Claim · model-written summary
Successive cambia periodically originate by periclinal division beyond the outermost intact phloem.
- Taxon
- Phytolacca dioica L.
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Phytolacca dioicae1 - Outcome
- Succeeding cambia arise periodically by periclinal divisionse0
- Qualifier
- two or three cells beyond the outermost intact phloeme0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e0“Succeeding cambia arise periodically by periclinal divisions in a layer of parenchyma cells two or three cells beyond the outermost intact phloem derived from the current cambium”
e1“Phytolacca dioica L.”
Title
SUCCESSIVE CAMBIA IN THE STEM OF PHYTOLACCA DIOICA
David Wheat American Journal of Botany 1977. doi:10.1002/j.1537-2197.1977.tb10813.x
Other claims from this paper (9)
- Observation Stem thickening in P. dioica is produced by successive cambia.
- Observation Its cambium produces fascicular strands with centrifugal xylem and centripetal phloem differentiation.
- Observation Rays form between the fascicular areas.
- Observation Younger xylem and phloem elements lie closer to the cambium than older elements.
- Observation Each cambium produces parenchyma on both sides before forming xylem and phloem conductive derivatives.
- Observation Outwardly produced parenchyma becomes the origin of the next cambium.
- Observation Only one or two layers of phloem parenchyma form a new cambium; remaining cells accumulate near the cortex.
- Observation P. weberbaueri has stem structure similar to P. dioica.
- Observation P. meziana has normal stem structure.