Linking water use efficiency with water use strategy from leaves to communities.
New Phytol
; 240(5): 1735-1742, 2023 Dec.
Article
in En
| MEDLINE
| ID: mdl-37823336
ABSTRACT
Limitations and utility of three measures of water use characteristics were evaluated water use efficiency (WUE), intrinsic WUE and marginal water cost of carbon gain ( ∂ E / ∂ A ) estimated, respectively, as ratios of assimilation (A) to transpiration (E), of A to stomatal conductance (gs ) and of sensitivities of E and A with variation in gs . Only the measure ∂ E / ∂ A estimates water use strategy in a way that integrates carbon gain relative to water use under varying environmental conditions across scales from leaves to communities. This insight provides updated and simplified ways of estimating ∂ E / ∂ A and adds depth to understanding ways that plants balance water expenditure against carbon gain, uniquely providing a mechanistic means of predicting water use characteristics under changing environmental scenarios.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Photosynthesis
/
Water
Type of study:
Prognostic_studies
Language:
En
Journal:
New Phytol
Journal subject:
BOTANICA
Year:
2023
Type:
Article
Affiliation country:
Australia