Abiotic factors during a one-year vegetation period affect sage phenolic metabolites, antioxidants and antimicrobials

Variations in the morphological and chemical composition of the rhizomes of Polygonatum species based on a common garden experiment

“…Overall, the agronomic traits of different provenances of P. cyrtonema were related to the location and temperature, whereas the quality traits were strongly related to the precipitation of the provenance environment. Temperature and rainfall affect the accumulation of effective substances in Salvia officinalis L., thus affecting its efficacy ( Generalić Mekinić et al, 2019 ). Precipitation affects the accumulation of chemical substances in raw coffee beans, thus affecting their flavor quality ( Mendes et al, 2022 ).…”

Effect of γ-aminobutyric Acid on Phenolics Metabolism in Barley Seedlings under Low NaCl Treatment

“…Phenolics are mainly distributed in the cortex of plants, combined with cellulose, hemicellulose, and other non-starch polysaccharides [12], which play a critical role in resisting adversity and protecting plants from abiotic and biotic stress [13]. The synthesis of phenolics is closely related to the growth of plants.…”

“…Among these, PAL is a key bridge connecting primary metabolism and phenylpropane metabolism [11]. Plants accumulate secondary metabolites such as phenolics in response to salt, low oxygen, low temperature, low pH, mechanical stimulation, heat shock, pathogenic microorganism infection, and so on [12]. The mechanism of phenolics accumulation in plants has been studied recently, mainly in relation to the activities and gene expressions of key enzymes involved in the phenolics synthesis pathway [13].…”

Elicitation of Stress-Induced Phenolic Metabolites for Antimicrobial Applications against Foodborne Human Bacterial Pathogens

“…More specifically, these stress-inducible phenolics display antibacterial activity against a number of human bacterial pathogens such as Vibrio cholerae , Streptococcus mutans , C. jejuni , E. coli , Bacillus cereus , Helicobacter pylori , Staphylococcus aureus , Salmonella , Clostridium perfringens , L. monocytogenes , Pseudomonas aeruginosa, and Mycobacterium tuberculosis [ 19 , 33 , 40 , 41 ]. Extracts of a variety of medicinal plants, herbs, spices, fruits, and plant-based foods have been analyzed for their antimicrobial activity against human bacterial pathogens ( Table 1 ) [ 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 ]. Likewise, various pure phenolic compounds have also been analyzed for their antimicrobial activity against human bacterial pathogens ( Table 2 ) [ 35 , 42 , 55 , 56 , 57 , 58 ].…”

“…In another study, extracts of sage harvested throughout the year showed antimicrobial activity against both Gram-negative ( E.coli , S. infantis ) and Gram-positive ( B. cereus , S. aureus ) bacteria; however, the samples collected in summer were most effective against Gram-negative bacteria when compared to the sample harvested in autumn-winter period, which indicated the impact of seasonal variations on the content and function of stress-inducible phenolic antimicrobials of culinary and medicinal herbs [ 49 ]. In both of these studies, the Gram-positive bacterial pathogens were more susceptible to the antimicrobial activity of the sage extracts, as evident by the overall lower MIC, when compared to the Gram-negative bacteria, which had an overall higher MIC [ 48 , 49 ]. The reason for the difference in susceptibility of Gram-positive and Gram-negative bacteria to the antimicrobial activity of plant phenolics could be due to morphological differences in their cell wall structure.…”