Journal
RUSSIAN JOURNAL OF PLANT PHYSIOLOGY
Volume 58, Issue 6, Pages 965-973Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S1021443711060161
Keywords
angiosperms; seeds; chlorophylls; carotenoids; xanthophylls; lutein; accelerated aging; germination; heat stress
Categories
Funding
- Belarussian Foundation for Basic Research [B09M-074]
- Russian Foundation for Basic Research [11-04-00701a]
Ask authors/readers for more resources
It is found that chlorophylls are not fully destructed during seed ripening and can be detected in appreciable quantities in physiologically mature seeds. The elevated content of residual chlorophylls reduces seed tolerance to abiotic stresses. The seed carotenoids were represented mainly by lutein and, in much smaller quantities, by beta-carotene. Carotenoids were found to accumulate in seeds during accelerated aging and during seed germination at high temperatures. The ratio of carotenoid to chlorophyll content (Car/Chl) is proposed to be a measure of seed tolerance to stress factors. The seeds with elevated Car/Chl ratio were characterized by higher tolerance to stress treatments. It is supposed that the presence of chlorophylls in seeds enhances oxidative stress induced by abiotic stress factors. Carotenoids are considered as antioxidants protecting the seeds against oxidative stress.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available