Enzymatic production and emission of floral scent volatiles in Jasminum sambac

Bera, Paramita; Mukherjee, Chiranjit; Mitra, Adinpunya

doi:10.1016/j.plantsci.2016.11.013

Cited by 58 publications

(56 citation statements)

References 35 publications

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“…Notably, some studies have reported that jasmine flowers also have therapeutic effects on inflammatory diseases, such as conjunctivitis and dermatitis [31]. The main compounds of jasmine tea include α-farnesene, (Z)-3-hexenyl benzonate, linalool, benzyl alcohol, benzyl acetate, methyl anthranilate and indole [32]. Among these, α-farnesene derived from Senecio flammeus has displayed anti-inflammatory activity against cotton pellet-induced granu- [33].…”

Section: Discussionmentioning

confidence: 99%

Tea Consumption Is Associated with Decreased Disease Activity of Rheumatoid Arthritis in a Real-World, Large-Scale Study

Jin¹,

Li²,

Gan³

et al. 2020

Ann Nutr Metab

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Introduction: The role of tea consumption on rheumatoid arthritis (RA) has been studied in recent years, but no clear conclusion has been drawn as a result of small sample size of the studies or the fact that only in vitro studies have been performed. Objectives: The aim of this study was to explore the possible association of tea consumption with RA through a large-scale, real-world study. Methods: A total of 733 RA patients were investigated from June to December, 2016. The disease activity of RA was assessed according to disease activity score 28-erythrocyte sedimentation rate. The amount and types of tea consumption were recorded by on-site self-administered questionnaires. Logistic regression models were applied to analyze the correlation between tea consumption and disease activity, adjusting for demographics, clinical and laboratory factors. Results: There was an inverse association between tea consumption and disease activity in RA patients (OR 0.66, 95% CI 0.46–0.94). Compared with non-tea drinkers, a higher-intake of tea (>750 mL/day) was associated with lower disease activity of RA (OR 0.39, 95% CI 0.19–0.79), but not low-intake (≤750 mL/day; OR 0.83, 95% CI 0.42–1.63). A significant dose-response association was found between the amount of tea consumption and disease activity (p for trend <0.01). Further hierarchical regression analysis showed that such inverse associations were mainly present in female patients (p = 0.004), non-smokers (p = 0.01) or elders (≥60 years; p = 0.01). Conclusion: Tea consumption is associated with decreased disease activity of RA, suggesting the potential beneficial effect of tea in the disease.

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Section: Discussionmentioning

confidence: 99%

Tea Consumption Is Associated with Decreased Disease Activity of Rheumatoid Arthritis in a Real-World, Large-Scale Study

Jin¹,

Li²,

Gan³

et al. 2020

Ann Nutr Metab

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“…10-fold higher in mycorrhizal WT roots sampled at 50 dpi. This gene could have positively impacted the mycorrhizal process via its negative influence on methyl salicylate synthesis (Bera, Mukherjee & Mitra, 2017). Likewise, the ca.…”

Section: Ion Identitymentioning

confidence: 99%

“…This was consistent with the fact that this gene codes for the critical regulatory enzyme of the plastidial methyl-erythritol-4-phosphate isoprenoid biosynthetic pathway leading to the generation, among many others, of C13-C14 apocarotenoid precursors. The BENZYL ALCOHOL ACETYLTRANSFERASE (BEAT) gene, coding for an enzyme known to participate in synthesis of scent volatiles via benzenoid metabolic pathways (Bera, Mukherjee & Mitra, 2017), was also induced only in mycorrhizal WT roots. In contrast, the FARNESYL-DIPHOSPHATE SYNTHASE1 (FPS1) gene, coding for a branch point enzyme of the isoprenoid pathway leading to both sesquiterpenes and sterols, and also considered to be a distal regulatory point of 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGR; Szkopiñska, 2000), remained unchanged or was repressed at late colonization stages in mycorrhizal WT roots.…”

Section: Secondary Metabolism Biosynthetic Genesmentioning

confidence: 99%

Distinct gene expression and secondary metabolite profiles insuppressor of prosystemin-mediated responses2 (spr2)tomato mutants having impaired mycorrhizal colonization

