Project description:The conservation of the endangered Korean fir, Abies koreana, is of critical ecological importance. In our previous study, a yeast-like fungus identified as Aureobasidium pullulans AK10, was isolated and shown to enhance drought tolerance in A. koreana seedlings. In this study, the effectiveness of A. pullulans AK10 treatment in enhancing drought tolerance in A. koreana was confirmed. Furthermore, using transcriptome analysis, we compared A. koreana seedlings treated with A. pullulans AK10 to untreated controls under drought conditions to elucidate the molecular responses involved in increased drought tolerance.
Project description:In order to know more about the expression levels of aroma-related genes involved in the metabolic pathways, transcriptome sequencing of Granny Smith and Jonagold apples was conducted utilizing the Illumina platform. Our study provides new insights on the understanding of transcriptional regulatory mechanisms associated with aroma volatiles formation in apples.
Project description:Comparative analysis of tobacco leaves transcriptomes unveils carotenoid pathway potentially determined the characteristics of aroma compounds in different environmental regions. Tobacco (Nicotiana tabacum) is a sensitive crop to environmental changes, and a tobacco with unique volatile aroma fractions always formed in specific ecological conditions. In order to investigate the differential expressed genes caused by environmental changes and reveal the formation mechanism of characteristics of tobacco in three different aroma tobacco regions of Guizhou Province, Agilent tobacco microarray was adapted for transcriptome comparison of tobacco leaves in medium aroma tobacco region Kaiyang and light aroma tobacco regions Weining and Tianzhu. Results showed that there was big difference among the gene expression profiles of tobacco leaves in different environmental conditions. A total of 517 differential expressed genes (DEGs) between Weining and Tianzhu were identified, while 733 and 1,005 genes differentially expressed between Longgang and another two tobacco regions Weining and Tianzhu, respectively. Compared with Longgang, up-regulated genes in Weining and Tianzhu were likely involved in secondary metabolism pathways, especially carotenoid pathway, including PHYTOENE SYNTHASE, PHYTOENE DEHYDROGENASE, LYCOPENE ε-CYCLASE, CAROTENOID β-HYDROXYLASE and CAROTENOID CLEAVAGE DIOXYGENASE 1 genes, while most down-regulated genes played important roles in response to temperature and light radiation, such as heat shock proteins. Gene Ontology and MapMan analyses demonstrated that the DEGs among different environmental regions were significantly enriched in light reaction of photosystem II, response of stimulus and secondary metabolism, suggesting they played crucial roles in environmental adaptation and accumulation of aroma compounds in tobacco plants. Through comprehensive transcriptome comparison, we not only identified several stress response genes in tobacco leaves from different environmental regions but also highlighted the importance of carotenoid pathway genes for characteristics of aroma compounds in specific growing regions. Our study primarily laid the foundation for further understanding the molecular mechanism of environmental adaptation of tobacco plants and molecular regulation of aroma substances in tobacco leaves. In order to investigate the differential expressed genes caused by environmental changes and reveal the formation mechanism of characteristics of tobacco in three different aroma tobacco regions of Guizhou Province, Agilent tobacco microarray was adapted for transcriptome comparison of tobacco leaves in medium aroma tobacco region Kaiyang and light aroma tobacco regions Weining and Tianzhu.
Project description:Soybeans fermented by Bacillus subtilis BJ3-2 exhibits strong ammonia taste in medium temperature below 37℃ and prominent soy sauce-like aroma moderate temperatures above 45℃. The transcriptome sequencing of Bacillus subtilis BJ3-2 (incubating at 37°C and 45°C) has been completed, screening of differentially expressed genes (DEGs) through data analysis, and analyzing their metabolic pathways, laying a foundation for exploring the regulatory mechanism of soy sauce-like aroma formation.
