González-Meler M.A., Matamala R., Peñuelas J. (1997) Effects of prolonged drought stress and nitrogen deficiency on the respiratory O2 uptake of bean and pepper leaves. Photosynthetica. 34: 505-512.EnllaçDoi: 10.1023/A:1006801210502
We analyzed the combined effects of mild drought stress and severe nitrogen (N) deprivation on respiration of acclimated mature leaves of beans (Phaseolus vulgaris L. cv. Garrofal) and peppers (Capsicum annuum L., pure line B6). Rates of oxygen uptake were measured polarographically, and inhibitors were added to the closed cuvette to compare the effects of environmental stress on the cytochrome (cyt) and alternative pathways of mitochondrial respiration. Dark oxygen uptake was decreased by the water deficit treatment in both plants, and in the case of N limitation leaf respiration rates (R(D)) of peppers were also reduced. R(D) of leaves of beans and peppers grown under N-limiting conditions did not follow the decrease, in leaf N concentration, since R(D) expressed per unit of tissue N was considerably higher in the N-stressed leaves. Values obtained with specific inhibitors of the two terminal oxidases of mitochondrial respirations suggested that the cyt pathway of respiration was affected by mild drought and severe N stress. When plants were exposed to both environmental stresses, leaf respiration response was similar to that under N limitation, in this case the most severe stress.
Llusià J, Gimeno BS, Peñuelas J (1997) Biogenic emissions from Mediterranean vegetation. Effects of ozone concentrations. I. Technical Workshop on Tropospheric ozone pollution in Southern Europe. València.
Llusià J, Estiarte M, Peñuelas J (1997) Terpenoids and plant communication. Butlletí de la Institució Catalana d´Història Natural 64:125 133.
Castells E, Peñuelas J (1997) Vers una teoria global de defensa química en plantes. Orsis 12:141-162.
Savé R, Peñuelas J, Marfà O, Montero JI, Smart D, Biel D (1997) El abonado carbónico en los cultivos protegidos. Horto-Información 81:42-45.
Marfà O, Biel C, Peñuelas J, Montero JI, Guri S, Savé R (1997) La fertilización carbónica en cultivos protegidos en clima mediterráneo. Horticultura 118:68-69.
Peñuelas J (1997) Els canvis atmosfèrics com a recursos i moduladors de vida. Treballs de la Societat Catalana de Biologia 46:169-176.
Peñuelas J, Idso B, Ribas A, Kimball BA (1997) Effects of long-term atmospheric CO2 enrichment on the mineral concentration of Citrus aurantium leaves. New Phytologist 135:439-444.
Peñuelas J, Filella I, Gamon JA, Field C (1997) Assessing photosynthetic radiation-use efficiency of emergent aquatic vegetation from spectral reflectance. Aquatic Botany 58:307-315.
Peñuelas J, Isla R, Filella I, Araus JL (1997) Visible and near-infrared reflectance assessment of salinity effects on barley. Crop Science 37:198-202.
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