Chlorophyll a fluorescence has allowed inferences on the efficiency of the photochemical phase of photosynthesis and can be useful in studies on the physiological behavior of CAM plants
(Romo-Campos et al., 2013; Cruz et al., 2014; Diez et al., 2017).
usually have a higher efficiency in water use than C3 and C4 plants .
Moreover, in leaves of CAM plants
, the dynamics of carbohydrates is essential.
Pieters A J, Tezara W, Herrera A (2003) Operation of xanthophyll cycle and degradation of D1 protein in the inducible CAM plant
, Talinum triangulare, under water deficit.
On the basis of investigations in CAM plants
, a stoichiometry of [2H.sup.+] transported/ ATP hydrolysed was frequently measured, but values ranged from 1.7-3.3 [H.sup.+]/ATP [4,41].
High photosynthetic capacity in a shade tolerant CAM plant
: implications for sunfleck use, nonphotochemical energy dissipation, and susceptibility to photoinhibition.
Although enhanced water use efficiency is the ultimate selective force in terrestrial CAM plant
evolution, the proximal selective factor is enhanced daytime intercellular [CO.sub.2] partial pressure ([p.sub.i]).
, like [C.sub.4] plants, are adapted to hot temperatures.
Instead of partitioning metabolites in space (between mesophyll and bundle sheath cells), CAM plants
use PEP carboxylase to fix the carbon into malate, which is then stored until the next day, when the carbon is released and refixed in normal Calvin cycle metabolism.
take up carbon dioxide at night and store it as malic acid that is decarboxylated the following day; the carbon dioxide released is then fixed using the [C.sub.3] pathway.
The lowest response to higher CO2 levels is usually from the CAM plants
, which include pineapples, agaves, and many cacti and other succulents.