%0 Journal Article
%T Parameters Symptomatic for Boron Toxicity in Leaves of Tomato Plants
%A Luis M. Cervilla
%A Bego a Blasco
%A Juan J. Rios
%A Miguel A. Rosales
%A Eva S¨¢nchez-Rodr¨ªguez
%A Maria M. Rubio-Wilhelmi
%A Luis Romero
%A Juan M. Ruiz
%J Journal of Botany
%D 2012
%I Hindawi Publishing Corporation
%R 10.1155/2012/726206
%X 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 O2£¿£¿ and anthocyanins presented a higher correlation coefficient (>0.9) than did the levels of B in the leaf, followed by other indicators of stress, such as GPX, chlorophyll b and proline (>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.
%U http://www.hindawi.com/journals/jb/2012/726206/