Optimization of High-Efficiency Tissue Culture Regeneration Systems in Gray Poplar
A series of tissue culture regeneration protocols were conducted on gray poplar (<i>P. tremula × P. alba</i>) to select the most efficient callus induction medium, adventitious shoot differentiation medium, shoot elongation medium and rooting medium, which laid the foundation for the opt...
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MDPI AG
2023-09-01
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| Series: | Life |
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| Online Access: | https://www.mdpi.com/2075-1729/13/9/1896 |
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| author | Huanhuan Li Hang Wang Lianke Guan Zihui Li Hua Wang Jie Luo |
| author_facet | Huanhuan Li Hang Wang Lianke Guan Zihui Li Hua Wang Jie Luo |
| author_sort | Huanhuan Li |
| collection | DOAJ |
| description | A series of tissue culture regeneration protocols were conducted on gray poplar (<i>P. tremula × P. alba</i>) to select the most efficient callus induction medium, adventitious shoot differentiation medium, shoot elongation medium and rooting medium, which laid the foundation for the optimization of genetic transformation technology for gray poplar. The results showed that the Woody Plant Medium (WPM) supplemented with 0.10 mg L<sup>−1</sup> kinetin (KT) and 1.00 mg L<sup>−1</sup> 2,4-dichlorophenoxyacetic acid (2,4-D) was the most suitable medium for callus induction. The callus induction rates of different tissues were greater than 85.7%. The optimal adventitious shoot differentiation medium was the WPM supplemented with 0.02 mg L<sup>−1</sup> thidiazuron (TDZ), and the adventitious shoot differentiation rates of young tissues were 22.2–41.9%. The optimal direct differentiation medium was the Murashige and Skoog (MS) medium supplemented with 0.20 mg L<sup>−1</sup> 6-benzylaminopurine (6-BA), 0.10 mg L<sup>−1</sup> indole butyric acid (IBA) and 0.001 mg L<sup>−1</sup> TDZ, and the differentiation rate of adventitious shoots was greater than 94%. The best shoot elongation medium for adventitious shoots was the MS medium with 0.10 mg L<sup>−1</sup> naphthylacetic acid (NAA). After 45 days of cultivation in the MS medium with 0.10 mg L<sup>−1</sup> NAA, the average plant height was 1.8 cm, and the average number of elongated adventitious shoots was 11 per explant. The 1/2 MS medium with 0.10 mg L<sup>−1</sup> NAA showed the best performance for rooting, and later, shoot growth. The direct shoot induction pathway can induce adventitious shoots much faster than the indirect adventitious shoot induction pathway can, and the time cost via the direct adventitious shoot induction pathway can be shortened by 2–6 weeks compared to that of the indirect shoot induction pathway. |
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| institution | Directory Open Access Journal |
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| language | English |
| last_indexed | 2024-03-10T22:33:10Z |
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| spelling | doaj.art-8ce698a3e5824b44ad211347666c0d832023-11-19T11:37:48ZengMDPI AGLife2075-17292023-09-01139189610.3390/life13091896Optimization of High-Efficiency Tissue Culture Regeneration Systems in Gray PoplarHuanhuan Li0Hang Wang1Lianke Guan2Zihui Li3Hua Wang4Jie Luo5College of Horticulture and Forestry Science, Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan 430070, ChinaCollege of Horticulture and Forestry Science, Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan 430070, ChinaCollege of Horticulture and Forestry Science, Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan 430070, ChinaCollege of Horticulture and Forestry Science, Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan 430070, ChinaCollege of Horticulture and Forestry Science, Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan 430070, ChinaCollege of Horticulture and Forestry Science, Hubei Engineering Technology Research Center for Forestry Information, Huazhong Agricultural University, Wuhan 430070, ChinaA series of tissue culture regeneration protocols were conducted on gray poplar (<i>P. tremula × P. alba</i>) to select the most efficient callus induction medium, adventitious shoot differentiation medium, shoot elongation medium and rooting medium, which laid the foundation for the optimization of genetic transformation technology for gray poplar. The results showed that the Woody Plant Medium (WPM) supplemented with 0.10 mg L<sup>−1</sup> kinetin (KT) and 1.00 mg L<sup>−1</sup> 2,4-dichlorophenoxyacetic acid (2,4-D) was the most suitable medium for callus induction. The callus induction rates of different tissues were greater than 85.7%. The optimal adventitious shoot differentiation medium was the WPM supplemented with 0.02 mg L<sup>−1</sup> thidiazuron (TDZ), and the adventitious shoot differentiation rates of young tissues were 22.2–41.9%. The optimal direct differentiation medium was the Murashige and Skoog (MS) medium supplemented with 0.20 mg L<sup>−1</sup> 6-benzylaminopurine (6-BA), 0.10 mg L<sup>−1</sup> indole butyric acid (IBA) and 0.001 mg L<sup>−1</sup> TDZ, and the differentiation rate of adventitious shoots was greater than 94%. The best shoot elongation medium for adventitious shoots was the MS medium with 0.10 mg L<sup>−1</sup> naphthylacetic acid (NAA). After 45 days of cultivation in the MS medium with 0.10 mg L<sup>−1</sup> NAA, the average plant height was 1.8 cm, and the average number of elongated adventitious shoots was 11 per explant. The 1/2 MS medium with 0.10 mg L<sup>−1</sup> NAA showed the best performance for rooting, and later, shoot growth. The direct shoot induction pathway can induce adventitious shoots much faster than the indirect adventitious shoot induction pathway can, and the time cost via the direct adventitious shoot induction pathway can be shortened by 2–6 weeks compared to that of the indirect shoot induction pathway.https://www.mdpi.com/2075-1729/13/9/1896poplarregeneration in vitrotissue culturephytohormoneproliferation |
| spellingShingle | Huanhuan Li Hang Wang Lianke Guan Zihui Li Hua Wang Jie Luo Optimization of High-Efficiency Tissue Culture Regeneration Systems in Gray Poplar Life poplar regeneration in vitro tissue culture phytohormone proliferation |
| title | Optimization of High-Efficiency Tissue Culture Regeneration Systems in Gray Poplar |
| title_full | Optimization of High-Efficiency Tissue Culture Regeneration Systems in Gray Poplar |
| title_fullStr | Optimization of High-Efficiency Tissue Culture Regeneration Systems in Gray Poplar |
| title_full_unstemmed | Optimization of High-Efficiency Tissue Culture Regeneration Systems in Gray Poplar |
| title_short | Optimization of High-Efficiency Tissue Culture Regeneration Systems in Gray Poplar |
| title_sort | optimization of high efficiency tissue culture regeneration systems in gray poplar |
| topic | poplar regeneration in vitro tissue culture phytohormone proliferation |
| url | https://www.mdpi.com/2075-1729/13/9/1896 |
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