ArticleFrontiers in plant science2013
Plant phloem sterol content: forms, putative functions, and implications for phloem-feeding insects.
Article in Frontiers in plant science, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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Who cites it
19 citing papers in PubMed, 41 citations in OpenAlex.
- Duckweeds: Model organisms for research on plant sterols and steroids.Plant biology (Stuttgart, Germany) · 2026Review
- Analysis of Phloem Sterols in Plants using EDTA-Facilitated Exudation and GC-MS.Methods in molecular biology (Clifton, N.J.) · 2026Article
- Transcriptome Analysis of the Fat Body of the Maize Pest Delphacodes kuscheli (Hemiptera: Delphacidae) Reveals Essential Roles of Fungal Endosymbionts.Microbial ecology · 2025Article
- Genetic mapping and validation of QTL for whitefly resistance in cassava (Manihot esculenta Crantz).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Article
- Loss of Sterol Biosynthesis in Economically Important Plant Pests and Pathogens: A Review of a Potential Target for Pest Control.Biomolecules · 2024Review
- Sterylglucosides in Fungi.Journal of fungi (Basel, Switzerland) · 2022Review
- Effects of impaired steryl ester biosynthesis on tomato growth and developmental processes.Frontiers in plant science · 2022Article
- Extract from the Marine SeaweedMolecules (Basel, Switzerland) · 2021Article
- Changes in the Plant β-Sitosterol/Stigmasterol Ratio Caused by the Plant Parasitic NematodePlants (Basel, Switzerland) · 2021Article
- The Sterol Trafficking Pathway inFrontiers in plant science · 2021Article
- Microbiome responses during virulence adaptation by a phloem-feeding insect to resistant near-isogenic rice lines.Ecology and evolution · 2019Article
- Article
- Pro-Apoptotic Activity of French PolynesianMarine drugs · 2018Article
- A plant virus (BYDV) promotes trophic facilitation in aphids on wheat.Scientific reports · 2018Article
- Identification and Characterization of Sterol Acyltransferases Responsible for Steryl Ester Biosynthesis in Tomato.Frontiers in plant science · 2018Article
- Tomato UDP-Glucose Sterol Glycosyltransferases: A Family of Developmental and Stress Regulated Genes that Encode Cytosolic and Membrane-Associated Forms of the Enzyme.Frontiers in plant science · 2017Article
- Phloem Proteomics Reveals New Lipid-Binding Proteins with a Putative Role in Lipid-Mediated Signaling.Frontiers in plant science · 2016Article
- Article
- Phloem: the integrative avenue for resource distribution, signaling, and defense.Frontiers in plant science · 2013Article
Corrections and comments
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
All eukaryotes contain sterols, which serve as structural components in cell membranes, and as precursors for important hormones. Plant vegetative tissues are known to contain mixtures of sterols, but very little is known about the sterol composition of phloem. Plants are food for many animals, but plant-feeding arthropods (including phloem-feeding insets) are unique among animals in that they have lost the ability to synthesize sterols, and must therefore acquire these essential nutrients from their food, or via endosymbionts. Our paper starts by providing a very brief overview of variation in plant sterol content, and how different sterols can affect insect herbivores, including those specializing on phloem. We then describe an experiment, where we bulk collected phloem sap exudate from bean and tobacco, and analyzed its sterol content. This approach revealed two significant observations concerning phloem sterols. First, the phloem exudate from each plant was found to contain sterols in three different fractions - free sterols, sterols conjugated to lipids (acylated), and sterols conjugated to carbohydrates (glycosylated). Second, for both plants, cholesterol was identified as the dominant sterol in each phloem exudate fraction; the remaining sterols in each fraction were a mixture of common phytosterols. We discuss our phloem exudate sterol profiles in a plant physiology/biochemistry context, and how it relates to the nutritional physiology/ecology of phloem-feeding insects. We close by proposing important next steps that will advance our knowledge concerning plant phloem sterol biology, and how phloem-sterol content might affect phloem-feeding insects.
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