196,401 research outputs found
The Pindo: source for territorial development of Palermo (Huila-Colombia)
No full textEl desarrollo territorial es un proceso multidimensional y complejo que requiere la
sinergia de diferentes factores: sociales, culturales, económicos, políticos y sobre todo
productivos; lo que conlleva a un reto en el impulso de estrategias que puedan llegar a dicho
objetivo. Palermo Huila - Colombia, tierra prospera, rica en diferentes recursos naturales y
productivos, tales como: el mármol, el café, la ganadería, la pesca, y la diversidad de cultivos
frutícolas, entre otros. Municipio reconocido en especial por un producto autóctono como lo
es la Palma Pindo, que se da a lo largo de su territorio; producto culturalmente apetecido en
el Departamento puesto que con él se elaboran diferentes artesanías en forma de bolsos,
abanicos, trajes y sombreros que son muy populares en la cultura huilense.
El ejemplo más sobresaliente es el sombrero de pindo el cual se utiliza durante el
‘Festival Folclórico Reinado Nacional del Bambuco Y Muestra Internacional del Folclor’,
como parte del atuendo del bailarín, compañero de las candidatas al certamen dancístico,
también es utilizado en diferentes encuentros culturales; en torno a esta celebración y otras
actividades dentro de las que destaca el uso como prenda autóctona por los campesinos del
territorio, llamando el interés de turistas y locales. Por ende, se evidencia que el municipio al
contar con dicha riqueza natural y con la facilidad de producción de este recurso cultural a
través de sus artesanos, puede desarrollar un crecimiento económico exponencial basado en
la manufactura de los diferentes productos derivados de esta palma. Lo que significa, que al
generar una marca comercial municipal del pindo y sus derivados, (marca comercial en proceso) contribuya a la promoción de la identidad municipal a nivel nacional e internacional; impulsando el desarrollo territorial en los diferentes factores anteriormente mencionados, y fundamentalmente en el desarrollo del conocimiento artesanal y turístico del municipio.Territorial development is a multidimensional and complex process that requires the
synergy of different factors: social, cultural, economic, political and above all productive;
which leads to a challenge in promoting strategies that can reach this objective. Palermo
Huila - Colombia, a prosperous land rich in different natural and productive resources, such
as: marble, coffee, livestock, fishing, and the diversity of fruit crops, among others. Palermo
municipality recognized especially for a very indigenous product such as the Palma Pindo,
which occurs throughout its territory; Culturally desired product in the Department since with
it different handicrafts are made in the form of bags, fans, suits and hats that are very popular
in the Huila culture.
The most outstanding example is the pindo hat which is used during ‘Festival Folclórico
Reinado Nacional del Bambuco Y Muestra Internacional del Folclor’as part of the attire of
the dancer, partner of the candidates of the dance contest, it is also used in the different
cultural encounters; around this celebration and other activities within which the use as an
indigenous garment by the peasants of the territory stands out, attracting the interest of
tourists and locals. Therefore, it is evident that the municipality, by having such natural
wealth and the ease of production of this cultural resource through its artisans, can develop
exponential economic growth based on the manufacture of different products derived from
this palm. Which means, that by generating a commercial brand of the pineapple and its
derivatives, (commercial brand in process) contributes to the promotion of the municipal
identity at a national and international level; promoting territorial development in the
different factors mentioned above, and fundamentally in the development of artisanal and
tourist knowledge of the municipality.Introducción
1. Descripción y localización municipal
2. La historia del Pindo
3.De la hoja al sombrero (producción
artesanal del pindo
4. Narrativas de vida: La experiencia
a partir del ejercicio artesanal del
Pindo forjando su uso tradicional
artístico, cultural y económico.
