Parameters Symptomatic for Boron Toxicity in Leaves of Tomato Plants

  • Cervilla L
  • Blasco B
  • Rios J
  • et al.
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Abstract

The incidence of boron (B) toxicity has risen in areas of intensive agriculture close to the Mediterranean sea. The objective of this research was to study the how B toxicity (0.5 and 2 mM B) affects the time course of different indicators of abiotic stress in leaves of two tomato genotypes having different sensitivity to B toxicity (cv. Kosaco and cv. Josefina). Under the treatments of 0.5 and 2 mM B, the tomato plants showed a loss of biomass and foliar area. At the same time, in the leaves of both cultivars, the B concentration increased rapidly from the first day of the experiment. These results were more pronounced in the cv. Josefina, indicating greater sensitivity than in cv. Kosaco with respect to excessive B in the environment. The levels of O 2 • − and anthocyanins presented a higher correlation coefficient ( r > 0.9 ) than did the levels of B in the leaf, followed by other indicators of stress, such as GPX, chlorophyll b and proline ( r > 0.8 ). Our results indicate that these parameters could be used to evaluate the stress level as well as to develop models that could help prevent the damage inflicted by B toxicity in tomato plants.

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Cervilla, L. M., Blasco, B., Rios, J. J., Rosales, M. A., Sánchez-Rodríguez, E., Rubio-Wilhelmi, M. M., … Ruiz, J. M. (2012). Parameters Symptomatic for Boron Toxicity in Leaves of Tomato Plants. Journal of Botany, 2012, 1–17. https://doi.org/10.1155/2012/726206

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