This is such an old thread, but I urge anyone who is curious to google the Calvin-Benson Cycle of photosynthesis.
can’t post links but there are some great articles out there.
The plant simply does not store “nutrients” in the root system at night it’s kinda funny actually all those reactions happen right there in the leaves. Everything chemically present during the day is still there, but is being used differently. There is zero advantage to harvesting day or night besides possibly environmental conditions or the stabilization of resins, which the plant uses during the day and replenishes at night.. harvesting light or dark will not affect the final outcome noticeably unless maybe your day/night conditions fluctuate to maybe dessert conditions..?
Hope it’s some good learning material if nothing else, for folks looking to get some knowledge based on hard scientific data.