iProXProteomicsJianghua ChenMedicago Truncatulahttp://www.iprox.org/page/project.html?id=IPX0003542000jhchen@xtbg.ac.cnXishuangbanna Tropical Botanical GardeniProXNyctinastic leaf movement of Fabaceae is driven by the tiny motor organ pulvinus located at the base of the leaf or leaflet. Despite the increased understanding of the essential role of <i>ELONGATED PETIOLULE1</i> (<i>ELP1</i>)/<i>PETIOLE LIKE PULVINUS</i> (<i>PLP</i>) orthologs in determining pulvinus identity in legumes, key regulatory components and molecular mechanisms underlying this movement remain largely unclear. Here, we used WT pulvinus and the equivalent tissue in the <i>elp1</i> mutant to carry out transcriptome and proteome experiments. The omics data indicated that there are multiple cell biological processes altered at the gene expression and protein abundance level during the pulvinus development. In addition, comparative analysis of different leaf tissues provided clues to illuminate the possible common primordium between pulvinus and petiole, as well as the function of ELP1. Furthermore, the auxin pathway, cell wall composition and chloroplast distribution were altered in <i>elp1</i> mutants, verifying their important roles in pulvinus development. This study provides a comprehensive insight into the motor organ of the model legume <i>Medicago truncatula</i> and further supplies a rich dataset to facilitate the identification of novel players involved in nyctinastic movement.Multidimensional Gene Regulatory Landscape of Motor Organ Pulvinus in the Model Legume <i>Medicago truncatula</i>.Bai Quanzi Q, Yang Wenjing W, Qin Guochen G, Zhao Baolin B, He Liangliang L, Zhang Xuan X, Zhao Weiyue W, Zhou Dian D, Liu Ye Y, Liu Yu Y, He Hua H, Tadege Million M, Xiong Yan Y, Liu Changning C, Chen Jianghua JfalseMecicago truncatula pulvinus proteomicsthe pulvinus proteomics of Mecicago truncatula A17Sat Sep 25 00:00:00 BST 2021PXD028750388035457256