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Growth Patterns in Seedling Roots of the Pincushion Cactus Reveal Trends of Intra- and Inter-Specific Variation. | LitMetric

AI Article Synopsis

  • The study explores genetic mechanisms behind root development in cacti, comparing variations in root architecture across different populations and species.* -
  • It details findings of how root architecture variation at the intra-specific level reflects similar patterns at the inter-specific level among closely related species.* -
  • The results suggest that the evolution of root architecture in cacti can be understood as a cumulative effect of smaller, gradual changes over time, linking microevolution to macroevolution.*

Article Abstract

Genetic mechanisms controlling root development are well-understood in plant model species, and emerging frontier research is currently dissecting how some of these mechanisms control root development in cacti. Here we show the patterns of root architecture development in a gradient of divergent lineages, from populations to species in . First, we show the patterns of variation in natural variants of the species . Then we compare this variation to closely related species within the Series in (diverging for the last 2.1 million years) in which is inserted. Finally, we compared these patterns of variation to what is found in a set of species belonging to different Series (diverging for the last 8 million years). When plants were grown in controlled environments, we found that the variation in root architecture observed at the intra-specific level, partially recapitulates the variation observed at the inter-specific level. These phenotypic outcomes at different evolutionary time-scales can be interpreted as macroevolution being the cumulative outcome of microevolutionary phenotypic divergence, such as the one observed in accessions and species.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8531529PMC
http://dx.doi.org/10.3389/fpls.2021.750623DOI Listing

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