Abstract
Understanding the combined effects of soil amendments and inoculation of mycorrhizal fungi on the response of different plant species during the phytostabilization process of trace elements contaminated soils is a challenge. This task is more difficult but more realistic when studied under field conditions. We assess the combined effects of two amendment doses and mycorrhizal inoculation on the response of saplings of two tree species planted in a contaminated field. The amendments were a mix of sugar beet lime and biosolid compost. The inoculation treatments were made with a commercial inoculum of arbuscular mycorrhizal fungi for wild olive and ectomycorrhizal fungi for stone pine. Results showed a weak or null effect of the mycorrhizal inoculation on plant growth, survival and trace element accumulation. There was a significant increase on P nutrition for stone pine, growing on non-amended conditions. Soil amendments were very effective reducing trace elements availability and their accumulation in both plant species, especially in roots. However, the effects on plant biomass were species-dependent and contrasted; low-dose amendments increased the biomass of wild olive by 33.3%, but reduced by 28% that of pine. The high doses of amendments (60 T ha−1) produced some negative effects on plant growth and nutrition, probably related to the increase of soil salinity. Both plant species, stone pine and wild olive, have been proved to be adequate for phytostabilization of contaminated soils under Mediterranean climate, due to their drought tolerance and the low transfer of trace elements from root to shoot, thus reducing toxicity for the food web. To implement microbial-assisted phytoremediation approaches, a better understanding of the diversity and ecology of plant-associated microorganisms is needed. The use of indigenous fungi, locally adapted and tolerant to contamination, would be more suitable for phytostabilization purposes.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 9
Claim · model-written summary
Mycorrhizal inoculation had a weak or null effect on growth, survival and trace element accumulation of tree saplings.
- Taxon
- two tree speciese1
- Treatment
- mycorrhizal inoculatione2
- Interactor
- arbuscular mycorrhizal fungie3symbiont
- Second interactor
- ectomycorrhizal fungie3symbiont
- Outcome
- plant growth, survival and trace element accumulatione2
- Direction
- weak or null effecte2
Not reportedComparator
Verbatim
e1“the response of saplings of two tree species planted in a contaminated field”
e2“Results showed a weak or null effect of the mycorrhizal inoculation on plant growth, survival and trace element accumulation”
e3“The inoculation treatments were made with a commercial inoculum of arbuscular mycorrhizal fungi for wild olive and ectomycorrhizal fungi for stone pine”
Claim · model-written summary
Stone pine showed a significant increase in P nutrition when growing on non-amended conditions.
- Taxon
- stone pine
Pinus pineae4 - Outcome
- P nutritione4
- Direction
- increasee4
- Setting
- non-amended conditionse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“There was a significant increase on P nutrition for stone pine, growing on non-amended conditions”
Claim · model-written summary
Soil amendments reduced trace element availability and accumulation in both tree species, especially in roots.
- Taxon
- two tree speciese1
- Organ / stage
- rootse5
- Treatment
- Soil amendmentse5
- Outcome
- trace elements availability and their accumulatione5
- Direction
- reducinge5
Not reportedComparator
Verbatim
e1“the response of saplings of two tree species planted in a contaminated field”
e5“Soil amendments were very effective reducing trace elements availability and their accumulation in both plant species, especially in roots”
Claim · model-written summary
Low-dose amendments increased wild olive biomass by 33.3%.
- Taxon
- wild olive
Olea europaea var. sylvestrise6 - Treatment
- low-dose amendmentse6
- Outcome
- biomasse6
- Direction
- increasede6
- Value
- 33.3%e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“low-dose amendments increased the biomass of wild olive by 33.3%, but reduced by 28% that of pine”
Claim · model-written summary
Low-dose amendments reduced stone pine biomass by 28%.
PinusNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“low-dose amendments increased the biomass of wild olive by 33.3%, but reduced by 28% that of pine”
Claim · model-written summary
High doses of amendments (60 T ha−1) produced negative effects on tree growth and nutrition.
- Taxon
- two tree speciese1
- Treatment
- high doses of amendmentse7
- Outcome
- plant growth and nutritione7
- Direction
- negative effectse7
- Value
- 60 T ha−1e7
Not reportedComparator
Verbatim
e1“the response of saplings of two tree species planted in a contaminated field”
e7“The high doses of amendments (60 T ha−1) produced some negative effects on plant growth and nutrition, probably related to the increase of soil salinity”
Claim · model-written summary
The negative effects of high amendment doses are probably related to increased soil salinity.
Verbatim
e1“the response of saplings of two tree species planted in a contaminated field”
e7“The high doses of amendments (60 T ha−1) produced some negative effects on plant growth and nutrition, probably related to the increase of soil salinity”
Claim · model-written summary
Stone pine and wild olive are adequate for phytostabilization of contaminated soils under Mediterranean climate.
- Taxon
- stone pine and wild olivePinus pineaOlea europaea var. sylvestrise7
- Outcome
- adequate for phytostabilization of contaminated soilse7
- Setting
- under Mediterranean climatee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Both plant species, stone pine and wild olive, have been proved to be adequate for phytostabilization of contaminated soils under Mediterranean climate”
Claim · model-written summary
Indigenous fungi would be more suitable than introduced inoculants for phytostabilization with tree species.
Verbatim
e1“the response of saplings of two tree species planted in a contaminated field”
e6“The use of indigenous fungi, locally adapted and tolerant to contamination, would be more suitable for phytostabilization purposes”
The same questions in other papers
other · growth · PinusPositive and negative results
1 paper in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
3 papers more in this group
See all 7 papers →other · growth · Olea europaea (common olive)Results agree
19 papers in the same direction as this paper
- positive
- positive
- positive
16 papers more in this group
See all 20 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.