https://api.researchmap.jp/fujimotokoichi/published_papers/32565782
type: published papers
id: 32565782
user id: B000003456
display: disclosed
major achievement: false
creator id: B000003456
creator type: myself
created: 2021-05-21T04:53:02Z
modifier id: B000003456
modifier type: myself
modified: 2021-11-16T04:29:24Z
paper title:
  en: Rotation angle of stem cell division plane controls spiral phyllotaxis in mosses.
authors:
  en:
    name: Naoya Kamamoto
  en:
    name: Taishi Tano
  en:
    name: Koichi Fujimoto
  en:
    name: Masaki Shimamura
published paper owner roles: corresponding
description:
  en: The spiral arrangement (phyllotaxis) of leaves is a shared morphology in land plants, and exhibits diversity constrained to the Fibonacci sequence. Phyllotaxis in vascular plants is produced at a multicellular meristem, whereas bryophyte phyllotaxis emerges from a single apical stem cell (AC) that is embedded in a growing tip of the gametophyte. An AC is asymmetrically divided into itself and a single 'merophyte', producing a future leaf and a portion of the stem. Although it has been suggested that the arrangement of merophytes is regulated by a rotation of the division plane of an AC, the quantitative description of the merophyte arrangement and its regulatory mechanism remain unclear. To clarify them, we examined three moss species, Tetraphis pellucida, Physcomitrium patens, and Niphotrichum japonicum, which exhibit 1/3, 2/5, and 3/8 spiral phyllotaxis, respectively. We measured the angle between the centroids of adjacent merophytes relative to the AC centroid on cross-transverse sections. At the outer merophytes, this divergence angle converged to nearly 120[Formula: see text] in T. pellucida, 136[Formula: see text] in N. japonicum, and 141[Formula: see text] in P. patens, which was nearly consistent with phyllotaxis, whereas the divergence angle deviated from the converged angle at the inner merophytes near an AC. A mathematical model, which assumes scaling growth of AC and merophytes and a constant angle of division plane rotation, quantitatively reproduced the sequence of the divergence angles. This model showed that successive relocations of the centroid position of an AC upon its division inevitably result in the transient deviation of the divergence angle. As a result, the converged divergence angle was equal to the rotation angle, predicting that the latter is a major regulator of the spiral phyllotaxis diversity in mosses.
publication date: 2021-05
publication name:
  en: Journal of plant research
volume: 134
number: 3
starting page: 457
ending page: 473
languages: eng
referee: true
published paper type: scientific_journal
is international journal: false
is open access: false
identifiers:
  doi: 10.1007/s10265-021-01298-0
  pm id: 33877466
  research project id: 24558629
  research project id: 24558627
  research project id: 31832413
see also: s10265-021-01298-0
see also: https://www.ncbi.nlm.nih.gov/pubmed/33877466
see also: https://api.researchmap.jp/fujimotokoichi/research_projects/24558629
see also: https://api.researchmap.jp/fujimotokoichi/research_projects/24558627
see also: https://api.researchmap.jp/fujimotokoichi/research_projects/31832413

s10265-021-01298-0
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https://www.ncbi.nlm.nih.gov/pubmed/33877466
label: pubmed
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https://api.researchmap.jp/fujimotokoichi/research_projects/24558629
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https://api.researchmap.jp/fujimotokoichi/research_projects/24558627
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https://api.researchmap.jp/fujimotokoichi/research_projects/31832413
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