How methane feedback response influence redox processes in a tropical vertisol

Mohanty, Santosh Ranjan; Tiwari, Sneh; Dubey, Garima; Ahirwar, Usha; Kollah, Bharati

doi:10.1007/s00374-016-1090-z

Cited by 8 publications

(6 citation statements)

References 36 publications

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“…In simulated experiments an increase in methane concentration in atmosphere resulted in a doubling of apparent CH 4 consumption rate (Mohanty et al, 2016). Methanotrophs and heterotrophs increased and there was increase in potential denitrification rate, potential iron and sulfate reduction rate.…”

Section: Microbiology Of Climate Changementioning

confidence: 95%

“…Inoculation with high temperature and drought tolerant isolates significantly improved the yields of cluster bean, mungbean and pigeonpea under rain-fed conditions. Several Rhizobium isolates of pigeon pea, chickpea and soybean in acid soils analyzed by proteomic tools, which showed unique protein differences amongst acid-soil tolerant isolates (Dubey et al, 2016 ). Garg et al (2016) found seven biotypes of `berseem' rhizobia in Haryana soils of which two types were common in three districts showing some degree of endemism even in the high temperature arid soils.…”

Section: Rhizobial Diversitymentioning

confidence: 99%

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Agricultural Microbiology Research Progress in India in the New Millennium

Rao¹,

Adhya²,

Saxena³

2019

PINSA

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The research efforts in microbiology over last two decades have focussed on assessing the microbial diversity in various soil types and cropping systems in all agro-eco-regions, including extreme environments resulting in creation of a vast repository of microorganisms, free living and endophytes. A marked departure from the past is their identification by both conventional and molecular methods, resulting in discovery of many novel species. The effects of various soil and agronomic management practices were assessed on soil microbial diversity and soil health by both classical and metagenomic approach. The beneficial effects of organic and integrated farming, and adverse effects of chemical intensification have been assessed, leading to the identification of actinobacteria as important players in maintaining soil health. A major impact has been the firm attention received from policy makers on the urgent need to conserve soil biodiversity and improve soil health. Identification of rapid methods of soil biological health assessment, improved rhizobial inoculants, microbial technology for rapid in situ and ex situ residue and waste breakdown, and mitigating climate change effects are the current priorities. Future priorities include assessment of the structure and function of the vast reservoir of unculturable microbes; deleterious microorganisms, assessment of soil-plant-microbe continuum and plant immunity modulation by microbes; rhizosphere engineering, role of archaea in maintaining soil health, microbial methods to improve soil organic matter formation; assessment and quantification of ecosystem services rendered by agriculturally important microorganisms; and improved microbial technology for biofertilizers and delivery systems. The tremendous advances in agricultural microbiology in last two decades in India are a cause for optimism that solutions will be forged for the above challenges using both classical and modern approaches, thereby ushering in the process more sustainable agricultural systems.

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Section: Microbiology Of Climate Changementioning

confidence: 95%

Section: Rhizobial Diversitymentioning

confidence: 99%

Agricultural Microbiology Research Progress in India in the New Millennium

Rao¹,

Adhya²,

Saxena³

2019

PINSA

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“…For methanotrophs, the FM and FMR treatments resulted in higher abundances of pmoA genes than the other treatments (Figure 2a). Mohanty, Tiwari, Dubey, Ahirwar, and Kollah (2016) showed that methanotrophs are generally activated at high CH 4 concentrations. This was evidenced by the significantly positive relationship between the pmoA gene copy number and CH 4 emissions (Table S3 in Appendix S1).…”

Section: Effects Of Plant Residue Application On Methanogenic and Mmentioning

confidence: 99%

Co‐incorporation of Chinese milk vetch (Astragalus sinicus L.) and rice (Oryza sativa L.) straw minimizes CH₄ emissions by changing the methanogenic and methanotrophic communities in a paddy soil

