Photosynthesis in orchid roots?

[terryros]

We know that orchid roots certainly move air, water, and other compounds and the leaves don't do so much of this. I noticed a remark in the s/h forum that roots in clear plastic pots could photosynthesize? Do we have evidence for this? This would be a potential advantage of a clear plastic pot over others. Since I am growing all pots in a saucer reservoir of solution rather than just using the pot alone with holes up at 1 inch I had been thinking about switching to green/black plastic pots to eliminate algae growth since I don't need the clear pots to tell me when to water. However, I guess I don't want to give up on important photosynthesis. This seems a bit hard for me to believe since a lot of the roots are pretty white.