“In the case of sulphur and soot, we saw only regional or less significant responses in the photosynthetic shutdown, which lasted less than six months,” Senel says.

Source: https://www.discovermagazine.com/planet-earth/did-a-dust-plume-kill-the-dinosaurs

The Salk scientists acknowledge there is work to do on suberin, and they are exploring how they might add enhanced photosynthetic efficiency to counter the potential yield problem.

Source: https://www.theguardian.com/environment/2023/oct/15/superpower-plants-absorb-carbon-co2-climate-crisis

This isotope ratio allows reviewing the relation of the trees' rate of photosynthesis and the stomatal conductivity, i.e., the photosynthetic rate of trees in comparison to water use.

Source: https://phys.org/news/2023-03-fast-recovery-suppressed-norway-spruce.html