the initial product of photosynthesis in sugarcane sterile ..
participation in photosynthesis (the Soviet scientists A
Several days of cloudy weather can slow the rate of photosynthesis, resulting in lower oxygen production within a waterbody. If you have a small fish pond with an aerator, turn it on during cloudy weather. To learn more, read .
Discovering the Secrets of Photosynthesis - Biology …
An abundance of suspended clay, silt, or phytoplankton (free-floating algae) can also make a lake turbid or murky, which may slow or prevent submersed plant photosynthesis and growth because of low-light conditions.
photosynthesis | Importance, Process, & Reactions - …
We have made major contributions to understanding the regulation of photosynthesis by identifying and characterizing mutants of both Chlamydomonas and Arabidopsis that are defective in nonphotochemical quenching (NPQ), which regulates light harvesting in nearly all photosynthetic eukaryotes (Figure 2). The mutant analysis helped to define the carotenoid pigments (zeaxanthin and lutein) that are involved in NPQ and showed that a photosystem II protein of previously unknown function, PsbS, is necessary for the main component of NPQ in Arabidopsis. We discovered that the stress-related antenna protein called LHCSR is essential for NPQ in the green alga Chlamydomonas, instead of PsbS. In collaboration with Graham Fleming (University of California, Berkeley [UC Berkeley] and Lawrence Berkeley National Laboratory [Berkeley Lab]) and Roberto Bassi (University of Verona), we are using reconstitution and ultrafast spectroscopy to elucidate the pigment architecture and underlying biophysical mechanism of NPQ in different organisms. We are also investigating the possibility of improving photosynthesis by altering NPQ.
Aristotle | Biography, Contributions, & Facts | …
Regulation of Photosynthetic Light Harvesting
The actual efficiency of photosynthetic light utilization in nature is relatively low, mainly because algae and plants are unable to use most of the light energy that they absorb. The rate of photosynthesis typically reaches a maximum (Pmax) at a light intensity well below that of full sunlight (Figure 1). Therefore, most of the photons that are absorbed by an algal cell or plant leaf end up being wasted. Photoprotective mechanisms that regulate light harvesting by dissipating excess light energy as heat have evolved to minimize generation of oxidizing molecules that would otherwise inhibit photosynthesis and growth.