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Salt-Induced Damage is Alleviated by Short-Term Pre-Cold Treatment in Bermudagrass (Cynodon dactylon)

by Jibiao Fan 1,†, Jilei Xu 1,†, Weihong Zhang 1, Maurice Amee 2,3, Dalin Liu 1,* and Liang Chen 2,*
1
College of Animal Science and Technology, Yangzhou University, Yangzhou, Jiangsu 225009, China
2
Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, Chinese Academy of Sciences, Wuhan 430074, China
3
University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, China
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Plants 2019, 8(9), 347; https://doi.org/10.3390/plants8090347
Received: 17 July 2019 / Revised: 28 August 2019 / Accepted: 6 September 2019 / Published: 13 September 2019
(This article belongs to the Section Plant Physiology and Metabolism)
Excess salinity is a major environmental stress that limits growth and development of plants. Improving salt stress tolerance of plants is important in order to enhance land utilization and crop yield. Cold priming has been reported to trigger the protective processes in plants that increase their stress tolerance. Bermudagrass (Cynodon dactylon) is one of the most widely used turfgrass species around the world. However, the effect of cold priming on salt tolerance of bermudagrass is largely unknown. In the present study, wild bermudagrass was pre-treated with 4 °C for 6 h before 150 mM NaCl treatment for one week. The results showed that the cell membrane stability, ion homeostasis and photosynthesis process which are usually negatively affected by salt stress in bermudagrass were alleviated by short-term pre-cold treatment. Additionally, the gene expression profile also corresponded to the change of physiological indexes in bermudagrass. The results suggest that cold priming plays a positive role in improving salt stress tolerance of bermudagrass. View Full-Text
Keywords: salt stress; cold priming; bermudagrass; fluorescence transient; gene expression salt stress; cold priming; bermudagrass; fluorescence transient; gene expression
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MDPI and ACS Style

Fan, J.; Xu, J.; Zhang, W.; Amee, M.; Liu, D.; Chen, L. Salt-Induced Damage is Alleviated by Short-Term Pre-Cold Treatment in Bermudagrass (Cynodon dactylon). Plants 2019, 8, 347.

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