Ariana Bertin

Ariana Bertin
University of Concepción · Departamento de Silvicultura

PhD of biological sciences, cell biology and molecular area

About

12
Publications
3,062
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110
Citations
Citations since 2017
6 Research Items
78 Citations
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Introduction
Ariana Bertin currently works at the Departamento de Silvicultura, University of Concepción. Ariana does research in Cell Biology, Botany and Biotechnology. Their current project is 'Embothrium coccineum (Notro) evaluation for stabilizing recent volcanic deposits. Role of formation early cluster roots in low nutritional limitation (N and P) using contrasting populations'.

Publications

Publications (12)
Article
Full-text available
Southern South American Proteaceae thrive on young volcanic substrates, which are extremely low in plant-available phosphorus (P). Most Proteaceae exhibit a nutrient-acquisition strategy based on the release of carboxylates from specialized roots, named cluster roots (CR). Some Proteaceae colonize young volcanic substrates which has been related to...
Article
Embothrium coccineum produces cluster roots (CR) to acquire sparingly soluble phosphorus (P) from the soil through the exudation of organic compounds. However, the physiological mechanisms involved in carbon drainage through its roots, as well as the gene expression involved in the biosynthesis of carboxylates and P uptake, have not been explored....
Article
Full-text available
The South American temperate forests were subjected to drastic topographic and climatic changes during the Pliocene‐Pleistocene as a consequence of the Andean orogeny and glacial cycles. Such changes are common drivers of genetic structure and adaptation. Embothrium coccineum (Proteaceae) is an emblematic tree of the South American temperate forest...
Preprint
The South American temperate forests have been subjected to drastic past topographic and climatic changes during the Pliocene – Pleistocene linked to Andean orogeny and glacial cycles. These changes are common drivers of genetic structure and adaptation process. Embothrium coccineum , a member of the Proteaceae family and an emblematic tree of the...
Article
Full-text available
AimsEmbothrium coccineum is a pioneer tree that produces cluster roots (CR) induced by phosphorus (P) or nitrogen (N) deficiency, but the role which both N and P play in CR formation for different E. coccineum populations is still unknown. We hypothesized that in E. coccineum, N influences the CR formation response, primarily induced by P limitatio...
Article
Full-text available
Pinus radiata is the most important conifer species for commercial forestry in countries such as Australia, New Zeeland and Chile. Nowadays, SE (somatic embryogenesis) is considered the most promising in vitro method for large scale vegetative propagation of woody plants. The understanding of the molecular basis of SE is in its very beginning and a...
Article
Full-text available
The present work explores in vivo physiological, morphological and chemical features during full hydration, desiccation and rehydration of the filmy fern Hymenophyllum dentatum with two main objectives: 1) to get further insight about the mechanisms underlying its desiccation tolerance, and 2) to understand how this plant manages mechanical stress...
Poster
Full-text available
Embotrium coccineum (Notro), is a shade-intolerant pioneer specie that colonize full light exposed areas, growing in general in high total nutrient soils but with low P availability [1]. As other Proteaceae species, it have a special type of root adaptation called Cluster Roots (CRs), which exudes organic compounds that improve nutrient acquisition...
Article
The formation of the complex osteocytic network relies on the emission of long cellular processes involved in communication, mechanical strain sensing, and bone turnover control. Newly deposited osteocytic processes rapidly become trapped within the calcifying matrix, and, therefore, they must adopt their definitive conformation and contact their t...
Article
Full-text available
Osteogenesis is the fundamental process by which bones are formed, maintained and regenerated. The osteoblasts deposit the bone mineralized matrix by secreting large amounts of extracellular proteins and by allowing the biochemical conditions for the nucleation of hydroxyapatite crystals. Normal bone formation requires a tight control of osteoblast...
Conference Paper
45% of the vertebrate genomes are invaded by repeated sequences (DNA transposons, retroviruses or tandem repeats), which usually are considered as molecular parasites. However, in some instances, the function of mammalian tissue-specific enhancers relies on repeated sequences. Here, we challenge the universality of this view using a new taxonomic g...
Article
Full-text available
Although many regulators of skeletogenesis have been functionally characterized, one current challenge is to integrate this information into regulatory networks. Here, we discuss how the canonical Wnt and Smad-dependent BMP pathways interact together and play antagonistic or cooperative roles at different steps of osteogenesis, in the context of th...

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Projects

Projects (2)
Project
To understand, using a System Biology approach, the adaptive capacity of Embothrium coccineum populations to climatic changes to contribute to both plant production and ecological restoration plans.
Project
In our country, volcanic activity produces deposits that cause changes in the soil, affecting vegetation and agronomic activity. They are characterized by high levels of total phosphorus (P) but low bioavailability and varying levels of Nitrogen (N). There are native species that present the ability to colonize and develop in these soils, such as Embothrium coccineum (Notro), which presents a root adaptation called cluster roots, which are formed mainly under nutrient limitation, being still controversial the role of limitation and / or co-limitation of P and N, as well as the molecular mechanisms involved in this process, and whether the differential response to nutritional limitation is given by genetic and / or epigenetic variations. In this project we hope to determine the populations of Notro that present a better development and plasticity to different nutritional conditions. The results generated from this study could help us evaluate the vulnerability and / or adaptability of this group in disturbed soils, and thus contribute to ecological restoration programs in degraded areas