ethanol production. In the aged ground seeds, an interplay between degradation of electron transport processes and degradation of ADH enzyme from aging and hydration damage might explain the decreased ethanol production. Reduced tetrazolium staining in the
functionality of the thylakoid membrane ( Berry and Björkman, 1980 ; Pastenes and Horton, 1996 ). The excessive energy with high PAR under low sink demand also could lead to the damage of PSII reaction-centers and decrease electron transport efficiency and
membranes leads to the reduction of electron transport reactions, altered source sink relations, and reductions in pigments such as chlorophyll a, chlorophyll b, and carotenoids ( Benton and Cobb, 1997 ; Saladin et al., 2003 ; Vinit-Dunand et al., 2002
fluorescence with a modulated fluorometer (PAM 2100, Effeltrich, Germany). Leaves were irradiated by a saturated impulse (0.8 s) after a 30-min darkness adjustment during which the electron transport was considered to be ceased sufficiently in thylakoid
inhibition via electron transport blockage, which reduces maximum potential quantum efficiency of PSII (Fv/Fm). Metamitron was shown to persist for 7 to 10 d in both apple and peach at concentrations of 100 to 500 ppm ( McArtney et al., 2012 ). These
polyamines Plant Sci. 151 59 66 Vicentini, C.B. Mares, D. Tartari, A. Manfrini, M. Forlani, G. 2004 Synthesis of pyrazole derivatives and their evaluations as photosynthetic electron transport inhibitors J. Agr. Food Chem. 52 1897 1906 Yang, Z. Zhong, X. Fan
, especially for perennial grass species exposed to a relatively longer period of stress. Waterlogging stress can block the chloroplast and mitochondrial electron transport chain inside the plant cell and cause decreases in cell energy charge and increases in
optimum level of Mn in the medium treatment there is higher electron transport rates, light reactions, and NADPH turnover for the dark reactions, therefore, increased assimilation of CO 2 . Fig. 2. Mean ( A ) leaflet photosynthesis, ( B ) intercellular CO
by low water status due either to limited assimilable CO 2 , the increase of reactive oxidative species, and/or metabolic changes ( Chaves, 1991 ; Lawlor and Cornic, 2002 ). Photosystem II, I, and the electron transport chain can maintain
mitochondrial electron transport chain. This compensatory response might shift the cellular pools of carbon. Correlation analyses indicated that the correlations of polyamine levels with the organic acid metabolic network were positively correlated in high night