Tannins in nutrient dynamics of forest ecosystems - a review

Kraus, Tamara E.C.; Dahlgren, Randy A.; Zasoski, Robert J.

doi:10.1023/a:1026206511084

Cited by 643 publications

(599 citation statements)

References 241 publications

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“…The Tgr effect was caused by low-tannin plants decomposing slightly faster than high-tannin plants. This agrees with the hypothesized negative effect of tannins on decomposition (Kraus et al 2003), and with observations of several other studies, which showed that tannins decreased decomposition rates (Driebe and Whitham 2000;Madritch et al 2006;LeRoy et al 2007;Liu et al 2009). The main effect of N was due to reduced mass loss in response to the high N treatment.…”

Section: Discussionsupporting

confidence: 93%

“…Also, for the related European aspen, Populus tremula L., a keystone species in the boreal region (Siitonen and Martikainen 1994;Kouki et al 2004), substantial genotypic variations in tannin concentrations have been reported (Robinson et al 2012;Bandau et al 2015). Tannins have long been recognized for their potential role in defending plants against generalist herbivores and pathogens (Kraus et al 2003;Holeski et al 2009;Barbehenn and Constabel 2011;Robinson et al 2012), but they are increasingly also acknowledged to influence soil processes, such as litter decomposition (Kraus et al 2003;Madritch et al 2006;Schweitzer et al 2008;Madritch and Lindroth 2015), through their resistance to degradation by soil microbes, as well as their ability to bind and stabilize plant proteins or microbial enzymes (Benoit and Starkey 1968;Fierer et al 2001;Kraus et al 2003 and references therein;Joanisse et al 2007). …”

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confidence: 99%

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Genotypic variability in Populus tremula L. affects how anthropogenic nitrogen enrichment influences litter decomposition

et al. 2016

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Background and aims Boreal forests can receive substantial nitrogen (N) enrichment via atmospheric N deposition and industrial forest fertilization. While it is known that N enrichment can impact ecosystem properties, such as litter decomposition, it remains poorly understood how genetic variability within plant species modifies these impacts. Methods We grew replicates of ten Populus tremula L. genotypes (GTs) under 3 N conditions; ambient, and levels representing atmospheric N deposition and industrial forest fertilization. We measured leaf and litter physical and chemical traits, and conducted a litter decomposition assay.

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Section: Discussionsupporting

confidence: 93%

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confidence: 99%

Genotypic variability in Populus tremula L. affects how anthropogenic nitrogen enrichment influences litter decomposition

et al. 2016

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“…For example, variation in tannin concentrations can alter leaf litter quality (Lindroth et al, 2002;Madritch et al, 2006). Concentrations of both nitrogen and phenolics (especially tannins) play important roles in litter decomposition and soil nutrient dynamics in forest soils (Schimel et al, 1996;Northup et al, 1998;Hä ttenschwiler and Vitousek, 2000;Kraus et al, 2003;Schweitzer et al 2004). In fact, an alternative hypothesis to the role of tannins as antiherbivore defenses posits that they may be adaptive in their capacity to regulate proximal nutrient cycling (Northup et al, 1998).…”

Section: Discussionmentioning

confidence: 99%

“…For example, primary plant compounds such as protein and water are critical for herbivore growth and development (Awmack and Leather, 2002), and qualitative or quantitative variation in phytochemical defenses within a species also strongly influences herbivore behavior and performance (Crawley, 1983;Schultz, 1988;Shelton, 2000). At the ecosystem level, phytochemical variation can influence litter decomposition and nutrient cycling rates (Schimel et al, 1996;Hä ttenschwiler and Vitousek, 2000;Kraus et al, 2003;Madritch et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Age-Related Shifts in Leaf Chemistry of Clonal Aspen (Populus tremuloides)

et al. 2006

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Developmental changes in plant structure and function can influence both mammalian and arthropod feeding preferences for many woody plant species. This study documents age-related changes that occur in the leaf chemistry of trembling aspen (Populus tremuloides Michx., Salicaceae) and discusses implications for the herbivore community and ecosystem processes. We collected leaves from replicate ramets from six age classes (1-25+ yr) in each of seven aspen clones growing in south central Wisconsin, USA. Chemical analyses were conducted to determine concentrations of condensed tannins, phenolic glycosides (salicortin and tremulacin), nitrogen, starch, and soluble sugars. Each variable differed significantly among clones and among age classes. On average, condensed tannin concentrations doubled in the first five years and then remained fairly constant among older age classes. Combined phenolic glycoside (salicortin + tremulacin) concentrations were high in the youngest ramets (ca. 19%) and decreased sharply with age. Developmental changes in tannin, salicortin, and tremulacin concentrations exceeded those of nitrogen and carbohydrates. Developmental shifts of this magnitude, and the agerelated tradeoff that occurs between condensed tannins and phenolic glycosides, are likely to have significant influence on the herbivore community of aspen and may influence leaf litter decomposition and nutrient cycling.

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“…A large fraction of tannins and simpler phenolics appear to enter the soil as foliar leachate 10 . These tannins are known to affect several microbial processes such as decomposition and nitrogen fi xation 11 . Acetone or methanol is usually used to extract tannins from plant material, but a signifi cant fraction of the tannins (5-50%) are non-extractable 12 .…”

Section: Resultsmentioning

confidence: 99%

Inhibitory activity of pine needle tannin extracts on some agriculturally resourceful microbes

2007

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Crude extracts of water and solvent extractable tannin fractions from pine needles were found to contain tannin concentrations of 10.15% and 13.15% tannic acid equivalents respectively. Thin Layer Chromatography revealed the presence of four distinct phenolic compounds, amongst which two were tannic acid like compounds. Both the extracts were found to be inhibitory to several microbes of agricultural importance. Amongst the bacterial strains studied, Azotobacter sp (VL-A2) was able to tolerate upto 1000 ppm of crude tannin concentration without any growth inhibition. While growth of Rhizobium (VL -R1) and Bacillus halodurans (MTCC 7181) was inhibited by crude tannin concentrations of 50 and 100 ppm respectively of both water and solvent extracted tannins. Among the fungal genera, Pleurotus djamor was found to tolerate up to 10000 ppm of crude tannins, while Trichoderma virescens (MTCC 6321) and T. reesii could tolerate up to 3000 ppm of both water extractable and acetone extractable crude tannins without any growth inhibition.

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Tannins in nutrient dynamics of forest ecosystems - a review

Cited by 643 publications

References 241 publications

Genotypic variability in Populus tremula L. affects how anthropogenic nitrogen enrichment influences litter decomposition

Genotypic variability in Populus tremula L. affects how anthropogenic nitrogen enrichment influences litter decomposition

Age-Related Shifts in Leaf Chemistry of Clonal Aspen (Populus tremuloides)

Inhibitory activity of pine needle tannin extracts on some agriculturally resourceful microbes

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