Abstract
Abstract This study addresses the need to determine accurately mineral element concentrations in roots grown in soil so that valid measurements of element uptake and translocation can be made. Wheat (Triticum aestivum L., cv ‘Nugains') was planted in seven soils. Two seeds were planted in each soil and two seeds were planted in a Versapor bag that had been buried in the soil in the same 1.3‐L ceramic pot. The bag separated the roots from soil. The plants were harvested four weeks after planting. Tops and roots were analyzed separately for 12 elements. Estimates were made for the contribution of each element from soil particles contained in the sampled portion, by using the titanium (Ti) concentration in root sample as a measure of contamination by soil. Concentration corrections ranged from an increase of 14% for Na to a decrease of 131% for Al. Corrected estimates of Al and Fe concentrations in the sample portion were usually unreasonably high or low. In most cases, corrected concentration estimates appeared to be reasonable for most elements. Roots grown within Versapor bags do not appear to be particularly good models of roots growing freely in soil, with respect to root tissue element concentration.
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Claims 5
Claim · model-written summary
Soil-contamination corrections increased estimated root Na concentration by 14%.
- Taxon
- Wheat
Triticum aestivume1 - Material
- Nugainse1
- Organ / stage
- Rootse2
- Treatment
- Concentration correctionse0
- Outcome
- Nae0
- Direction
- increasee0
- Value
- 14%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentration corrections ranged from an increase of 14% for Na to a decrease of 131% for Al.”
e1“Wheat (Triticum aestivum L., cv ‘Nugains') was planted in seven soils.”
e2“Roots grown within Versapor bags do not appear to be particularly good models of roots growing freely in soil, with respect to root tissue element concentration.”
Claim · model-written summary
Soil-contamination corrections decreased estimated root Al concentration by 131%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Concentration corrections ranged from an increase of 14% for Na to a decrease of 131% for Al.”
e1“Wheat (Triticum aestivum L., cv ‘Nugains') was planted in seven soils.”
Claim · model-written summary
Corrected Al and Fe concentrations were usually implausibly high or low.
- Taxon
- WheatTriticum aestivume1
- Outcome
- Al and Fe concentrationse0
- Qualifier
- usually unreasonably high or lowe0
- Comparator
- Al and Fee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corrected estimates of Al and Fe concentrations in the sample portion were usually unreasonably high or low.”
e1“Wheat (Triticum aestivum L., cv ‘Nugains') was planted in seven soils.”
Claim · model-written summary
Corrected concentration estimates appeared reasonable for most elements in most cases.
- Taxon
- WheatTriticum aestivume1
- Outcome
- corrected concentration estimatese0
- Qualifier
- In most casese0
- Comparator
- most elementse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In most cases, corrected concentration estimates appeared to be reasonable for most elements.”
e1“Wheat (Triticum aestivum L., cv ‘Nugains') was planted in seven soils.”
Claim · model-written summary
Roots grown in Versapor bags were poor models of freely soil-grown roots for tissue element concentration.
- Taxon
- WheatTriticum aestivume1
- Treatment
- Versapor bagse0
- Outcome
- root tissue element concentratione0
- Comparator
- roots growing freely in soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Roots grown within Versapor bags do not appear to be particularly good models of roots growing freely in soil, with respect to root tissue element concentration.”
e1“Wheat (Triticum aestivum L., cv ‘Nugains') was planted in seven soils.”