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Abstract
背景回顾:Plant genetic transformation strategies serve as essential tools for the genetic engineering and advanced molecular breeding of plants.
提出问题:However, the complicated operational protocol and low efficiency of the current transformation strategies restrict the genetic modification of most plant species.
主要发现:This paper describes the development of a Regenerative Activity-dependent in Planta Injection Delivery (RAPID) method based on the active regeneration capacity of plants.
结果:In this method, Agrobacterium tumefaciens was delivered to plant meristems via injection for inducing transfected nascence tissues. Stable transgenic plants were obtained by subsequent vegetative propagation of the positive nascence tissues. The method was successfully applied for the transformation of plants with strong regeneration capacity, including different genotypes of sweet potato (Ipomoea batatas), potato (Solanum tuberosum), and bayhops (Ipomoea pes-caprae). Compared to the traditional transformation methods, RAPID has a markedly high transformation efficiency, shorter duration, and does not require tissue culture procedures.
结论:The RAPID method therefore overcomes the limitations of traditional methods for achieving rapid in planta transformation, and can be potentially applied to a wide range of plant species that are capable of active regeneration.
摘 要
植物遗传转化策略是植物基因工程和分子育种的必要工具。但是,目前大多数的植物遗传转化策略存在操作复杂、转化效率低的限制。本文开发了一种基于植物较强再生能力的RAPID转化方法。在该方法中,通过注射法将农杆菌递送进植物分生组织中,诱导形成转化的发生组织。随后,通过对阳性发生组织的器官繁殖,获得稳定转化的再生植株。作者成功将该方法应用到了具有较强再生能力的植物中,包括甘薯、番茄以及马鞍藤的不同基因型。与传统的转化方法相比,RAPID的转化效率更高、转化周期更短,并且不需要组织培养程序。因此,RAPID方法可以克服传统方法中不能快速进行稳定转化的限制,能够广泛应用于再生能力强的植物物种中。
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个人简介:
1993-1997年,东北农业大学,学士;
1997-2000年,东北农业大学,硕士;
2000-2004年,浙江大学,博士;
2006-2011年,新加坡国立大学,博后;
2012年-至今,中科院华南植物园,研究员。
研究方向:植物发育分子生物学。
1. 植物种子发育的分子机理。
探索种子发育过程中胚胎与胚乳、合子与母体组织、种子与植株之间的信号交流和互作关系,同时从分子水平上揭示植物激素(赤霉素)参与植物种子等发育与抗性反应过程的内在机制;
2. 作物品质调控机制研究。
探索大豆等种子发育及主要品质性状(蛋白质、油脂等)形成的分子基础,克隆关键基因,解析分子调控网络,为改善作物相关经济性状提供理论依据。
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