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The Plant Journal
Article . 2025 . Peer-reviewed
License: CC BY
Data sources: Crossref
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PubMed Central
Other literature type . 2025
License: CC BY
Data sources: PubMed Central
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Phenolic metabolism in Sarcandra glabra is mediated by distinct BAHD hydroxycinnamoyltransferases

Authors: Paul Bömeke; Maike Petersen;

Phenolic metabolism in Sarcandra glabra is mediated by distinct BAHD hydroxycinnamoyltransferases

Abstract

SUMMARY Sarcandra glabra (Chloranthaceae) has an elaborate phenolic metabolism, encompassing various hydroxycinnamic acid esters. This may imply that multiple hydroxycinnamoyltransferases are involved in establishing this spectrum of natural compounds. Five coding sequences from S. glabra , belonging to the superfamily of BAHD acyltransferases, have been amplified from S. glabra cDNA, and the proteins were expressed in Escherichia coli . By assaying the proteins biochemically, the main substrates of these enzymes were identified as p ‐coumaroyl‐ and caffeoyl‐CoA as donor substrates together with varying acceptor substrates. SgHST mainly forms p ‐coumaroyl‐ and caffeoylshikimic acid, but also the corresponding quinic acid esters as well as amides with 3‐ and 5‐hydroxyanthranilic acids. SgHQT1 predominantly catalyzes the formation of p ‐coumaroyl‐ and caffeoyl‐5‐ O ‐quinic acid, while SgHQT2 correspondingly forms p ‐coumaroyl‐ and caffeoyl‐4‐ O ‐quinic acid. To our knowledge, this is the first characterized enzyme forming cryptochlorogenic acid and its precursor p ‐coumaroyl‐4‐ O ‐quinic acid. SgRAS synthesizes rosmarinic acid and its precursors (caffeoyl‐4′‐hydroxyphenyllactic, p ‐coumaroyl‐4′‐hydroxyphenyllactic, p ‐coumaroyl‐3′,4′‐dihydroxyphenyllactic acids) as well as amides with aromatic d ‐amino acids. No substrates could be identified for the fifth sequence, SgHCT‐F, which phylogenetically groups with benzyl alcohol O ‐benzoyltransferases. All enzymes, except SgHCT‐F, were fully kinetically characterized, and their expression in different tissues of S. glabra was assessed.

Related Organizations
Keywords

Magnoliopsida, Phenols, Coumaric Acids, Gene Expression Regulation, Plant, Quinic Acid, Original Article, Acyl Coenzyme A, Acyltransferases, Phylogeny, Plant Proteins, Substrate Specificity

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
4
Top 10%
Average
Average
Green
hybrid