Casparian strip membrane domain protein-like (
CASPL) genes are key genes for the formation and regulation of the Casparian strip and play an important role in plant abiotic stress. However, little research has focused on the members, characteristics, and biological functions of
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Casparian strip membrane domain protein-like (
CASPL) genes are key genes for the formation and regulation of the Casparian strip and play an important role in plant abiotic stress. However, little research has focused on the members, characteristics, and biological functions of the patchouli
PatCASPL gene family. In this study, 156
PatCASPL genes were identified at the whole-genome level. Subcellular localization predicted that 75.6% of
PatCASPL proteins reside on the cell membrane. A phylogenetic analysis categorized
PatCASPL genes into five subclusters alongside
Arabidopsis CASPL genes. In a cis-acting element analysis, a total of 16 different cis-elements were identified, among which the photo-responsive element was the most common in the
CASPL gene family. A transcriptome analysis showed that p-hydroxybenzoic acid, an allelopathic autotoxic substance, affected the expression pattern of
PatCASPLs, including a total of 27 upregulated genes and 30 down-regulated genes, suggesting that these
PatCASPLs may play an important role in the regulation of patchouli continuous cropping obstacles by affecting the formation and integrity of Casparian strip bands. These results provided a theoretical basis for exploring and verifying the function of the patchouli
PatCASPL gene family and its role in continuous cropping obstacles.
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