Abstract
Arsenic (As) is one of the most common inorganic pollutants; unfortunately, it is also one of the most toxic and is therefore a cause of great concern for the health risks that could result from it. Removing arsenic from the soil using phytoremediation approaches is an effective strategy, and several studies demonstrate the ability of Cannabis sativa (TSN 19109, hemp) to tolerate this harmful contaminant. The aim of this work was to identify the best experimental conditions for a phytoremediation plan to be applied in a disused area located in Sicily (Italy) and contaminated by As, comparing Cannabis sativa with Brassica juncea (TSN 23059) and Zea mays (TSN 42269, corn). To assist the process, several chelating agents were tested to improve arsenic mobility, and two different sets of arsenic-tolerant bacteria were isolated from the rhizospheric soil of indigenous herbaceous species and used to promote plant growth, leading to a significant improvement in terms of biomass produced and phytoextraction. After the combined treatment, the arsenic content in the aerial part of the plants increased by more than two orders of magnitude (e.g., from 0.05 to 6.57 mg kg−1, from 0.04 to 6.69 mg kg−1, and from 0.03 to 5.57 mg kg−1 for brassica, corn, and hemp, respectively), confirming the marked increase in the total absorption of As by plants.
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Claims 4
Claim · model-written summary
After the combined treatment, aerial arsenic content of Brassica juncea rose to 6.57 mg kg-1 from 0.05.
- Taxon
- Brassica juncea
Brassica junceae2 - Organ / stage
- aerial parte1
- Treatment
- combined treatmente1
- Outcome
- arsenic content in the aerial parte1
- Direction
- increasede1
- Value
- 6.57 mg kg−1e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“After the combined treatment, the arsenic content in the aerial part of the plants increased by more than two orders of magnitude (e.g., from 0.05 to 6.57 mg kg−1, from 0.04 to 6.69 mg kg−1, and from 0.03 to 5.57 mg kg−1 for brassica, corn, and hemp, respectively)”
e2“comparing Cannabis sativa with Brassica juncea (TSN 23059) and Zea mays (TSN 42269, corn)”
Claim · model-written summary
After the combined treatment, aerial arsenic content of Zea mays rose to 6.69 mg kg-1 from 0.04.
- Organ / stage
- aerial parte1
- Treatment
- combined treatmente1
- Outcome
- arsenic content in the aerial parte1
- Direction
- increasede1
- Value
- 6.69 mg kg−1e1
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“After the combined treatment, the arsenic content in the aerial part of the plants increased by more than two orders of magnitude (e.g., from 0.05 to 6.57 mg kg−1, from 0.04 to 6.69 mg kg−1, and from 0.03 to 5.57 mg kg−1 for brassica, corn, and hemp, respectively)”
e2“comparing Cannabis sativa with Brassica juncea (TSN 23059) and Zea mays (TSN 42269, corn)”
Claim · model-written summary
After the combined treatment, aerial arsenic content of Cannabis sativa rose to 5.57 mg kg-1 from 0.03.
- Taxon
- Cannabis sativa
Cannabis sativae2 - Organ / stage
- aerial parte1
- Treatment
- combined treatmente1
- Outcome
- arsenic content in the aerial parte1
- Direction
- increasede1
- Value
- 5.57 mg kg−1e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“After the combined treatment, the arsenic content in the aerial part of the plants increased by more than two orders of magnitude (e.g., from 0.05 to 6.57 mg kg−1, from 0.04 to 6.69 mg kg−1, and from 0.03 to 5.57 mg kg−1 for brassica, corn, and hemp, respectively)”
e2“comparing Cannabis sativa with Brassica juncea (TSN 23059) and Zea mays (TSN 42269, corn)”
Claim · model-written summary
Inoculation with two sets of arsenic-tolerant rhizospheric bacteria significantly improved biomass and phytoextraction in the plants studied.
- Taxon
- Cannabis sativaCannabis sativae2
- Treatment
- two different sets of arsenic-tolerant bacteriae3
- Interactor
- arsenic-tolerant bacteriae3symbiont
- Outcome
- biomass produced and phytoextractione3
- Direction
- improvemente3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“comparing Cannabis sativa with Brassica juncea (TSN 23059) and Zea mays (TSN 42269, corn)”
e3“two different sets of arsenic-tolerant bacteria were isolated from the rhizospheric soil of indigenous herbaceous species and used to promote plant growth, leading to a significant improvement in terms of biomass produced and phytoextraction”
The same questions in other papers
inoculation · growth · Cannabis sativaPositive and negative results
4 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
3 papers more in this group
See all 7 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.