Ozone-induced stomatal sluggishness changes stomatal parameters of Jarvis-type model in white birch and deciduous oak.

08:00 EDT 21st September 2017 | BioPortfolio

Summary of "Ozone-induced stomatal sluggishness changes stomatal parameters of Jarvis-type model in white birch and deciduous oak."

Stomatal ozone flux is closely related to ozone injury to plants. Jarvis-type multiplicative model has been recommended for estimating stomatal ozone flux in forest trees. Ozone may change stomatal conductance by both stomatal closure and less efficient stomatal control (stomatal sluggishness). However, current Jarvis-type models did not account for these ozone effects on stomatal conductance in forest trees. We thus examined seasonal course of stomatal conductance in two common deciduous tree species native to northern Japan (white birch: Betula platyphylla var. japonica; deciduous oak: Quercus mongolica var. crispula) grown under a free-air ozone exposure. We innovatively considered stomatal sluggishness into Jarvis-type model by a simple parameter s, relating to cumulative ozone uptake (defined as
phytotoxic ozone dose). We found that ozone decreased stomatal conductance of white birch leaves after full expansion (-28%). However, such a reduction of stomatal conductance by ozone was diminished in late summer (-10%). At the same time, ozone reduced stomatal sensitivity of white birch to vapor pressure deficit and increased stomatal conductance under low light condition. On the other hand, in deciduous oak, ozone did not change clearly the model parameters. The consideration of both ozone-induced stomatal closure and stomatal sluggishness improved the model performance to estimate stomatal conductance and to explain the dose-response relationship about ozone-induced decline of photosynthesis of white birch. Our results indicate that the ozone effects on stomatal conductance (i.e., stomatal closure and stomatal sluggishness) are crucial for modelling studies to determine stomatal response in deciduous trees, especially about sensitive species to ozone. This article is protected by copyright. All rights reserved.


Journal Details

This article was published in the following journal.

Name: Plant biology (Stuttgart, Germany)
ISSN: 1438-8677


DeepDyve research library

PubMed Articles [14154 Associated PubMed Articles listed on BioPortfolio]

Ozone Deposition and Risk Assessment for a Winter Wheat Field:Partitioning Between Stomatal and Non-stomatal Pathways.

To better understand the ozone deposition and risk assessment over agroecosystems based on the ozone flux indices, an eddy-covariance system was used for measuring the ozone deposition continuously an...

Toward multifaceted roles of sucrose in the regulation of stomatal movement.

Plant atmospheric CO fixation depends on the aperture of stomatal pores at the leaf epidermis. Stomatal aperture or closure is regulated by changes in the metabolism of the two surrounding guard cells...

Phytomelatonin Receptor PMTR1-Mediated Signaling Regulates Stomatal Closure in Arabidopsis thaliana.

Melatonin has been detected in plants in 1995; however, the function and signaling pathway of this putative phytohormone are largely undetermined due to a lack of knowledge about its receptor. Here, w...

Starch biosynthesis by AGPase, but not starch degradation by BAM1/3 and SEX1, is rate-limiting for CO -regulated stomatal movements under short-day conditions.

Starch in guard cells functions in osmoregulation during stomatal movements. Starch metabolism is controlled by the circadian-clock. We investigated the role of starch metabolism in stomatal responses...

Sucrose-induced stomatal closure is conserved across evolution.

As plants evolved to function on land, they developed stomata for effective gas exchange, for photosynthesis and for controlling water loss. We have recently shown that sugars, as the end product of p...

Clinical Trials [4669 Associated Clinical Trials listed on BioPortfolio]

Effects of Ozone Therapy as an Adjunct to Periodontal Treatment

This randomized, placebo controlled, split-mouth clinical study trial evaluates the effects of Ozone therapy on clinical and biochemical parameters. Total of 20 participants completed the ...

Effects of Fish Oil in Alleviating Health Hazards Associated With Ozone Exposure

This study aims to evaluate whether dietary supplementation with fish oil can protect against the cardiopulmonary effects induced by ozone exposure.

The Effect of Low Level Ozone Exposure on Healthy Volunteers

The purpose of this research study is to learn more about the effects of 0.12 ppm ozone exposure on humans. We know from other studies that exposure to levels of ozone that are seen on ba...

Ozone and Rhinovirus-Induced Disease in Asthmatics

In the U.S., morbidity associated with human rhinovirus (RV) infection represents a major health problem. In asthmatics, up to 80% of asthma exacerbations are associated with upper respir...

Effect Of Obesity On Ozone-Induced Airway Inflammation

The purpose of this study is to compare the effect of ozone exposure on airway reactivity and inflammation in obese vs. non-obese adults.

Medical and Biotech [MESH] Definitions

Blue-light receptors that regulate a range of physiological responses in PLANTS. Examples include: PHOTOTROPISM, light-induced stomatal opening, and CHLOROPLAST movements in response to changes in light intensity.

A shift in the balance between production and destruction of STRATOSPHERIC OZONE that results in a decline of the amount of OZONE in the lower stratosphere.

Ozone in the Earth's stratosphere. It is produced continuously by the action of solar ULTRAVIOLET RAYS on oxygen in the stratosphere. The stratospheric ozone (especially at the ozone layer) blocks much of the solar UV radiation of wavelengths of 320 nanometers or less from being transmitted to lower ATMOSPHERE of the Earth.

A rigorously mathematical analysis of energy relationships (heat, work, temperature, and equilibrium). It describes systems whose states are determined by thermal parameters, such as temperature, in addition to mechanical and electromagnetic parameters. (From Hawley's Condensed Chemical Dictionary, 12th ed)

A general state of sluggishness, listless, or uninterested, with being tired, and having difficulty concentrating and doing simple tasks. It may be related to DEPRESSION or DRUG ADDICTION.

Quick Search


DeepDyve research library

Searches Linking to this Article