SAM restructuring suggestion

[Pankaj Jaiswal]

<http://www.plantontology.org/amigo/go.cgi?action=plus_node&depth=1&search_constraint=terms&query=PO:00201482>


Refer to:
http://www.plantontology.org/amigo/go.cgi?view=details&show_associations=terms&search_constraint=terms&depth=0&query=PO:0020148

Looks like we need a specific instance of SAM, ie. "vegetative shoot 
apical meristem". The current term is too generic for curating 
vegetative SAM.

The reason being, I am curating a lot of flowering time genes and many 
are involved in regulating the transition of vegetative SAM to 
reproductive SAM. This event is critical in  short-day or long-day light 
response resulting in early/delayed flowering.

Current structure is like follows:


#  PO:0020148 : shoot apical meristem   ( 32 )

     * PO:0000224 : central zone
     * PO:0006362 : embryonic shoot apical meristem
     * PO:0000229 : floral meristem
     * PO:0000230 : inflorescence meristem
     * PO:0009020 : meristem L1
     * PO:0009021 : meristem L2
     * PO:0009022 : meristem L3
     * PO:0000225 : peripheral zone
     * PO:0005039 : primary thickening meristem
     * PO:0000226 : rib zone
     * PO:0006306 : shoot procambium
--------------------------------------------------

Proposed

#  PO:0020148 : shoot apical meristem   ( 32 )
   i PO:new : vegetative shoot apical meristem
     p PO:0000224 : central zone
     i PO:0006362 : embryonic shoot apical meristem
     p PO:0009020 : meristem L1
     p PO:0009021 : meristem L2
     p PO:0009022 : meristem L3
     p PO:0000225 : peripheral zone
     p PO:0005039 : primary thickening meristem
     p PO:0000226 : rib zone
     p PO:0006306 : shoot procambium
   i PO:new : reproductive shoot apical meristem
     i PO:0000229 : floral meristem
     i PO:0000230 : inflorescence meristem


PO:0020148 : shoot apical meristem
Def: current
     Meristem formed in the apex of the shoot, including meristems 
originating as axillary shoot meristems.
Def: proposed
     Meristem formed in the apex of the shoot or those originating as 
axillary and reproductive meristems.

PO:new : vegetative shoot apical meristem
Def: proposed
	Copy the original SAM definition.

PO:new : reproductive shoot apical meristem
Def: proposed
     Meristem formed in the apex of the shoot originating as 
inflorescence and or flower meristems.

-Pankaj