NDLI: Nutrition and the ozone sensitivity of birch (Betula pendula) : I. Responses at the leaf level

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Plant growth, leaf water potential, nitrogenase activity and nodule anatomy in Leucaena leucocephala as affected by water stress and nitrogen availability

Effect of the ectomycorrhizal fungus Hebeloma cylindrosporum on in vitro rooting of micropropagated cuttings of arbuscular mycorrhiza-forming Prunus avium and Prunus cerasus

Trees : Volume 11

Nutrition and the ozone sensitivity of birch (Betula pendula) : I. Responses at the leaf level

Content Provider	Springer Nature Link
Author	Maurer, Stefan Matyssek, R. Günthardt Goerg, Madeleine S. Landolt, Werner Einig, Werner
Copyright Year	1997
Abstract	Cuttings of a single birch clone (Betula pendula) were grown in field fumigation chambers throughout the growing season in either filtered air (control) or 90/40 nl O3 l–1 (day/night). Both regimes were split into plants under high and low nutrient supply (macro- and micronutrients). The stomatal density of leaves was increased by ozone but was lowered at high nutrition, while the inner air space was hardly affected by the treatments. Ozone induced macroscopic leaf injury regardless of nutrition, but leaf shedding was delayed in the low-fertilized plants, despite O3 uptake being similar to that in high-fertilized plants. The leaf turn-over was enhanced in the O3-exposed high-fertilized plants, but length growth and leaf formation of stems were not affected by ozone in either nutrient regime. Leaves of high-fertilized plants showed O3-caused decline in photosynthetic capacity, water-use efficiency, apparent carbon uptake efficiency and quantum yield earlier as compared with low-fertilized plants, whereas chlorophyll fluorescence (FV/FM) and leaf nitrogen concentration were rather stable. CO2 uptake rate and rubisco activity of young leaves compensated for the O3 injury in the ageing leaves of the low-fertilized plants. In 8-week-old leaves, however, the O3-induced decline in CO2 uptake did not differ between the nutrient regimes and was associated with increased dark respiration rather than changed photorespiration. The balance between CO2 supply and demand was lost, as was stomatal limitation on CO2 uptake. High nutrition did not help leaves to maintain a high photosynthetic capacity and life span under O3 stress.
Starting Page	1
Ending Page	10
Page Count	10
File Format	PDF
ISSN	09311890
Journal	Trees
Volume Number	12
Issue Number	1
e-ISSN	14322285
Language	English
Publisher	Springer-Verlag
Publisher Date	1997-11-18
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Ecology Physiology Plant Science Forestry

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