Overexpression of α-Tubulin Gene of Sugarcane (Saccharum spp. hybrids), SoTUA, Enhances Tobacco Tolerance to Cold Stress

Low temperature stress affects the yield and quality of crops. To adapt to abiotic stress, plant tubulin families play a crucial role to increase cell cold stability. In the present study, our aim was to develop transgenic tobacco by using a cold-responsive SoTUA gene isolated from Saccharum spp. hy...

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Bibliographic Details
Published in:Sugar tech : an international journal of sugar crops & related industries 2022-12, Vol.24 (6), p.1680-1688
Main Authors: Chen, Jiao-Yun, Sun, Bo, Khan, Qaisar, Yang, Li-Tao, Zhang, Bao-Qing, Xing, Yong-Xiu, Li, Yang-Rui
Format: Article
Language:English
Subjects:
Agriculture
Biomedical and Life Sciences
Catalase
Cold tolerance
Fluorescence
Gene expression
Hybrids
Life Sciences
Low temperature
Peroxidase
Polymerase chain reaction
Proteins
Research Article
Saccharum
Stress
Sugarcane
Superoxide dismutase
Temperature tolerance
Tissue analysis
Tobacco
Transgenic plants
Tubulin
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Summary:Low temperature stress affects the yield and quality of crops. To adapt to abiotic stress, plant tubulin families play a crucial role to increase cell cold stability. In the present study, our aim was to develop transgenic tobacco by using a cold-responsive SoTUA gene isolated from Saccharum spp. hybrid. Based on fluorescent microscope observation and TUA gene expression analysis in different tissues, TUA gene expression was found mainly in veins. Moreover, a significant increase of TUA transcripts and protein under cold stress was detected by quantificational real-time polymerase chain reaction (qRT-PCR) and western blot in the transgenic plants. Results of peroxidase (POD), superoxide dismutase (SOD) and catalase (CAT) activities, and proline, soluble sugar and protein contents indicated oxidative damage is less than wild type (WT). Overexpression of SoTUA gene has improved the cold stress tolerance ability in tobacco.
ISSN:0972-1525
0974-0740
DOI:10.1007/s12355-022-01118-2