Photosynthetic Temperature Tolerance Threshold Determines How Isoprene Emission is Affected by Elevated CO2 Concentration at High Temperatures DOI Creative Commons
Vinícius Fernandes de Souza, José Francisco de Carvalho Gonçalves, Bahtijor Rasulov

et al.

Plant-Environment Interactions, Journal Year: 2025, Volume and Issue: 6(3)

Published: May 2, 2025

ABSTRACT The suppression of isoprene emissions by high CO 2 levels can be mitigated increasing temperature; however, little is known about why and to what extent species differ in their temperature‐dependent release from inhibition. We studied leaf photosynthetic characteristics over a 25°C–40°C temperature range at concentrations 150, 400, 1000 μmol mol −1 two with contrasting heat resistance. In the temperate Populus tremula , rising temperatures above 30°C shifted electron flow photosynthesis synthesis, reducing inhibition due enhanced synthase activity decreased sensitivity DMADP pool. Conversely, tropical Inga edulis showed greater tolerance its apparatus, maintaining for fixation, exhibited consistent throughout experiment. These findings indicate that differences relative light dark reactions play crucial roles modulating under combined conditions.

Language: Английский

Ignoring previous water conditions underestimates global terrestrial ecosystem productivity in severely arid vegetation regions DOI
Jingyu Zeng, Tao Zhou, Eric C. D. Tan

et al.

Global and Planetary Change, Journal Year: 2025, Volume and Issue: unknown, P. 104799 - 104799

Published: March 1, 2025

Language: Английский

Citations

2
Photosynthetic Temperature Tolerance Threshold Determines How Isoprene Emission is Affected by Elevated CO2 Concentration at High Temperatures DOI Creative Commons
Vinícius Fernandes de Souza, José Francisco de Carvalho Gonçalves, Bahtijor Rasulov

et al.

Plant-Environment Interactions, Journal Year: 2025, Volume and Issue: 6(3)

Published: May 2, 2025

ABSTRACT The suppression of isoprene emissions by high CO 2 levels can be mitigated increasing temperature; however, little is known about why and to what extent species differ in their temperature‐dependent release from inhibition. We studied leaf photosynthetic characteristics over a 25°C–40°C temperature range at concentrations 150, 400, 1000 μmol mol −1 two with contrasting heat resistance. In the temperate Populus tremula , rising temperatures above 30°C shifted electron flow photosynthesis synthesis, reducing inhibition due enhanced synthase activity decreased sensitivity DMADP pool. Conversely, tropical Inga edulis showed greater tolerance its apparatus, maintaining for fixation, exhibited consistent throughout experiment. These findings indicate that differences relative light dark reactions play crucial roles modulating under combined conditions.

Language: Английский

Citations

0