2021-12-31 | GSE166082 | GEO
Project description:Whole genome sequencing of Populus nigra and Populus koreana
Project description:Here, de novo transcriptome assemblies for leaf and flower tissues of Forsythias were performed, resulting in 81913 unigenes of F. suspensa, 88491 unigenes of F. viridissima and 69458 unigenes of F. koreana (F. viridissima var. koreana). Classification of the annotated unigenes by gene ontology terms and KEGG pathways was used to explore transcriptomic differences among the Forsythias. Orthogroup was introduced to compare expression levels of unigenes in tissues from different species, which unveiled that three leaf tissues of Fosythias were closely correlated based on expression values of orthologous unigenes. Showing high expression mainly in leaves of F. viridissima and F. koreana, candidate homologs for genes involved in the biosynthetic pathway of lignans and phenylethanoid glycosides were determined in these transcriptome assemblies.
Project description:Here, de novo transcriptome assemblies for leaf and flower tissues of Forsythias were performed, resulting in 81913 unigenes of F. suspensa, 88491 unigenes of F. viridissima and 69458 unigenes of F. koreana (F. viridissima var. koreana). Classification of the annotated unigenes by gene ontology terms and KEGG pathways was used to explore transcriptomic differences among the Forsythias. Orthogroup was introduced to compare expression levels of unigenes in tissues from different species, which unveiled that three leaf tissues of Fosythias were closely correlated based on expression values of orthologous unigenes. Showing high expression mainly in leaves of F. viridissima and F. koreana, candidate homologs for genes involved in the biosynthetic pathway of lignans and phenylethanoid glycosides were determined in these transcriptome assemblies.
Project description:Here, de novo transcriptome assemblies for leaf and flower tissues of Forsythias were performed, resulting in 81913 unigenes of F. suspensa, 88491 unigenes of F. viridissima and 69458 unigenes of F. koreana (F. viridissima var. koreana). Classification of the annotated unigenes by gene ontology terms and KEGG pathways was used to explore transcriptomic differences among the Forsythias. Orthogroup was introduced to compare expression levels of unigenes in tissues from different species, which unveiled that three leaf tissues of Fosythias were closely correlated based on expression values of orthologous unigenes. Showing high expression mainly in leaves of F. viridissima and F. koreana, candidate homologs for genes involved in the biosynthetic pathway of lignans and phenylethanoid glycosides were determined in these transcriptome assemblies.
Project description:Comparative analysis of tobacco leaves transcriptomes unveils carotenoid pathway potentially determined the characteristics of aroma compounds in different environmental regions. Tobacco (Nicotiana tabacum) is a sensitive crop to environmental changes, and a tobacco with unique volatile aroma fractions always formed in specific ecological conditions. In order to investigate the differential expressed genes caused by environmental changes and reveal the formation mechanism of characteristics of tobacco in three different aroma tobacco regions of Guizhou Province, Agilent tobacco microarray was adapted for transcriptome comparison of tobacco leaves in medium aroma tobacco region Kaiyang and light aroma tobacco regions Weining and Tianzhu. Results showed that there was big difference among the gene expression profiles of tobacco leaves in different environmental conditions. A total of 517 differential expressed genes (DEGs) between Weining and Tianzhu were identified, while 733 and 1,005 genes differentially expressed between Longgang and another two tobacco regions Weining and Tianzhu, respectively. Compared with Longgang, up-regulated genes in Weining and Tianzhu were likely involved in secondary metabolism pathways, especially carotenoid pathway, including PHYTOENE SYNTHASE, PHYTOENE DEHYDROGENASE, LYCOPENE ε-CYCLASE, CAROTENOID β-HYDROXYLASE and CAROTENOID CLEAVAGE DIOXYGENASE 1 genes, while most down-regulated genes played important roles in response to temperature and light radiation, such as heat shock proteins. Gene Ontology and MapMan analyses demonstrated that the DEGs among different environmental regions were significantly enriched in light reaction of photosystem II, response of stimulus and secondary metabolism, suggesting they played crucial roles in environmental adaptation and accumulation of aroma compounds in tobacco plants. Through comprehensive transcriptome comparison, we not only identified several stress response genes in tobacco leaves from different environmental regions but also highlighted the importance of carotenoid pathway genes for characteristics of aroma compounds in specific growing regions. Our study primarily laid the foundation for further understanding the molecular mechanism of environmental adaptation of tobacco plants and molecular regulation of aroma substances in tobacco leaves.