
TY  - JOUR
A1  - Sánchez, Esteban 
A1  - Soto, Juan M. 
A1  - García, Pablo C. 
A1  - López-Lefebre, Luis R. 
A1  - Rivero, Rosa M. 
A1  - Ruiz, Juan M. 
A1  - Romero, Luis 
T1  - Phenolic compounds and oxidative metabolism in green bean plants under nitrogen toxicity.
JF  - Functional Plant Biology
JO  - Functional Plant Biol.
Y1  - 2000
VL  - 27
IS  - 10
SP  - 973
EP  - 978
KW  - green bean, Leguminosae, nitrogen toxicity, oxidative metabolism, Phaseolus vulgaris, phenolic bioactivity.
UR  - https://doi.org/10.1071/PP00008 
N2  - The objective of the present work was to determine the effect of nitrogen toxicity on the metabolism of phenolic compounds and of oxidative stress in Phaseolus vulgaris L. cv. Strike. The nitrogen was applied to the nutrient solution as NH4NO3 at 5.4, 10.8, 16.2, 21.6 and 27 mM. The results indicate that the application of 27 mM N can be defined as toxic, as it drastically depressed growth of the green bean plants in our experiment. In addition, the abiotic stress from the application of this N dosage inhibited the enzymes polyphenol oxidase, peroxidase and cata-lase, and stimulated phenylalanine ammonia-lyase and superoxide dismutase activities. The result was foliar accumulation of phenolic compounds and hydrogen peroxide (H2O2). The accumulation of H2O2 also apparently caused a reduction in biomass production. 
ER  -

