Nitric oxide and calcium induced physio-biochemical changes in tomato (Solanum lycopersicum) plant under heat stress
Temperatures above the threshold levels limit
many physiological and biochemical processes
required for plant survival. Therefore, the aim of the
present experiment was to determine the individual
and combined effects of sodium nitroprusside (SNP)
and calcium (Ca) on the physiological attributes of
tomato (Solanum lycopersicum) plants under heat
stress (HS) and non-HS conditions. Heat stress
significantly increased the chlorophyll (Chl)
degradation, malondialdehyde (MDA), hydrogen
peroxide (H2O2), proline (Pro) and glycinebetaine
(GB) content, and decreased the photosynthetic
pigment (Chl a and Chl b) and total soluble
carbohydrate (TSC) content and the activities of
Rubisco, carbonic anhydrase (CA), and nitrate
reductase (NR). However, compared to the
individual treatments, the combined application of
SNP and Ca was more effective in subsiding the
damaging effects of HS by reducing the
accumulation of MDA and reactive oxygen species
and by stimulating the biosynthesis of compatible
solutes (Pro and GB), TSC, and photosynthetic
pigments (Chl a and b), and also by enhancing the
activities of Rubisco, CA, NR, superoxide
dismutase, catalase, peroxidase, glutathione
reductase, and ascorbate peroxidase.
Cicer arietinum L. (Bengal gram, chickpea) is one of the major pulse crops and an important part of traditional diets in Asia, Africa, and South America.
Crop management practices and variety are two very important parameters that decides the crop performance.
The cytochrome P450 (CYP450) gene family plays a critical role in plant growth and developmental processes, nutrition, and detoxification of xenobiotics in plants. In the present research, a…