Direct leaf-peeling method for areca protoplasts: a simple and efficient system for protoplast isolation and transformation in areca palm (Areca catechu)
文献类型： 外文期刊
作者： Wang, Yaodi 1 ; Wang, Linxi 1 ; Liu, Hongjun 1 ; Gou, Bei 1 ; Hu, Weiyao 1 ; Qin, Li 1 ; Shen, Wentao 2 ; Wang, Aiming 4 ; Cui, Hongguang 1 ; Dai, Zhaoji 1 ;
作者机构： 1.Hainan Univ, Sanya Nanfan Res Inst, Key Lab Green Prevent & Control Trop Plant Dis & P, Sch Plant Protect,Minist Educ, Haikou 570228, Hainan, Peoples R China
2.Chinese Acad Trop Agr Sci, Key Lab Biol & Genet Resources Trop Crops, Minist Agr & Rural Affairs, Haikou 571101, Hainan, Peoples R China
3.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Haikou 571101, Hainan, Peoples R China
4.Agr & Agri Food Canada, London Res & Dev Ctr, 1391 Sandford St, London, ON N5V 4T3, Canada
关键词： Areca palm; Areca catechu; Protoplast; Protoplast isolation; PEG-mediated transformation
期刊名称：BMC PLANT BIOLOGY （ 影响因子：5.3； 五年影响因子：5.9 ）
ISSN： 1471-2229
年卷期： 2023 年 23 卷 1 期
页码：
收录情况： SCI
摘要： BackgroundAreca palm (Areca catechu) is a woody perennial plant of both economical and medicinal importance grown in tropical and subtropical climates. Yet, the molecular biology study of areca palm is extremely impeded by its unavailability of a transformation method. An efficient protoplast isolation and transformation system could be highly desirable to overcome this barrier.ResultsHere, we described a simple and efficient method for protoplast isolation and transformation from the perennial plant areca palm. A high yield of protoplasts (2.5 x 10(7) protoplasts per gram of fresh leaf tissues) was obtained from the fresh light green leaflet from the newly-emerged leaf digested overnight in the enzyme solution [2% (w/v) cellulase R10, 0.5% (w/v) macerozyme R10, 0.7 M mannitol, 10 mM CaCl2, 20 mM KCl, 20 mM MES and 0.1% (w/v) BSA, pH 5.7] by the direct leaf-peeling method. The isolated areca protoplasts maintain viability of 86.6% and have been successfully transformed with a green fluorescent protein (GFP)-tagged plasmid (pGreen0029-GFP, 6.0 kb) via the polyethylene glycol (PEG)-mediated transformation. Moreover, the mannitol concentration (optimal: 0.7 M) was determined as a key factor affecting areca protoplast isolation. We also demonstrated that the optimal density of areca protoplast for efficient transformation was at 1.0-1.5 x 10(6) cells/ml. With the optimization of transformation parameters, we have achieved a relatively high transformation efficiency of nearly 50%.ConclusionWe have established the first efficient protocol for the high-yield isolation and transformation of areca palm protoplasts. This method shall be applied in various biological studies of areca palm, such as gene function analysis, genome editing, protein trafficking and localization and protein-protein interaction. In addition, the protoplast system offers a great genetic transformation approach for the woody perennial plant-areca palm. Moreover, the established platform may be applied in protoplast isolation and transformation for other important species in the palm family, including oil palm and coconut.
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