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Browsing by Author "Mhlongo, MI"

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Analyses of chlorogenic acids and related cinnamic acid derivatives from Nicotiana tabacum tissues with the aid of UPLC-QTOF-MS/MS based on the in-source collision-induced dissociation method

Author: Ncube, EN ; Mhlongo, MI ; Piater, LA ; Steenkamp, PA ; Dubery, IA ; Madala, NE Date: Nov 2014 Chlorogenic acids (CGAs) are a class of phytochemicals that are formed as esters between different derivatives of cinnamic acid and quinic acid molecules. In plants, accumulation of these compounds has been linked to several physiological ... Read more
Metabolomic fingerprinting of primed tobacco cells provide the first evidence for the biological origin of cis-chlorogenic acid

Author: Mhlongo, MI ; Piater, LA ; Steenkamp, Paul A ; Madala, NE ; Dubery, IA Date: Jan 2015 Previous studies suggest that only transisomers of chlorogenic acid (CGA) are naturally produced. Cis-isomers have been noted in some plant tissues exposed to different mechanical processes as well as untreated tobacco leaves exposed to ... Read more
Profiling of altered metabolomic states in Nicotiana tabacum cells induced by priming agents

Author: Mhlongo, MI ; Steenkamp, Paul A ; Piater, LA ; Madala, NE ; Dubery, IA Date: Oct 2016 Metabolomics has developed into a valuable tool for advancing our understanding of plant metabolism. Plant innate immune defenses can be activated and enhanced so that, subsequent to being pre-sensitized, plants are able to launch a stronger ... Read more
Untargeted metabolomics analysis reveals dynamic changes in azelaic acid- and salicylic acid derivatives in LPS-treated Nicotiana tabacum cells

Author: Mhlongo, MI ; Tugizimana, F ; Piater, LA ; Steenkamp, Paul A ; Madala, NE ; Dubery, IA Date: Jan 2017 To counteract biotic stress factors, plants employ multilayered defense mechanisms responsive to pathogen-derived elicitor molecules, and regulated by different phytohormones and signaling molecules. Here, lipopolysaccharide (LPS), a ... Read more

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Browsing by Author "Mhlongo, MI"

Browsing by Author "Mhlongo, MI"

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