CO2 efflux, CO2 concentration and photosynthetic refixation in stems of Eucalyptus globulus (Labill.)

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منابع مشابه

CO2 efflux, CO2 concentration and photosynthetic refixation in stems of Eucalyptus globulus (Labill.).

In spite of the importance of respiration in forest carbon budgets, the mechanisms by which physiological factors control stem respiration are unclear. An experiment was set up in a Eucalyptus globulus plantation in central Portugal with monoculture stands of 5-year-old and 10-year-old trees. CO(2) efflux from stems under shaded and unshaded conditions, as well as the concentration of CO(2) dis...

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The geometry of light capture in plantation Eucalyptus globulus labill

The nature and spatial distribution of leaf area, especially leaf size, density and orientation, strongly regulates light harvesting as well as the exchange of carbon and water between plants and atmosphere (Pearcy and Yang 1996). The occupation of three-dimensional space and the characteristics of branches on which leaves are arranged, combine to generate wide variations in shoot, branch and t...

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Antifilarial Activity of Eucalyptus globulus Labill. Leaves Against Brugia malayi

The present study is aimed to evaluate the antifilarial activity of Eucalyptus globules Labill. (Myrtaceae) against human lymphatic filarial parasite Brugia malayi in vitro and in vivo. The ethanolic extract of the leaves was tested in vitro on adult worms and microfilariae (mf) of B. malayi and the active sample was further evaluated in vivo in B. malayi intraperitoneally (i.p.) transplanted i...

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Photosynthetic temperature responses of Eucalyptus globulus an

temperature of 4-year-old Eucalyptus globulus Labill. and E. nitens (Deane and Maiden) Maiden trees were measured between 10 and 35 °C at approximately monthly intervals from early spring to midwinter. The photosynthetic temperature optimum of recently expanded leaves in the sun canopy was linearly related to the average temperature of the preceding week during the 9-month measurement period. T...

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Linking photosynthesis and leaf N allocation under future elevated CO2 and climate warming in Eucalyptus globulus

Leaf-level photosynthetic processes and their environmental dependencies are critical for estimating CO2 uptake from the atmosphere. These estimates use biochemical-based models of photosynthesis that require accurate Rubisco kinetics. We investigated the effects of canopy position, elevated atmospheric CO2 [eC; ambient CO2 (aC)+240 ppm] and elevated air temperature (eT; ambient temperature (aT...

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ژورنال

عنوان ژورنال: Journal of Experimental Botany

سال: 2008

ISSN: 1460-2431,0022-0957

DOI: 10.1093/jxb/ern272