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 6
Claim · model-written summary
Silica formed discrete knobs and rosettes on the epidermal surface of E. arvense.
Not reportedDirection
Verbatim
e0“Silica is deposited primarily in discrete knobs and rosettes on the epidermal surface in E. arvense”
Claim · model-written summary
Silica was distributed essentially uniformly on and in the outer epidermal cell walls of E. hyemale var. affine.
Not reportedDirection
Verbatim
e0“essentially in a uniform pattern on and in the entire outer epidermal cell walls of E. hyemale var. affine”
Claim · model-written summary
In Avena saliva, silica occurred primarily in cell walls and lumina and much less on the outer epidermal surface.
- Taxon
- Avena salivae0
- Organ / stage
- internodal epidermal cellse0
- Outcome
- silica is deposited primarily in cell walls and cell lumina, and to a much lesser extent, on the outer epidermal surfacee0
Not reportedDirection
Verbatim
e0“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”
Claim · model-written summary
Silicon was absent from intercalary meristematic cells of E. aruense.
- Taxon
- E. aruensee0
- Organ / stage
- intercalary meristematic cellse0
- Outcome
- silicon is not present in any cellse0
Not reportedDirection
Verbatim
e0“in intercalary meristematic cells of E. aruense , silicon is not present in any cells”
Claim · model-written summary
Silicon was present in significant quantities in mature epidermal cells above the intercalary meristem of E. aruense.
- Taxon
- E. aruensee0
- Organ / stage
- mature epidermal cells above the intercalary meristeme0
- Outcome
- silicone0
- Qualifier
- significant quantitiese0
Not reportedDirection
Verbatim
e0“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”
Claim · model-written summary
The authors infer that silica deposition is very rapid in Equisclum and Avena.
Not reportedDirection
Verbatim
e0“silica deposition must be a very rapid process in Equisclum and Avena”