Actinomycetes in rice straw decomposition

Abdulla, Hesham; El-Shatoury, Sahar A.

doi:10.1016/j.wasman.2006.06.006

Cited by 55 publications

(23 citation statements)

References 8 publications

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“…The formation of halo zone on RSP amended media proved that they can produce hydrolytic and oxidative enzymes to break down the complex substrates RSP. These findings were consistent with the results of McCarthy (1987) and Abdulla and El-Shatoury (2007) who applied actinobacteria on rice straw composting and found their efficiency in rice straw decomposition. The highest treatment concentration (25% RSP media) for this study was quite logical because the majority of actinobacteria isolates (A2, A4 & A24) did not cross 20% level except for the isolate A7 and A9.…”

Section: Resultssupporting

confidence: 92%

Isolation and screening of potential actinobacteria for rapid composting of rice straw

et al. 2010

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Rice straw is produced as a by-product from rice cultivation, which is composed largely of lignocellulosic materials amenable to general biodegradation. Lignocellulolytic actinobacteria can be used as a potential agent for rapid composting of bulky rice straw. Twenty-five actinobacteria isolates were isolated from various in situ and in vitro rice straw compost sources. Isolates A2, A4, A7, A9 and A24 were selected through enzymatic degradation of starch, cellulose and lignin followed by the screening for their adaptability on rice straw powder amended media. The best adapted isolate (A7) was identified as Micromonospora carbonacea. It was able to degrade cellulose, hemicelluloses and carbon significantly (P ≤ 0.05) over the control. C/N ratio was reduced to 18.1 from an initial value of 29.3 in 6 weeks of composting thus having the potential to be used in large scale composting of rice straw.

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Section: Resultssupporting

confidence: 92%

Isolation and screening of potential actinobacteria for rapid composting of rice straw

et al. 2010

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“…Differences between the two horizons also included contents in clay and silt. This may be ecologically significant, as distinct actinobacterial taxa may inhabit soil microsites created by different particle sizes (Sessitsch et al, 2001;Abdulla & El-Shatoury, 2007).…”

Section: Discussionmentioning

confidence: 99%

Actinobacterial community dominated by a distinct clade in acidic soil of a waterlogged deciduous forest

Kopecký

Kyselková

Omelka

et al. 2011

FEMS Microbiology Ecology

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Members of the Actinobacteria are among the most important litter decomposers in soil. The site of a waterlogged deciduous forest with acidic soil was explored for actinobacteria because seasonality of litter inputs, temperature, and precipitation provided contrasting environmental conditions, particularly variation of organic matter quantity and quality. We hypothesized that these factors, which are known to influence decomposition, were also likely to affect actinobacterial community composition. The relationship between the actinobacterial community, soil moisture and organic matter content was assessed in two soil horizons in the summer and winter seasons using a 16S rRNA taxonomic microarray and cloning-sequencing of 16S rRNA genes. Both approaches showed that the community differed significantly between horizons and seasons, paralleling the changes in soil moisture and organic matter content. The microarray analysis further indicated that the actinobacterial community of the upper horizon was characterized by high incidence of the genus Mycobacterium. In both horizons and seasons, the actinobacterial clone libraries were dominated (by 80%) by sequences of a separate clade sharing an ancestral node with Streptosporangineae. This relatedness is supported also by some common adaptations, for example, to soil acidity and periodic oxygen deprivation or dryness.

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“…Many studies have attempted to hasten straw decomposition via microbial routes. Cellulolytic fungi applications such as Aspergillus, Chaetomium , and Trichoderma , [95, 96], and actinomycetes [97] have shown promising results. Fontaine et al [98] showed that exogenous cellulase supplementation accelerated decomposition of cellulose in soil.…”

Section: Application Of Cellulases In Various Industriesmentioning

confidence: 99%

Microbial Cellulases and Their Industrial Applications

Kuhad

Gupta

Singh³

2011

Enzyme Research

758

383

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Microbial cellulases have shown their potential application in various industries including pulp and paper, textile, laundry, biofuel production, food and feed industry, brewing, and agriculture. Due to the complexity of enzyme system and immense industrial potential, cellulases have been a potential candidate for research by both the academic and industrial research groups. Nowadays, significant attentions have been devoted to the current knowledge of cellulase production and the challenges in cellulase research especially in the direction of improving the process economics of various industries. Scientific and technological developments and the future prospects for application of cellulases in different industries are discussed in this paper.

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Actinomycetes in rice straw decomposition

Cited by 55 publications

References 8 publications

Isolation and screening of potential actinobacteria for rapid composting of rice straw

Isolation and screening of potential actinobacteria for rapid composting of rice straw

Actinobacterial community dominated by a distinct clade in acidic soil of a waterlogged deciduous forest

Microbial Cellulases and Their Industrial Applications

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