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Construction of a single-cell transcriptome atlas for Pogostemon cablin embryoids reveals PcNAC048 as a dual regulator coordinating lateral root morphogenesis and patchouli alcohol biosynthesis

ABSTRACT: We have employed a single cell sequencing approach using 10x Genomics scRNAseq to study the single-cell atlas of Pogostemon cablin globular somatic embryos (GSE) and cotyledonary somatic embryos (CSE). Pseudo-time analysis reconstructed the continuous differentiation trajectory of apical meristem cells and epidermal cells. Further research identified PcNAC048 as a potential transcription factor regulating embryonic cell differentiation, which promotes lateral root development and negatively regulates the biosynthesis of patchouli alcohol. Overall, this study provides theoretical support for the development of Pogostemon cablin germplasm resources and the regulation of medicinal compounds.

ORGANISM(S): Pogostemon cablin

PROVIDER: GSE304316 | GEO | 2025/12/02

REPOSITORIES: GEO

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Project description:Sour passion fruit (Passiflora edulis Sims) has economic and social relevance and is an alternative crop mainly for family farming agriculture. The use of micropropagation by somatic embryogenesis offers scale-up clonal propagation with high phytosanitary quality. The aim of this work was to evaluate the influence of polyethylene glycol (PEG) on the maturation of somatic embryos associated with differential accumulation of proteins and changes in the endogenous polyamines (PAs) content during somatic embryogenesis of P. edulis ‘UENF Rio Dourado’. Maturation of somatic embryos was performed using embryogenic callus in MS culture medium with PEG 6% or without PEG (control). PEG 6% promoted the maturation of a significantly higher number of somatic embryos at globular and cotyledonary stages when compared to control treatment. The higher somatic embryo formation induced by PEG 6% was associated with an increase in endogenous contents of free spermine, a PA with an important role in the maturation process of somatic embryogenesis cultures. PEG also promoted a significantly higher content of putrescine and total free PAs at the end of maturation, which was relevant for the increase in the number of somatic embryos. Comparative proteomic analyses of PEG 6%/control revealed that PEG 6% treatment induced the up-accumulation of proteins related to the glycolytic process, generation of precursor metabolites energy, and response to light stimulus, we can highlight the enolase ENO1, triosephosphate isomerase (TPI), ribulose bisphophate carboxylase/oxygenase activase chloroplastic (RCA), glyceraldehyde-3-phosphate dehydrogenase GAPCP-1, chloroplastic (GAPCP-1), succinate dehydrogenase [ubiquinone] flavoprotein subunit1, mitochondrial (SDH1-1), pyruvate dehydrogenase E1 component subunit alpha, mitochondrial (IAR4), ATP synthase CF1 beta subunit (PB), malate dehydrogenase [NADP], chloroplastic (AT5G58330) and chlorophyll a-b binding protein 21, chloroplastic (LHB1B1), and the down-accumulated proteins related mainly to the cellular metabolic process with proteins such as NADP-dependent malic enzyme (NADP-ME4), phosphoenolpyruvate carboxylase 2 (PPC1), UDP-glucose 6-dehydrogenase 1 and 4 (UGD2) and sucrose synthase 2 isoform X2 (SSA) and cell division cycle protein 48 homolog (ATCDC48B). The use of PEG induced thematuration and development of somatic embryos of P. edulis Sims ‘UENF Rio Dourado’ by the differential accumulation of proteins and modulation of endogenous contents of PAs

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Construction of a single-cell transcriptome atlas for Pogostemon cablin embryoids reveals PcNAC048 as a dual regulator coordinating lateral root morphogenesis and patchouli alcohol biosynthesis

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