Centro de Bioinnovación

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https://repositorioabierto.uantof.cl/handle/uantof/495
MISIÓN La misión del Centro de bioinnovación está centrada en construirse como un centro de referencia I+D+i, que liderará investigaciones innovadoras, basadas en el uso de microorganismos con aplicaciones biotecnológicas en la industria regional y nacional, y a su vez promoverá el emprendimiento a través de la generación de productos en el área de la bioinnovación. VISIÓN A través del desarrollo, implementación y transferencia de metodologías biotecnológicas innovadoras con base en la utilización de microorganismos como fuentes potenciales de bioproductos. permitirá el desarrollo de actividades económicas basadas en recursos naturales renovables, los cuales permitirán la diversificación de la matriz productiva regional, hasta ahora basada exclusivamente en la minería. https://www.centrodebioinnovacion-ua.com/ https://cdeaua.cl/home/virtual/cbia/

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    Sulfate Nutrition Modulates the Oxidative Response against Short-Term Al3+-Toxicity Stress in Lolium perenne cv. Jumbo Shoot Tissues
    (2024) Hernan Vera Villalobos; Lizzeth Lunario Delgado; Anita S. Gálvez; Domingo Román Silva; Ana Mercado Seguel; Cristián Wulff Zottele
    Al3+-toxicity in acidic soils is among the main abiotic stress factors that generate adverse effects in plant growth; in leaves, it affects several physiological parameters such as photosynthesis and ROS balance, leading to limited crop production. On the other hand, sulfur is a macronutrient that has a key role against oxidative stress and improves plant growth in acidic soils; however, the implication of sulfate nutritional status in the modulation of short-term Al3+-toxicity tolerance mechanisms in plant leaves are barely reported. This study is focused on the role of sulfate on the leaf response of an Al3-sensitive perennial ryegrass (Lolium perenne cv. Jumbo) after 48 h of exposure. Lolium perenne cv. Jumbo seeds were cultivated in hydroponic conditions with modified Taylor Foy solutions supplemented with 120, 240, and 360 μM sulfate in the presence or absence of Al3+-toxicity. The L. perenne cv. Jumbo leaves were collected after 48 h of Al3+-toxicity exposure and processed to evaluate the effects of sulfate on Al3+ toxicity, measuring total proteins, mineral uptake, photosynthesis modulation, and ROS defense mechanism activation. The plants exposed to Al3+-toxicity and cultivated with a 240 μM sulfate amendment showed a recovery of total proteins and Ca2+ and Mg2+ concentration levels and a reduction in TBARS, along with no changes in the chlorophyll A/B ratio, gene expression of proteins related to photosynthesis (Rubisco, ChlAbp, and Fered), or ROS defense mechanism (SOD, APX, GR, and CAT) as compared with their respective controls and the other sulfate conditions (120 and 360 μM). The present study demonstrates that adequate sulfate amendments have a key role in regulating the physiological response against the stress caused by Al3+ toxicity.