The role of abiotic and biotic factors in glucosinolate changes in Brassicales

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dc.identifier.uri Hornbacher, Johann eng 2022-11-11T09:54:56Z 2022-11-11T09:54:56Z 2022
dc.identifier.citation Hornbacher, Johann: The role of abiotic and biotic factors in glucosinolate changes in Brassicales. Hannover : Gottfried Wilhelm Leibniz Universität, Diss., 2022, XIII, 161 S., DOI: eng
dc.description.abstract In this work the glucosinolate (GSL) contents in edible plants and the response of GSL contents to biotic and abiotic stress were analyzed. Fluctuations in GSL contents in Nasturtium officinale were determined in the course of a growing season and in administered N. officinale during a human trial. Results showed only minor changes in GSL contents, which are similar during the development of N. officinale and cultivation of different batches. Hydrolysis of GSLs was analyzed in Moringa oleifera and potential breakdown products were discussed on the basis of structurally related GSLs. Glucosinolate changes were also investigated as a result of biotic stress. Higher contents of gluconasturtiin were observed in Brassica napus infected with Verticillium longisporum. Direct growth inhibitory aspects of gluconasturtiin-derived breakdown products were discussed. Infection of B. napus with Plasmodiophora brassicae on the other hand resulted in lower contents of GSLs. Regulation of gluconasturtiin biosynthesis by more virulent pathotypes might be the cause for differing contents between plants infected with pathotypes differing in their virulence. Furthermore, the influence of abiotic stress on GSL contents in plants was analyzed in this study. Rhythmic GSL fluctuations were observed in B. napus grown in light/dark and continuous light conditions and the influence of the expression of genes involved in biosynthesis and breakdown of GSLs were discussed. The influence of salt stress on Lepidium latifolium revealed significantly higher contents of the aliphatic GSL sinigrin, which might be involved in water homeostasis in the plant. Lastly, it was observed that drought stress resulted in higher contents of the indolic GSL glucobrassicin (GB) in Arabidopsis thaliana. The investigation of deuterium incorporation into GB revealed higher biosynthesis of GB during drought stress. The expression analysis of genes responsible for breakdown of GSLs and synthesis of indole-3-acetic acid (IAA) strongly suggests glucobrassicin as a source of IAA in drought-stressed plants. eng
dc.language.iso eng eng
dc.publisher Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
dc.rights Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden. eng
dc.subject abiotic stress eng
dc.subject biotic stress eng
dc.subject glucosinolate turnover eng
dc.subject auxin synthesis eng
dc.subject pathogens eng
dc.subject human nutrition eng
dc.subject Nasturtium officinale eng
dc.subject Brassica napus eng
dc.subject Moringa oleifera eng
dc.subject Lepidium latifolium eng
dc.subject Arabidopsis thaliana eng
dc.subject Glucosinolate ger
dc.subject Abiotischer Stress ger
dc.subject Biotischer Stress ger
dc.subject Brassicales ger
dc.subject Auxin ger
dc.subject Glucobrassicin ger
dc.subject Humanernährung ger
dc.subject.ddc 570 | Biowissenschaften, Biologie eng
dc.title The role of abiotic and biotic factors in glucosinolate changes in Brassicales eng
dc.type DoctoralThesis eng
dc.type Text eng
dc.relation.doi 10.5073/JABFQ.2019.092.032
dc.relation.doi 10.3390/foods10081774
dc.relation.doi 10.5073/JABFQ.2020.093.032
dc.relation.doi 1227. DOI: 10.3390/agronomy10091227
dc.relation.doi 10.3390/pathogens10050563
dc.relation.doi 10.1007/s12374-019-0143-x
dc.relation.doi 10.1007/978-3-319-56526-2_10, pp. 103-114
dc.relation.doi 1025969. doi: 10.3389/fpls.2022.1025969
dcterms.extent XIII, 161 S. eng
dc.description.version publishedVersion eng
tib.accessRights frei zug�nglich eng

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