According to the description, there should be no changes in either taste or nutrients, which is a good thing.

This kind of genetic manipulation, where the control of gene expression is modified for greater productivity, is much more promising than the attempts to make a plant produce different chemical substances than it was producing previously or behave differently in the presence of pesticides, because for the latter cases it is still very difficult to predict whether the genetic changes that are done will have only the desired effects, without other undesirable consequences.

Is there much research into doing the same for non food crop plants? Like for trees with the goal of faster reforestation?

> it is still very difficult to predict whether the genetic changes that are done will have only the desired effects

This is true universally IMO.

What even are "nutrients"? It seems such a nebulous term. Do we really have a vitamin problem with a modern diet? I sure as heck don't know anyone getting rickets or scurvy or beri-beri.