Abstract
The interactions between white clove(rTrifolium repens L.)and Rhizobium strains were tested in order to identify the effectiveness of biological nitrogen fixation in relation to water supply, as well as the possibility to predict strain effectiveness according to genotype.Nine Rhizobium strains of R.trifolii were isolated from Trifolium repens L.and Trifolium fragiferum L.from different areas in southern China.White clove(rcv Reventel)was planted in pots, nodulated with the nine strains, and grown in a greenhouse with the same amount of irrigation water.Foliage was harvested 8 and 12 weeks after sowing.Significant increases in foliar nitrogen, up to three-fold those of the control, were observed in plants inoculated with the three most effective strains.It was possible to predict the effectiveness of a rhizobial strain from its genotype.Symbiotic nitrogen fixation was more related to the genotype of the rhizobial strain than to host-specific.Once nitrogen was no longer a limiting factor, foliar biomass of all treatments was growing rapidly, leading to increased depletion of soil water.After cyclic moderate drought stress, white clover foliar biomass accumulation was more affected than foliar nitrogen content.The feedback of drought stress on foliar growth may be a new limiting factor when nitrogen demand is met satisfied in plants with the clover-Rhizobium interactions by N2 fixation.
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Claims 5
Claim · model-written summary
The three most effective inoculated strains increased clover foliar nitrogen up to threefold versus control.
- Taxon
- White Clover
Trifolium repenst0 - Treatment
- inoculated with the three most effective strainse0
- Outcome
- foliar nitrogene0
- Direction
- increasese0
- Value
- up to three-folde0
- Comparator
- the controle0
RhizobiumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant increases in foliar nitrogen, up to three-fold those of the control, were observed in plants inoculated with the three most effective strains.”
e1“Rhizobium strains of R.trifolii”
t0“White Clover”
Claim · model-written summary
Rhizobial genotype predicted strain effectiveness.
- Taxon
- White CloverTrifolium repenst0
- Interactor
- rhizobial straine0symbiont
- Outcome
- effectiveness of a rhizobial straine0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was possible to predict the effectiveness of a rhizobial strain from its genotype.”
t0“White Clover”
Claim · model-written summary
Symbiotic nitrogen fixation was more related to rhizobial genotype than host specificity.
- Taxon
- White CloverTrifolium repenst0
- Interactor
- rhizobial straine0symbiont
- Outcome
- Symbiotic nitrogen fixatione0
- Direction
- more relatede0
- Comparator
- host-specifice0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Symbiotic nitrogen fixation was more related to the genotype of the rhizobial strain than to host-specific.”
t0“White Clover”
Claim · model-written summary
When nitrogen ceased to limit growth, foliar biomass grew rapidly and soil water depletion increased.
- Taxon
- White CloverTrifolium repenst0
- Outcome
- foliar biomasse0
- Direction
- growing rapidlye0
- Qualifier
- Once nitrogen was no longer a limiting factore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Once nitrogen was no longer a limiting factor, foliar biomass of all treatments was growing rapidly, leading to increased depletion of soil water.”
t0“White Clover”
Claim · model-written summary
Cyclic moderate drought affected clover foliar biomass accumulation more than foliar nitrogen content.
- Taxon
- white cloverTrifolium repense0
- Treatment
- cyclic moderate drought stresse0
- Outcome
- foliar biomass accumulatione0
- Direction
- more affectede0
- Comparator
- foliar nitrogen contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After cyclic moderate drought stress, white clover foliar biomass accumulation was more affected than foliar nitrogen content.”
The same questions in other papers
drought · growth · Trifolium repens (white clover)Results differ
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- positive
- positive
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See all 28 papers →inoculation · Rhizobium · Trifolium repens (white clover)Results agree
2 papers in the same direction as this paper
- 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.