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Overexpression ofβ-1,4-Glucanase gene eueg1 Improves Micrografting of Eucommia ulmoides

Phyton-International Journal of Experimental Botany 2023年第11期92卷 3063-3075页

作者： Lei Wang Runying Wang Yi Li Yichen Zhao Degang Zhao The Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region(Ministry of Education) College of Tea SciencesCollege of Life SciencesGuizhou UniversityGuiyang550025China Guizhou Plant Conservation Technology Center Guizhou Academy of Agricultural SciencesGuiyang550006China Department of Plant Science and Landscape Architecture University of ConnecticutStorrsConnecticutUSA

Adventitious root formation poses a major constraint on the tissue culture and genetic transformation of Eucommia *** offers a new method for the transplantation of genetic transformation,and its success depends on the formation of graft *** study used transgenic rootless test-tube seedlings as scions and seedlings from seed as rootstocks during micrografting to avoid the rooting issues that occur during tissue culture and to investigate the role of the eueg1 gene in the graft healing *** found that the eueg1 gene is a vital regulator of graft,and its overexpression contributes to the survival of Eucommia ulmoides *** eueg1 gene transgenic plants(TP)used as scions for micrografting presented a significantly higher survival rate than the wild type(WT)and empty vector(EV)regenerated *** the grafting healing process,the expression of the eueg1 gene was higher during the period of callus proliferation,suggesting that the eueg1 gene was involved in the graft healing *** observation revealed that more calluses tissue appeared at the junction of transgenic scions,and the connection with the rootstock was stronger,which benefits wound *** results provide new insights into Eucommia ulmoides micrografting and indicate that the eueg1 gene can promote wound healing and improve the micrografting survival rate.

关键词： Eucommia ulmoides genetic transformation eueg1 gene micrografting

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