5. Proyección de la marca comercial
del Pindo como estrategia
promotora del desarrollo
territorial del Municipio Palermo
(Huila - Colombia)
6. ConclusionesPregrad
Multifaceted aspects of synchrony between freshwater prokaryotes and protists
No full textCommunity composition of freshwater prokaryotes and protists varies through time. Few studies contemporarily investigate temporal variation of these freshwater communities for more than one year. We compared the temporal patterns of prokaryotes and protists in three distinct habitats for four years (2014-2017) in Lake Tovel, a cold-water lake. This lake showed a marked temperature increase in 2017 linked to altered precipitation patterns. We investigated if microbial communities reflected this change across habitats and if changes occurred at the same time and to the same extent. Furthermore, we tested the concept of hydrological year emphasising the ecological effect of water renewal on communities for its explanatory power of community changes. Microbe diversity was assessed by Illumina sequencing of the V3–V4 hypervariable region of the 16S rRNA-gene and 18S rRNA-gene, and we applied co-inertia analysis and asymmetric eigenvector maps modelling to infer synchrony and temporal patterns of prokaryotes and protists. When considering community composition, microbes were invariably in synchrony across habitats and indicated a temporal gradient linked to decreasing precipitation; however when looking at temporal patterns, the extent of synchrony was reduced. Small-scale patterns were similar across habitats and microbes and linked to seasonally varying environmental variables, while large-scale patterns were different and partially linked to an ecosystem change as indicated by increasing water transparency and temperature and decreasing dissolved oxygen. Our advanced statistical approach outlined the multifaceted aspect of synchrony when linked to community composition and temporal patterns
Unraveling the diversity of eukaryotic microplankton in a large and deep perialpine lake using a high throughput sequencing approach
No full textThe structure of microbial communities, microalgae, heterotrophic protozoa and fungi contributes to characterize food webs and productivity and, from an anthropogenic point of view, the qualitative characteristics of water bodies. Traditionally, in freshwater environments many investigations have been directed to the study of pelagic microalgae (“phytoplankton”) and periphyton (i.e., photosynthetic and mixotrophic protists) through the use of light microscopy (LM). While the number of studies on bacterioplankton communities have shown a substantial increase after the advent of high-throughput sequencing (HTS) approaches, the study of the composition, structure, and spatio-temporal patterns of microbial eukaryotes in freshwater environments was much less widespread. Moreover, the understanding of the correspondence between the relative phytoplankton abundances estimated by HTS and LM is still incomplete. Taking into account these limitations, this study examined the biodiversity and seasonality of the community of eukaryotic microplankton in the epilimnetic layer of a large and deep perialpine lake (Lake Garda) using HTS. The analyses were carried out at monthly frequency during 2014 and 2015. The results highlighted the existence of a rich and well diversified community and the presence of numerous phytoplankton taxa that were never identified by LM in previous investigations. Furthermore, the relative abundances of phytoplankton estimated by HTS and LM showed a significant relationship at different taxonomic ranks. In the 2 years of investigation, the temporal development of the whole micro-eukaryotic community showed a clear non-random and comparable distribution pattern, with the main taxonomic groups coherently distributed in the individual seasons. In perspective, the results obtained in this study highlight the importance of HTS approaches in assessing biodiversity and the relative importance of the main protist groups along environmental gradients, including those caused by anthropogenic impacts (e.g., eutrophication and climate change
Do inferences about freshwater phytoplankton communities change when based on microscopy or high‐throughput sequencing data?
No full text1. Microscopy and high-throughput sequencing (HTS) detect and quantify algae differently. Little is known if microscopy-based abundance or biomass better compare to HTS data and how methodological differences affect ecological inferences about the phytoplankton communities studied.
2. We investigated methodological (abundancemicroscopy versus abundanceHTS, biomassmicroscopy versus abundanceHTS), habitat (littoral, pelagic, deep hypolimnion), and year differences (2014 versus 2017) for phytoplankton communities of Lake Tovel (Italy) using ANOVA. Specifically, we tested the hypothesis that depending on comparing abundancemicroscopy or biomassmicroscopy, respectively, to abundanceHTS different effects would be indicated; we called this the metric effect. Furthermore using samples from 2014 to 2017, we investigated environment-community relationships by a redundancy analysis (RDA) based on abundancemicroscopy, biomassmicroscopy, and abundanceHTS, and compared the results.
