Ascorbic acid metabolism: New knowledge on mitigation of aluminum stress in plants.

Ascorbic acid (ASC) is an important antioxidant in plant cells, being the main biosynthesis pathway is L-galactose or Smirnoff-Wheeler. ASC is involved in plant growth and development processes, being a cofactor and regulator of multiple signaling pathways in response to abiotic stresses. Aluminum toxicity is an important stressor under acidic conditions, affecting plant root elongation, triggering ROS induction and accumulation of hydrogen peroxide (HO).

Effects of Foliar Boron Application on Physiological and Antioxidants Responses in Highbush Blueberry ( L.) Cultivars.

Boron (B) is a micronutrient crucial for the growth, development, productivity, and quality of crops. However, in areas characterized by acid soil (pH < 5.0) and high rainfall, soil B concentration tends to decrease, leading to insufficient supply to crops.

Role of boron and its interaction with other elements in plants.

Boron (B) is an essential microelement for plants, and its deficiency can lead to impaired development and function. Around 50% of arable land in the world is acidic, and low pH in the soil solution decreases availability of several essential mineral elements, including B, magnesium (Mg), calcium (Ca), and potassium (K). Plants take up soil B in the form of boric acid (HBO) in acidic soil or tetrahydroxy borate [B(OH)] at neutral or alkaline pH.

Physiological and molecular effects of TiO nanoparticle application on UV-A radiation stress responses in Solanum lycopersicum L.

Nanoparticles (NPs) of titanium dioxide (TiO) alter photosynthetic and biochemical parameters in Solanum lycopersicum L., possibly due to their photocatalytic properties given by energy absorption in the UV-A range; however, the joint effects TiO NPs and UV-A radiation are not well understood. This work evaluates the combined responses of TiO NPs and UV-A radiation at the physiological and molecular levels in S.