pericycle

[Katica Ilic]

Pankaj,

(Related to the sec part of your message), luckily, as we know it,
pericycle is present only in the root, so we don't
need to worry about having the term pericycle getting instantiated all
over the place.

Katica

On Tue, 31 Aug 2004, Pankaj Jaiswal wrote:

> Hi,
> Here is what I proposed in response to Alison's mail for pericycle
>
> ---PO:0009075 : plant ontology
> ----i PO:0009011 : plant structure
> -------i PO:0009003 : sporophyte
> -----------p PO:0009005 : root
> --------------p PO:0000258 : root cortex
> --------------p PO:0020124 : root stele
> -------------------p PO:0006203 : pericycle
> -------i PO:0009007 : tissue
> -----------i PO:0005708 : cortex
> --------------i PO:0000258 : root cortex
> --------------i PO:0006203 : pericycle
>
> But this is again leading us into a black hole, which we are trying to
> avoid. The term pericycle is a generic term and we need to create its
> instances such as
> -root pericycle
> -stem pericycle
> -leaf pericycle
>
> In order to make correct lineage the instantiation is required.
>
> Current definition and comments sauugest it so..
>
> # Definition:
>
>      * Part of the tissue of the stele located between the phloem and
> endodermis.
>
> # Comment:
>
>      * In seed plants it is regularly present in roots and absent in
> most stems and leaves.
>
>
>
> -Pankaj
>
>

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