Longispora fulva sp. nov., isolated from a forest soil, and emended description of the genus Longispora

Shiratori-Takano, Hatsumi; Yamada, Koji; Beppu, Teruhiko; Uéda, Kenji

doi:10.1099/ijs.0.023531-0

Cited by 13 publications

(3 citation statements)

References 31 publications

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“…Members of the family Bacillaceae and of the genus Streptomyces may be involved in phosphate solubilization [93]. Longispora strains are capable of degrading proteins and starch [94]. As Glycomyces was revealed in the rhizosphere and in various plant parts as an endophyte [95,96], this organism may be expected to have a positive effect on plant growth.…”

Section: Prokaryotic Communitymentioning

confidence: 99%

Microbiological Activity during Co-Composting of Food and Agricultural Waste for Soil Amendment

2021

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This study aims to establish the relationship between ambient parameters and the diversity, composition, and function of microbial communities that predominate at each stage of the co-composting of food and agricultural waste. Culture-based and culture-independent methods were used to investigate the changes in the microbiota. The favorable conditions of high initial humidity and C/N ratio caused a decrease in the richness and biodiversity of the microbiota when such conditions existed. During the thermophilic stage, the total microbial number increased, and active mineralization of organic matter was carried out by members of the genera Bacillus, Caldibacillus, Aspergillus, and Penicillium. The fungal community was sensitive to drastic temperature changes. Byssochlamys dominated among fungi during the transition from the mesophilic to the thermophilic stage and during cooling. The biodiversity increased with time and was associated with the dynamics of germination and nitrification indices, so that the more diverse the microbial community, the higher the properties of compost that stimulate plant growth and development. The microbial community of the mature compost, together with mineral plant nutrients ready for consumption and humic compounds, make this compost a good soil additive.

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Section: Prokaryotic Communitymentioning

confidence: 99%

Microbiological Activity during Co-Composting of Food and Agricultural Waste for Soil Amendment

2021

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“…Longispora was abundant on day 90 and 120. Longispora fulfa tested positive in the starch hydrolysis assay [ 49 ]. Meanwhile, Bacillus and Nitrospira were abundant on day 120 .…”

Section: Resultsmentioning

confidence: 99%

Bacterial dynamics during the burial of starch-based bioplastic and oxo-low-density-polyethylene in compost soil

et al. 2022

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Background Plastic waste accumulation is one of the main ecological concerns in the past decades. A new generation of plastics that are easier to degrade in the environment compared to conventional plastics, such as starch-based bioplastics and oxo-biodegradable plastics, is perceived as a solution to this issue. However, the fate of these materials in the environment are unclear, and less is known about how their presence affect the microorganisms that may play a role in their biodegradation. In this study, we monitored the dynamics of bacterial community in soil upon introduction of commercial carrier bags claimed as biodegradable: cassava starch-based bioplastic and oxo-low-density polyethylene (oxo-LDPE). Each type of plastic bag was buried separately in compost soil and incubated for 30, 60, 90, and 120 days. Following incubation, soil pH and temperature as well as the weight of remaining plastics were measured. Bacterial diversity in soil attached to the surface of remaining plastics was analyzed using Illumina high-throughput sequencing of the V3-V4 region of 16SrRNA gene. Results After 120 days, the starch-based bioplastic weight has decreased by 74%, while the oxo-LDPE remained intact with only 3% weight reduction. The bacterial composition in soil fluctuated over time with or without the introduction of either type of plastic. While major bacterial phyla remained similar for all treatment in this study, different types of plastics led to different soil bacterial community structure. None of these bacteria were abundant continuously, but rather they emerged at specific time points. The introduction of plastics into soil increased not only the population of bacteria known for their ability to directly utilize plastic component for their growth, but also the abundance of those that may interact with direct degraders. Bacterial groups that are involved in nitrogen cycling also arose throughout burial. Conclusions The introduction of starch-based bioplastic and oxo-LDPE led to contrasting shift in soil bacterial population overtime, which may determine their fate in the environment.

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“…Longispora was abundant on day 90 and 120. Longispora fulfa tested positive in starch hydrolysis assay [35]. Meanwhile, Longispora, Bacillus, and Nitrospira were abundant on day 120.…”

Section: Bacterial Community In Compost Soil Introduced With Starch-b...mentioning

confidence: 97%

Bacterial Dynamics During the Degradation of Starch-based Bioplastic and Oxo- degradable Plastic in Compost Soil

Wicaksono

Purwadaria

Yulandi

et al. 2022

Preprint

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Background: Plastic waste accumulation is one of the main ecological concerns in the past decades. A new generation of plastics that are easier to degrade in the environment compared to conventional plastics, such as starch-based bioplastic and oxo-degradable plastic, is perceived as a solution to this issue. However, the main degraders of such materials and their fate in the environment are unclear. In this study, we monitored the dynamics of bacterial community in soil upon introduction of commercial starch-based bioplastic and oxo-degradable plastic. The plastics were buried separately in compost soil and incubated for 30, 60, 90, and 120 days. Following incubation, soil pH and temperature as well as the weight of remaining plastics were measured. Bacterial diversity in soil surrounding the plastics was analyzed using Illumina high-throughput sequencing of the V3-V4 region of 16SrDNA. Results: Starch-based bioplastic degraded quicker than oxo-degradable plastic in soil. The bacterial composition in soil fluctuated over time with or without the introduction of either type of plastic. While the major bacterial phyla remained similar for all treatment in this study, different types of plastics led to different soil bacterial community structure. None of these bacteria were abundant continuously, but rather they emerged at specific time points. The introduction of plastics into soil increased not only the population of bacteria with the ability to directly utilize plastic component for their growth, but also the abundance of those that may interact with direct degraders. Interestingly, there were no specific genera that were prevalent throughout the burial period. Conclusions: The degradation of both starch-based bioplastic and oxo-degradable plastic involves a complex set of bacteria that continues to shift over time.

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Longispora fulva sp. nov., isolated from a forest soil, and emended description of the genus Longispora

Cited by 13 publications

References 31 publications

Microbiological Activity during Co-Composting of Food and Agricultural Waste for Soil Amendment

Microbiological Activity during Co-Composting of Food and Agricultural Waste for Soil Amendment

Bacterial dynamics during the burial of starch-based bioplastic and oxo-low-density-polyethylene in compost soil

Bacterial Dynamics During the Degradation of Starch-based Bioplastic and Oxo- degradable Plastic in Compost Soil

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