Abstract
Of the many nutrients essential for normal growth and development of plants, calcium occupies a unique position both chemically and functionally. As excess calcium is toxic to plants the sequestering of incoming calcium as calcium oxalate in epidermal trichomes has been studied in calcicoles from high calcium enriched environments. Much less is known about the patterns of variation in root structure in calcicoles, calcifuges and non-calcicoles in response to elevated levels of rhizospheric calcium. Six ecotypes of Arabidopsis thaliana, comprising the putative calcicole, Cal-0, the non-calcicole, Col-4 and four accessions collected from the wild were subjected to concentrations of rhizospheric calcium ranging from nil to 30 mM. The pattern of root growth, particularly lateral root formation and growth, varied in all the ecotypes according to the concentration of external calcium. In addition, the Glenisla, putative non-calcicole accession displayed a marked reduction in primary root growth at high rhizospheric calcium. In depth analysis of the root structure and morphology is in process. Glenisla also showed a marked difference in fresh weight of both shoots and roots and the shoot to root ratio in comparison to the other ecotypes.
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Claims 3
Claim · model-written summary
The pattern of root growth, including lateral root formation, varied among Arabidopsis ecotypes with external calcium concentration.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae0 - Treatment
- concentration of external calciume2
- Outcome
- root growth, particularly lateral root formation and growthe2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Six ecotypes of Arabidopsis thaliana”
e1“concentrations of rhizospheric calcium ranging from nil to 30 mM”
e2“The pattern of root growth, particularly lateral root formation and growth, varied in all the ecotypes according to the concentration of external calcium”
Claim · model-written summary
The Glenisla accession showed a marked reduction in primary root growth at high rhizospheric calcium.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Material
- Glenislae3
- Treatment
- high rhizospheric calciume3
- Outcome
- primary root growthe3
- Direction
- reductione3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Six ecotypes of Arabidopsis thaliana”
e3“the Glenisla, putative non-calcicole accession displayed a marked reduction in primary root growth at high rhizospheric calcium”
Claim · model-written summary
Glenisla differed markedly from the other ecotypes in shoot and root fresh weight and in shoot to root ratio.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae0
- Material
- Glenislae4
- Outcome
- fresh weight of both shoots and roots and the shoot to root ratioe4
- Comparator
- other ecotypese4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Six ecotypes of Arabidopsis thaliana”
e4“Glenisla also showed a marked difference in fresh weight of both shoots and roots and the shoot to root ratio in comparison to the other ecotypes”
The same questions in other papers
calcium atom · growth · Arabidopsis thaliana (thale cress)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.