Abstract
Transformation and high efficient regeneration of transgenic plants from the trimmed etiolated shoot/root region (TESRR) of Anliucheng sweet orange [Citrus sinensis (L.) Osb.] seedling was reported. A visual green fluorescent protein (GFP) marker gene was introduced to evaluate transformation efficiency by using the explants from TESRR and epicotyls. The transformation protocol was: infection 20 min, co-culture 3 d, selection culture 30 d, and rooting 15 d. Out of a total of 288 sprouted shoots obtained from TESRR, 34 shoots (11.8 %) yielded GFP expression. In contrast, only 2 (3.0 %) of the 67 sprouted shoots from epicotyl transformation yielded GFP expression. In all plants showing the green fluorescence an expected 500 bp GFP fragment was proved by PCR analysis. Southern blot analysis further confirmed the integration of GFP gene into citrus genome. Transgenic plantlets were obtained within 80 d using the TESRR, compared within 150 d by using epicotyls.
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Abbreviations
- TESRR:
-
trimmed etiolated shoot/root region
- AS:
-
acetosyringone
- BA:
-
6-benzyladenine
- GFP:
-
green fluorescent protein
- GUS:
-
β-glucuronidase
- IBA:
-
indole butyric acid
- KIN:
-
kinetin
- MT medium:
-
Murashige and Tucker (1969) medium
- NAA:
-
α-napthaleneacetic acid
- NPT II:
-
neomycin phosphotransferase II
References
Ballester, A., Cervera, M., Peña, L.: Efficient production of transgenic citrus plants using isopentenyl transferase positive selection and removal of the marker gene by site-specific recombination. — Plant Cell Rep. 26: 39–45, 2007.
Cai, X.D., Liu, X., Guo W.W.: GFP expression as an indicator of somatic hybrids between transgenic Satsuma mandarin and calamondin at embryoid stage. — Plant Cell Tissue Organ Cult. 87: 245–253, 2006.
Cervera, M., Juárez, J., Navarro, A., Pina, J.A., Durán-Vila, N., Navarro, L., Peña, L., 1998. Genetic transformation and regeneration of mature tissues of woody fruit plants bypassing the juvenile stage. — Transgenic Res. 7: 51–59, 1998.
Cheng, Y.J., Guo, W.W., Yi, H.L., Pang, X.M., Deng, X.X.: An efficient protocol for genomic DNA extraction from citrus species. — Plant mol. Biol. Rep. 21: 117a–117g, 2003.
Chiu, W.L., Niwa, Y., Zeng, W.K., Hirano, T., Kobayashi, H., Sheen, J.: Engineered GFP as a vital reporter in plants. — Curr. Biol. 6: 325–330, 1996.
Dominguez, A., Fagoaga, C., Navarro, L., Moreno, P., Peña, L.: Regeneration of transgenic citrus plants under non selective conditions results in high-frequency recovery of plants with silenced transgenes. — Mol. Genet. Genomics 267: 544–556, 2002.
Duan, Y.X., Guo, W.W., Meng, H.J., Tao, N.G., Li, D.D., Deng, X.X.: High efficient transgenic plant regeneration from embryogenic calluses of Citrus sinensis. — Biol. Plant. 51: 212–216, 2007a.
Duan, Y.X., Liu, X., Fan, J., Li, D.L., Wu, R.C., Guo, W.W.: Multiple shoot induction from seedling epicotyls and transgenic citrus plant regeneration containing the green fluorescent protein gene. — Bot. Stud. 48: 165–171, 2007b.
EI-Shemy, H., Khalafalla, M., Fujita, K., Ishimoto, M.: Improvement of protein quality in transgenic soybean plants. — Biol. Plant. 51: 277–284, 2007.
Ghorbel, R., Juarez, J., Navarro, L., Peña, L.: Green fluorescent protein as a screenable marker to increase the efficiency of generating transgenic woody fruit plants. — Theor. appl. Genet. 99: 350–358, 1999.
Guo, W.W., Cheng, Y.J., Deng, X.X.: Regeneration and molecular characterization of intergeneric somatic hybrids between Citrus reticulata and Poncirus trifoliata. — Plant Cell Rep. 20: 829–834, 2002.
