Characterization of salt tolerance and Fusarium wilt resistance of a sweetpotato mutant
| Autor: | Huan Zhang, Qingchang Liu, Yannan Wang, Hong Zhai, Yan Li, Shao-zhen He, Qian Zhang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
0301 basic medicine Agriculture (General) Mutant Fusarium wilt resistance Plant Science Photosynthesis 01 natural sciences Biochemistry S1-972 Superoxide dismutase 03 medical and health sciences chemistry.chemical_compound Food Animals Botany Lignin Proline mutant sweetpotato salt tolerance Ecology biology Inoculation Jasmonic acid food and beverages Fusarium wilt Horticulture 030104 developmental biology chemistry biology.protein Animal Science and Zoology Agronomy and Crop Science 010606 plant biology & botany Food Science |
| Zdroj: | Journal of Integrative Agriculture, Vol 16, Iss 9, Pp 1946-1955 (2017) |
| ISSN: | 2095-3119 |
| Popis: | The variant LM1 was previously obtained using embryogenic cell suspension cultures of sweetpotato variety Lizixiang by gamma-ray induced mutation, and then its characteristics were stably inherited through six clonal generations, thus this mutant was named LM1. In this study, systematic characterization of salt tolerance and Fusarium wilt resistance were performed between Lizixiang and mutant LM1. LM1 exhibited significantly higher salt tolerance compared to Lizixiang. The content of proline and activities of superoxide dismutase (SOD) and photosynthesis were significantly increased, while malonaldehyde (MDA) and H 2 O 2 contents were significantly decreased compared to that of Lizixiang under salt stress. The inoculation test with Fusarium wilt showed that its Fusarium wilt resistance was also improved. The lignin, total phenolic, jasmonic acid (JA) contents and SOD activity were significantly higher, while H 2 O 2 content was significantly lower in LM1 than that in Lizixiang. The expression level of salt stress-responsive and disease resistance-related genes was significantly higher in LM1 than that in Lizixiang under salt and Fusarium wilt stresses, respectively. This result provides a novel and valuable material for improving the salt tolerance and Fusarium wilt resistance of sweetpotato. |
| Databáze: | OpenAIRE |
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