Claim · model-written summary
Vegetative cell microtubules are suggested to act indirectly on pollen germination by mediating actin conformational changes.
- Taxon
- pear
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communise0 - Outcome
- pollen germinatione6
- Qualifier
- indirect through their mediation of the conformational changes in actin organizatione6
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“To study microtubule organization in germinating pear (Pyrus communis L., cv., Bartlett) pollen”
e6“It is suggested that the role of vegetative cell microtubules in pollen germination is indirect through their mediation of the conformational changes in actin organization that are essential for pollen germination”
Title
The initiation and organization of microtubules in germinating pear (Pyrus communis L.) pollen.
S C Tiwari; V S Polito PubMed 1990
Other claims from this paper (7)
- Observation Axial microtubule bundles are present in the generative cell of both inactivated and activated pear pollen.
- Observation Microtubules are absent from vegetative cells of inactivated pear pollen but present in vegetative cells of activated pollen.
- Observation Microtubule nucleation occurs in the vegetative cell cortex of pear pollen.
- Observation Microtubules grow as branching arrays through most of the vegetative cell cortex.
- Observation At the apertures, vegetative cell microtubules form localized converging or criss-cross patterns.
- Observation In germinated pear pollen grains, microtubules form network-like arrays through most of the grain.
- Observation A collar of short microtubule arrays forms at the base of the pear pollen tube.