Abstract
Appalachian hill-land soils are acidic and have high levels of exchangeable Al that limit utilization of many commercially available forage species such as alfalfa. A comparison of native alfalfa plants collected from such environments (OK-1), survivors from seedings to such environments (Elkins), and Al-sensitive plants of a commercial variety (ARC) will indicate whether biochemical constituents confer Al tolerance. Plants propagated vegetatively from each variety have been cultured in nutrient solution under optimal conditions (0 Al, pH 6.5) or stressed with 90, 130, or 170 ..mu..M Al at pH 4.5 for 2 weeks. Results show that OK-1 was the most tolerant variety, based on fresh weights of roots and shoots, leaf number, root length, and protein concentration. ARC was sensitive to high Al concentrations while Elkins was intermediate in its response. Roots and leaves of the Al-sensitive variety also possessed a unique, 27 kD polypeptide that disappeared upon exposure of the plants to high levels of Al. These results lay the foundation for further biochemical analyses and subsequent development and release of an alfalfa variety for acid soils.
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Claims 4
Claim · model-written summary
OK-1 was the most aluminum-tolerant variety by growth and protein measures.
- Taxon
- alfalfa
Medicago sativat0 - Material
- OK-1e0
- Outcome
- most tolerant varietye0
- Direction
- most tolerante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“OK-1 was the most tolerant variety, based on fresh weights of roots and shoots, leaf number, root length, and protein concentration”
t0“alfalfa plants”
Claim · model-written summary
ARC was sensitive to high aluminum concentrations.
- Taxon
- alfalfaMedicago sativat0
- Material
- ARCe0
- Outcome
- sensitive to high Al concentrationse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ARC was sensitive to high Al concentrations while Elkins was intermediate in its response”
t0“alfalfa plants”
Claim · model-written summary
Elkins showed intermediate aluminum response.
- Taxon
- alfalfaMedicago sativat0
- Material
- Elkinse0
- Outcome
- intermediate in its responsee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ARC was sensitive to high Al concentrations while Elkins was intermediate in its response”
t0“alfalfa plants”
Claim · model-written summary
A unique 27 kD polypeptide in ARC roots and leaves disappeared after high aluminum exposure.
- Taxon
- alfalfaMedicago sativat0
- Material
- Al-sensitive varietye0
- Organ / stage
- Roots and leavese0
- Treatment
- high levels of Ale0
- Gene
- polypeptidee0
- Outcome
- polypeptidee0
- Direction
- disappearede0
- Value
- 27 kDe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Roots and leaves of the Al-sensitive variety also possessed a unique, 27 kD polypeptide that disappeared upon exposure of the plants to high levels of Al”
t0“alfalfa plants”
The same questions in other papers
aluminium atom · molecular: metabolites · Medicago sativa (alfalfa)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
1 paper more in this group
See all 5 papers →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.