Mg is an essential element for the plant development, which is required in several metabolic processes and reactions, such as photophosphorylation
, carbon dioxide fixation in photosynthesis, protein and chlorophyll synthesis, phloem loading, assimilate partitioning, reactive oxygen species formation and photo-oxidation in leaf tissues (CAKMAK; YAZICI, 2010).
It is well known that PPase can irreversibly hydrolyze one molecule of inorganic pyrophosphate (PPi) that comes from the processes of photophosphorylation
, oxidative phosphorylation, and glycolysis into two inorganic phosphates (Pi).
Reversible inhibition of photophosphorylation
in chloroplasts by nitric oxide.
All three compounds are considered to be phytotoxins, with TEN being the most potent, inhibiting photophosphorylation
and inducing chlorosis.
The role of potassium in plants is that potassium in addition to regulation of stomata in photosynthesis and transpiration such as maintain of plant turgor, photophosphorylation
, activation of enzyme and transportation of photo assimilates.
Sulfite affects the carbon fixation, ribulose biphosphate carboxylase, glycolate oxidase activity, and photophosphorylation
This enzyme is responsible for ATP synthesis by oxidative or photophosphorylation
in membranes of bacteria, mitochondria, and chloroplasts.
From this summary page, I can also see that the functions of a thylakoid membrane are light reaction and photophosphorylation
. But, what about the functions of its parts?
Water stressed leaves of sunflower has low RWC and ATP synthesis was known to limit photosynthesis rate because of the inhibition of photophosphorylation
(Lawlor, 2002; Tezara et al., 1999).