Proyecto de Investigación: CGL2015-66242-R
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CGL2015-66242-R
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Differential iron management in monocotyledon and dicotyledon plants from the Río Tinto basin.
(Springer Link, 2020-01-06) De la Fuente, V.; Rufo, L.; Ramírez, E.; Sánchez Gavilán, I.; Amils, R.; Rodríguez Rivas, Noé; Ministerio de Economia Industria y Competitividad (MINECO); 0000-0002-2239-6523
The study of plants adapted to an extreme environment with a high concentration of iron such as Río Tinto allowed the study of important elements for the development and control of plant growth including their localization, management, and storage. The absorption, transport, and accumulation of iron were studied in different species of dicotyledons (Sarcocornia pruinosa, Salicornia patula, Arthrocnemum macrostachyum, and Halogeton sativus of the Chenopodiaceae family) and monocotyledons (Imperata cylindrica, Cynodon dactylon, and Panicum repens from the Poaceae family), all obtained from the Río Tinto banks in different sample collection campaigns. The results clearly show that phytoferritin is not observed in the chloroplast of monocotyledons, an important difference from what is observed in dicotyledons. The presence of plastids with a high concentration of iron in the sieve tubes of monocotyledons strongly suggests their possible role in the transport and accumulation of iron in these plants.
Subsurface and surface halophile communities of the chaotropic Salar de Uyuni
(Society for Applied Microbiology, 2021-01-28) Martínez, J. M.; Escudero, C.; Rodíguez, N.; Rubin, S.; Amils, R.; Ministerio de Economía y Competitividad (MINECO); 0000-0003-3954-2985; 0000-0002-3387-7760; 0000-0002-7560-1033; 0000-0003-1240-4144; 0000-0003-4109-4851
Salar de Uyuni (SdU) is the biggest athalosaline environment on Earth, holding a high percentage of the known world Li reserves. Due to its hypersalinity, temperature and humidity fluctuations, high exposure to UV radiation, and its elevated concentration of chaotropic agents like MgCl2, LiCl and NaBr, SdU is considered a polyextreme environment. Here, we report the prokaryotic abundance and diversity of 46 samples obtained in different seasons and geographical areas. The identified bacterial community was found to be more heterogeneous than the archaeal community, with both communities varying geographically. A seasonal difference has been detected for archaea. Salinibacter, Halonotius and Halorubrum were the most abundant genera in Salar de Uyuni. Different unclassified archaea were also detected. In addition, the diversity of two subsurface samples obtained at 20 and 80 m depth was evaluated and compared with the surface data, generating an evolutionary record of a multilayer hypersaline ecosystem.
