Paper · 1971 · American Journal of Botany

Electron Microprobe Analysis of Silica in Epidermal Cells of Equisetum

Peter B. Kaufman; Wilbur C. Bigelow; Rudolf Schmid; et al.

4
claims
7
verbatim quotes
29
citations
1
research areas
✓
Open access

Abstract

Patterns of silica deposition on the outer epidermal cell walls of Equisclum arvense and E. hycmalc var. affine were examined by means of electron microprobe analysis. Silica is deposited primarily in discrete knobs and rosettes on the epidermal surface in E. arvense and essentially in a uniform pattern on and in the entire outer epidermal cell walls of E. hyemale var. affine. This markedly contrasts with patterns of silica deposition in internodal epidermal cells of Avena saliva (Gramineae) where silica is deposited primarily in cell walls and cell lumina, and to a much lesser extent, on the outer epidermal surface. Semi-quantitative analysis with the electron microprobe shows that in intercalary meristematic cells of E. aruense, silicon is not present in any cells, but that in mature epidermal cells above the intercalary meristem it is present in significant quantities. The study thus suggests that silica deposition must be a very rapid process in Equisclum and Avena.

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Claims 4

Observationobservedoriginal resultmeasured

Claim · model-written summary

In E. arvense, silica is deposited primarily in discrete knobs and rosettes on the epidermal surface.

Taxon
E. arvenseEquisetum arvensee2
Organ / stage
epidermal surfacee2
Outcome
silica depositione1
Qualifier
discrete knobs and rosettese2

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Equisetum arvense
Equisetum arvense · Taxonbotany08 · CC BY 4.0 · Wikimedia Commons ↗

Verbatim

e1

“Patterns of silica deposition on the outer epidermal cell walls of Equisclum arvense and E. hycmalc var. affine were examined by means of electron microprobe analysis”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e2

“Silica is deposited primarily in discrete knobs and rosettes on the epidermal surface in E. arvense”

✓ located verbatim in the source · abstract, characters 168–267 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

In E. hyemale var. affine, silica is deposited in a uniform pattern on and in the entire outer epidermal cell walls.

Taxon
E. hyemale var. affineEquisetum hyemalee3
Organ / stage
outer epidermal cell wallse3
Outcome
silica depositione1
Qualifier
uniform patterne3

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Equisetum hyemale
Equisetum hyemale · TaxonDiego Delso · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e1

“Patterns of silica deposition on the outer epidermal cell walls of Equisclum arvense and E. hycmalc var. affine were examined by means of electron microprobe analysis”

✓ located verbatim in the source · abstract, characters 0–166 · show in text ↑
e3

“essentially in a uniform pattern on and in the entire outer epidermal cell walls of E. hyemale var. affine”

✓ located verbatim in the source · abstract, characters 272–378 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

In E. aruense, silicon is not present in intercalary meristematic cells.

Taxon
E. aruensee4
Organ / stage
intercalary meristematic cellse4
Outcome
silicone4
Qualifier
not present in any cellse4

Verbatim

e4

“in intercalary meristematic cells of E. aruense, silicon is not present in any cells”

✓ located verbatim in the source · abstract, characters 692–776 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

In E. aruense, mature epidermal cells above the intercalary meristem contain silicon in significant quantities.

Taxon
E. aruensee4
Organ / stage
mature epidermal cellse5
Outcome
silicone4
Qualifier
significant quantitiese5

Verbatim

e4

“in intercalary meristematic cells of E. aruense, silicon is not present in any cells”

✓ located verbatim in the source · abstract, characters 692–776 · show in text ↑
e5

“in mature epidermal cells above the intercalary meristem it is present in significant quantities”

✓ located verbatim in the source · abstract, characters 787–883 · show in text ↑