The <scp>HD‐Zip</scp> I transcription factor <scp>MdHB7</scp> ‐like confers tolerance to salinity in transgenic apple ( <scp> Malus domestica </scp> )
In: Physiologia Plantarum, Jg. 172 (2021-01-22), S. 1452-1464
Online
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Zugriff:
Salinity is a major environmental constraint that substantially limits global agricultural productivity. HD-Zip I transcription factors are involved in plant responses to salt stress, but little is known about the HD-Zip I genes in apple (Malus domestica). Here, we characterized the function of an apple HD-Zip I gene (MdHB7-like) and report that its expression is induced by salt stress. To further explore its role in salt stress, we created MdHB7-like overexpressing and RNAi transgenic apple plants. The overexpression of MdHB7-like improved the photosynthetic performance and reduced ROS and Na+ accumulation under salt stress. Plants that overexpressed MdHB7-like also showed increased accumulation of proline and soluble sugars, which may have played an important role in their salt stress tolerance. RNAi suppression of MdHB7-like had the opposite effects. Together, our results demonstrate that MdHB7-like is an important regulator of salt tolerance in apple. Our results provide new insights for future research on the mechanisms by which MdHB7-like promotes salt tolerance and provide a potential target for molecular breeding in apple.
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The <scp>HD‐Zip</scp> I transcription factor <scp>MdHB7</scp> ‐like confers tolerance to salinity in transgenic apple ( <scp> Malus domestica </scp> )
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Autor/in / Beteiligte Person: | Gao, Hanbing ; Zhao, Shuang ; Mao, Ke ; Ma, Fengwang ; Wang, Haibo ; Jia, Xumei |
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Zeitschrift: | Physiologia Plantarum, Jg. 172 (2021-01-22), S. 1452-1464 |
Veröffentlichung: | Wiley, 2021 |
Medientyp: | unknown |
ISSN: | 1399-3054 (print) ; 0031-9317 (print) |
DOI: | 10.1111/ppl.13330 |
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