Bioplastic (PHBV) addition to soil alters microbial community structure and negatively affects plant-microbial metabolic functioning in maize

Brown, Robert W.; Chadwick, David R.; Zang, Huadong; Graf, Martine; Liu, Xuejun; Wang, Kai; Greenfield, Lucy M.; Jones, Davey L.

doi:10.1016/j.jhazmat.2022.129959

Cited by 71 publications

(19 citation statements)

References 102 publications

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“…Corn appears to be a particularly sensitive species to biodegradable plastics such as polybutylene adipate terephthalate (PBAT) and polylactic acid (PLA), as indicated by reduced root and shoot growth [ 73 , 74 ]. Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) PHBV, a microbial biopolymer with excellent biocompatibility and biodegradability, has been shown to negatively impact corn root and shoot growth in soil [ 90 ]. Furthermore, pot experiments with basil ( Ocimum basilicum L.), sand couch-grass, and ice plant plants have demonstrated that biodegradable plastics such as corn-starch-based bioplastic and starch-based polymers inhibited root and shoot growth [ 81 , 91 ].…”

Section: Effects Of Plastics On Plant Developmentmentioning

confidence: 99%

Impacts of Plastics on Plant Development: Recent Advances and Future Research Directions

Mészáros,

Bodor,

Kovács

et al. 2023

Plants

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Plastics have inundated the world, with microplastics (MPs) being small particles, less than 5 mm in size, originating from various sources. They pervade ecosystems such as freshwater and marine environments, soils, and the atmosphere. MPs, due to their small size and strong adsorption capacity, pose a threat to plants by inhibiting seed germination, root elongation, and nutrient absorption. The accumulation of MPs induces oxidative stress, cytotoxicity, and genotoxicity in plants, which also impacts plant development, mineral nutrition, photosynthesis, toxic accumulation, and metabolite production in plant tissues. Furthermore, roots can absorb nanoplastics (NPs), which are then distributed to stems, leaves, and fruits. As MPs and NPs harm organisms and ecosystems, they raise concerns about physical damage and toxic effects on animals, and the potential impact on human health via food webs. Understanding the environmental fate and effects of MPs is essential, along with strategies to reduce their release and mitigate consequences. However, a full understanding of the effects of different plastics, whether traditional or biodegradable, on plant development is yet to be achieved. This review offers an up-to-date overview of the latest known effects of plastics on plants.

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Section: Effects Of Plastics On Plant Developmentmentioning

confidence: 99%

Impacts of Plastics on Plant Development: Recent Advances and Future Research Directions

Mészáros,

Bodor,

Kovács

et al. 2023

Plants

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“…Similarly, Qi et al [ 24 ] showed that wheat plants treated with 1% biodegradable macro- and micro- starch-based BP had a reduced vegetative growth. Brown et al [ 20 ], Graf et al [ 44 ], and Liu et al [ 45 ] also mentioned the negative effects of biodegradable plastic on plant growth in maize. Serrano-Ruiz et al [ 46 ] investigated different types of plastic and bioplastic mulches and showed a decrease in the amount of biomass and vegetative growth and a shrinking of the leaves in lettuce and tomato plants.…”

Section: Discussionmentioning

confidence: 99%

“…Nevertheless, there is a knowledge gap on the consequences of gradually increasing concentrations of BP in the soil on crop plant growth and productivity. The physiological and biochemical responses of cultivated plants to the presence of the residues, derived from the degradation of these biomaterials, are not sufficiently understood; moreover, these responses are variable, depending on the origin, composition, size, and thickness, as well as the concentration of BP in the soil [ 20 ]. On the one hand, some studies [ 21 , 22 , 23 ] have observed neutral effects of BP residues on plant growth; on the other hand, other studies [ 24 , 25 , 26 , 27 , 28 ] have observed negative effects.…”

Section: Introductionmentioning

confidence: 99%

Dose-Dependent Effects of a Corn Starch-Based Bioplastic on Basil (Ocimum basilicum L.): Implications for Growth, Biochemical Parameters, and Nutrient Content

