Transcriptional Expression of the <i>StSnRK2</i> Gene Family in Response to Osmotic Stress and Correlation Analysis Between Physiological Traits

BAI Jiang-Ping; HU Kai-Ming; GAO Hui-Juan; WANG Xiao-Bin; YANG Hong-Yu; YU Bin; ZHANG Jun-Lian; WANG Di

doi:10.11913/PSJ.2095-0837.2016.40602

Plant Science Journal > 2016 > 34(4): 602-613. > DOI: 10.11913/PSJ.2095-0837.2016.40602 CSTR: 32231.14.PSJ.2095-0837.2016.40602

BAI Jiang-Ping, HU Kai-Ming, GAO Hui-Juan, WANG Xiao-Bin, YANG Hong-Yu, YU Bin, ZHANG Jun-Lian, WANG Di. Transcriptional Expression of the StSnRK2 Gene Family in Response to Osmotic Stress and Correlation Analysis Between Physiological Traits[J]. Plant Science Journal, 2016, 34(4): 602-613. DOI: 10.11913/PSJ.2095-0837.2016.40602

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Transcriptional Expression of the StSnRK2 Gene Family in Response to Osmotic Stress and Correlation Analysis Between Physiological Traits

1. Gansu Key Lab of Crop Improvement & Germplasm Enhancement, Gansu Provincial Key Lab of Aridland Crop Science, Lanzhou 730070, China;
2. College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China;
3. College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China

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This work was supported by grants from the Ministry of Science and Technology of the International Science and Technology Cooperation Projects(2014DFG31570), National Natural Science Foundation of China(31460369), Light of the West of the Chinese Academy of Sciences, Gansu Science and Technology Fund(1308RJZA131, 1308RJIA005), and Lanzhou Scientific and Technological Research Projects(2013-4-156).

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Received Date: March 16, 2016
Revised Date: March 30, 2016
Available Online: October 31, 2022
Published Date: August 27, 2016

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Abstract

Abstract

Sucrose non-fermenting-1 related protein kinases 2 (SnRK2) is a family of highly conserved plant protein kinases. They play important roles in abscisic acid-dependent plant development, and are involved in the stress responses of plants to osmotic stress caused by drought and salinity. In the current study, the transcriptional expression of StSnRK2genes from tetraploid potato (Solanum tuberosum L. cv.‘Longshu No.3’) plantlets in response to gradient saline stress (0, 25, 50, 100 and 200 mmol/L NaCl) and gradient water stress (0, 2%, 4%, 6% and 8% PEG) were determined over three continuous observations (two, four, and six weeks, respectively). Results showed that the expression pattern of StSnRK2 varied under salt and drought stresses. The transcripts of StSnRK2.4and StSnRK2.6 increased under saline treatment, whereas StSnRK2.3 increased with PEG treatment. The transcriptional expression of StSnRK2.5 decreased under saline treatment, but increased under PEG treatment. Under saline treatment, the expression of StSnRK2.6 was positively correlated with the activity of CAT and SOD, and negatively correlated with stomatal area. Under PEG treatment, the StSnRK2.6 transcripts were positively correlated with proline content. Results from this study will offer valuable reference for the molecular breeding of stress resistant potato varieties.
- Potato,
- Osmotic stress,
- StSnRK2,
- Transcriptional expression,
- Correlation

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References (39)

References

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Transcriptional Expression of the StSnRK2 Gene Family in Response to Osmotic Stress and Correlation Analysis Between Physiological Traits

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