Rossi-Hassani B D, Zryd J P
Laboratoire de Phytogénétique Cellulaire, Université de Lausanne, Dorigny, Suisse.
Ann Genet. 1994;37(2):53-9.
Portulaca grandiflora, a member of the Centrospermae, produces the alkaloid-type betalain pigment in its petals and stems. Variegation patterns were observed on the corolla of some clones. The authors postulate that in Portulaca grandiflora a relation exist between unstable mutations and the presence of transposable elements in the genome. Experiments with unstable mutants of Portulaca grandiflora having variegated flowers were done. The unstable loci cmI and rmI, which are involved in betalain synthesis were genetically analysed.
大花马齿苋是中央种子目植物的一员，其花瓣和茎中产生生物碱类的甜菜红素色素。在一些克隆植株的花冠上观察到了斑驳图案。作者推测，在大花马齿苋中，不稳定突变与基因组中可转座元件的存在之间存在关联。对具有斑驳花朵的大花马齿苋不稳定突变体进行了实验。对参与甜菜红素合成的不稳定位点cmI和rmI进行了遗传分析。
