Molecular regulation of oil gland development and biosynthesis of essential oils in Citrus spp.

Secretory structures in terrestrial plants serve as reservoirs for a variety of secondary metabolites. Among these, the secretory cavity of the Rutaceae family is notable for containing essential oils with a wide range of applications. However, the molecular basis underlying secretory cavity development is unknown. Here, we revealed a molecular framework for Citrus oil gland formation. Using genetic mapping and genome editing, we demonstrated that this process requires LATE MERISTEM IDENTITY1 (LMI1), a key regulator of leaf serration. A conserved GCC box element of the LMI1 promoter recruits DORNROSCHEN-like (DRNL) for transcriptional activation. This DRNL-LMI1 cascade triggers MYC5 activation, facilitating the development of oil glands and the biosynthesis of essential oils. Our findings spotlight cis-regulatory divergence within leaf shape genes, propelling novel functional tissue formation., , , # Data from: Molecular regulation of oil gland development and biosynthesis of essential oils in *Citrus* spp.

The dataset of the manuscript 'Molecular regulation of oil gland development and biosynthesis of essential oils in Citrus spp.' ad12953, including ATAC-seq, RNA-seq and whole genome re-sequencing data.

## Description of the data and file structure

Three types of data, whole genome re-sequenceing data, RNA-seq and ATAC-seq, are stored in different folders.

In the 01_Resequence folder, you'll find 'HuaPi' kumquat resequence and BSA-seq data, which utilize the reference genome Fortunella hindsii v2.0 ([http://citrus.hzau.edu.cn/download.php](http://citrus.hzau.edu.cn/download.php)).

In the 02_RNAseq folder, it contains three transcriptome data. The HP_RA_youngleaf_RNA-seq data uses Fortunella hindsii v2.0 as the reference genome, while the other RNA-seq data use Citrus sinensis v2.0 ([http://citrus.hzau.edu.cn/download.php](http://citrus.hzau.edu.cn/download.php)) as the ref...,