ReviewFrontiers in plant science2022
Why Do Heterosporous Plants Have So Few Chromosomes?
Review in Frontiers in plant science, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
6 citing papers in PubMed.
- Divergent trajectories of genome architecture and chromosome evolution in ferns and angiosperms.The New phytologist · 2026Article
- Genomics is modifying our concepts of evolution in homosporous and heterosporous vascular plants.American journal of botany · 2026Review
- Chromosome Numbers and Reproductive Life Cycles in Green Plants: A Phylotranscriptomic Perspective.Plant direct · 2025Article
- Centromere drive may propel the evolution of chromosome and genome size in plants.Annals of botany · 2024Article
- Extraordinary preservation of gene collinearity over three hundred million years revealed in homosporous lycophytes.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Unfurling an improved method for visualizing mitotic chromosomes in ferns.Applications in plant sciencesArticle
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The mechanisms controlling chromosome number, size, and shape, and the relationship of these traits to genome size, remain some of the least understood aspects of genome evolution. Across vascular plants, there is a striking disparity in chromosome number between homosporous and heterosporous lineages. Homosporous plants (comprising most ferns and some lycophytes) have high chromosome numbers compared to heterosporous lineages (some ferns and lycophytes and all seed plants). Many studies have investigated why homosporous plants have so many chromosomes. However, homospory is the ancestral condition from which heterospory has been derived several times. Following this phylogenetic perspective, a more appropriate question to ask is why heterosporous plants have so few chromosomes. Here, we review life history differences between heterosporous and homosporous plants, previous work on chromosome number and genome size in each lineage, known mechanisms of genome downsizing and chromosomal rearrangements, and conclude with future prospects for comparative research.
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