization-dependent potassium (k(d)) channels. to compare between flexor and extensor k(d) channels and to test for a possible interaction of these channels with the ca(2+)-m ... | 2000 | 11027738 |
| potassium-efflux channels in extensor and flexor cells of the motor organ of samanea saman are not identical. effects of cytosolic calcium. | leaflet movements in the mimosa-family tree samanea saman stem from coordinated volume changes of cells in the leaf motor organs in the adaxial and abaxial motor cells ("flexors" and "extensors"). shrinking, initiated by dissimilar light signals in extensors and in flexors, depends in both cell types on k(+) efflux via depolarization-dependent potassium (k(d)) channels. to compare between flexor and extensor k(d) channels and to test for a possible interaction of these channels with the ca(2+)-m ... | 2001 | 11161068 |
| plasma membrane aquaporins in the motor cells of samanea saman: diurnal and circadian regulation. | leaf-moving organs, remarkable for the rhythmic volume changes of their motor cells, served as a model system in which to study the regulation of membrane water fluxes. two plasma membrane intrinsic protein homolog genes, ssaqp1 and ssaqp2, were cloned from these organs and characterized as aquaporins in xenopus laevis oocytes. osmotic water permeability (p(f)) was 10 times higher in ssaqp2-expressing oocytes than in ssaqp1-expressing oocytes. ssaqp1 was found to be glycerol permeable, and ssaqp ... | 2002 | 11910017 |
| foraging ecology of howler monkeys in a cacao (theobroma cacao) plantation in comalcalco, mexico. | recent evidence indicates that primate populations may persist in neotropical fragmented landscapes by using arboreal agroecosystems, which may provide temporary habitats, increased areas of vegetation, and connectivity, among other benefits. however, limited data are available on how primates are able to sustain themselves in such manmade habitats. we report the results of a 9-month-long investigation of the feeding ecology of a troop of howler monkeys (n = 24) that have lived for the past 25 y ... | 2006 | 16429417 |
| aquaporins and plant leaf movements. | background: plant leaf movements can be mediated by specialized motor organs, the pulvini, or can be epinastic (i.e. based on different growth velocities of the adaxial and abaxial halves of the leaf). both processes are associated with diurnally regulated increases in rates of membrane water transport, which in many cases has been shown to be facilitated by aquaporins. rhythmic leaf movements are known from many plant species, but few papers deal with the involvement of aquaporins in such movem ... | 2008 | 18024416 |
| amycolatopsis samaneae sp. nov., isolated from roots of samanea saman (jacq.) merr. | a novel actinomycete, designated strain rm287(t), was isolated from surface-sterilized roots of samanea saman (jacq.) merr., collected from bangkok, thailand. the status of the novel strain was determined using a polyphasic taxonomic approach. phylogenetic analyses based on 16s rrna gene sequences showed that the organism formed a distinct phyletic line within the radiation of the genus amycolatopsis. the 16s rrna gene sequence similarity indicated that strain rm287(t) was most closely related t ... | 2011 | 20511469 |
| assessment of phytochemical content, polyphenolic composition, antioxidant and antibacterial activities of leguminosae medicinal plants in peninsular malaysia. | many medicinal plants from leguminosae family can be found easily in malaysia. these plants have been used as traditional medicines by local ethnic groups, where they are prepared as decoction, pastes for wound infections, and some have been eaten as salad. this paper focused on the assessment of antioxidant potential, antibacterial activity and classes of phytochemicals of nine plants from the leguminosae family. | 2011 | 21306653 |
| permanent genetic resources added to the molecular ecology resources database 1 february 2010-31 march 2010. | this article documents the addition of 228 microsatellite marker loci to the molecular ecology resources database. loci were developed for the following species: anser cygnoides, apodemus flavicollis, athene noctua, cercis canadensis, glis glis, gubernatrix cristata, haliotis tuberculata, helianthus maximiliani, laricobius nigrinus, laricobius rubidus, neoheligmonella granjoni, nephrops norvegicus, oenanthe javanica, paramuricea clavata, pyrrhura orcesi and samanea saman. these loci were cross-t ... | 2010 | 21565086 |
