Protoplasts isolated from cotyledon-derived calli of Actinidia chinensis var. chinensis (2n = 2x=58) were fused by the PEG method with cotyledon-callus protoplasts of A. deliciosa var. deliciosa (2n = 6x = 174) or wit...Protoplasts isolated from cotyledon-derived calli of Actinidia chinensis var. chinensis (2n = 2x=58) were fused by the PEG method with cotyledon-callus protoplasts of A. deliciosa var. deliciosa (2n = 6x = 174) or with mesophyll protoplasts of A. kolomikta (2n = 2x = 58), respectively. Randomly amplified polymorphic DNA (RAPD) markers and flow cytometry was used to confirm the occurrence of somatic hybrids. RAPD results with some primers surveyed indicated that one clone (A. chinensis + A. deliciosa) and four clones (A. chinensis + A. kolomikta) had RAPD banding patterns which combined the parental banding profiles. Ploidy levels of the (A. chinensis + A. deliciosa) clone were deduced as octoploid (2n = 8x), and the (A. chinensis + A. kolomikta) clones were tetraploid (2n = 4x), triploid (2n = 3x) or pentaploid (2n = 5x). The clones were confirmed as interspecific somatic hybrids in Actinidia.展开更多
为研究狗枣猕猴桃[Actinidia kolomikta(Maxim. et Rupr.)Maxim.]AkMYB5的功能,利用生物信息学工具和方法,对其编码蛋白质的理化性质、亲水/疏水性、跨膜结构、结构功能域、二级结构、三级结构、蛋白质修饰位点及同源性等进行分析和预...为研究狗枣猕猴桃[Actinidia kolomikta(Maxim. et Rupr.)Maxim.]AkMYB5的功能,利用生物信息学工具和方法,对其编码蛋白质的理化性质、亲水/疏水性、跨膜结构、结构功能域、二级结构、三级结构、蛋白质修饰位点及同源性等进行分析和预测。结果表明,AkMYB5的cDNA全长为1 339 bp,CDS为1 053 bp,编码蛋白由351个氨基酸构成的亲水性非稳定蛋白,属于MYB5蛋白家族(PLN03212),主要构件为α-螺旋和不规则卷曲,与其他18种植物的MYB氨基酸序列进行比对发现,其与中华猕猴桃变种(Actinidia chinensis var. chinensis)AkMYB5的亲缘关系较近。展开更多
基金The research is supported by grant from the National Natural Science Foundation of China.
文摘Protoplasts isolated from cotyledon-derived calli of Actinidia chinensis var. chinensis (2n = 2x=58) were fused by the PEG method with cotyledon-callus protoplasts of A. deliciosa var. deliciosa (2n = 6x = 174) or with mesophyll protoplasts of A. kolomikta (2n = 2x = 58), respectively. Randomly amplified polymorphic DNA (RAPD) markers and flow cytometry was used to confirm the occurrence of somatic hybrids. RAPD results with some primers surveyed indicated that one clone (A. chinensis + A. deliciosa) and four clones (A. chinensis + A. kolomikta) had RAPD banding patterns which combined the parental banding profiles. Ploidy levels of the (A. chinensis + A. deliciosa) clone were deduced as octoploid (2n = 8x), and the (A. chinensis + A. kolomikta) clones were tetraploid (2n = 4x), triploid (2n = 3x) or pentaploid (2n = 5x). The clones were confirmed as interspecific somatic hybrids in Actinidia.