Search results for "ROOTS"

Analytical model for the long- distance tracer-transport in plants

2011

International audience; Recent investigations of long-distance transport in plants using non-invasive tracer techniques such as C radiolabeling monitored by positron emission tomography (PET) combined with magnetic resonance imaging (MRI) revealed the need of dedicated methods to allow a quantitative data analysis and comparison of such experiments. A mechanistic compartmental tracer transport model is presented, defined by a linear system of partial differential equations (PDEs). This model simplifies the complexity of axial transport and lateral exchanges in the transport pathways of plants (e.g. the phloem) by simulating transport and reversible exchange within three compartments using j…

Entextualization and resemiotization as resources for identification in social media

2014

Drawing on insights provided by linguistic anthropology, the study of multisemioticity and research in computer-mediated discourse (CMD), this chapter discusses how entextualization (Bauman & Briggs, 1990; Silverstein & Urban, 1996; Blommaert, 2005, pp. 46–8) and resemiotization (Iedema, 2003; Scollon & Scollon, 2004, pp. 101–3; Scollon, 2008) are key resources for identity work in social media. Three key arguments inspire and give direction to our discussion, each of them laying down touchstones for language scholars who wish to investigate identity in social media. First, for many individuals and social or cultural groups, social media are increasingly significant grassroots arenas for in…

Root hydraulic conductivity in three self-rooted and grafted table grape cultivars

2012

<p style="text-align: justify;"><strong>Aim</strong>: Root hydraulic conductivity is one of the main factors that control water flow in the soil-plant system and ultimately affect crop irrigation requirements. This work sets out to estimate root water conductivity for three self-rooted or grafted table grape cultivars.</p><p style="text-align: justify;"><strong>Methods and results</strong>: We evaluated root water conductivity of the cultivars ‘Black Magic’, ‘Matilde’ and ‘Victoria’ grafted onto 1103 Paulsen rootstock or self-rooted. Measurements were performed on two-year-old table grapes grown in pots filled with pumice. Root water conductivity wa…

Molecular methods to evaluate AMF functionality in soil and in roots

2005

International audience

ILS3 highlighted nice results and challenging opportunities for innovative research on grain legume. Legume Perspective

2020

Carbon stocks in a 50‑year‑oldEucalyptus camaldulensisstand in Sicily, Italy

2015

Eucalyptus stands in semi-arid areas may contribute to enhance carbon (C) stocks in both biomass and soil. However, the limited information available is mainly focused on short-rotation plantations. In this study, the above- and below-ground C pools in five 50-year-old Eucalyptus camaldulensis Dehnh. stands planted on Miocenic evaporitic deposits in Sicily, Italy, with a xeric and thermic pedoclimate, were measured. Above-ground biomass was determined by partitioning and weighing branches, stem and leaves. Below-ground C pools included the determination of litter, root biomass, and soil organic and inorganic C. In terms of the above-ground biomass, the E. camaldulensis stand accumulated on …

Is it possible to understand a book missing a quarter of the letters? Unveiling the belowground species richness of grasslands

2022

Abstract Knowledge of species richness patterns in plant communities is biased toward its hidden belowground part and is derived only from the part visible aboveground. Studies on the relationship of the above- to belowground parts of plant communities suffer from the lack of a consistent and uniform approach to assess their taxonomic composition, particularly in species-rich ecosystems. This study described the proportion between above- and belowground parts of vegetation in three grassland types along with the environmental factors that affect them, using eDNA metabarcoding and an observer survey. The internal transcribed spacer 2 (ITS2) region was used to analyze the total plant richness…

Soil – plant system: a case study of Vitis berlandieri x Vitis rupestris rootstock varieties

2013

Lanthanides are part of rare earth elements. Nowadays studies focused on these elements are increasing to assess the possibility to their use in the traceability to effectively determining the geographical wine origin. In the traceability project we start studying the soil plant system. The aim of the research was to verify if different varieties of rootstock on identical soil have similar lanthanides uptake behavior and if the same rootstock could reproduce different lanthanides distribution for different soil typologies. Three different varieties of rootstock V. berlandieri X V. rupestris (1103 Paulsen, 779 Paulsen and 140 Ruggeri), planted on different soils (carbonatic, clayey and volca…

Expanding Well-Being by Participating in Grassroots Innovations: Using the Capability Approach to Explore the Interest of Alternative Food Networks f…

2022

Abstract Grassroots social innovations are citizen-led initiatives that develop bottom-up solutions to societal challenges. Alternative food networks (AFNs) are innovations which propose alternative schemes for distribution and consumption of food—such as community-based agriculture or food cooperatives—which can improve the well-being of participants. Its potential for social work and social services has been recognised, but remains underexplored. This paper proposes a theoretical framework based on the capability approach in order to explore the impacts, drivers and factors at play in the expansion of well-being in participants in AFNs. This framework is applied to address seven cases of …

Destinazione turistica e networks interni ed esterni: il turismo relazionale

2022

The limitation in the relations between people caused by the pandemic today pushes more and more travellers in search of experiences and interactions with the territories, especially those excluded from the current production processes and the dominant market logic. In this context, the tourism of the roots or return tourism is motivated by a need to rediscover their origins, discover them, or trace them in places related to the history of travellers or their families. We, therefore, describe the main dimensions of the relationship tourism model so that it can be applied to root tourism.