sporocyte


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Related to sporocyte: Microphyll

sporocyte

[′spȯr·ə‚sīt]
References in periodicals archive ?
We further suggest that the pre-meiotic system of microtubule bands involved in precocious quadrilobing of the sporocyte cytoplasm may have evolved in early land plants and was (Brown & Lemmon, 2011a) transmitted to the later evolving sporophyte generation as a mechanism for control of division polarity in vegetative growth.
Thus, the quadripolar sporocyte achieves proper placement of tetrad nuclei, one in each of the predetermined spore domains.
Spore cleavage is a terre commonly used for cytokinesis following meiosis when the cytoplasm of the sporocyte divides into a tetrad of spores.
As has been previously stated, meiotic cytokinesis in bryophytes is almost always simultaneous and reflects the division planes established by the phenomenon of sporocyte quadrilobing.
The widespread and conspicuous simple thalloid liverwort Pallavacinia was a favorite subject of the early cytologists who described quadrilobing of the sporocyte and the quadripolar origin of the spindle (e.
A single transmission electron micrograph showing the deeply lobed, polyplastidic, oil filled sporocyte was published by Shimamura et al.
Thus, the irregularly shaped archesporial cell displaying bipolarity is gradually transformed into a distinctive quadripolar sporocyte with four tetrahedral spore domains at the onset of meiotic prophase.
Following definition of the quadripolar sporocyte the girdling bands disappear.
As in Sphagnum, the number of plastids is reduced to one in each sporocyte.
65c, d) where additional sporocyte wall material is deposited, thus deepening the infurrows and contributing to lobing of the sporocyte into the four future spore domains.
75c) and the cytoplasm lobes around the plastid poles with substantial deposition of sporocyte wall material at the boundaries of the opposing microtubule arrays.
Sequential stages of sporocyte development are seen in longitudinal files of cells produced by the basal meristem.