Image from Google Jackets

Effects of NO2 and O3 alone or in combination on kidney bean plants (Phaseolus vulgaris L.): products of (13)CO2 assimilation detected by (13)C nuclear magnetic resonance

By: Contributor(s): Material type: ArticleArticleLanguage: English Description: 36(163):281-289Subject(s): LOC classification:
  • 27285
 In: Journal of Experimental BotanySummary: Se examino el efecto de la exposicion de hojas primordiales de frijol al NO2 y O3, solos o en combinacion, en el destino del (13)CO2 asimilado mediante fotosintesis con el uso de resonancia magnetica nuclear con (13)C. En los espectros para sustancias en extractos foliares en etanol del 80 por ciento aparecieron mas de 70 puntos max. Los 16 puntos max. relativamente bien definidos correspondieron a senales provenientes de 3 azucares, 2 acidos organicos y 4 aminoacidos. Los tamanos de las fuentes y los valores de incorporacion de (13)C se estimaron a partir de las senales. La exposicion a NO2 y O3 aumento las concn. de sucrosa y fructosa, pero no la incorporacion de (13)C durante 10 min de fotosintesis, lo cual indica la presencia de fuentes fotosinteticamente inactivas de sucrosa y fructosa. Mediante la exposicion a los contaminantes se aumentaron las cantidades de glicina y serina, y la incorporacion de (13)C en ellas. La incorporacion de (13)C a la alanina se estimulo mediante exposicion a NO2, con o sin O3, pero no por exposicion a O3 solo. (RA-CIAT)Summary: The effect of exposure of primary leaves of Phaseolus vulgaris to NO2 and O3, alone or in combination, on the fate of (13)CO2 assimilated by photosynthesis was examined by (13)C-nuclear magnetic resonance. Over 70 peaks appeared in the spectra for substances in leaf extracts in 80 percent ethanol. The 16 relatively well resolved peaks corresponded to signals from 3 sugars, 2 organic acids, and 4 amino acids. Pool sizes and (13)C incorporation values were estimated from the signals. Exposure to NO2 and O3 increased sucrose and fructose concn. but not the (13)C incorporation during 10 min photosynthesis, suggesting the presence of photosynthetically inactive pools of sucrose and fructose. Amounts of glycine and serine, and (13)C incorporation into them, were increased by exposure to pollutants. (13)C incorporation into alanine was stimulated by exposure to NO2, with or without O3, but not by exposure to O3 alone. (AS)
Tags from this library: No tags from this library for this title.
Star ratings
    Average rating: 0.0 (0 votes)
Holdings
Item type Current library Collection Call number Copy number Status Date due Barcode Item holds
Journal Article Journal Article CIAT Library Document collection CINFOS Document Collection CINFOS 27285 (Browse shelf(Opens below)) c.1 Short Loan 100044683
Total holds: 0

Se examino el efecto de la exposicion de hojas primordiales de frijol al NO2 y O3, solos o en combinacion, en el destino del (13)CO2 asimilado mediante fotosintesis con el uso de resonancia magnetica nuclear con (13)C. En los espectros para sustancias en extractos foliares en etanol del 80 por ciento aparecieron mas de 70 puntos max. Los 16 puntos max. relativamente bien definidos correspondieron a senales provenientes de 3 azucares, 2 acidos organicos y 4 aminoacidos. Los tamanos de las fuentes y los valores de incorporacion de (13)C se estimaron a partir de las senales. La exposicion a NO2 y O3 aumento las concn. de sucrosa y fructosa, pero no la incorporacion de (13)C durante 10 min de fotosintesis, lo cual indica la presencia de fuentes fotosinteticamente inactivas de sucrosa y fructosa. Mediante la exposicion a los contaminantes se aumentaron las cantidades de glicina y serina, y la incorporacion de (13)C en ellas. La incorporacion de (13)C a la alanina se estimulo mediante exposicion a NO2, con o sin O3, pero no por exposicion a O3 solo. (RA-CIAT) spa

The effect of exposure of primary leaves of Phaseolus vulgaris to NO2 and O3, alone or in combination, on the fate of (13)CO2 assimilated by photosynthesis was examined by (13)C-nuclear magnetic resonance. Over 70 peaks appeared in the spectra for substances in leaf extracts in 80 percent ethanol. The 16 relatively well resolved peaks corresponded to signals from 3 sugars, 2 organic acids, and 4 amino acids. Pool sizes and (13)C incorporation values were estimated from the signals. Exposure to NO2 and O3 increased sucrose and fructose concn. but not the (13)C incorporation during 10 min photosynthesis, suggesting the presence of photosynthetically inactive pools of sucrose and fructose. Amounts of glycine and serine, and (13)C incorporation into them, were increased by exposure to pollutants. (13)C incorporation into alanine was stimulated by exposure to NO2, with or without O3, but not by exposure to O3 alone. (AS) eng

Powered by Koha