Abstract
In this study we investigated effects of Zn supply on germination, growth, inorganic solutes (Zn, Ca, Fe, and Mg) partitioning and nodulation of Medicago sativa This plant was cultivated with and without Zn (2 mM). Treatments were plants without (control) and with Zn tolerant strain (S532), Zn intolerant strain (S112) and 2 mM urea nitrogen fertilisation. Results showed that M. sativa germinates at rates of 50% at 2 mM Zn. For plants given nitrogen fertilisation, Zn increased plant biomass production. When grown with symbionts, Zn supply had no effect on nodulation. Moreover, plants with S112 showed a decrease of shoot and roots biomasses. However, in symbiosis with S532, an increase of roots biomass was observed. Plants in symbiosis with S. meliloti accumulated more Zn in their roots than nitrogen fertilised plants. Zn supply results in an increase of Ca concentration in roots of fertilised nitrogen plants. However, under Zn supply, Fe concentration decreased in roots and increased in nodules of plants with S112. Zn supply showed contrasting effects on Mg concentrations for plants with nitrogen fertilisation (increase) and plants with S112 (decrease). The capacity of M. sativa to accumulate Zn in their nodulated roots encouraged its use in phytostabilisation processes.
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Claims 12
Claim · model-written summary
M. sativa germinated at 50% under 2 mM Zn.
- Taxon
- M. sativa
Medicago sativae0 - Treatment
- 2 mM Zne0
- Outcome
- germinatese0
- Value
- 50%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“M. sativa germinates at rates of 50% at 2 mM Zn”
Claim · model-written summary
Zinc increased biomass in nitrogen fertilised plants.
Not reportedTaxonComparator
Verbatim
e0“For plants given nitrogen fertilisation, Zn increased plant biomass production”
Claim · model-written summary
Zinc did not affect nodulation in symbiotic plants.
Not reportedTaxonComparator
Verbatim
e0“When grown with symbionts, Zn supply had no effect on nodulation”
Claim · model-written summary
S112 plants had decreased shoot and root biomass.
Not reportedTaxon
Verbatim
e0“plants with S112 showed a decrease of shoot and roots biomasses”
Claim · model-written summary
S532 symbiosis increased root biomass.
Not reportedTaxon
Verbatim
e0“in symbiosis with S532, an increase of roots biomass was observed”
Claim · model-written summary
S. meliloti symbiotic plants accumulated more root zinc than nitrogen fertilised plants.
- Interactor
- S. meliloti
Sinorhizobium melilotie0symbiont - Outcome
- Zn in their rootse0
- Direction
- moree0
- Comparator
- nitrogen fertilised plantse0
Not reportedTaxon
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants in symbiosis with S. meliloti accumulated more Zn in their roots than nitrogen fertilised plants”
Claim · model-written summary
Zinc increased root calcium in nitrogen fertilised plants.
- Treatment
- Zn supplye0
- Outcome
- Ca concentration in rootse0
- Direction
- increasee0
- Qualifier
- fertilised nitrogen plantse0
Not reportedTaxonComparator
Verbatim
e0“Zn supply results in an increase of Ca concentration in roots of fertilised nitrogen plants”
Claim · model-written summary
Under zinc, S112 plants had decreased root iron.
- Organ / stage
- rootse0
- Treatment
- Zn supplye0
- Interactor
- S112e0symbiont
- Outcome
- Fe concentratione0
- Direction
- decreasede0
Not reportedTaxon
Verbatim
e0“under Zn supply, Fe concentration decreased in roots and increased in nodules of plants with S112”
Claim · model-written summary
Under zinc, S112 plants had increased nodule iron.
- Organ / stage
- nodulese0
- Treatment
- Zn supplye0
- Interactor
- S112e0symbiont
- Outcome
- Fe concentratione0
- Direction
- increasede0
Not reportedTaxon
Verbatim
e0“under Zn supply, Fe concentration decreased in roots and increased in nodules of plants with S112”
Claim · model-written summary
Zinc increased magnesium in nitrogen fertilised plants.
Not reportedTaxonComparator
Verbatim
e0“Zn supply showed contrasting effects on Mg concentrations for plants with nitrogen fertilisation (increase)”
Claim · model-written summary
Zinc decreased magnesium in S112 plants.
Not reportedTaxonComparator
Verbatim
e0“Zn supply showed contrasting effects on Mg concentrations for plants with nitrogen fertilisation (increase) and plants with S112 (decrease)”
Claim · model-written summary
The authors proposed M. sativa for zinc phytostabilisation.
- Taxon
- M. sativaMedicago sativae0
- Outcome
- use in phytostabilisation processese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The capacity of M. sativa to accumulate Zn in their nodulated roots encouraged its use in phytostabilisation processes”
The same questions in other papers
zinc atom · yield · Medicago sativa (alfalfa)Results differ
15 papers in the same direction as this paper · 5 in the opposite direction
- negative
- no effect
- no effect
17 papers more in this group
See all 21 papers →zinc atom · symbiosis · Medicago sativa (alfalfa)Positive and negative results
2 in the opposite direction
- positive
- positive
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.