Abstract
Faba bean (Vicia faba L.) is a carboxylate-exuding legume that enhances the phosphorus (P) nutrition of subsequently grown cereals. In an earlier study we found variation in soil P acquisition among 50 faba bean genotypes, but little is known about the rhizosphere processes that may contribute to P efficiency and whether these processes impact on the growth of subsequent cereal crops. In this study, we investigated rhizosphere dynamics (P fractions depleted, pH and carboxylate exudation) in three P-inefficient and five P-efficient faba bean genotypes in a glasshouse study on soils differing in P dynamics. The results suggest that P efficiency in the acidic soil was not driven by rhizosphere processes, consistent with earlier findings that root growth parameters contributed to P efficiency in this soil. In contrast, in the alkaline soil the most P-efficient genotypes had the highest malate exudation, which might enhance P solubilisation. For the first time, we showed a faba bean genotype-specific enhancement of growth and P uptake of subsequently grown wheat plants. This genotypic variation could be exploited to further increase the benefit of faba beans in rotation with wheat on P-limited soils.
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Claims 5
Claim · model-written summary
In acidic soil, faba bean phosphorus efficiency was not driven by rhizosphere processes.
- Taxon
- Vicia faba L.
Vicia fabae1 - Outcome
- P efficiencye0
- Qualifier
- not driven by rhizosphere processese0
- Setting
- acidic soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P efficiency in the acidic soil was not driven by rhizosphere processes”
e1“Faba bean (Vicia faba L.)”
Claim · model-written summary
In alkaline soil, the most phosphorus-efficient faba bean genotypes had the highest malate exudation.
- Taxon
- Vicia faba L.Vicia fabae1
- Material
- most P-efficient genotypese0
- Outcome
- malate exudatione0
- Direction
- higheste0
- Setting
- alkaline soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in the alkaline soil the most P-efficient genotypes had the highest malate exudation”
e1“Faba bean (Vicia faba L.)”
Claim · model-written summary
Faba bean genotype enhanced the growth of subsequently grown wheat.
- Taxon
- wheat
Triticum aestivume0 - Treatment
- faba bean genotype-specifice0
- Outcome
- growthe0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a faba bean genotype-specific enhancement of growth and P uptake of subsequently grown wheat plants”
Claim · model-written summary
Faba bean genotype enhanced phosphorus uptake of subsequently grown wheat.
- Taxon
- wheatTriticum aestivume0
- Treatment
- faba bean genotype-specifice0
- Outcome
- P uptakee0
- Direction
- enhancemente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a faba bean genotype-specific enhancement of growth and P uptake of subsequently grown wheat plants”
Claim · model-written summary
The authors suggest exploiting faba bean genotypic variation to increase rotational benefits for wheat on phosphorus-limited soils.
- Taxon
- faba beansVicia fabae0
- Outcome
- increase the benefit of faba beans in rotation with wheate0
- Qualifier
- P-limited soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This genotypic variation could be exploited to further increase the benefit of faba beans in rotation with wheat on P-limited soils.”
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