Considering Giberellin and Brassinosteroid's Role

[socrtwo]

In my book GA is clearly a sugar deficiency hormone because it
inhibits root growth (reversing the increase need for sugar), stops
leaf and shoot broadening and switches it to lengthening (to get the
leaves out of the shade), promoting the hydrolysis of starch and the
promoting of the somewhat toxic but more efficient C4 photosynthesis.

BA on the other hand I have contrived to explain as a mineral defiency
signal despite the fact that it to stops root growth and increases
stem lengthening.

As I have postualted before (as have others also) I now return the
acceptance of the idea that BA is part of the hormone cascade set off
by GA. Conversely it could be BA that is the main hormone and GA is
simply somewhere down the line in the chemical mechanism set off by a
sugar defiency.

So now then in my scheme, the place for a mineral deficiency hormone
is unidentified and empty for the moment.

Auxin = oxygen and maybe carbon dioxide abundance
Ethylene = anoxia, oxygen and maybe carbon dioxide deficiency

Jasmonic Acid = sugar abundance
Gibberellin and Brassinosteroid = sugar defiency

Salicylic Acid = water abundance
Abscisic Acid = water deficiency

Cytokinin = mineral abundance
??????? = mineral defiency