Among nanomaterials, silver nanoparticles (AgNPs) are cost-effective and exhibit unique physicochemical properties that enable them to become the most used agents for the manufacture of various products known as nano-enabled, including those for personal care, drugs, fabrics, sprays, disinfectants, vacuum cleaners, and air conditioners, with a continuous expansion to different sectors. Industrial discharges, the disposal of wastewater treatment effluents, and indirect runoff from the soil are some factors that are increasing the accumulation of AgNPs in aquatic and wetland ecosystems. Herewith, we critically analyze the progress in the research of the uptake and translocation of AgNPs in aquatic and wetland plants and their phytotoxic effect that depends on the concentration, size, distribution, morphological shape, surface characteristics and chemical composition of the nanoparticles, as well as the plant genotypes, among other factors. Due to biological plasticity, the toxicity level of AgNPs may vary among plant species, which may be further affected by the mode of application, time of exposure, and plant conditions (e.g., agronomic management, growth rate, phenological stage, etc.). Therefore, it is possible to identify and select competent plants for phytoremediation purposes, including superior capabilities for phytoextraction, phytofiltration, and phytostabilization. The review also identifies the main gaps that require attention in future research in order to elucidate a more integrative map aimed to reduce the potential threats to the environment and living organisms including humans.

To guarantee sustainable development at a global level, humanity currently faces serious challenges related to a greater demand and better distribution of food to meet the needs of the growing population in environments affected by global climate change (GCC), and in limiting conditions with respect to natural, genetic, financial, and technological resources. Therefore, there is a dire need to implement technologies that can guarantee food security and sovereignty around the world, enabling sustainable development for all nations. Cold-Water Agriculture (ColdAg) is an available technology that offers an alternative to conventional food production in coastal areas and islands of the tropical and subtropical belts worldwide, making use of cold deep ocean water. Mexico has places with the optimal environmental conditions to adapt this technology, mainly in coastal areas and islands, which can contribute to ensuring access to food and drinking water. Initial tests have shown its viability, while production costs need to be adjusted to make this technology accessible to the poorest populations, so that it can contribute to their sustainable development and wealth. In this review article, we aimed to critically analyze some of the most salient literature on the ColdAg technology and outline the feasibility of this technology to be implemented and exploited in Mexico to contribute to alternative food production in a sustainable manner.

Antecedentes: El frijol (Phaseolus vulgaris) es un alimento básico en Sudamérica y el norte de África. El injerto es una estrategia a corto plazo para mejorar la tolerancia al estrés. Hipótesis: El injerto de P. vulgaris unido a P. acutifolius influencia la adaptación al déficit de humedad. Especies de estudio: Plantas de P. vulgaris y P. acutifolius se injertaron para evaluar respuestas fisiológicas y bioquímicas en plantas injertadas en déficit de humedad. Sitio y años de estudio: El experimento se realizó en un invernadero del Colegio de Postgraduados, Campus Montecillo, Texcoco, México (19° 27′ 40″ N, 98° 54′ 19″ O y altitud de 2,353 m). Métodos: Plantas mantenidas en riego hasta llenado del grano (R8) se dividieron en dos grupos: con riego (control) y déficit de humedad hasta madurez fisiológica (R9). Conductancia estomática se usó como indicador de estrés en periodo inicial, seguidos de estudios de proteómica. Los datos se analizaron con ANOVA y pruebaTukey (P ≤ 0.05). Resultados: Plantas injertadas mitigaron el déficit de humedad con incremento de la conductancia estomática (gs) a las 24 h y disminución a 48 h y 72 h después de la suspensión del riego. Se observó reducción en el número de semillas, pero distribución de peso individual estable. El análisis proteómico mostró que GDSL esterasa/lipase presenta asociación con proteínas involucradas con procesos catabólicos, metabolismo de lípidos y de transporte. Conclusión: El estudio provee evidencia del papel de portainjerto (P. acutifolius) en respuesta al déficit de humedad.

El uso creciente de nanopartículas de plata (AgNPs) en productos industriales, médicos y domésticos ha incrementado su liberación al ambiente, especialmente en cuerpos de agua dulce y sistemas de tratamiento de aguas residuales