basal disc

[′bā·səl ′disk]

(biology)

The expanded basal portion of the stalk of certain sessile organisms, used for attachment to the substrate.

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References in periodicals archive ?

The pastry was slightly overdone so it was at least crisp but an overflow of filling had been burnt black in the oven, creating a crunchy black basal disc.

TABLE TALK: A SUBTLE BLEND OF... SITUATED ON A ROAD WITH HIGH FATALITY RATES, GREASY PLATES, AND A LITTLE FOOD THROWN INTO THE MIX MAKE THIS PLACE A REAL FUSION FOR THE SENSES - AS ALISON DAVISON FOUND OUT

These cells remain in the attached, now basal, end of the metamorphosing animal [ILLUSTRATION FOR FIGURE 18 OMITTED]; where the upright portion of the pawn connects to the basal disc is a sharp demarcation between presence of interstitial cells in the base and absence of these cells above the base.

In the attachment area (basal disc) a few interstitial cells are found in both the ectoderm and the endoderm.

These cells are confined to the substrate-attached basal disc region of the metamorphosing animal and resemble the pattern described for the disc stage (Table I).

In the pawn a few ganglion cells differentiate in the basal disc (Table I).

Stages of larval development and stem cell population changes during metamorphosis of a hydrozoan planula

Basal discs or basal plates also showed potential to be an efficient explant for onion transformation and in vitro regeneration cultures in this study.