植物叶绿素降解机制研究进展

Research Advance on Chlorophyll Degradation in Plants

叶绿素降解与作物产量密切相关,叶绿素降解延迟,能延长作物后期的光合能力,并提高作物产量。近年随着结构生物学、基因组测序和生物信息学的发展,人们已经在植物叶绿素降解机制的研究上取得了一系列进展,特别是对叶绿素降解的主要生化途径——脱镁叶绿酸氧化酶(pheide a oxygenase,Pa O)途径已有深入的了解。主要对近年来叶绿素降解代谢、调控机理、滞绿突变体等三方面的研究进展进行综述,并对未来研究方向进行了展望,旨为作物育种和光高效利用提供理论依据。

Chlorophyll degradation is closely related to crop production. Delayed chlorophyll degradation in crops increasesphotosynthetic capacity at late stages,leading to the increase of crop production. With the development of structural biology,genomesequencing and bioinformatics in recent years,the regulatory mechanism of plant chlorophyll degradation pathway has witnessed some greatprogresses;especially PAO（Pheide a oxygenase）pathway,the primary chlorophyll degradation pathway,has been largely elucidated. Inthis review,we summarized the advances on 3 aspects of chlorophyll degradation pathways,the regulatory mechanism and stay-green mutants,and we also discussed some future research directions,aim to supply idea for the crop breeding and efficient use of light in crop.