3. Approximately nine times more operational taxonomic units (OTUs) were reported with HTS (n2014 = 819, n2017 = 891) than algal taxa with microscopy (n2014 = 90, n2017 = 109) in 2014 and 2017. While microscopically assessed algal taxa were evenly distributed among phyla, the vast majority of OTUs were attributed to Chrysophyta (2014 = 54%, 2017 = 62%) and Bacillariophyta (2014 = 19%, 2017 = 17%). A metric effect for method differences was generally observed comparing abundancemicroscopy to abundanceHTS with Chlorophyta, Cryptophyta, and Dinophyta showing higher % abundance with microscopy while richness and Chrysophyta showed higher values with HTS. Almost no metric effects were found in 2014, but they were common across phyla in 2017. Bacillariophyta and Eustigmatophyta showed the same habitat differences when comparing biomassmicroscopy to abundanceHTS.
Dinophyta showed habitat differences only with microscopy, while Chyrsophyta showed habitat differences only with HTS; these results were probably related to technical bias and strengths of HTS, respectively.
4. Habitat differences of phyla were reasonably related to their ecological niche and linked to factors such as temperature and feeding preferences; furthermore, phyla often showed a significant 2014-versus-2017 year effect. The year 2014 was very wet while 2017 had a dry winter, and we attributed the patterns found to allochthonous nutrient input by rain and decreased turbulence. RDAs based on phytoplankton communities assessed with microscopy and HTS, respectively, equally indicated the importance of hydrology, nutrients, and temperature for phytoplankton communities and discriminated the littoral from the deep hypolimnion. However, variance explained was higher with HTS, and the pelagic was similar to the deep hypolimnion with microscopy but to the littoral with HTS.
5. Despite the different strengths of microscopy and HTS for biodiversity assessment, both datasets outlined similar large-scale patterns linked to strong environmental control of phytoplankton communities as they related to habitat and year differences. According to our hypothesis, metric effects were common; however, no general rule was found if either abundancemicroscopy or biomassmicroscopy, respectively, should be compared to abundanceHTS. Notwithstanding metric effects, HTS-based data provided similar and more detailed information than microscopy, supporting the promise of HTS becoming the tool of the future for biodiversity research
A MITE transposon insertion is associated with differential methylation at the maize flowering time QTL Vgt1
No full textOne of the major quantitative trait loci for flowering time in maize, the Vegetative to generative transition 1 (Vgt1) locus, corresponds to an upstream (70 kb) noncoding regulatory element of ZmRap2.7, a repressor of flowering. At Vgt1, a miniature transposon (MITE) insertion into a conserved noncoding sequence was previously found to be highly associated with early flowering in independent studies. Because cytosine methylation is known to be associated with transposons and to influence gene expression, we aimed to investigate how DNA methylation patterns in wild-type and mutant Vgt1 correlate with ZmRap2.7 expression. The methylation state at Vgt1 was assayed in leaf samples of maize inbred and F1 hybrid samples, and at the syntenic region in sorghum. The Vgt1-linked conserved noncoding sequence was very scarcely methylated both in maize and sorghum. However, in the early maize Vgt1 allele, the region immediately flanking the highly methylated MITE insertion was significantly more methylated and showed features of methylation spreading. Allele-specific expression assays revealed that the presence of the MITE and its heavy methylation appear to be linked to altered ZmRap2.7 transcription. Although not providing proof of causative connection, our results associate transposon-linked differential methylation with allelic state and gene expression at a major flowering time quantitative trait locus in maiz
The composition of apple and pear bark microbiota suggest microbial migrations from soil
No full textThe migration of soil microbial communities possibly define the bark microbiota. The bark microbiota is affected by the bark age and plant specie
Unravelling the composition of apple and pear bark microbiota through a metabarcoding approach
No full textCharacterization of the apple and pear bark microbiota
No full textBark is considered an important overwintering site for pathogenic, beneficial and saprophytic microorganisms and can act as a reservoir of potential plant pathogens and biocontrol agents. However, the majority of the studies regarding plant-associated microbial communities are focused on the phylloplane, fruits and the rhizosphere, while bark is poorly investigated. The aim of this study was to assess the composition of fungal and bacterial communities of pear and apple barks. Results showed that the amount of cultivable colony forming units (CFUs) and the composition of fungal and bacterial communities differed according to bark age and plant species
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