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首页> 外文期刊>Journal of genetics >Genetic interaction and mapping studies on the leaflet development (lld) mutant in Pisum sativum
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Genetic interaction and mapping studies on the leaflet development (lld) mutant in Pisum sativum

机译：豌豆小叶发育（lld）突变体的遗传相互作用和作图研究

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In Pisum sativum, the completely penetrant leaflet development (lld) mutation is known to sporadically abort pinnae suborgans in the unipinnate compound leaf. Here, the frequency and morphology of abortion was studied in each of the leaf suborgans in 36 genotypes and in presence of auxin and gibberellin, and their antagonists. Various lld genotypes were constructed by multifariously recombining lld with a coch homeotic stipule mutation and with af, ins, mare, mfp, tl and uni-tac leaf morphology mutations. It was observed that the suborgans at all levels of pinna subdivisions underwent lld-led abortion events at different stages of development. As in leafblades, lld aborted the pinnae in leaf-like compound coch stipules. The lld mutation interacted with mfp synergistically and with other leaf mutations additively. The rod-shaped and trumpet-shaped aborted pea leaf suborgans mimicked the phenotype of aborted leaves in HD-ZIP-III-deficient Arabidopsis thaliana mutants. Suborganwise aborted morphologies in lld gnotypes were in agreement with basipetal differentiation of leaflets and acropetal differentiation in tendrils. Altogether, the observations suggested that LLD was the master regulator of pinna development. On the basis of molecular markers found linked to lld, its locus was positioned on the linkage group III of the P. sativum genetic map.
机译：在豌豆（Pisum sativum）中，已知完全渗透性的小叶发育（lld）突变会偶发地中止单羽状复叶中的松果亚器官。在这里，研究了在36种基因型中每个叶片亚器官中存在植物生长素和赤霉素及其拮抗剂时流产的频率和形态。通过将lld与Coch顺应性托叶突变以及af，ins，母马，mfp，tl和单tac叶形态突变进行多种重组，构建了各种lld基因型。观察到，品纳细分的各个级别的亚器官在发育的不同阶段经历了lld引导的流产事件。就像在叶片上一样，lld会在叶片状的复合耳蜗托叶中终止耳廓。 lld突变与mfp协同相互作用，并与其他叶片突变加性相互作用。棒状和喇叭状的豌豆叶中流失的亚器官模仿了HD-ZIP-III缺陷型拟南芥突变体中的流产叶的表型。 lld gnotype的亚有机体流产形态与小叶的基底性分化和卷须中的顶缘分化相符。总而言之，观察结果表明LLD是品纳发育的主要调节者。根据发现的与lld连锁的分子标记，其基因座位于P. sativum遗传图谱的连锁组III上。

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