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Genetic basis of alkaloid divergence in the Solanaceae.

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Updated: May 10, 2025

Author Spotlight: Discovering New Alkaloids in Plants with Advanced Mass Spectrometry Techniques
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Alkaloid evolution in the Solanaceae.

Pablo A Pérez-Mesa1, Federico Roda2

  • 1Max Planck Tandem Group GEME, Facultad de Ciencias, Universidad Nacional de Colombia, Bogotá, 11321, Colombia; Biology Department, Universidad Nacional de Colombia, Bogotá, Colombia.

Current Opinion in Plant Biology
|April 26, 2025
PubMed
Summary
This summary is machine-generated.

The Solanaceae family

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Area of Science:

  • Plant biochemistry
  • Evolutionary biology
  • Genomics

Background:

  • Alkaloids are vital nitrogen-containing plant metabolites involved in biotic interactions.
  • The Solanaceae family is a model for studying alkaloid evolution, producing diverse types like nicotinoids, tropane alkaloids (TAs), steroidal glycoalkaloids (SGAs), and capsaicinoids.
  • Recent multi-omics and comparative genomics studies offer insights into alkaloid diversification.

Purpose of the Study:

  • To review the genetic and evolutionary mechanisms driving alkaloid diversification in the Solanaceae family.
  • To explore the roles of ecological factors and human influence on alkaloid evolution.
  • To highlight the interplay between genetics, ecology, and human impact.

Main Methods:

  • Review of multi-omics and comparative genomics studies.
  • Analysis of evolutionary processes such as genome duplications and introgressions.
  • Examination of biosynthetic gene clusters (BGCs) and gene duplication events.

Main Results:

  • Alkaloid profiles are shaped by herbivore/pathogen coevolution, leading to diversification and reduction.
  • Genome evolution (duplications, rearrangements, introgressions) drives new alkaloid pathways and metabolic adaptations.
  • Both convergent and divergent evolution of alkaloids occur, with independent origins in different lineages.
  • Biosynthetic gene clusters (BGCs) and gene duplication are key drivers of alkaloid diversity.
  • Human domestication has altered crop alkaloid profiles for pest resistance and flavor.

Conclusions:

  • Alkaloid evolution in Solanaceae is a dynamic process influenced by genetics, ecology, and human activity.
  • Understanding these evolutionary pathways has implications for plant defense, agriculture, and human health.
  • The study underscores the complex interplay shaping plant secondary metabolism.