Research Article Open Access

Antioxidant and Photosynthetic Responses in Plants Under Boron Toxicity: A Review

Lucia Guidi1, Alberto Pardossi1, Elena Degl’Innocenti1 and Marco Landi1
  • 1 Department of Plant Crop Biology, Faculty of Agricultural Science, University of Pisa, Italy

Abstract

Boron (B) is a micronutrient that has long been known essential not only for plants and animals. Otherwise, in crop plants the range of B concentration from essentiality to toxicity appears extremely narrow. Although B deficiency has been well investigated, during recent years many researchers have also investigated boron toxicity effects, making progress in the comprehension of boron transport within plants. Moreover, worldwide B is not uniformed distributed and, especially in arid and semiarid regions, high B concentrations are found in the soil. Boron in plants primarily moves following transpiration stream even though recent evidences have also confirmed the involvement of B transporter and channel (BOR and NIP). In general, the species that tolerate B excess tends to accumulate less B compared to sensitive species. Likewise other abiotic stresses, antioxidants may be involved in the scavenging of Reactive Oxygen Species (ROS) triggered by B toxicity. Photosynthesis parameters in plants grown under high B supply can draw the photosystems situation and the reactions to B toxicity drawing the healthy status of the plants evaluated. Although boron deficiency has been well investigated, during recent years many researchers have also investigated boron toxicity effects, making progress in the comprehension of boron transport within plants. This review represents the actual state of knowledge concerning B toxicity.

American Journal of Agricultural and Biological Sciences
Volume 7 No. 3, 2012, 255-270

DOI: https://doi.org/10.3844/ajabssp.2012.255.270

Submitted On: 28 May 2012 Published On: 5 July 2012

How to Cite: Guidi, L., Pardossi, A., Degl’Innocenti, E. & Landi, M. (2012). Antioxidant and Photosynthetic Responses in Plants Under Boron Toxicity: A Review. American Journal of Agricultural and Biological Sciences, 7(3), 255-270. https://doi.org/10.3844/ajabssp.2012.255.270

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Keywords

  • Reactive Oxygen Species (ROS)
  • Adenosine Triphosphate (ATP)
  • Nicotinamide Adenine Dinucleotide Phosphate (NADPH)
  • Glutathione Reductase (GR)