Effects of exogenous salicylic acid on physiological traits and CBF gene expression in peach floral organs under freezing stress

Authors

  • Binbin Zhang Institute of Horticultural, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory of Horticultural Crop Genetic Improvement, Nanjing 210014
  • Ruijua Ma Institute of Horticultural, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory of Horticultural Crop Genetic Improvement, Nanjing 210014
  • Lei Guo Institute of Horticultural, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory of Horticultural Crop Genetic Improvement, Nanjing 210014
  • Zhizhong Song Institute of Horticultural, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory of Horticultural Crop Genetic Improvement, Nanjing 210014
  • Mingliang Yu Institute of Horticultural, Jiangsu Academy of Agricultural Sciences/Jiangsu Key Laboratory of Horticultural Crop Genetic Improvement, Nanjing 210014

Keywords:

peach, floral organ, salicylic acid, freezing stress, physiological trait, CBF

Abstract

To elucidate the effects of exogenous salicylic acid (SA) treatment on the cold resistance of peach flower, the floral organs of two peach cultivars were treated with 20 mg/L SA and stored at 0°C for observation and sample collection. Water application was the control. After a treatment period, the anther relative water content of the control and SA-treated flowers decreased. The extent of the reduction was greater in the control, suggesting that the SA treatment significantly helped to maintain the anther water content of peach. Analysis of the stigma relative electric conductivity revealed that the SA treatment prevented membrane injury during the low temperature treatment. Additionally, we measured CBF gene expression at low temperature in the petal, stigma and ovary. The expression was markedly upregulated in the cold-treated floral organs. CBF gene expression after SA treatment was higher than in the control when cold conditions continued. These results suggest that the effects of SA on ameliorating the freezing injury to peach floral organs and on enhancing cold tolerance may be associated with the induction of CBF gene.

https://doi.org/10.2298/ABS160816002Z

Received: August 16, 2016; Revised: November 9, 2016; Accepted: December 14, 2016; Published online: January 13, 2017

How to cite this article: Zhang B, Ma R, Guo L, Song Z, Yu M. Effects of exogenous salicylic acid on physiological traits and CBF gene expression in peach floral organs under freezing stress. Arch Biol Sci. 2017;69(4):585-92.

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Published

2017-10-18

How to Cite

1.
Zhang B, Ma R, Guo L, Song Z, Yu M. Effects of exogenous salicylic acid on physiological traits and CBF gene expression in peach floral organs under freezing stress. Arch Biol Sci [Internet]. 2017Oct.18 [cited 2022Jul.5];69(4):585-92. Available from: https://www.serbiosoc.org.rs/arch/index.php/abs/article/view/907

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