| evaluation of anti-ulcer activity of samanea saman (jacq) merr bark on ethanol and stress induced gastric lesions in albino rats. | to evaluate the antiulcer activity of samanea saman (jacq) merr bark on ethanol and stress induced gastric lesions in albino rats. | 2011 | 22022006 |
| feeding of tropical trees and shrub foliages as a strategy to reduce ruminal methanogenesis: studies conducted in cuba. | the aim of this paper was to present the main results obtained in cuba on the effects of feeding tropical trees and shrubs on rumen methanogenesis in animals fed with low quality fibrous diets. more than 20 tree and shrub foliages were screened for phytochemicals and analyzed for chemical constituents. from these samples, seven promising plants (samanea saman, albizia lebbeck, tithonia diversifolia, leucaena leucocephala, trichantera gigantea, sapindus saponaria, and morus alba) were evaluated f ... | 2011 | 22205224 |
| potassium flux and leaf movement in samanea saman. i. rhythmic movement. | samanea leaflets usually open in white light and fold together when darkened, but also open and dose with a circadian rhythm during prolonged darkness. leaflet movement results from differential changes in the turgor and shape of motor cells on opposite sides of the pulvinus; extensor cells expand during opening and shrink during closure, while flexor cells shrink during opening and expand during closure but change shape more than size. potassium in both open and closed pulvini is about 0.4 n. f ... | 2015 | 4424264 |
| effect of tannins and saponins in samanea saman on rumen environment, milk yield and milk composition in lactating dairy cows. | the objective of this study was to investigate the effects of tannins and saponins in samanea saman on rumen fermentation, milk yield and milk composition in lactating dairy cows. four multiparous early-lactating dairy cows (holstein-friesian cross-bred, 75%) with an initial body weight (bw) of 405 ± 40 kg and 36 ± 8 day in milk were randomly assigned to receive dietary treatments according to a 4 × 4 latin square design. the four dietary treatments were unsupplemented (control), supplemented wi ... | 2015 | 24814291 |
| the effects of blue and far red light on rhythmic leaflet movements in samanea and albizzia. | the opening of excised samanea saman pulvini is promoted by prolonged blue or far-red irradiation. far-red effects are attributed partially but not completely to lowering of the pfr level. two hours of continuous or pulsed blue light or pulsed far-red light (total dosage = 2.2 x 10(18) quanta per square centimeter in all cases) also phase shifts the rhythm in samanea while two hours of continuous blue light phase shifts the rhythm in the related plant albizzia julibrissin. the same pigments appe ... | 1981 | 16661802 |
| circadian rhythmicity in excised samanea pulvini: i. sucrose-white light interactions. | the rhythmic movement of excised samanea saman pulvini incubated in h(2)o or 50 mm sucrose was monitored during extended periods of white light (cool white fluorescent, 2,000 ft-c), darkness, or alternating white light (16 hr) and darkness (8 hr). in continuous white light, the rhythm damps at an intermediate angle after only one cycle, whether pulvini are incubated in sucrose or h(2)o. the rhythm also damps after the first cycle when darkened pulvini are incubated in h(2)o, but it persists for ... | 1976 | 16659690 |
| 12-hydroxyjasmonic acid glucoside is a coi1-jaz-independent activator of leaf-closing movement in samanea saman. | jasmonates are ubiquitously occurring plant growth regulators with high structural diversity that mediate numerous developmental processes and stress responses. we have recently identified 12-o-β-d-glucopyranosyljasmonic acid as the bioactive metabolite, leaf-closing factor (lcf), which induced nyctinastic leaf closure of samanea saman. we demonstrate that leaf closure of isolated samanea pinnae is induced upon stereospecific recognition of (-)-lcf, but not by its enantiomer, (+)-ent-lcf, and th ... | 2011 | 21228101 |
| temporal and spatial resource use by female three-toed sloths and their young in an agricultural landscape in costa rica. | the information on ecological behavior of wild sloths is very scarce. in this study we determined the home ranges and resources used by three adult female three-toed sloths (bradypus variegatus) and their four young in an agricultural matrix of cacao (theobroma cacao), pasture, riparian forests and living fencerows in costa rica. births occurred during november-december and the young became independent at five to seven months of age. initially, mothers remained fixed in one or a few trees, but e ... | 2011 | 22208090 |