{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,6]],"date-time":"2026-07-06T12:21:52Z","timestamp":1783340512903,"version":"3.54.6"},"reference-count":64,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2026,7,6]],"date-time":"2026-07-06T00:00:00Z","timestamp":1783296000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Provincial Research Institutes Scientific Research Operating Funds Project of Heilongjiang Province","award":["CZKYF2025-1-B013"],"award-info":[{"award-number":["CZKYF2025-1-B013"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>Physalis pubescens L. is a seasonal fruit with high nutritional value but a short shelf life that limits its processing and utilization. This study integrated metagenomics and metabolomics to investigate the comparative effects of Lactiplantibacillus plantarum fermentation on volatile flavor metabolites and microbial community composition of P. pubescens by comparing initial (0 h) and post-fermentation (24 h) states. After 24 h of fermentation, 1316 volatile compounds were putatively identified by GC-MS, with 592 metabolites significantly changed and 501 upregulated and 91 downregulated. Key flavor compounds that impart citrus, floral, fruity, and rose notes including D-limonene, geraniol, D-carvone, and phenylethyl alcohol were markedly increased. Metagenomic analysis revealed that L. plantarum rapidly dominated the microbial community (relative abundance surged from &lt;0.05% to ~72%) while effectively suppressing potential spoilage bacteria such as Escherichia coli. Functional gene annotation demonstrated significant enrichment of amino acid, carbohydrate, and fatty acid metabolism pathways, with key enzyme genes (L-lactate dehydrogenase, pyruvate oxidase, acetyl-CoA carboxylase) predominantly assigned to L. plantarum, suggesting their potential contribution to the generation of organic acids, ethanol, and esters. Spearman correlation analysis indicated that Lactobacillaceae genera were significantly positively correlated with terpenoids, phenols, alcohols, and aldehydes. This study provides the first metagenomics-metabolomics insight into the microbial and molecular mechanisms associated with flavor formation in LAB-fermented P. pubescens, offering a theoretical foundation for developing stable and controllable fermented fruit products.<\/jats:p>","DOI":"10.3390\/molecules31132377","type":"journal-article","created":{"date-parts":[[2026,7,6]],"date-time":"2026-07-06T12:01:37Z","timestamp":1783339297000},"page":"2377","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Metagenomic and Metabolomic Insights into Volatile Flavor Changes and Microbial Community Shifts in Physalis pubescens L. Fermentation by Lactiplantibacillus plantarum"],"prefix":"10.3390","volume":"31","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-1747-2783","authenticated-orcid":false,"given":"Song","family":"Yan","sequence":"first","affiliation":[{"name":"Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jialei","family":"Li","sequence":"additional","affiliation":[{"name":"Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kaixin","family":"Chen","sequence":"additional","affiliation":[{"name":"Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chuanying","family":"Ren","sequence":"additional","affiliation":[{"name":"Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6174-3858","authenticated-orcid":false,"given":"Shan","family":"Zhang","sequence":"additional","affiliation":[{"name":"Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qing","family":"Chen","sequence":"additional","affiliation":[{"name":"Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-9903-4295","authenticated-orcid":false,"given":"Yang","family":"Gao","sequence":"additional","affiliation":[{"name":"Food Processing Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bin","family":"Liu","sequence":"additional","affiliation":[{"name":"College of Pharmacy, Harbin University of Commerce, Harbin 150028, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,7,6]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Li, Y.-C., Pang, Y.-Y., Zhang, Q., Zhang, H.-Y., Wang, Y.-W., Sun, Y.-M., Zeng, G.-Z., and Yin, J.-L. 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