背景:抽穗是大白菜的重要农艺特征,卷心菜,卷心菜还有生菜.抽穗叶作为营养贮藏器官,这有助于绿叶头的高质量和经济价值。在抽穗阶段,叶片发育至关重要,先前预测参与抽穗过程的大多数基因都是基于拟南芥叶片发育研究。
目标:直到日期,没有发表的评论文章证明了所有已确定的叶片曲率和标题调节器的完整布局。在这次审查中,我们总结了所有已确定的直接或间接参与芸苔属作物叶片曲率和抽穗的生理和遗传调节因子。通过整合所有已识别的调节器,这些调节器提供了叶片曲率和航向的连贯逻辑,我们提出了芸苔属作物的分子机制。这篇综述通过提供对叶片发育的独特见解,为未来不同抽穗型白菜和大白菜的育种增加了价值。
未经证实:叶片曲率和抽穗是通过基因之间的协同相互作用建立的,转录因子,microRNAs,植物激素,和调节初级和次级形态发生的环境刺激。已经使用转化和基因组编辑鉴定了各种基因,这些基因负责芸苔属作物中叶片弯曲和抽穗的形成。在芸苔属植物中观察到了一系列的叶片形态,由于负责细胞分裂和叶极性的突变决定子而建立。
Heading is an important agronomic feature for Chinese cabbage, cabbage, and lettuce. The heading leaves function as nutrition storage organs, which contribute to the high quality and economic worth of leafy heads. Leaf development is crucial during the heading stage, most genes previously predicted to be involved in the heading process are based on Arabidopsis leaf development studies.
Till date, there is no published review article that demonstrated a complete layout of all the identified regulators of leaf curvature and heading. In this review, we have summarized all the identified physiological and genetic regulators that are directly or indirectly involved in leaf curvature and heading in Brassica crops. By integrating all identified regulators that provide a coherent logic of leaf incurvature and heading, we proposed a molecular mechanism in Brassica crops with graphical illustrations. This review adds value to future breeding of distinct heading kinds of cabbage and Chinese cabbage by providing unique insights into leaf development.
Leaf curvature and heading are established by synergistic interactions among genes, transcription factors, microRNAs, phytohormones, and environmental stimuli that regulate primary and secondary morphogenesis. Various genes have been identified using transformation and genome editing that are responsible for the formation of leaf curvature and heading in Brassica crops. A range of leaf morphologies have been observed in Brassica, which are established because of the mutated determinants that are responsible for cell division and leaf polarity.