Azarnejad,

Celletti,

Ghorbani

et al. 2024

Toxics

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Plastic pollution is a pressing global issue, prompting the exploration of sustainable alternatives such as bioplastics (BPs). In agriculture, BPs have gained relevance as mulching films. This study investigated the effect of the presence in the soil of different concentrations (0–3%, w/w) of a corn starch-based bioplastic on basil (Ocimum basilicum L.). The results showed that increasing bioplastic concentration reduced shoot fresh biomass production. Biochemical analyses revealed changes in the shoot in soluble protein content, biomarkers of oxidative and osmotic stress (malondialdehyde and proline, respectively), anti-radical activity, and antioxidant compounds (phenols, flavonoids, and ascorbic acid), which are indicative of plant adaptive mechanisms in response to stress caused by the presence of the different concentrations of bioplastic in the soil. Macro- and micronutrient analysis showed imbalances in nutrient uptake, with a decreased content of potassium, phosphorus, and manganese, and an increased content of magnesium, iron, and copper in the shoot at high BP concentrations.

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“…The suppression of microbial activity and reduced level of bacterial diversity alters the overall metabolic pathway of the soil. Brown et al, 2023 1% (w/w) Bio macroplastics; 1% (w/w) Bio microplastics…”

Section: Discussionmentioning

confidence: 99%

A review of soil pollution from LDPE mulching films and the consequences of the substitute biodegradable plastic on soil health

Bandyopadhyay,

Sinha,

Thakur

et al. 2023

IJERR

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The plastic film mulching system has a significant role in increasing crop grain yields by changing the microenvironment of the plant. On the other hand, plastic mulching materials pollute the land and water because they are not degraded or disposed of properly. Biodegradable plastic mulches (BPM) may be used as a substitute for conventional low-density polyethylene (LDPE) to protect soil health. In this review, the effect of micro(nano)plastics on soil health and function has been discussed in light of their distribution in soil, changes in soil biochemistry, interactions between microplastics with soil microbes and plants, and their growth patterns. The nano-plastics are now incorporated into the food chain from the soil through plants and finally harm the whole ecosystem, including humans. The use of BPM has been practiced recently, but only 1% of the world’s total plastic production is from biodegradable materials. In the second part of the review, the confusing terms "bio-based" and "biodegradable" were clarified based on their polymeric constituents. The physical parameters of different constituent materials for mulching purposes and their capability for sustainable solarization have been discussed. The effect of biodegradable mulches on soil health and other ecotoxic effects on plants, soil microorganisms, and other soil dwellers like Daphnia magna, Vibrio fischeri bacteria, green algae, slime mould, protozoa, invertebrates like earthworms, and common water fleas have been focused on in this review. In conclusion, the use of BPM for mulching purposes was reported to improve crop quality and yield and reduce weed growth in comparison to naked soil. The recent short-term studies ensured that mulches stayed unbroken throughout the growing season. But simultaneously, the biodegradable mulches affect soil health and have a substantial impact on physical parameters such as soil pH, electrical conductivity, aggregate stability, infiltration, nitrate-N, exchangeable potassium, etc. Therefore, a lot of long-term research is required for the use of BPM as a substitute for conventional LDPE as a mulching film in the agricultural field.

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Bioplastic (PHBV) addition to soil alters microbial community structure and negatively affects plant-microbial metabolic functioning in maize

Cited by 71 publications

References 102 publications

Impacts of Plastics on Plant Development: Recent Advances and Future Research Directions

Impacts of Plastics on Plant Development: Recent Advances and Future Research Directions

Dose-Dependent Effects of a Corn Starch-Based Bioplastic on Basil (Ocimum basilicum L.): Implications for Growth, Biochemical Parameters, and Nutrient Content

A review of soil pollution from LDPE mulching films and the consequences of the substitute biodegradable plastic on soil health

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