High-performance liquid chromatography of water-soluble phenolics in leaf litter of three Eucalyptus hybrids (Congo)

Chapuis‐Lardy, Lydie; Contour-Ansel, Dominique; Bernhard-Reversat, F.

doi:10.1016/s0168-9452(02)00099-7

Cited by 73 publications

(44 citation statements)

References 19 publications

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“…A number of systems have been established to separate and detect phenolic acids and aldehydes in plant cell walls , Chapuis-Lardy et al, 2002, Chen et al, 2003, however it was found that HPLC analysis using a C 18 column and methanol: aqueous trifluoroacetic acid (0.1 M) as the mobile phase could separate the major and minor phenolics in one chromatographic run. Individual phenolic compounds were identified by comparing the absorption spectra of the unknown metabolite with that of an authentic standard (Waterman andMole, 1994, van Beek, 1999).…”

Section: Resultsmentioning

confidence: 99%

Profiling C6–C3 and C6–C1 phenolic metabolites in Cocos nucifera

Dey

Chakraborty

Mitra

2005

Journal of Plant Physiology

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Section: Resultsmentioning

confidence: 99%

Profiling C6–C3 and C6–C1 phenolic metabolites in Cocos nucifera

Dey

Chakraborty

Mitra

2005

Journal of Plant Physiology

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“…Total phenolic compounds were extracted according to Chapuis-Lardy et al (2002) with some modifications. Samples (0.5 g FW) were pulverized in liquid nitrogen, mixed with 20 ml of 80% methanol, and homogenized at room temperature for 1 min.…”

Section: Total Phenolics and Anthocyaninsmentioning

confidence: 99%

Water deficit improved the capacity of arbuscular mycorrhizal fungi (AMF) for inducing the accumulation of antioxidant compounds in lettuce leaves

2011

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Lettuce, a major food crop within the European Union and the most used for the so-called 'Fourth Range' of vegetables, can associate with arbuscular mycorrhizal fungi (AMF). Mycorrhizal symbiosis can stimulate the synthesis of secondary metabolites, which may increase plant tolerance to stresses and enhance the accumulation of antioxidant compounds potentially beneficial to human health. Our objectives were to assess (1) if the application of a commercial formulation of AMF benefited growth of lettuce under different types and degrees of water deficits; (2) if water restrictions affected the nutritional quality of lettuce; and (3) if AMF improved the quality of lettuce when plants grew under reduced irrigation. Two cultivars of lettuce consumed as salads, Batavia Rubia Munguía and Maravilla de Verano, were used in the study. Four different water regimes were applied to both non-mycorrhizal and mycorrhizal plants: optimal irrigation (field capacity [FC]), a water regime equivalent to 2/3 of FC, a water regime equivalent to 1/2 of FC and a cyclic drought (CD). Results showed that mycorrhizal symbiosis improved the accumulation of antioxidant compounds, mainly carotenoids and anthocyanins, and to a lesser extent chlorophylls and phenolics, in leaves of lettuce. These enhancements were higher under water deficit than under optimal irrigation. Moreover, shoot biomass in mycorrhizal lettuces subjected to 2/3 of FC were similar to those of non-mycorrhizal plants cultivated under well-watered conditions. In addition, lettuces subjected to 2/3 FC had similar leaf RWC than their respective well-watered controls, regardless of mycorrhizal inoculation. Therefore, results suggest that mycorrhizal symbiosis can improve quality of lettuce and may allow restrict irrigation without reducing production.

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“…leaf litter addition had different effects on microbial activity and organic matter mineralization rates in soils from pasture and forest (Aggangan et al 1999). Eucalyptus leaf litter is rich in lignin, tannins and polyphenols (Chapuis-Lardy et al 2002) and the effects of N inputs on organic matter decomposition may depend on substrate lignin content (Hobbie 2000). Our results suggest that the impact of NFT on C and N stocks in soils that have been cultivated for several decades with Eucalyptus plantations might be different from the common pattern reported for afforestation in soils with a large proportion of organic matter produced by grasses.…”

Section: Soil Carbon and Nitrogen Stocksmentioning

confidence: 99%

Introducing Acacia mangium trees in Eucalyptus grandis plantations: consequences for soil organic matter stocks and nitrogen mineralization

et al. 2011

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Background and aims Eucalyptus plantations cover 20 million hectares on highly weathered soils. Large amounts of nitrogen (N) exported during harvesting lead to concerns about their sustainability. Our goal was to assess the potential of introducing A. mangium trees in highly productive Eucalyptus plantations to enhance soil organic matter stocks and N availability. Methods A randomized block design was set up in a Brazilian Ferralsol soil to assess the effects of mono-specific Eucalyptus grandis (100E) and Acacia mangium (100A) stands and mixed plantations (50A:50E) on soil organic matter stocks and net N mineralization. Results A 6-year rotation of mono-specific A. mangium plantations led to carbon (C) and N stocks in the forest floor that were 44% lower and 86% higher than in pure E. grandis stands, respectively. Carbon and N stocks were not significantly different between the three treatments in the 0-15 cm soil layer. Field incubations conducted every 4 weeks for the two last years of the rotation estimated net soil N mineralization in 100A and 100E at 124 and 64 kg ha?1 yr?1, respectively. Nitrogen inputs to soil with litterfall were of the same order as net N mineralization. Conclusions Acacia mangium trees largely increased the turnover rate of N in the topsoil. Introducing A. mangium trees might improve mineral N availability in soils where commercial Eucalyptus plantations have been managed for a long time. (Résumé d'auteur

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High-performance liquid chromatography of water-soluble phenolics in leaf litter of three Eucalyptus hybrids (Congo)

Cited by 73 publications

References 19 publications

Profiling C6–C3 and C6–C1 phenolic metabolites in Cocos nucifera

Profiling C6–C3 and C6–C1 phenolic metabolites in Cocos nucifera

Water deficit improved the capacity of arbuscular mycorrhizal fungi (AMF) for inducing the accumulation of antioxidant compounds in lettuce leaves

Introducing Acacia mangium trees in Eucalyptus grandis plantations: consequences for soil organic matter stocks and nitrogen mineralization

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