Guo, W.W., Duan, Y.X., Olivares-Fuster, O., Wu, Z.C., Arias, C.R., Burns, J.K., Grosser, J.W.: Protoplast transformation and regeneration of transgenic Valencia sweet orange plants containing the juice quality related pectin methylesterase gene. — Plant Cell Rep. 24: 482–486, 2005.
Guo, W.W., Grosser, J.W.: Somatic hybrid vigor in Citrus: direct evidence from protoplast fusion of an embryogenic callus line with a transgenic mesophyll parent expression the GFP gene. — Plant Sci. 168: 1541–1545, 2005.
Haseloff, J., Siemering, K.R., Prasher, D.C., Sarah, H.: Removal of a cryptic intron and subcellular localization of green fluorescent protein are required to mark transgenic Arabidopsis plants brightly. — Proc. nat. Acad. Sci. USA 94: 2122–2127, 1997.
Khawale, R.N., Singh, S.K., Garg, G., Baranwal, V.K., Ajirlo, S.A.: Agrobacterium-mediated genetic transformation of Nagpur mandarin (Citrus reticulata Blanco). — Curr. Sci. 91: 1700–1705, 2006.
Kobayashi, S., Uchimiya, H.: Expression and integration of a foreign gene in orange (Citrus sinensis Osb.) protoplasts by direct DNA transfer. — Jap. J. Genet. 64, 91–97: 1989.
Li, D.D., Shi, W., Deng, X.X.: Agrobacterium-mediated transformation of embryogenic calluses of Ponkan mandarin and the regeneration of plants containing the chimeric ribonuclease gene. — Plant Cell Rep. 21: 153–156, 2002.
Li, D.D., Shi, W., Deng, X.X.: Factors influencing Agrobacterium-mediated embryogenic callus transformation of Valencia sweet orange (Citrus sinensis) containing the pTA29-barnase gene. — Tree Physiol. 23: 1209–1215, 2003.
Moore, G.A., Jacono, C.C., Neidigh, J., Lawrence, S.D., Cline, K.: Agrobacterium-mediated transformation of Citrus stem segments and regeneration of transgenic plants. — Plant Cell Rep. 11: 238–242, 1992.
Murashige, T., Tucker, D.P.H.: Growth factor requirements of citrus tissue culture. — In: Chapman, H.D. (ed.): Proceedings of the 1st Citrus Symposium. Pp. 1155–1161. Riverside 1969.
Olivares-Fuster, O., Duran-Vila, N., Navarro, L.: Green fluorescent protein as a visual marker in somatic hybridization. — Ann. Bot. 89: 491–497, 2002.
Orbovic, V., Grosser, J.W.: Citrus. — Methods mol. Biol. 344: 177–189, 2006.
Peña, L., Cervera, M., Juarez, J., Navarro, A., Pina, J.A., Duran-Vila, N.: Agrobacterium-mediated transformation of sweet orange and regeneration of transgenic plants. — Plant Cell Rep. 14: 616–619, 1995.
Suwanaketchanatit, C., Piluek, J., Peyachoknagul, S., Huehne, P.S.: High efficiency of stable genetic transformation in Dendrobium via microprojectile bombardment. — Biol. Plant. 51: 720–727, 2007.
Uzelac, B., Ninkovic, S., Smigocki, A., Budimir. S.: Origin and development of secondary somatic embryos in transformed embryogenic cultures of Medicago sativa. — Biol. Plant. 51: 1–6, 2007.
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Acknowledgements: This research was financially supported by the national NSF of China, the Ministry of Education (20060504014), the National 863 project of China (2007AA10Z182), and the NSF of Hubei province of China (2008CDA069).
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Li, D.L., Tan, B., Duan, Y.X. et al. Regeneration of transgenic citrus plants from the trimmed shoot/root region of etiolated seedlings. Biol Plant 53, 578–582 (2009). https://doi.org/10.1007/s10535-009-0105-0
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DOI: https://doi.org/10.1007/s10535-009-0105-0