Potassium starvation induces oxidative stress in Solanum lycopersicum L. roots

2012 ◽  
Vol 169 (14) ◽  
pp. 1366-1374 ◽  
Author(s):  
M. Hernandez ◽  
N. Fernandez-Garcia ◽  
J. Garcia-Garma ◽  
J.S. Rubio-Asensio ◽  
F. Rubio ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Solanum Lycopersicum ◽  
Solanum Lycopersicum L ◽  
Potassium Starvation

scholarly journals Canavanine Increases the Content of Phenolic Compounds in Tomato (Solanum lycopersicum L.) Roots

Plants ◽  
2020 ◽  
Vol 9 (11) ◽  
pp. 1595
Author(s):  
Pawel Staszek ◽  
Urszula Krasuska ◽  
Magdalena Bederska-Błaszczyk ◽  
Agnieszka Gniazdowska
Keyword(s):  
Oxidative Stress ◽  
Phenolic Compounds ◽  
Solanum Lycopersicum ◽  
Prolonged Treatment ◽  
Enzymatic Antioxidants ◽  
Root Tips ◽  
Polyphenol Oxidases ◽  
Solanum Lycopersicum L ◽  
Genes Encoding ◽  
Total Antioxidant

Canavanine (CAN) is a nonproteinogenic amino acid, and its toxicity comes from its utilization instead of arginine in many cellular processes. As presented in previous experiments, supplementation of tomato (Solanum lycopersicum L.) with CAN led to decreased nitric oxide (NO) level and induced secondary oxidative stress. CAN improved total antioxidant capacity in roots, with parallel inhibition of enzymatic antioxidants. The aim of this work was to determine how CAN-dependent limitation of NO emission and reactive oxygen species overproduction impact content, localization, and metabolism of phenolic compounds (PCs) in tomato roots. Tomato seedlings were fed with CAN (10 and 50 µM) for 24 or 72 h. Inhibition of root growth due to CAN supplementation correlated with increased concentration of total PCs; CAN (50 µM) led to the homogeneous accumulation of PCs all over the roots. CAN increased also flavonoids content in root tips. The activity of polyphenol oxidases and phenylalanine ammonia-lyase increased only after prolonged treatment with 50 µM CAN, while expressions of genes encoding these enzymes were modified variously, irrespectively of CAN dosage and duration of the culture. PCs act as the important elements of the cellular antioxidant system under oxidative stress induced by CAN.

Co-contamination of deltamethrin and cadmium induce oxidative stress in tomato plants (Solanum lycopersicum L.)

2021 ◽  
Vol 43 (6) ◽  
Author(s):  
Nabil Touzout ◽  
Hafidha Mehallah ◽  
Radia Moralent ◽  
Saïd Nemmiche ◽  
Mohammed Benkhelifa
Keyword(s):  
Oxidative Stress ◽  
Solanum Lycopersicum ◽  
Tomato Plants ◽  
Solanum Lycopersicum L
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