Acropetal and basipetal cardenolide transport in Erysimum cheiranthoides (wormseed wallflower).
Brassicaceae
Cardenolide
Cardiac glycoside
Crosses
Erysimum cheiranthoides
Grafting
Transport
Wormseed wallflower
Journal
Phytochemistry
ISSN: 1873-3700
Titre abrégé: Phytochemistry
Pays: England
ID NLM: 0151434
Informations de publication
Date de publication:
Dec 2021
Dec 2021
Historique:
received:
05
08
2021
revised:
20
09
2021
accepted:
23
09
2021
pubmed:
6
10
2021
medline:
16
11
2021
entrez:
5
10
2021
Statut:
ppublish
Résumé
Plant specialized metabolites are often subject to within-plant transport and have tissue-specific distribution patterns. Among plants in the Brassicaceae, the genus Erysimum is unique in producing not only glucosinolates but also cardenolides. Ten cardenolides were detected with varying abundance in different tissues of Erysimum cheiranthoides L (Brassicaceae; wormseed wallflower). As is predicted by the optimal defense theory, cardenolides were most abundant in young leaves and reproductive tissues. The lowest concentrations were observed in senescing leaves and roots. Crosses between wildtype E. cheiranthoides and a mutant line with an altered cardenolide profile showed that the seed cardenolide phenotype is determined entirely by the maternal genotype. Prior to the development of the first true leaves, seedling cotyledons also had the maternal cardenolide profile. Hypocotyl grafting experiments showed that the root cardenolide profile is determined entirely by the aboveground plant genotype. In further grafting experiments, there was no evidence of cardenolide transport into the leaves, but a mixed cardenolide profile was observed in the stems and inflorescences of plants that had been grafted at vegetative and flowering growth stages, respectively. Together, these results indicate that E. cheiranthoides leaves are a site of cardenolide biosynthesis.
Identifiants
pubmed: 34610557
pii: S0031-9422(21)00314-9
doi: 10.1016/j.phytochem.2021.112965
pmc: PMC8655687
mid: NIHMS1745553
pii:
doi:
Substances chimiques
Cardenolides
0
Glucosinolates
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
112965Subventions
Organisme : NIGMS NIH HHS
ID : T32 GM008500
Pays : United States
Organisme : NIGMS NIH HHS
ID : T32 GM138826
Pays : United States
Informations de copyright
Copyright © 2021 Elsevier Ltd. All rights reserved.
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