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Liu Y, Zhou N, Luo C, Zhang Q, Sun P, Fu J, Li S, Li Z. Shoot Organogenesis and Regeneration from Leaf Seedlings of Diospyros oleifera Cheng. PLANTS (BASEL, SWITZERLAND) 2023; 12:3507. [PMID: 37836247 PMCID: PMC10574934 DOI: 10.3390/plants12193507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/04/2023] [Accepted: 10/04/2023] [Indexed: 10/15/2023]
Abstract
Persimmons (Diospyros) are economically important trees that are widely cultivated for wood production in China, and Diospyros oleifera Cheng is the main persimmon grafting stock. However, an efficient tissue culture system has not been perfected for D. oleifera due to the limits of proliferation and rooting cultures. Therefore, this study examined the effects of different plant growth regulators and concentrations on the primary culture of young embryos, induction of leaf callus, differentiation of adventitious shoots, and rooting culture of D. oleifera. The optimal formula for young embryo germination was 1/2 Murashige and Skoog (MS) medium containing 0.5 mg/L gibberellic acid (GA3); after 25 days, the sprouting rate of the young embryos was 67.3%. The best medium for leaf callus induction was 1/2MS medium containing 2.0 mg/L of 6-benzylaminopurine (6-BA) and 0.5 mg/L of naphthaleneacetic acid (NAA), and the callus induction rate was 88.9%. Then, the callus was transferred to 1/2MS medium containing 2.0 mg/L of zeatin (ZT), 0.5 mg/L of NAA, and 2.0 mg/L of thidiazuron (TDZ) to induce adventitious shoots; after 25 days, 5.4 buds were produced per explant, and the induction rate of the adventitious shoots was 88.3%. The adventitious shoots were transferred to 1/2MS medium containing 2.0 mg/L of ZT, 2.0 mg/L of 6-(γ,γ-dimethylallylamino)purine (2iP), and 0.1 mg/L of indole acetic acid (IAA) for the proliferation culture, for which the multiplication coefficient approached 7.5. After multiplication, the adventitious shoots were inoculated into 1/2MS medium containing 1.0 mg/L of indole butyric acid (IBA), 0.5 mg/L of NAA, and 1.0 mg/L of kinetin (KT); the rooting rate was 60.2%, and the average number of roots was 6.9.
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Affiliation(s)
- Yang Liu
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Central South University of Forestry and Technology, Ministry of Education, Changsha 410004, China; (Y.L.); (C.L.)
- Hunan Provincial Key Laboratory of Forestry Biotechnology, College of Life Science and Technology, Changsha 410004, China
- Research Institute of Non-Timber Forestry, Chinese Academy of Forestry, Zhengzhou 450003, China; (Q.Z.); (P.S.); (J.F.)
- The Belt and Road International Union Research Center for Tropical Arid Non-Wood Forest in Hunan Province, Changsha 410004, China
- The Key Laboratory of Non-Wood Forest Products of State Forestry Administration, Central South University of Forestry and Technology, Changsha 410004, China
| | - Naifu Zhou
- Hunan Provincial Cooperative Center of Water Resources Research and Development, Changsha 410031, China
| | - Chengrui Luo
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Central South University of Forestry and Technology, Ministry of Education, Changsha 410004, China; (Y.L.); (C.L.)
- The Belt and Road International Union Research Center for Tropical Arid Non-Wood Forest in Hunan Province, Changsha 410004, China
- The Key Laboratory of Non-Wood Forest Products of State Forestry Administration, Central South University of Forestry and Technology, Changsha 410004, China
| | - Qi Zhang
- Research Institute of Non-Timber Forestry, Chinese Academy of Forestry, Zhengzhou 450003, China; (Q.Z.); (P.S.); (J.F.)
| | - Peng Sun
- Research Institute of Non-Timber Forestry, Chinese Academy of Forestry, Zhengzhou 450003, China; (Q.Z.); (P.S.); (J.F.)
| | - Jianmin Fu
- Research Institute of Non-Timber Forestry, Chinese Academy of Forestry, Zhengzhou 450003, China; (Q.Z.); (P.S.); (J.F.)
| | - Shuzhan Li
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Central South University of Forestry and Technology, Ministry of Education, Changsha 410004, China; (Y.L.); (C.L.)
- The Belt and Road International Union Research Center for Tropical Arid Non-Wood Forest in Hunan Province, Changsha 410004, China
- The Key Laboratory of Non-Wood Forest Products of State Forestry Administration, Central South University of Forestry and Technology, Changsha 410004, China
| | - Ze Li
- Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Central South University of Forestry and Technology, Ministry of Education, Changsha 410004, China; (Y.L.); (C.L.)
- Hunan Provincial Key Laboratory of Forestry Biotechnology, College of Life Science and Technology, Changsha 410004, China
- The Belt and Road International Union Research Center for Tropical Arid Non-Wood Forest in Hunan Province, Changsha 410004, China
- The Key Laboratory of Non-Wood Forest Products of State Forestry Administration, Central South University of Forestry and Technology, Changsha 410004, China
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