خيارات البحث
النتائج 1 - 10 من 11
Profiling of main metabolites in root exudates and mucilage collected from maize submitted to cadmium stress
2019
Lapie, Clémentine | Leglize, Pierre | Paris, Cédric | Sterckeman, Thibault | Buisson, Tatiana | Laboratoire Sols et Environnement (LSE) ; Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL) | Laboratoire d'Ingénierie des Biomolécules (LIBio) ; Université de Lorraine (UL) | Plateau d’Analyse Structurale et Métabolomique (PASM) ; Université de Lorraine (UL)
The aim of this study was to characterize qualitatively and quantitatively the composition of the main rhizodeposits emitted from maize (Zea mays) under Cd stress, in order to discuss their role in Cd availability and tolerance. Maize was grown for 6weeks in sand at four Cd exposure levels (0, 10, 20, and 40M Cd in nutrient solution) and two types of rhizodeposits were collected at the end of cultivation period. Mucilage and other molecules adhering to rhizospheric sand were extracted with a buffer before root exudates were collected by diffusion into water. Total carbon, proteins, amino acids, and sugars were analyzed for both rhizodeposit types and about 40 molecules were identified using GC-MS and LC-MS. Cadmium effect on plant morphology and functioning was slight, but consistent with previous works on Cd toxicity. However, rhizodeposition did tend to be impacted, with a decrease in total carbon, sugars, and amino acids correlating with an increasing Cd content. Such a decrease was not noticeable for proteins in root exudates. These observations were confirmed by the same trends in individual compound contents, although the results were generally not statistically significant. Many of the molecules determined are well-known to modify, whether directly or indirectly, Cd speciation and dynamics in the soil and could play a role in Cd tolerance.
اظهر المزيد [+] اقل [-]Root and shoot growth, assimilate partitioning and cell proliferation in roots of Sitka spruce (Picea sitchensis) grown in filtered and unfiltered chambers
1996
Bambridge, L. | Harmer, R. | Macleod, R. (AES Department, Ridley Building, Newcastle University, Newcastle upon Tyne, Tyne and Wear NE2 7RU (United Kingdom))
Effects of ozone on 14C translocation velocity and growth of spring wheat (Triticum aestivum L.) exposed in open-top chambers
1995
Mortensen, L. | Engvild, K.C. (National Environmental Research Institute, Department of Emissions and Air Pollution, Frederiksborgvej 399, DK-4000 Roskilde (Denmark))
The effect of paper industry effluent on growth, pigments, carbohydrates and proteins of rice seedlings
1991
Misra, R.N. | Behera, P.K. (Department of Botany, Government Science College, Chatrapur 761020, Orissa (India))
Alteration of physiological parameters in needles of cloned spruce trees (Picea abies (L.) Karst.) by ozone and acid mist
1990
Magel, E. | Holl, W. | Ziegler, H. (Institut fur Botanik und Mikrobiologie, Technische Universitat, 8000 Munich 2 (Germany))
Ozone-induced reduction in quantity and quality of two potato cultivars
1984
Pell, E.J. | Pearson, N.S. (Dep. of Pl. Path., Pennsylvania State Univ., University Park, PA 16802 (USA))
The effect of simulated acid rain on the biochemical composition of Scots pine (Pinus sylvestris L.) needles
1996
Shumejko, P. | Ossipov, V. | Neuvonen, S. (Institute of Forest, Krasnoyarsk, 660036 Akademgorodok (Russian Federation))
Acceleration of 13C-labelled photosynthate partitioning from leaves to panicles in rice plants exposed to chronic ozone at the reproductive stage
1995
Nouchi, I. | Ito, O. | Harazono, Y. | Kouchi, H. (National Institute of Agro-Environmental Sciences, 3-1-1 Kannondai, Tsukuba, Ibaraki 305 (Japan))
Intermediates of carbohydrate and energy metabolism in Norway spruce needels in relation to season and decline symptoms
1991
Einig, W. (Tuebingen Univ. (Germany). Physiologische Oekologie der Pflanzen) | Egger, B. | Hampp, R.
[Diurnal changes in photosynthetic activity of Norway spruce needles: Gas exchange, energy metabolism, and regulation of carbohydrate metabolism]
1991
Einig, W. (Tuebingen Univ. (Germany). Physiologische Oekologie der Pflanzen) | Weidmann, P. | Hampp, R. | Hagg, C. | Rinderle, U. | Lichtenthaler, H.K.
