NDLI: Chilling tolerance in Nicotiana tabacum induced by seed priming with putrescine

Content Provider	Springer Nature Link
Author	Xu, Shengchun Hu, Jin Li, Yongping Ma, Wenguang Zheng, Yunye Zhu, Shuijin
Copyright Year	2010
Abstract	Chilling stress is one of primary constraints to tobacco production in many parts of the world. The present study was conducted to induce chilling tolerance in tobacco by seed priming with putrescine (Put) in relation to physiological changes, using seeds from two tobacco varieties, MSk326 (chilling sensitive variety) and Honghuadajinyuan (HHDJY, chilling tolerant variety). Seed germination, seedling antioxidant enzyme activities and malondialdehyde (MDA) concentration, as well as polyamine concentration were determined under low temperature. During chilling stress at 11°C, seed priming with 0.01 mM Put for 48 h (Put0.01mM48 h) and seed priming with 0.1 mM Put for 48 h (Put0.1mM48 h) significantly increased germination percentage, germination index, seedling length and dry weight of both varieties compared to the controls without Put treatment. When seedlings of 4-leaf stage suffered a short chilling stress (5°C), Put 0.1 mM 48 h improved the activities of antioxidant enzymes including superoxide dismutase (SOD), peroxidase (POD), catalase (CAT) and ascorbate peroxidase (APX), increased endogenous Put, Spd and Spm concentration and decreased the MDA concentration. The results showed that Put priming treatments were available to enhance the chilling tolerance of tobacco seedlings. The optimal treatment of Put was Put0.1 mM48 h.
Starting Page	279
Ending Page	290
Page Count	12
File Format	PDF
ISSN	01676903
Journal	Plant Growth Regulation
Volume Number	63
Issue Number	3
e-ISSN	15735087
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-09-28
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Antioxidant enzymes Chilling Nicotiana tabacum L. Polyamine Seedling growth Seed priming Plant Anatomy/Development Agriculture Plant Sciences Plant Physiology
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science Agronomy and Crop Science

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