Arsenic Stress in Plants: An Inside Story - Crop Improvement: New Approaches and Modern Techniques - page 383

Table 13.2 Alterations in some vital biochemical processes of the plants exposed to arsenic

Biochemical reaction
altered by arsenic

Steps of the reaction Plant species References

Photosynthesis
Light reaction Decrease in chlorophyll content Alfalfa Porter and Sheridan ( 1981 )

Oat Stoeva and Bineva ( 2003 )

Pteris vittata Singh et al. ( 2006 )

Rice Rahman et al. ( 2007 )

Duck weed Duman et al. ( 2010 )

Decrease in PS II activity
By Decrease in electron flow from thylakoid membrane

Oat Stoeva and Bineva ( 2003 )

Photophosphorylation Replacement of Pi with As in ATP Spinach Avron and Jagendorf ( 1959 )

Pea Watling-Payne and Selwyn ( 1974 )

Dark reaction Decrease the amount of Rubisco large subunit content Rice Ahsan et al. ( 2010 )

AsIII inhibits the light activation of photosynthetic CO 2 fixation Pea Marques and Anderson ( 1986 )

Inhibition of maltose libration from starch by inhibiting amylo-
lytic activity

Wheat Liu et al. ( 2005 )

Substitution of Pi in glucose 1-Po 4 by glucose 1-As(V) Pea Levi and Preiss ( 1978 )

Decrease in glceraldehyde -3-Phosphate dehydrogenase activity Rice Ahsan et al. ( 2010 )

Decrease in seduheptulose-1,7-bisphosphatase, malate dehydro-
genase triose-phosphate isomerase, and a subunit of pyruvate
dehydrogenase

Pteris vittata Bona et al. ( 2010 )

Photorespiration Inactivation of GDP, BCOADC, mt PDC, Pt PDC, OGDC

complex

Arabidopsis Chen et al. ( 2010 )

Activation of alternative photorespiration in chloroplast and
mitochondria

Barley Amaranthus
edulis

Wingler et al. ( 1999 )

Respiration
Glycolysis Decrease in glyceraldehyde -3-phosphate dehydrogenase

activity

Rice Ahsan et al. ( 2010 )