Abstract
A 60-day pot experiment was carried out using di-(2-ethylhexyl) phthalate (DEHP) as a typical organic pollutant phthalic ester and cowpea (Vigna sinensis) as the host plant to determine the effect of arbuscular mycorrhizal inoculation on plant growth and degradation of DEHP in two contaminated soils, a yellow-brown soil and a red soil. The air-dried soils were uniformly sprayed with different concentrations of DEHP, inoculated or left uninoculated with an arbuscular mycorrhizal (AM) fungus, and planted with cowpea seeds. After 60 days the positive impact of AM inoculation on the growth of cowpea was more pronounced in the red soil than in the yellow-brown soil, with significantly higher (P 0.01) mycorrhizal colonization rate, shoot dry weight and total P content in shoot tissues for the red soil. Both in the yellow-brown and red soils, AM inoculation significantly (P 0.01) reduced shoot DEHP content, implying that AM inoculation could inhibit the uptake and translocation of DEHP from roots to the aboveground parts. However, with AM inoculation no positive contribution to the degradation of DEHP was found.
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Claims 4
Claim · model-written summary
Mycorrhizal inoculation improved cowpea growth more in red soil than yellow-brown soil.
- Taxon
- cowpea
Vigna unguiculatae0 - Treatment
- AM inoculatione0
- Interactor
- AMe0symbiont
- Outcome
- growthe0
- Direction
- more pronouncede0
- Comparator
- yellow-brown soile0
- Setting
- red soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the positive impact of AM inoculation on the growth of cowpea was more pronounced in the red soil than in the yellow-brown soil”
Claim · model-written summary
Mycorrhizal colonization, shoot dry weight and shoot total P were significantly higher in red soil.
- Taxon
- cowpeaVigna unguiculatat0
- Outcome
- mycorrhizal colonization rate, shoot dry weight and total P content in shoot tissuese0
- Direction
- highere0
- Setting
- red soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with significantly higher (P 0.01) mycorrhizal colonization rate, shoot dry weight and total P content in shoot tissues for the red soil.”
t0“cowpea (Vigna sinensis)”
Claim · model-written summary
AM inoculation significantly reduced shoot DEHP content in both soils.
- Treatment
- AM inoculatione0
- Interactor
- AMe0symbiont
- Outcome
- shoot DEHP contente0
- Direction
- reducede0
- Setting
- yellow-brown and red soilse0
Not reportedTaxonComparator
Verbatim
e0“Both in the yellow-brown and red soils, AM inoculation significantly (P 0.01) reduced shoot DEHP content”
Claim · model-written summary
AM inoculation did not improve DEHP degradation.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- AM inoculatione0
- Interactor
- AMe0symbiont
- Outcome
- degradation of DEHPe0
- Direction
- no positive contributione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with AM inoculation no positive contribution to the degradation of DEHP was found.”
t0“cowpea (Vigna sinensis)”
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