ORCID Profile
0000-0002-4553-1310
Current Organisation
Universidad de Vigo
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Publisher: Springer Science and Business Media LLC
Date: 21-05-2018
Publisher: Springer Science and Business Media LLC
Date: 12-06-2018
Publisher: American Geophysical Union (AGU)
Date: 10-2019
DOI: 10.1029/2019GB006276
Publisher: Proceedings of the National Academy of Sciences
Date: 29-06-2020
Abstract: Most of the known viruses of amoeba have been seen to share some features that eventually prompted authors to classify them into common evolutionary groups. Here we describe Yaravirus, an entity that could represent either the first isolated virus of Acanthamoeba spp. out of the group of NCLDVs or, in an alternative scenario, a distant and extremely reduced virus of this group. Contrary to what is observed in other isolated viruses of amoeba, Yaravirus does not have a large/giant particle or a complex genome, but at the same time carries a number of previously undescribed genes, including one encoding a ergent major capsid protein. Metagenomic approaches also testified for the rarity of Yaravirus in the environment.
Publisher: American Geophysical Union (AGU)
Date: 03-2022
DOI: 10.1029/2021GB007163
Abstract: Microbes play a critical role in plant litter decomposition and influence the fate of carbon in rivers and riparian zones. When decomposing low‐nutrient plant litter, microbes acquire nitrogen (N) and phosphorus (P) from the environment (i.e., nutrient immobilization), and this process is potentially sensitive to nutrient loading and changing climate. Nonetheless, environmental controls on immobilization are poorly understood because rates are also influenced by plant litter chemistry, which is coupled to the same environmental factors. Here we used a standardized, low‐nutrient organic matter substrate (cotton strips) to quantify nutrient immobilization at 100 paired stream and riparian sites representing 11 biomes worldwide. Immobilization rates varied by three orders of magnitude, were greater in rivers than riparian zones, and were strongly correlated to decomposition rates. In rivers, P immobilization rates were controlled by surface water phosphate concentrations, but N immobilization rates were not related to inorganic N. The N:P of immobilized nutrients was tightly constrained to a molar ratio of 10:1 despite wide variation in surface water N:P. Immobilization rates were temperature‐dependent in riparian zones but not related to temperature in rivers. However, in rivers nutrient supply ultimately controlled whether microbes could achieve the maximum expected decomposition rate at a given temperature. Collectively, we demonstrated that exogenous nutrient supply and immobilization are critical control points for decomposition of organic matter.
Publisher: Wiley
Date: 25-02-2019
DOI: 10.1111/GCB.14537
No related grants have been discovered for Isabel Pardo.