About this Research Topic
Then the important questions to answer will be whether and how crop plants grown under e[CO2] can regulate stomatal behavior and water use when experiencing drought and heat stresses. The ability of crop plants to tolerate drought under the increasing concentrations of atmospheric [CO2] and temperature is largely dependent on the effectiveness of stomatal control over transpiration. The sensitivity of gs to ABA signaling during soil drying could be modified by e[CO2] and high temperature; yet to date, there is no consensus regarding the modulation of CO2growth environment on the response of gs to soil water deficits and heat stress. Also, it remains largely unknown about the significance of hydraulic and chemical signals in controlling gs of drought-stressed plants grown under e[CO2] and high temperatures. Therefore, there is a need to examine how e[CO2] modulates gs response to soil drying and heat stress in different crop species, and what are the underlying bio-physiological mechanisms regulating stomatal aperture of plants grown in a future warmer, drier and CO2-enriched climate.
This Research Topic aims to access and make available the state-of-the-art research progress on the interactive effects of e[CO2] x drought x high temperature on plant water relation characteristics. The Research Topic will focus on exploring the mechanisms regulating leaf gas exchange and water use efficiency across different crop species as influenced by drought and heat stress under CO2 elevation. The scale of the contributions will be at local, regional and global. We welcome authors to report original and novel research on the effect of drought and heat stress, individually or in combination, on stomatal aperture and morphology under a CO2-enriched environment. Modeling approaches will also be considered to simulate the response of gs in response to changes of these abiotic factors.
We encourage submission from various disciplines, as case studies, reviews and viewpoint papers. Descriptive studies that compile experimental data without providing a mechanistic insight into the described phenomena will not be considered for review.
Keywords: CO2 Elevation, Drought, Heat, Stomatal Conductance, Chemical Signalling
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