Influence of Methyl Jasmonate on Inducing Chilling Tolerance in Pomegranate Fruits (Malas Save)

2007 ◽  
Vol 10 (4) ◽  
pp. 612-616 ◽  
Author(s):  
Rahim Zolfaghari ◽  
Javad Hadian
2018 ◽  
Vol 66 (12) ◽  
pp. 3110-3117 ◽  
Author(s):  
Dedong Min ◽  
Fujun Li ◽  
Xinhua Zhang ◽  
Xixi Cui ◽  
Pan Shu ◽  
...  

2016 ◽  
Vol 141 (2) ◽  
pp. 139-145 ◽  
Author(s):  
Xinhua Zhang ◽  
Fujun Li ◽  
Nana Ji ◽  
Shujun Shao ◽  
Dongyang Wang ◽  
...  

The physiological role of arginase in nitrogen remobilization processes from protein degradation during seed germination has well been described in several species. However, very little is known about its possible roles in plant stress responses. Treatment of tomato fruit (Solanum lycopersicum L.) with 0.05 mm methyl jasmonate (MeJA) enhanced transcription levels of arginase genes, especially LeARG2. Chilling injury (CI) of fruit treated with 0.05 mm MeJA for 12 hours was also effectively alleviated, as manifested by decreases in CI index, electrolyte leakage, and malondialdehyde (MDA) content. To investigate the potential role of arginase in MeJA-induced chilling tolerance, fruit were treated with MeJA or the arginase inhibitor Nω-hydroxy-nor-l-arginine (nor-NOHA) combined with MeJA and then stored at 2 °C for 28 days. MeJA-induced arginase activity was strongly inhibited and the reduction of CI by MeJA was nearly abolished by the inhibitor. In addition, MeJA treatment increased the activities of superoxide dismutase (SOD), catalase (CAT), and ascorbate peroxidase (APX); inhibited peroxidase (POD) activities; and promoted proline and polyamines accumulation. These effects were partially counteracted by nor-NOHA; putrescine accumulation, however, was unaffected by the inhibitor. Our results indicate that arginase may be involved in MeJA-induced chilling tolerance, possibly by ameliorating the antioxidant enzyme system of fruit and increasing proline levels.


2014 ◽  
Vol 171 (18) ◽  
pp. 1722-1731 ◽  
Author(s):  
Xolani Irvin Siboza ◽  
Isa Bertling ◽  
Alfred Oduor Odindo

Sign in / Sign up

Export Citation Format

Share Document