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Titolo:
Nutrient availability influences UV-B sensitivity of Plantago lanceolata
Autore:
Tosserams, M; Smet, J; Magendans, E; Rozema, J;
Indirizzi:
Vrije Univ Amsterdam, Fac Biol, Dept Syst Ecol, NL-1081 HV Amsterdam, Netherlands Vrije Univ Amsterdam Amsterdam Netherlands NL-1081 HV erdam, Netherlands
Titolo Testata:
PLANT ECOLOGY
fascicolo: 1-2, volume: 154, anno: 2001,
pagine: 157 -
SICI:
1385-0237(200106)154:1-2<157:NAIUSO>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
ULTRAVIOLET-RADIATION; WATER-STRESS; FLAVONOID CONTENT; CARBON-DIOXIDE; CROP PLANTS; GROWTH; CO2; PHOTOSYNTHESIS; ARABIDOPSIS; IRRADIANCE;
Keywords:
carbohydrates; dune grassland ecosystem; nutrients; ozone depletion; Plantago lanceolata; UV absorbing pigments; UV-B radiation;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
52
Recensione:
Indirizzi per estratti:
Indirizzo: Tosserams, M Montferland 8, NL-8245 BM Lelystad, Netherlands Montferland 8 Lelystad Netherlands NL-8245 BM , Netherlands
Citazione:
M. Tosserams et al., "Nutrient availability influences UV-B sensitivity of Plantago lanceolata", PLANT ECOL, 154(1-2), 2001, pp. 157

Abstract

Seeds of Plantago lanceolata were collected in a dune grassland ecosystem in the Netherlands. Plants were grown in a greenhouse for 61 days under either low or high nutrient conditions and were exposed to four different levels of biologically effective UV-B radiation. The highest UV-B exposure level simulated 30% reduction of the stratospheric ozone layer during summertime in the Netherlands. Total biomass production of plants at low nutrient supply was 50% lower compared to plants grown at high nutrient supply, while net photosynthesis was decreased by only 12%. Increased levels of UV-B reduced biomass production under non-limiting nutrient conditions only. Biomassproduction of plants grown at limited nutrient supply was not affected by UV-B. This response was correlated to increased accumulation of carbohydrates under nutrient limitation, which agrees well with the carbon/nutrient balance hypothesis. It is concluded that the increased accumulation of carbonin nutrient-stressed plants, may lead to a reduction of UV-B induced damage because of increased foliar UV-B absorbance by enhanced accumulation of phenolic compounds and leaf thickening.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 09:45:15