Comment on it's true!
AnimalsDream@slrpnk.net 3 weeks agoAs others have said, the size of roots is pretty directly tied to the size of foliage. Roots store energy(calories) in case something happens to the foliage or sunlight is low. The more energy they can take in, the more storage they need, as well as the stability that larger plants need from larger roots.
But how do you keep feeding the larger roots if the photosynthetic engines have giving them energy have been damn near removed?
Modern_medicine_isnt@lemmy.world 2 weeks ago
Hm, this doesn’t fit. You are saying the roots store energy in case the foliage is lost, then saying the roots can’t exist without the foliage. Which is it? I get that they are energy storage. So the foliage in all plants must generate an excess of energy to fill the storage. That should mean that once the storage is full, extra energy can be spent to extend the roots, then fill with energy, rinse repeat.
AnimalsDream@slrpnk.net 2 weeks ago
It makes perfect sense. When the foliage is cut, it takes energy to regrow it. If there’s not enough greens or sunlight for photosynthesis to account for the plant’s total needs, it will draw those nutrients from the roots into the rest of the plant.
And there’s a whole lot of other things going on in the soil around roots as well. For example the interrelationships between plants and microbes has a tendency to start with the roots exuding sugars into the soil in order to attract those microbes. And that’s just a start. I think it’s really interesting stuff. If you wanna learn more, Regenerative Soil by Matt Powers is a fantastic book on the subject.
Modern_medicine_isnt@lemmy.world 2 weeks ago
It is really interesting stuff. But it doesn’t explain why the roots can’t be bigger. You can take a small power source and charge a big battery or a small battery. It just takes longer for the big battery.
AnimalsDream@slrpnk.net 2 weeks ago
Well, to some degree it might be possible to selectively breed plants to prioritize root production a little more. I’m not sure to what extent that’s feasible though. You also have to understand, plants have evolved to actively want to be as big as possible. If you’re a small plant, your neighbor is more likely to grow larger than you, which blocks the sun from getting to you, which will cause you to die. So trying to make plants smaller in and of itself has ecological risks. Or at the very least, such naturally short lawns would be a lot more susceptible to weed encroachment.