Dept. Life Sciences and Systems Biology, University of Turin, Via Quarello 15/a, 10135 Turin, Italy.
Dept. Life Sciences and Systems Biology, University of Turin, Via Quarello 15/a, 10135 Turin, Italy.
Plant Sci. 2022 Dec;325:111483. doi: 10.1016/j.plantsci.2022.111483. Epub 2022 Sep 29.
Iron-sulfur (Fe-S) clusters are involved in fundamental biological reactions and represent a highly regulated process involving a complex sequence of mitochondrial, cytosolic and nuclear-catalyzed protein-protein interactions. Iron-sulfur complex assembly (ISCA) scaffold proteins are involved in Fe-S cluster biosynthesis, nitrogen and sulfur metabolism. ISCA proteins are involved in abiotic stress responses and in the pigeon they act as a magnetic sensor by forming a magnetosensor (MagS) complex with cryptochrome (Cry). MagR gene exists in the genomes of humans, plants, and microorganisms and the interaction between Cry and MagR is highly conserved. Owing to the extensive presence of ISCA proteins in plants and the occurrence of homology between animal and human MagR with at least four Arabidopsis ISCAs and several ISCAs from different plant species, we believe that a mechanism similar to pigeon magnetoperception might be present in plants. We suggest that plant ISCA proteins, homologous of the animal MagR, are good candidates and could contribute to a better understanding of plant magnetic induction. We thus urge more studies in this regard to fully uncover the plant molecular mechanisms underlying MagR/Cry mediated magnetic induction and the possible coupling between light and magnetic induction.
铁硫 (Fe-S) 簇参与基本的生物反应,代表了一个高度调控的过程,涉及线粒体、细胞质和核催化的蛋白质-蛋白质相互作用的复杂序列。铁硫簇生物合成 (ISCA) 支架蛋白参与 Fe-S 簇生物合成、氮和硫代谢。ISCA 蛋白参与非生物胁迫反应,在鸽子中,它们通过与隐花色素 (Cry) 形成磁传感器 (MagS) 复合物来充当磁传感器。MagR 基因存在于人类、植物和微生物的基因组中,Cry 和 MagR 之间的相互作用高度保守。由于 ISCA 蛋白在植物中的广泛存在,以及动物和人类 MagR 之间的同源性,至少有四个拟南芥 ISCA 和来自不同植物物种的几个 ISCA,我们相信类似鸽子磁觉的机制可能存在于植物中。我们认为,与动物 MagR 同源的植物 ISCA 蛋白是很好的候选物,可以帮助我们更好地理解植物的磁诱导。因此,我们敦促在这方面进行更多的研究,以充分揭示 MagR/Cry 介导的磁诱导的植物分子机制,以及光和磁诱导之间的可能耦合。
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