Photosynthetic induction and its diffusional, carboxylation and electron transport processes as affected by CO2 partial pressure, temperature, air humidity and blue irradiance.

ABSTRACT:

Background and aims

Plants depend on photosynthesis for growth. In nature, factors such as temperature, humidity, CO₂ partial pressure, and spectrum and intensity of irradiance often fluctuate. Whereas irradiance intensity is most influential and has been studied in detail, understanding of interactions with other factors is lacking.

Methods

We tested how photosynthetic induction after dark-light transitions was affected by CO₂ partial pressure (20, 40, 80 Pa), leaf temperatures (15·5, 22·8, 30·5 °C), leaf-to-air vapour pressure deficits (VPD_leaf-air; 0·5, 0·8, 1·6, 2·3 kPa) and blue irradiance (0-20 %) in tomato leaves (Solanum lycopersicum).

Key results

Rates of photosynthetic induction strongly increased with CO₂ partial

SUBMITTER: Kaiser E 

PROVIDER: S-EPMC5218377 | biostudies-literature | 2017 Jan

REPOSITORIES: biostudies-literature