Search results for "Populus"
showing 3 items of 23 documents
Mercury uptake into poplar leaves
2016
International audience; Tailings dumps require mercury stabilization to prevent air pollution by evaporated mercury, which can be achieved through plant covers. Plants are considered a net sink for atmospheric Hg via incorporation into leaf tissues. However, most studies related to Hg uptake by plants have considered plants exposed to only atmospheric Hg, whereas in the case of tailings dumps, plants are potentially exposed to both soil and atmospheric Hg. The goal of this work is to evaluate the relative contributions of root and atmospheric pathways by growing poplar (Populus trichocarpa X Populus maximowiczii/var Skado) cuttings on either control or polluted substrates and under either n…
Ius facit populum. Sul rapporto tra diritto e popolo nel Medioevo rileggendo Walter Ullmann
2018
In 1961, Walter Ullmann studied the characteristics of Politics and Government in the Middle Ages and he theorized two different models of power and law: the Ascending and Descending Themes of Government. In the same years, Francesco Calasso encouraged a renewal of Legal History and he developed the system of ius commune. Going through the famous theory proposed by Ullmann in Principles of Government and Politics in the Middle Ages, this paper aims at analyzing the concept of power during the period of ius commune and connecting these observations with the Calasso’s lesson.
Regulatory networks underlying mycorrhizal development delineated by genome-wide expression profiling and functional analysis of the transcription fa…
2017
Background: Ectomycorrhizal (ECM) fungi develop a mutualistic symbiotic interaction with the roots of their host plants. During this process, they undergo a series of developmental transitions from the running hyphae in the rhizosphere to the coenocytic hyphae forming finger-like structures within the root apoplastic space. These transitions, which involve profound, symbiosis-associated metabolic changes, also entail a substantial transcriptome reprogramming with coordinated waves of differentially expressed genes. To date, little is known about the key transcriptional regulators driving these changes, and the aim of the present study was to delineate and functionally characterize the trans…