Maximum leaf conductance driven by CO2 effects on stomatal size and density over geologic time.

Influence of salinity on co2 fluxes stomatal conductance and specific leaf eeight of jojoba

Carbon and Oxygen Isotope Analysis of Leaf Biomass Reveals Contrasting Photosynthetic Responses to Elevated Co(2) Near Geologic Vents in Yellowstone National Park

In this study we explore the use of natural CO2 emissions in Yellowstone National Park (YNP) in Wyoming, USA to study responses of natural vegetation to elevated CO2 levels. Radiocarbon (14C) analysis of leaf biomass from a conifer (Pinus contortus; lodgepole pine) and an invasive, non-native herb (Linaria dalmatica; Dalmation toadflax) was used to trace the inputs of vent CO2 and quantify assi...

Foliar Responses of Olive Trees (Olea Europaea L.) under Field Exposure to Elevated CO2 Concentration

Five-year-old olive plants (cvs. Frantoio and Moraiolo) grown in large pots were exposed for seven months to ambient or high atmospheric CO2 concentration ([CO2]) in free-air CO2 enrichment facility. Exposure to elevated [CO2] enhanced net photosynthesis and decreased stomatal conductance, leading to greater water use efficiency. Stomatal density also decreased in elevated [CO2], while the rati...

Why is plant-growth response to elevated CO2 amplified when water is limiting, but reduced when nitrogen is limiting? A growth-optimisation hypothesis

Experimental evidence indicates that the stomatal conductance and nitrogen concentration ([N]) of foliage decline under CO2 enrichment, and that the percentage growth response to elevated CO2 is amplified under water limitation, but reduced under nitrogen limitation. We advance simple explanations for these responses based on an optimisation hypothesis applied to a simple model of the annual ca...

The effect of spraying of methyl jasmonate and 24-epi-brassinolide on photosynthesis, chlorophyll fluorescence and leaf stomatal traits in black mustard (Brassica nigra L.) under salinity stress

Methyl jasmonate and Epi-brassinolide as plant growth regulators have significant biological effects on plant growth, including increased tolerance to salt stress in plants. In this study, the effects of salinity stress and its interaction with methyl jasmonate and Epi-brassinolide on chlorophyll concentration, rate of photosynthesis, transpiration, stomatal conductance and resistance and chlor...