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Evidence for host-microbiome co-evolution in apple.

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This summary is machine-generated.

Domestication reshaped the plant microbiome, with domesticated apples (M. domestica) showing increased microbial diversity compared to wild relatives. This study reveals microbiome introgression and co-evolution between apple species and their microbes.

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Area of Science:

  • Microbiology
  • Plant Science
  • Evolutionary Biology

Background:

  • Plants and microorganisms engage in complex evolutionary relationships.
  • The impact of plant domestication and phylogeny on host-microbiome dynamics remains largely unexplored.

Purpose of the Study:

  • To investigate how domestication and plant lineage influence the endophytic microbiome composition in 11 Malus species.
  • To understand the co-evolutionary dynamics between apple species and their associated microbes.

Main Methods:

  • Comparative analysis of endophytic microbiome composition across domesticated apple (M. domestica), wild apple progenitors, and other wild Malus species.
  • Utilized a community-wide Bayesian model to assess microbiome introgression.
  • Correlated microbiome composition with the evolutionary distance of Malus species.

Main Results:

  • Domesticated apple (M. domestica) and its progenitors exhibited higher microbial diversity and abundance than wild Malus species.
  • The endophytic microbiome of domesticated apple is an admixture of its wild progenitors, with significant bacterial microbiome introgression.
  • A strong correlation was found between the evolutionary distance of Malus species and their microbiome composition.

Conclusions:

  • Domestication significantly impacts the plant microbiome, leading to introgression and co-evolutionary shifts.
  • Findings support a co-evolutionary relationship between Malus species and their endophytic microbiomes during domestication.
  • This research offers crucial insights for future plant breeding programs and evolutionary studies of plant-microbe interactions.