Cited by 83Plant Molecular Biology ResearchDevelopmental Biology and Gene RegulationPlant Parasitism and Resistance

Gene expression patterns in seed plant shoot meristems and leaves: homoplasy or homology?

Floyd, Sandra K., Bowman, John L.·2010·Journal of Plant Research

Abstract

The fossil record reveals that seed plant leaves evolved from ancestral lateral branch systems. Over time, the lateral branch systems evolved to become determinate, planar and eventually laminar. Considering their evolutionary histories, it is instructive to compare the developmental genetics of shoot apical meristems (SAMs) and leaves in extant seed plants. Genetic experiments in model angiosperm species have assigned functions of meristem maintenance, specification of stem cell identity, boundary formation, polarity establishment and primordium initiation to specific genes. Investigation of roles of the same or homologous genes during leaf development has revealed strikingly similar functions in leaves compared to SAMs. Specifically, the marginal blastozone that characterizes many angiosperm leaves appears to function in a manner mechanistically similar to the SAM. We argue here that the similarities may be homologous due to descent from ancestral roles in an ancestral shoot system. Molecular aspects of SAM and leaf development in gymnosperms is largely neglected and could provide insight into seed plant leaf evolution.

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Crossref · 10.1007/s10265-009-0256-2

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  • Boundary zones between the meristem and leaf primordia and boundaries between leaflets are homologous structures resulting from descent from an ancestral shoot system.

    “supporting the view that these are homologous structures as a result of descent from an ancestral shoot system (Floyd & Bowman, 2010)”

    From <i>Divide et impera</i>: boundaries shape the plant body and initiate new meristems (2016) · cites this paper as Floyd & Bowman, 2010

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Authors
Floyd, S. K., & Bowman, J. L.
Affiliations
Monash University (AU)
Corresponding author
Bowman, John L.
Venue
Journal of Plant Research
Published
2009-09-26
Volume
123
Issue
1
Pages
43-55
ISSN
  • 0918-9440 (ISSN-L)
  • 1618-0860
OpenAlex
W2012654528
Cited by
82
References
116
Citations by year
2026: 3 · 2024: 5 · 2023: 2 · 2022: 3 · 2021: 7 · 2020: 6 · 2019: 1 · 2018: 6 · 2017: 4 · 2016: 6 · 2015: 3 · 2014: 5 · 2013: 6 · 2012: 10
FWCI
9.34
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Plant Research (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Parasitism and Resistance
Keywords
shoot apical meristem, leaf development, meristem maintenance, stem cell identity, boundary formation, gymnosperms, flowering plants, gene expression patterns
MeSH terms
Biological Evolution, Genes, Homeobox, Models, Biological, Morphogenesis, Plant Growth Regulators, Genes, Plant, Gene Expression Regulation, Plant, Plant Leaves, Meristem, Body Patterning, Magnoliopsida, Cycadopsida

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