Combined effects of acid mist and frost drought on the water status of young spruce trees (Picea abies)

Esch, Andreas; Mengel, K.

doi:10.1016/s0098-8472(97)00035-x

Cited by 13 publications

(11 citation statements)

References 24 publications

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“…These characteristics may be degraded by a variety of environmental factors, such as acid mist and solar radiation quality Steinmueller 1987, Esch andMengel 1998). In Pinus pinea and Scots pine needles, the enhanced UV-B (6.3 kJ m -2 and 7.5 kJ m -2 UV-B BE ) causes an increase in the thickness of the epidermal layer (Manetas et al 1997, Laakso et al 2000.…”

Section: Discussionmentioning

confidence: 99%

Responses in the physiology and biochemistry of Korean pine (Pinus koraiensis) under supplementary UV-B radiation

Zu¹,

Wei²,

Yu³

et al. 2011

Photosynt.

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The effect of supplementary UV-B radiation on Korean pine (Pinus koraiensis Sieb. et Zucc) was investigated. Compared with the control, the T1, T2, and T3 UV-B treatments increased by 1.40, 2.81, and 4.22 kJ m -2 d -1 , respectively. Gas-exchange parameters, photosynthetic pigment concentrations, contents of secondary metabolites, epicuticular wax, free radical, malondialdehyde (MDA), and the activities of antioxidant enzymes were determined after 40 d of exposure. The concentrations of chlorophyll (Chl) a, Chl b, total Chl, carotenoid (Car), and the ratio Chl a/b in the pine needles were in the following order: T1 > T2 > T3. Compared with the control, the contents of flavonoids and epicuticular wax significantly decreased in all levels of supplementary UV-B radiations (p<0.05). Moreover, the contents of hydrogen peroxide (H 2 O 2 ) and MDA significantly increased with the enhanced UV-B radiations (p<0.05). Korean pine can increase the catalase, ascorbate peroxidase, and superoxide dismutase activities to prevent oxidative stress by supplementary UV-B radiation. However, its defence mechanism is not efficient enough to prevent UV-Binduced damage.

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Section: Discussionmentioning

confidence: 99%

Responses in the physiology and biochemistry of Korean pine (Pinus koraiensis) under supplementary UV-B radiation

Zu¹,

Wei²,

Yu³

et al. 2011

Photosynt.

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“…Although leaf osmotic potentials could be affected by many eco-physiological features of plants, e.g., leaf longevity (Kontunen-Soppela and Laine 2001), and leaf water content (Esch and Mengel 1998), it is an innate physiological characteristic of plants and shows the ability of plants' tissues to absorb water moisture from soil. Furthermore, environmental factors such as precipitation (Matos et al 1997;Terwilliger and Zeroni 1994), temperature (Laroche et al 2001), light intensity (Marcelo et al 2000) and soil salt content (Sµnchez-Blanco et al 1998;Zimmermann et al 2002), can impact leaf y s , so the value of y s reflects the capability of plants to resist unfavorable environmental conditions.…”

Section: Discussionmentioning

confidence: 99%

Leaf osmotic potentials of 104 plant species in relation to habitats and plant functional types in Hunshandak Sandland, Inner Mongolia, China

et al. 2003

Trees

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Leaf osmotic potentials (y s ) of 104 plant species from different habitats, i.e., fixed sand dunes, lowland and wetlands in Hunshandak Sandland, Inner Mongolia, China, were investigated. The values of y s were strongly species-specific, and varied from 6.54 MPa ( Caragana microphylla), to 0.44 MPa (Digitaria ischaemum); 75% of plants investigated had y s from 1.01 to 3.0 MPa. Shrubs were found to have the lowest y s , with an average value of 3.19 MPa, while grasses showed the highest y s . The order of plant y s is shrubs

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“…Consequently, plants previously exposed to acid rain can become more sensitive to drought and dessication under water deficit, causing more pronounced stomatal closure and loss of turgor than for drought alone, as reported by Mena‐Petite et al . (1999) for Pinus radiata , and by Esch and Mengel (1998a,b) for spruce, Picea abies , under frost drought conditions. However, this need not always apply; for example, the susceptibility of Zea mays to drought stress was unaffected by simulated acid rain, and the wax was morphologically unchanged (Knittel & Pell, 1991).…”

Section: Pollutionmentioning

confidence: 99%

The effects of stress on plant cuticular waxes

2006

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Contents SummaryPlants are subject to a wide range of abiotic stresses, and their cuticular wax layer provides a protective barrier, which consists predominantly of long-chain hydrocarbon compounds, including alkanes, primary alcohols, aldehydes, secondary alcohols, ketones, esters and other derived compounds. This article discusses current knowledge relating to the effects of stress on cuticular waxes and the ways in which the wax provides protection against the deleterious effects of light, temperature, osmotic stress, physical damage, altitude and pollution. Topics covered here include biosynthesis, morphology, composition and function of cuticular waxes in relation to the effects of stress, and some recent findings concerning the effects of stress on regulation of wax biosynthesis are described.New Phytologist (2006) 171: 469-499

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Combined effects of acid mist and frost drought on the water status of young spruce trees (Picea abies)

Cited by 13 publications

References 24 publications

Responses in the physiology and biochemistry of Korean pine (Pinus koraiensis) under supplementary UV-B radiation

Responses in the physiology and biochemistry of Korean pine (Pinus koraiensis) under supplementary UV-B radiation

Leaf osmotic potentials of 104 plant species in relation to habitats and plant functional types in Hunshandak Sandland, Inner Mongolia, China

The effects of stress on plant cuticular waxes

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