Abstract：
Chloroplasts are not only critical photosynthesis sites in plants, but they also participate in plastidial retrograde signaling in response to developmental and environmental signals. MEcPP (2-C-Methyl-D-erythritol-2,4-cyclopyrophosphate) is an intermediary in the methylerythritol phosphate (MEP) pathway in chloroplasts. It is a critical precursor for the synthesis of isoprenoids and terpenoid derivatives, which play crucial roles in plant growth and development, photosynthesis, reproduction, and defense against environmental constraints. Accumulation of MEcPP under stressful conditions triggers the expression of IMPα-9 and TPR2, contributing to the activation of abiotic stress-responsive genes. In this correspondence, we discuss plastidial retrograde signaling in support of a recently published paper in Molecular Plant (Zeng et al. 2024). We hope that it can shed more insight on the retrograde signaling cascade.
摘要：
叶绿体不仅是植物光合作用的关键位点，但它们也参与质体逆行信号，以响应发育和环境信号。MEcPP（2-C-甲基-D-赤藓糖醇-2,4-环焦磷酸酯）是叶绿体中甲基赤藓糖醇磷酸酯（MEP）途径的中间体。它是合成类异戊二烯和萜类化合物衍生物的关键前体，在植物生长发育中起着至关重要的作用，光合作用,繁殖，和防御环境限制。应激条件下MEcPP的积累会触发IMPa-9和TPR2的表达，从而导致非生物应激反应基因的激活。在这份信件中，我们讨论了质体逆行信号传导，以支持最近发表在《分子植物》上的一篇论文(Zeng等人。2024).我们希望它能对逆行信号级联有更多的了解。
