Intercropping can increase the biomass of plants and reduce the accumulation of heavy metals in plants. However, the mechanisms of intercropping increasing plant biomass and resistance to heavy metals are still unclear. Therefore, the pot experiment had been conducted to investigate the effect of intercropping treatment on the growth of gramineous pasture ryegrass (Lolium perenne L.) and leguminous forage alfalfa (Medicago sativa L.) in metal-contaminated soil. Our results showed that intercropping alleviated inhibition of heavy metals to plant growth and increased nitrogen and chlorophyll contents in the shoots and roots. Moreover, the Pb concentrations in the shoots and roots of ryegrass and alfalfa in the intercropping were significantly lower than those in the monoculture. And, the contents of saccharase and alkaline phosphatase were significantly increased in the intercropping treatment. Additionally, the intercropping treatment could reduce the oxidative damage and increase enzymatic antioxidant activities to improve the resistance of plants in contaminated soil. The intercropping treatment can increase the resistance of plants to heavy metals through reduction of plant oxidative damage and increase of antioxidant activity. It could provide us with a strategy that intercropping of ryegrass and alfalfa can increase biomass and reduce the absorption of Pb on forage plants.
Intercropping of Gramineous Pasture Ryegrass (Lolium perenne L.) and Leguminous Forage Alfalfa (Medicago sativa L.) Increases the Resistance of Plants to Heavy Metals
Tuantuan Cui,Linchuan Fang,Mengke Wang,Mao Jiang,Guoting Shen
Published 2018 in Journal of chemistry
ABSTRACT
PUBLICATION RECORD
- Publication year
2018
- Venue
Journal of chemistry
- Publication date
2018-07-05
- Fields of study
Agricultural and Food Sciences, Chemistry, Environmental Science
- Identifiers
- External record
- Source metadata
Semantic Scholar
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- alfalfa
The leguminous forage species Medicago sativa L. examined as one of the forage plants.
Aliases: Medicago sativa L.
- alkaline phosphatase
A phosphatase enzyme measured in the experiment as part of soil biochemical activity.
Aliases: ALP
- chlorophyll
The green photosynthetic pigment measured in plant tissues as part of the physiological assessment.
- enzymatic antioxidant activities
The activity of antioxidant enzymes that help plants detoxify reactive oxygen species.
Aliases: antioxidant enzyme activities
- heavy metals
Metal contaminants present in the soil and used as the stress context for evaluating plant growth and physiology.
Aliases: metal contamination
- intercropping treatment
A planting arrangement in which ryegrass and alfalfa are grown together in the same pot system.
Aliases: intercropping
- metal-contaminated soil
The potting soil containing heavy metals in which ryegrass and alfalfa were grown.
Aliases: contaminated soil
- nitrogen
A plant nutrient quantified in shoots and roots as an indicator of plant nutritional status.
Aliases: N
- oxidative damage
Damage to plant tissues associated with oxidative stress and reactive oxygen species.
- ryegrass
The gramineous pasture species Lolium perenne L. examined as one of the forage plants.
Aliases: Lolium perenne L.
- saccharase
A soil enzyme assayed in the experiment as part of the rhizosphere biochemical profile.
Aliases: sucrase
REFERENCES
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