Casarrubias-Castillo

Montero-Vargas

Dabdoub-González

et al. 2020

PeerJ

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Arbuscular mycorrhizal fungi (AMF) colonization, sampled at 32-50 days post-inoculation (dpi), was significantly reduced in suppressor of prosysteminmediated responses2 (spr2) mutant tomato plants impaired in the ω−3 FATTY ACID DESATURASE7 (FAD7) gene that limits the generation of linolenic acid and, consequently, the wound-responsive jasmonic acid (JA) burst. Contrary to wild-type (WT) plants, JA levels in root and leaves of spr2 mutants remained unchanged in response to AMF colonization, further supporting its regulatory role in the AM symbiosis. Decreased AMF colonization in spr2 plants was also linked to alterations associated with a disrupted FAD7 function, such as enhanced salicylic acid (SA) levels and SA-related defense gene expression and a reduction in fatty acid content in both mycorrhizal spr2 roots and leaves. Transcriptomic data revealed that lower mycorrhizal colonization efficiency in spr2 mutants coincided with the modified expression of key genes controlling gibberellin and ethylene signaling, brassinosteroid, ethylene, apocarotenoid and phenylpropanoid synthesis, and the wound response. Targeted metabolomic analysis, performed at 45 dpi, revealed augmented contents of L-threonic acid and DL-malic acid in colonized spr2 roots which suggested unfavorable conditions for AMF colonization. Additionally, timeand genotype-dependent changes in root steroid glycoalkaloid levels, including tomatine, suggested that these metabolites might positively regulate the AM symbiosis in tomato. Untargeted metabolomic analysis demonstrated that the tomato root metabolomes were distinctly affected by genotype, mycorrhizal colonization and colonization time. In conclusion, reduced AMF colonization efficiency in spr2 mutants is probably caused by multiple and interconnected JA-dependent and independent gene expression and metabolomic alterations.How to cite this article Casarrubias-Castillo K, Montero-Vargas JM, Dabdoub-González N, Winkler R, Martinez-Gallardo NA, Zañudo-Hernández J, Avilés-Arnaut H, Délano-Frier JP. 2020. Distinct gene expression and secondary metabolite profiles in suppressor of prosystemin-mediated responses2 (spr2) tomato mutants having impaired mycorrhizal colonization. PeerJ 8:e8888 . 2012. Loss of function of fatty acid desaturase 7 in tomato enhances basal aphid resistance in a salicylate-dependent manner.

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Section: Discernable Biochemical and Transcriptional Changes Occur Inmentioning

confidence: 99%

“…This was consistent with the fact that this gene codes for the critical regulatory enzyme of the plastidial methyl-erythritol-4-phosphate isoprenoid biosynthetic pathway leading to the generation, among many others, of C13-C14 apocarotenoid precursors. The BENZYL ALCOHOL ACETYLTRANSFERASE (BEAT) gene, coding for an enzyme known to participate in synthesis of scent volatiles via benzenoid metabolic pathways (Bera et al, 2017), was also induced only in mycorrhizal WT roots. In contrast, the FARNESYL-DIPHOSPHATE SYNTHASE1 (FPS1) gene, coding for a branch point enzyme of the isoprenoid pathway leading to both sesquiterpenes and sterols, and also considered to be a distal regulatory point of 3-hydroxy-3-methylglutaryl-coenzyme A reductase (HMGR; Szkopiñska, 2000), remained unchanged or was repressed at late colonization stages in mycorrhizal WT roots.…”

Section: Manuscript To Be Reviewedmentioning

confidence: 99%

Peer Review #2 of "Distinct gene expression and secondary metabolite profiles in suppressor of prosystemin-mediated responses2 (spr2) tomato mutants having impaired mycorrhizal colonization (v0.1)"

2020

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Arbuscular mycorrhizal fungi (AMF) colonization, sampled at 32 to 50 days post-inoculation (dpi), was significantly reduced in Suppressor of prosystemin-mediated responses2 (spr2) mutant tomato plants impaired in the ω-3 FATTY ACID DESATURASE7 (FAD7) gene that limits the generation of linolenic acid and, consequently, the wound-responsive jasmonic acid (JA) burst. Contrary to wild-type (WT) plants, JA levels in root and leaves of spr2 mutants remained unchanged in response to AMF colonization, further supporting its regulatory role in the AM symbiosis. Decreased AMF colonization in spr2 plants was also linked to alterations associated with a disrupted FAD7 function, such as enhanced salicylic acid (SA) levels and SA-related defense gene expression and a reduction in fatty acid content in both mycorrhizal spr2 roots and leaves. Transcriptomic data revealed that lower mycorrhizal colonization efficiency in spr2 mutants coincided with the modified expression of key genes controlling gibberellin and ethylene signaling, brassinosteroid, ethylene, apocarotenoid and phenylpropanoid synthesis, and the wound response. Targeted metabolomic analysis, performed at 45 dpi, revealed augmented contents of L-threonic acid and DL-malic acid in colonized spr2 roots which suggested unfavorable conditions for AMF colonization. Additionally, time-and genotype-dependent changes in root steroid glycoalkaloid levels, including tomatine, suggested that these metabolites might positively regulate the AM symbiosis in tomato. Untargeted metabolomic analysis demonstrated that the tomato root metabolomes were distinctly affected by genotype, mycorrhizal colonization and colonization time. In conclusion, reduced AMF colonization efficiency in spr2 mutants is probably caused by multiple and interconnected JA-dependent and independent gene expression and metabolomic alterations.

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Enzymatic production and emission of floral scent volatiles in Jasminum sambac

Cited by 58 publications

References 35 publications

Tea Consumption Is Associated with Decreased Disease Activity of Rheumatoid Arthritis in a Real-World, Large-Scale Study

Tea Consumption Is Associated with Decreased Disease Activity of Rheumatoid Arthritis in a Real-World, Large-Scale Study

Distinct gene expression and secondary metabolite profiles insuppressor of prosystemin-mediated responses2 (spr2)tomato mutants having impaired mycorrhizal colonization

Peer Review #2 of "Distinct gene expression and secondary metabolite profiles in suppressor of prosystemin-mediated responses2 (spr2) tomato mutants having impaired mycorrhizal colonization (v0.1)"

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