The Soil as Direct Source of Carbon Dioxide for Ordinary Plants

Livingston, Burton E.; Beall, R.A.

doi:10.1104/pp.9.2.237

Cited by 20 publications

(5 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The element most limiting for boreal forest plants is nitrogen (Vitousek and Howarth 1991 ), while carbon, the main constituent of living matter, is readily available from CO 2 (Livingston and Beall 1934 ). The deciduous upsurge after forest clearing (an assart effect, Kimmins 2003 ; Odum 1969 ) coincides with a rapid, short-term elevation of soil nitrate (Kreutzweiser et al 2008 ; Mattson 1980 ).…”

Section: Discussionmentioning

confidence: 99%

Compositional Changes in Foliage Phenolics with Plant Age, a Natural Experiment in Boreal Forests

2017

View full text Add to dashboard Cite

The composition of plant secondary metabolites (PSMs) extensively impacts ecosystem functioning. It is vital that we understand temporal patterns in the plants’ allocation of resources to PSMs, particularly those influenced by human activity. Existing data are insufficient in the long-term perspective of perennial plants (age or ontogeny). We analysed phenolic concentrations in foliage from birch (Betula pubescens Ehr.) considered to be undamaged and growing on 5, 10 and 15 years old clear-cuts in two boreal forest landscapes in Norway, sampled at the peak of the growing season. In sum, low molecular weight phenolic concentrations decreased with age. Apart from one apigenin glycoside, the low molecular weight phenolics co-varied similarly at all ages, suggesting a lack of temporal compound-specific prioritisation of this group. In contrast, the concentration of MeOH-soluble condensed tannins increased with age. The compositional shift fits well with several hypotheses that may provide proximate explanations for age patterns in PSM allocations, including both resource constraints and external pressures. Regardless of these explanations, our study adds an important perennial perspective (plant age) to temporal PSM patterns already well-known in boreal plant phenology (foliage age).Electronic supplementary materialThe online version of this article (10.1007/s10886-017-0881-5) contains supplementary material, which is available to authorized users.

show abstract

Section: Discussionmentioning

confidence: 99%

Compositional Changes in Foliage Phenolics with Plant Age, a Natural Experiment in Boreal Forests

2017

View full text Add to dashboard Cite

show abstract

“…Effects of high CO2 concentration.s in the soil on plant growth have been studied since the beginning of this century (for an early review see Livingston & Beall 1934). Soil CO2 was expected to be utilized as a source of inotganic carbon for photosynthesis.…”

Section: Soil Co2 Concentrations and Plant Growthmentioning

confidence: 99%

Soil CO₂ concentration does not affect growth or root respiration in bean or citrus

Bouma

Nielsen

Eissenstat

et al. 1997

Plant Cell & Environment

View full text Add to dashboard Cite

Contrasting effects of soil CO2 concentration on root respiration rates during short-term CO2 exposure, and on plant growth during long-term CO2 exposure, have been reported. Here we examine the effects of both short-and long-term exposure to soil CO2 on the root respiration of intact plants and on plant growth for bean (Phaseolus vulgaris L.) and citrus (Citrus volkainenana Tan. & Pasq.). For rapidly growing bean plants, the growth and maintenance components of root respiration were separated to determine whether they differ in sensitivity to soil CO2. Respiration rates of citrus roots were unaffected by the CO2 concentration used during the respiration measurements (200 and 2000 ^niol nioP'), regardless of the soil CO2 concentration dnring the previous month (600 and 20 000 pniol nioP'). Bean plants were grown with their roots exposed to either a natural CO2 diffusion gradient, or to an artificially maintained CO2 concentration of 600 or 20 000 ^/niol niol"'. These treatments had no effect on shoot and root growth. Growth respiration and maintenance respiration of bean roots were also unaffected hy CO2 pre-treatment and the CO2 concentration used dnring the respiration measurements (200-2000 //mol mol"'). We conclude that soil CO2 concentrations in the range likely to be encountered in natural soils do not affect root respiration in citrus or bean.

show abstract

“…As can be seen in Figure 5a, while this led to a reasonable estimation of the aboveground plant 14 C concentration (AGP), SSPAM 14 C grossly underestimated the belowground plant 14 C concentrations (BGP). Increasing the proportion of plant C obtained directly from the roots to 10% (as proposed by Livingston and Beall 1934) improves the model fit (Figure 5b), but there is still a significant underestimation as compared the experimental data. Other factors that might affect the calculated BGP 14 C concentration, such as the translocation rate between the AGP and BGP compartments and the respiration rate of the BGP, were considered in additional sensitivity calculations but had a lesser impact than the assumed amount of root uptake of carbon.…”

Section: Resultsmentioning

confidence: 88%

Soil-Plant-Atmosphere Modeling in the Context of Releases of ¹⁴C as a Consequence of Nuclear Activities

Limer

Klos²,

Walke³

et al. 2013

Radiocarbon

View full text Add to dashboard Cite

The need to address radiological impacts from radiocarbon released to the biosphere has been recognized for some time. In 2011, the Swedish Radiation Safety Authority (SSM) commissioned a study to develop a 14C model of the soil-plant-atmosphere system that would provide them with an independently developed assessment capability. This paper summarizes that study, which comprised a review of contemporary models, the development of a new conceptual model, SSPAM14C, and the application of SSPAM14C to a set of experimental data relating to the atmospheric exposure of cabbages.

show abstract

The Soil as Direct Source of Carbon Dioxide for Ordinary Plants

Cited by 20 publications

References 10 publications

Compositional Changes in Foliage Phenolics with Plant Age, a Natural Experiment in Boreal Forests

Compositional Changes in Foliage Phenolics with Plant Age, a Natural Experiment in Boreal Forests

Soil CO₂ concentration does not affect growth or root respiration in bean or citrus

Soil-Plant-Atmosphere Modeling in the Context of Releases of ¹⁴C as a Consequence of Nuclear Activities

Contact Info

Product

Resources

About

The Soil as Direct Source of Carbon Dioxide for Ordinary Plants

Cited by 20 publications

References 10 publications

Compositional Changes in Foliage Phenolics with Plant Age, a Natural Experiment in Boreal Forests

Compositional Changes in Foliage Phenolics with Plant Age, a Natural Experiment in Boreal Forests

Soil CO2 concentration does not affect growth or root respiration in bean or citrus

Soil-Plant-Atmosphere Modeling in the Context of Releases of 14C as a Consequence of Nuclear Activities

Contact Info

Product

Resources

About

Soil CO₂ concentration does not affect growth or root respiration in bean or citrus

Soil-Plant-Atmosphere Modeling in the Context of Releases of ¹⁴C as a Consequence of Nuclear Activities