The effect of nutrient supply and light intensity on tannins and mycorrhizal colonisation in Dutch heathland ecosystems

Hofland-Zijlstra, J.D.; Berendse, F.

doi:10.1007/978-90-481-2798-6_25

Cited by 6 publications

(6 citation statements)

References 62 publications

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“…Although the synthesis of tannins which has complex structure needs large amount of energy, their widespread occurrence indicated the important role in plant function and evolution [4,5]. It has been suggested that dominant plant in poor-nutrient ecosystems exhibited advantages over the other species by the production of large amount of tannins and some other carbon-based secondary compounds [6].…”

Section: Introductionmentioning

confidence: 99%

Seasonal Variation of Tannin and Nutrient in Aegiceras corniculatum Leaves in Zhangjiang Mangrove Ecosystem

Huang¹,

Zhang²,

Wei³

et al. 2015

TOCENGJ

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Seasonal dynamics of total phenolics (TP), extractable condensed tannins (ECT), protein-bound condensed tannins (PBCT), fiber-bound condensed tannins (FBCT), total condensed tannins (TCT) and nitrogen contents in sun and shade leaves of Aegiceras corniculatum were studied in the Zhangjiang Estuary, Fujian Province, China. The contents of TP, ECT and TCT in the sun leaves were significantly higher than those in the shade leaves through the season. The N content in sun leaves was higher than that in shade leaves in the autumn, while it was lower in the summer, and there was no significant difference in the winter and spring. With the respect to the P through the year, P content in the sun leaves was different between seasons, with the highest in winter and the lowest in summer. In addition, the TP:N and ECT:N ratios in sun leaves were significantly higher than those in shade leaves except in autumn. High tannin levels and TP:N and ECT:N ratios in the sun leaves not only can reduce oxidative stress, but also improve the ability of resisting plant diseases and insect pests.

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Section: Introductionmentioning

confidence: 99%

Seasonal Variation of Tannin and Nutrient in Aegiceras corniculatum Leaves in Zhangjiang Mangrove Ecosystem

Huang¹,

Zhang²,

Wei³

et al. 2015

TOCENGJ

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“…With declining light, plants should allocate more biomass to aboveground structures and invest less in mycorrhizas to adjust resource imbalances (Chapin et al, 1987;Johnson et al, 2008;Johnson, 2010). Consistent with this expectation, several studies have shown reduced investment in mycorrhizal fungi with declining light, as measured by colonization (Tester et al, 1986;Son & Smith, 1988;Gehring, 2003;Hofland-Zijlstra & Berendse, 2009;Clark & St Clair, 2011) and physiological changes of mycorrhizal fungi (Johnson et al, 2006). Similarly, it has been observed that sporulation in fungal cultures is reduced with shading (Morton et al, 1993).…”

Section: Introductionmentioning

confidence: 91%

Shading decreases plant carbon preferential allocation towards the most beneficial mycorrhizal mutualist

Zheng

Zhang

et al. 2014

New Phytologist

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SummaryPreferential allocation towards the most beneficial mutualist could maintain mycorrhizal mutualism. Context dependence of preferential allocation could then determine environmental patterns in abundance of mycorrhizal mutualists.We assessed the preferential allocation of carbon (C) and differential phosphorus (P) uptake across four light treatments between the host plant Allium vineale and two arbuscular mycorrhizal (AM) fungi within a split-root system. The ratios of C allocation and P uptake between the beneficial and nonbeneficial AM fungi were measured using isotopic labelling.Allium vineale preferentially allocated more C towards roots infected with the most beneficial AM fungus in high light and, in return, received more P from the beneficial fungus. Preferential allocation declined with shading, as A. vineale allocated 25% of labelled C to roots infected with beneficial AM fungi in high light, but only 15% with shading, a similar percentage to that allocated to roots infected with nonbeneficial fungi regardless of shading.Our findings demonstrate that plant preferential allocation towards the most beneficial mycorrhizal mutualist depends upon above-ground resources, suggesting that the abundance of beneficial mycorrhizal fungi will increase with amount of above-ground resources, with implications for mycorrhizal mediation of plant productivity with anthropogenic change.

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“…In the second case, ecosystem responses can only be predicted from multifactor studies. In our particular system, there is evidence that the drought susceptibility of plants may increase under high N availability because of insufficient water supply resulting from N-induced changes in shoot-root ratios or mycorrhizal infection rates (Aerts, Boot & van der Aart 1991;Hofland-Zijlstra & Berendse 2009).…”

Section: Introductionmentioning

confidence: 94%

Impacts of drought and nitrogen addition onCallunaheathlands differ with plant life‐history stage

et al. 2015

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Summary1. Climate change and atmospheric deposition of nitrogen (N) affect the biodiversity patterns and functions of ecosystems world-wide. While many single-factor studies have quantified ecosystem responses to single global change drivers, less is known about the interaction effects of these drivers on ecosystem functions. 2. Here, we present the results of a three-year field and a two-year glasshouse experiment, in which we assessed responses of Calluna vulgaris heathlands to the single and combined effects of drought events (D) and N fertilization (D: 25% precipitation reduction in the field experiment and 20-50% soil water content reduction in the glasshouse experiment; N fertilization: 35 kg N ha À1 year À1 ).3. We examined the effects of D and N treatments on growth responses of the dominant dwarf shrub Calluna vulgaris (in terms of biomass production and allocation, tissue d 13 C signatures and C:N ratios) in relation to two plant life-history stages and different 'ecotypes' (sub-Atlantic vs. subcontinental heathlands). 4. Plant responses varied strongly with life-history stage, and the interaction of N and D showed lower effects than would be expected based on additive responses to single factors. While D treatments had no effects on Calluna in the building phase (ca. ten-year-old plants), seedlings (particularly one-year-old plants) were highly susceptible to drought. Differences in response patterns were attributable to the high shoot-root ratios typical of young Calluna plants. These ratios decreased with progressing life history as a result of increasing below-ground biomass investments. Below-ground biomass production and shoot-root ratios differed between plants from the different heathland sites. 5. Tissue d 13 C signatures decreased and C:N ratios increased with plant age as a result of decreasing evaporative demands (per unit root biomass). N fertilization increases the shoot-root ratios and thereby the drought susceptibility of Calluna plants. 6. Synthesis. Our findings suggest that plant responses to global change are difficult to anticipate by means of single-factor studies or by focusing on a single life-history stage. This highlights the need for global change research to include multiple factors and life-history stages when assessing an ecosystem's susceptibility to shifts in environmental conditions.

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The effect of nutrient supply and light intensity on tannins and mycorrhizal colonisation in Dutch heathland ecosystems

Cited by 6 publications

References 62 publications

Seasonal Variation of Tannin and Nutrient in Aegiceras corniculatum Leaves in Zhangjiang Mangrove Ecosystem

Seasonal Variation of Tannin and Nutrient in Aegiceras corniculatum Leaves in Zhangjiang Mangrove Ecosystem

Shading decreases plant carbon preferential allocation towards the most beneficial mycorrhizal mutualist

Impacts of drought and nitrogen addition onCallunaheathlands differ with plant life‐history stage

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