Claim · model-written summary
Nodule rootlets developed from lateral vascular strand branches and terminal extensions of apical vascular bundle tips.
- Taxon
- Caragana arborescens
Caragana arborescenst0 - Organ / stage
- vascular bundles within the nodulee0
- Outcome
- development of these rootletse0
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CARAGANA ARBORESCENS”
e0“The development of these rootlets from lateral branches of vascular strands and from terminal extensions of the apical tips of vascular bundles within the nodule is described”
Title
MORPHOLOGICAL DEVELOPMENT OF NODULES ON CARAGANA ARBORESCENS LAM.
Ethel K. Allen; K. F. Gregory; O. N. Allen Canadian Journal of Botany 1955. doi:10.1139/b55-009
Other claims from this paper (8)
- Observation Root hair invasion and early cortical infection resembled herbaceous legume nodules, with fewer cells infected.
- Observation Infection threads remained active behind the nodule meristem throughout growth and spread infection to new cells.
- Observation Leghemoglobin distribution in mature nodules matched active bacteroidal tissue in apical zones.
- Mechanism Endodermal thickening and suberization apparently restricted diffusion and aeration.
- Mechanism Senescence began relatively early, presumably because of restricted diffusion and aeration.
- Mechanism Cell-wall thickening delayed or prevented necrosis in proximal nodule areas.
- Mechanism A protective periderm replacing outer cortex enhanced nodule longevity.
- Observation Nodule rootlets were observed on six- to eight-month-old nodules.