Regulation of Tomato Specialised Metabolism after Establishment of Symbiosis with the Endophytic Fungus Serendipita indica

Specialised metabolites produced during plant-fungal associations often define how symbiosis between the plant and the fungus proceeds. They also play a role in the establishment of additional interactions between the symbionts and other organisms present in the niche. However, specialised metabolis...

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Bibliographic Details
Published in:Microorganisms (Basel) 2022-01, Vol.10 (1), p.194
Main Authors: Ntana, Fani, Johnson, Sean R, Hamberger, Björn, Jensen, Birgit, Jørgensen, Hans J L, Collinge, David B
Format: Article
Language:English
Subjects:
Apoptosis
Biosynthesis
Chlamydospores
endophyte
Endophytes
Flavonoids
Fungi
Gene expression
Glycoalkaloids
Host plants
Leaves
Metabolism
Metabolites
Ontology
phenolics
Piriformospora indica
Plant roots
Plants
Polyacetylene
polyacetylenes
Roots
secondary metabolism
Seedlings
Serendipita indica
Simulation
Solanum lycopersicum
Symbionts
Symbiosis
Terpenes
Tomatoes
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Summary:Specialised metabolites produced during plant-fungal associations often define how symbiosis between the plant and the fungus proceeds. They also play a role in the establishment of additional interactions between the symbionts and other organisms present in the niche. However, specialised metabolism and its products are sometimes overlooked when studying plant-microbe interactions. This limits our understanding of the specific symbiotic associations and potentially future perspectives of their application in agriculture. In this study, we used the interaction between the root endophyte and tomato ( ) plants to explore how specialised metabolism of the host plant is regulated upon a mutualistic symbiotic association. To do so, tomato seedlings were inoculated with chlamydospores and subjected to RNAseq analysis. Gene expression of the main tomato specialised metabolism pathways was compared between roots and leaves of endophyte-colonised plants and tissues of endophyte-free plants. colonisation resulted in a strong transcriptional response in the leaves of colonised plants. Furthermore, the presence of the fungus in plant roots appears to induce expression of genes involved in the biosynthesis of lignin-derived compounds, polyacetylenes, and specific terpenes in both roots and leaves, whereas pathways producing glycoalkaloids and flavonoids were expressed in lower or basal levels.
ISSN:2076-2607
2076-2607
DOI:10.3390/microorganisms10010194