Interactive effects of triadimefon and salt stress on antioxidative status and ajmalicine accumulation in Catharanthus roseus

2007 ◽  
Vol 30 (3) ◽  
pp. 287-292 ◽  
Author(s):  
Cheruth Abdul Jaleel ◽  
Ragupathi Gopi ◽  
Ashok Kishorekumar ◽  
Paramasivam Manivannan ◽  
Beemarao Sankar ◽  
...  
Keyword(s):  
Salt Stress ◽  
Catharanthus Roseus ◽  
Interactive Effects ◽  
Antioxidative Status

Interactive Effects of Salinity and Elevated CO2 on Ecophysiological Function of Euhalophyte Suaeda salsa

2011 ◽  
Vol 361-363 ◽  
pp. 90-93
Author(s):  
Zhao Xiang Han ◽  
Gui Quan Han ◽  
Zhang Meng ◽  
Chun Xia Lv
Keyword(s):  
Salt Stress ◽  
Osmotic Adjustment ◽  
Soluble Sugar ◽  
Nacl Stress ◽  
Interactive Effects ◽  
Concentration Increase ◽  
Total Soluble Sugar ◽  
Nacl Concentration ◽  
Salinity Levels ◽  
Leaves And Roots

This study was aimed at obtaining detailed information about the interaction of NaCl salinity and elevated atmospheric CO2concentration in the halophyte S.salsa, which was irrigated with five different salinity levels under ambient and elevated (530 ppm) CO2. The results show that total soluble sugar concentration was significantly increased by salt-treatments in both leaves and roots, and that the most progressive sugar increments were observed in leaves and roots of S. salsa under the elevated CO2. The Na+ concentration in the leaves and roots increased with the increased NaCl concentration, the K+ accumulation gradually decreaed by increasing salinity levels in leaves and roots. Proline increased in response to salt stress along with incremental NaCl concentration. The GB concentrations of leaves were significantly raised as NaCl levels increased. Electrolyte leakage increased in the leaves of S. salsa grown under NaCl stress. ψs of leaves and roots decreased as the NaCl concentration increase, and that elevated CO2both had markedly greater effects on ψs of leaves and roots. The osmotic adjustment values ascended with elevated CO2concentration in both leaves and roots.

scholarly journals Studies on germination, seedling vigour, lipid peroxidation and proline metabolism in Catharanthus roseus seedlings under salt stress

2007 ◽  
Vol 73 (2) ◽  
pp. 190-195 ◽  
Author(s):  
C. Abdul Jaleel ◽  
R. Gopi ◽  
B. Sankar ◽  
P. Manivannan ◽  
A. Kishorekumar ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Salt Stress ◽  
Catharanthus Roseus ◽  
Proline Metabolism ◽  
Seedling Vigour

Nitric oxide is involved in the regulation of melatonin-induced antioxidant responses in Catharanthus roseus roots under cadmium stress

Botany ◽  
2019 ◽  
Vol 97 (12) ◽  
pp. 681-690 ◽  
Author(s):  
Masoomeh Nabaei ◽  
Rayhaneh Amooaghaie
Keyword(s):  
Nitric Oxide ◽  
Lipid Peroxidation ◽  
Catharanthus Roseus ◽  
Cadmium Stress ◽  
Interactive Effects ◽  
Protective Effects ◽  
Cd Stress ◽  
No Donor ◽  
Antioxidant Responses ◽  
Downstream Signaling

Nitric oxide (NO) and melatonin are two biostimulant molecules in plants that not only modulate the growth and development of plants but also confer enhanced tolerance to abiotic stresses. Therefore, in this study, the interactive effects of melatonin and nitric oxide (NO) on seedlings of Catharanthus roseus (L.) G. Don was evaluated under both control and conditions of stress due to Cd. Our results show that both melatonin and sodium nitroprusside (SNP, as an NO donor) significantly improved seedling growth, which was associated with the enhanced concentration of photosynthetic pigments in both the control plants and under Cd-stress conditions. Impacts of both melatonin and SNP were more pronounced in the Cd-stressed plants than control seedlings. The Cd stress increased H2O2 and lipid peroxidation levels in roots. Melatonin, as well as SNP, increased endogenous NO concentration in roots. Both melatonin and SNP enhanced the concentration of proline and the activities of antioxidant enzymes (SOD, POD, APX, CAT) and lowered H2O2 and lipid peroxidation levels in roots of C. roseus plants under Cd stress. These melatonin-induced responses in the roots were suppressed by 4-carboxyphenyl-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (cPTIO; a specific scavenger of NO), but inhibition of melatonin biosynthesis by p–chlorophenylalanine, could not reverse the protective effects conferred by NO. These outcomes suggest that NO, as a downstream signaling molecule, is implicated in the melatonin-promoted antioxidant responses in roots of C. roseus plants.

Physiological and ultrastructural responses of Catharanthus roseus cell suspension to salt stress

2013 ◽  
Vol 60 (2) ◽  
pp. 244-249 ◽  
Author(s):  
S. Elkahoui ◽  
Z. Barhoumi ◽  
N. Djébali ◽  
W. Djébali ◽  
W. Chaïbi ◽  
...  
Keyword(s):  
Salt Stress ◽  
Cell Suspension ◽  
Catharanthus Roseus
Sign in / Sign up

Export Citation Format

Share Document