Tree age dependence and within-canopy variation of leaf gas exchange and antioxidative defence in Fagus sylvatica under experimental free-air ozone exposure

2005 ◽  
Vol 137 (3) ◽  
pp. 476-482 ◽  
Author(s):  
K. Herbinger ◽  
Ch. Then ◽  
M. Löw ◽  
K. Haberer ◽  
M. Alexou ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Fagus Sylvatica ◽  
Leaf Gas Exchange ◽  
Ozone Exposure ◽  
Tree Age ◽  
Age Dependence ◽  
Antioxidative Defence ◽  
Free Air

The effects of environmental conditions on the inhibition of leaf gas exchange by NO2

1975 ◽  
Vol 53 (5) ◽  
pp. 475-482 ◽  
Author(s):  
H. S. Srivastava ◽  
P. A. Jolliffe ◽  
V. C. Runeckles
Keyword(s):  
Gas Exchange ◽  
Dark Respiration ◽  
Leaf Gas Exchange ◽  
Absolute Magnitude ◽  
High Irradiance ◽  
Diffusion Resistance ◽  
Inhibitory Effects ◽  
Natural Ecosystems ◽  
Photosynthetic Inhibition ◽  
Free Air

An open flow system was used to examine the uptake and effects of NO2 on gas exchange by primary leaves of bean (Phaseolus vulgaris L.) under a variety of conditions of irradiance, temperature, humidity, and atmospheric CO2 and O2 concentrations. At 3.0 ppm, NO2 inhibited apparent photosynthesis and dark respiration in all the conditions tested. Both 3.0 ppm and 7.0 ppm NO2 inhibited the evolution of CO2 into CO2-free air. The absolute magnitude of photosynthetic inhibition by NO2 was greatest at high irradiance, at the optimum temperature for apparent photosynthesis, and at high humidities. Changes in CO2 concentration from 100 to 600 ppm and in O2 concentration from 0 to 21% did not affect the percentage inhibition of apparent photosynthesis by NO2. High temperatures increased the inhibitory effects of NO2 on dark respiration.The effects of NO2 on apparent photosynthesis, dark respiration, and CO2 evolution into CO2-free air were based on inhibitory effects exerted within the leaves and not on CO2 diffusion into the leaf. Transpiration rate and stomatal diffusion resistance were only slightly affected by NO2. The uptake of NO2 was enhanced by high temperature, low CO2 concentration, and high humidity. The results of these studies support the view that NO2 uptake is subject to internal limitations ("mesophyll resistance") under many environmental conditions.The range and prevalence of NO2 effects suggest that NO2 may cause general detrimental changes in the physiology of leaf cells. Furthermore, the circumstances under which NO2 effects were found to occur indicate that such effects may be significant in natural ecosystems.

Effects of chronic elevated ozone exposure on gas exchange responses of adult beech trees (Fagus sylvatica) as related to the within-canopy light gradient

2009 ◽  
Vol 157 (2) ◽  
pp. 537-544 ◽  
Author(s):  
Mitsutoshi Kitao ◽  
Markus Löw ◽  
Christian Heerdt ◽  
Thorsten E.E. Grams ◽  
Karl-Heinz Häberle ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Fagus Sylvatica ◽  
Ozone Exposure ◽  
Elevated Ozone ◽  
Light Gradient

Antioxidative Defence of Old Growth Beech (Fagus sylvatica) under Double Ambient O3Concentrations in a Free-Air Exposure System

Plant Biology ◽  
2007 ◽  
Vol 9 (2) ◽  
pp. 215-226 ◽  
Author(s):  
K. Haberer ◽  
K. Herbinger ◽  
M. Alexou ◽  
M. Tausz ◽  
H. Rennenberg
Keyword(s):  
Fagus Sylvatica ◽  
Old Growth ◽  
Air Exposure ◽  
Exposure System ◽  
Antioxidative Defence ◽  
Free Air

Foliar injury, leaf gas exchange and biomass responses of black cherry (Prunus serotina Ehrh.) half-sibling families to ozone exposure

2000 ◽  
Vol 107 (1) ◽  
pp. 117-126 ◽  
Author(s):  
K.B Kouterick ◽  
J.M Skelly ◽  
T.S Fredericksen ◽  
K.C Steiner ◽  
T.E Kolb ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Leaf Gas Exchange ◽  
Prunus Serotina ◽  
Ozone Exposure ◽  
Black Cherry ◽  
Foliar Injury ◽  
Half Sibling

Gas Exchange and Antioxidative Compounds in Young Beech Trees under Free-Air Ozone Exposure and Comparisons to Adult Trees

Plant Biology ◽  
2007 ◽  
Vol 9 (2) ◽  
pp. 288-297 ◽  
Author(s):  
K. Herbinger ◽  
C. Then ◽  
K. Haberer ◽  
M. Alexou ◽  
M. Löw ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Ozone Exposure ◽  
Free Air ◽  
Adult Trees

The Effects of Drought on Leaf Gas Exchange and Growth of Three Species of Herbaceous Perennials

HortScience ◽  
1998 ◽  
Vol 33 (3) ◽  
pp. 540a-540
Author(s):  
K.J. Prevete ◽  
R.T. Fernandez
Keyword(s):  
Drought Stress ◽  
Stomatal Conductance ◽  
Gas Exchange ◽  
Drought Tolerance ◽  
Transpiration Rate ◽  
Leaf Gas Exchange ◽  
Gas Analysis ◽  
Herbaceous Perennials ◽  
Effects Of Drought ◽  
Analysis System

Three species of herbaceous perennials were tested on their ability to withstand and recover from drought stress periods of 2, 4, and 6 days. Eupatorium rugosum and Boltonia asteroides `Snowbank' were chosen because of their reported drought intolerance, while Rudbeckia triloba was chosen based on its reported drought tolerance. Drought stress began on 19 Sept. 1997. Plants were transplanted into the field the day following the end of each stress period. The effects of drought on transpiration rate, stomatal conductance, and net photosynthetic rate were measured during the stress and throughout recovery using an infrared gas analysis system. Leaf gas exchange measurements were taken through recovery until there were no differences between the stressed plants and the control plants. Transpiration, stomatal conductance, and photosynthesis of Rudbeckia and Boltonia were not affected until 4 days after the start of stress. Transpiration of Eupatorium decreased after 3 days of stress. After rewatering, leaf gas exchange of Boltonia and Rudbeckia returned to non-stressed levels quicker than Eupatorium. Growth measurements were taken every other day during stress, and then weekly following transplanting. Measurements were taken until a killing frost that occurred on 3 Nov. There were no differences in the growth between the stressed and non-stressed plants in any of the species. Plants will be monitored throughout the winter, spring, and summer to determine the effects of drought on overwintering capability and regrowth.

scholarly journals Grapevine species from varied native habitats exhibit differences in embolism formation/repair associated with leaf gas exchange and root pressure

2015 ◽  
Vol 38 (8) ◽  
pp. 1503-1513 ◽  
Author(s):  
THORSTEN KNIPFER ◽  
ASHLEY EUSTIS ◽  
CRAIG BRODERSEN ◽  
ANDREW M. WALKER ◽  
ANDREW J. MCELRONE
Keyword(s):  
Gas Exchange ◽  
Leaf Gas Exchange ◽  
Root Pressure ◽  
Native Habitats
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