Zhou

Gao

et al. 2020

European J Soil Science

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The practice of co‐incorporating rice straw and leguminous green manure (such as Chinese milk vetch) into paddy soils has become increasingly popular in the last 10 years, although its effect on soil CH4 emissions and microbial community structure is poorly understood. In this study, data from a 2‐year pot experiment were used to reveal the effects of the co‐incorporation of rice straw and Chinese milk vetch on CH4 emissions and methanogenic and methanotrophic communities in paddy soil. Five treatments were chosen: CK (unamended control), CF (inorganic fertilizer), FM (inorganic fertilizer and Chinese milk vetch, 20 g 10 kg−1 dry soil, 4.5 t ha−1), FR (inorganic fertilizer and rice straw, 20 g 10 kg−1 dry soil, 4.5 t ha−1) and FMR (inorganic fertilizer and Chinese milk vetch and rice straw mixture, 5 + 15 g 10 kg−1 dry soil, 1.125 + 2.375 t ha−1). Overall, the soil CH4 emissions in the 2 years under all residue treatments (104.4–122.8 and 83.3–133.3 g CH4 m−2) were higher than those in CK (57.0 and 20.7 g CH4 m−2) and CF (71.8 and 21.9 g CH4 m−2) treatments. The FMR treatment decreased CH4 emissions when compared with FM and FR, especially in the second year. A higher abundance of methanogens (mcrA gene copies) was found under the plant residue‐treated soils (4.35 × 108 g−1 dry soil on average) and FM increased the abundance of methanotrophs (pmoA gene copies, 2.68 × 106 g−1 dry soil). Application of plant residues changed the methanogenic and methanotrophic community structures in comparison with CF (e.g., markedly increased the populations of Methanobacteriales and Methylomonas and suppressed Methanomicrobiales and Methylobacter populations). Methane emissions were significantly and positively related to the mcrA and pmoA gene copy numbers, as well as the mcrA/pmoA ratio. The partial least squares path model (PLS‐PM) indicated that the rice plant biomass (path coefficient = 0.64), the abundance of methanogens (path coefficient = 0.57) and the community structure of methanotrophs (path coefficient = −0.59) were determinants of CH4 emissions. Among the three residue‐treated soils, FMR showed the lowest CH4 emissions and was associated with a slight decrease in the mcrA/pmoA ratio and a significant increase in the Type I/Type II methanotrophs ratio. Thus, we recommend the co‐incorporation of Chinese milk vetch and rice straw as a sustainable fertilization pattern to improve the growth of rice and minimize CH4 emissions. Highlights Residue application improves rice productivity (except for FR), soil fertility and CH4 emissions. Co‐incorporation of MV and RS reduces CH4 emissions in comparison with pure MV or RS addition. Residue application changes the community structure of methanogens and methanotrophs. The methanogenic abundance and the methanotrophic community structure determine the CH4 emissions.

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“…Based on the CH 4 changes (C-the final, and C 0 -the initial CH 4 concentration) during time (t), the average rates of CH 4 oxidation were calculated for all incubation periods using the following equation: CH 4 oxidation rate = (C-C 0 ) / t (Wnuk et al 2017). The equation C = C 0 e −kt , where k is the first-order kinetic constant (Mohanty et al 2016), was used for calculating the half-life value (t 1/2 ) expressed as days.…”

Section: Calculations and Statisticsmentioning

confidence: 99%

“…Arable soils are generally well aerated (Oenema 2001); therefore, they can be biological sinks for CH 4 . However, the methanotrophic activity of soils is controlled by a wide range of factors: CH 4 and O 2 as substrates (Bussmann et al 2006;Henckel et al 2000;Hernandez et al 2015;Li et al 2015;Mohanty et al 2016), soil properties and conditions such as organic C content and N availability and moisture, pH and temperature (Einola et al 2007;Huang et al 2016;Jäckel et al 2001;Kravchenko et al 2005), and human activities, such as grazing, deforestation, and fertilization (Bodelier 2011;Castillo et al 2017;Chen-rui et al 2003;Ho et al 2015;Köster et al 2017;Trimpler et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Methanotrophs are favored under hypoxia in ammonium-fertilized soils

2018

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Methanotrophy of arable soils is affected by N fertilization, but the knowledge about the effect of oxygen level is poorly understood; soil aeration can fluctuate and zones of low oxygen are widespread in soil. We monitored CH 4 oxidation in three mineral soils (Eutric Cambisol, Haplic Podzol, Mollic Gleysol) under laboratory conditions by varying the O 2 level (from 20 to 2% O 2), with or without NH 4 + (100 mg N kg −1). In controls (without NH 4 +), CH 4 was oxidized completely in the O 2 range from oxia (20% O 2) to high hypoxia (5% O 2), while the process was inhibited under microoxia (2% O 2). Ammonium application decreased CH 4 consumption in all soils. This negative effect was stronger at 20% and 2% O 2 than under hypoxia. The highest CH 4 oxidation rates and the shortest initial (lag) phases in both control and NH 4 +-amended soils were observed under high (5% O 2) and low (10% O 2) hypoxia.

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How methane feedback response influence redox processes in a tropical vertisol

Cited by 8 publications

References 36 publications

Agricultural Microbiology Research Progress in India in the New Millennium

Agricultural Microbiology Research Progress in India in the New Millennium

Co‐incorporation of Chinese milk vetch (Astragalus sinicus L.) and rice (Oryza sativa L.) straw minimizes CH₄ emissions by changing the methanogenic and methanotrophic communities in a paddy soil

Methanotrophs are favored under hypoxia in ammonium-fertilized soils

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How methane feedback response influence redox processes in a tropical vertisol

Cited by 8 publications

References 36 publications

Agricultural Microbiology Research Progress in India in the New Millennium

Agricultural Microbiology Research Progress in India in the New Millennium

Co‐incorporation of Chinese milk vetch (Astragalus sinicus L.) and rice (Oryza sativa L.) straw minimizes CH4 emissions by changing the methanogenic and methanotrophic communities in a paddy soil

Methanotrophs are favored under hypoxia in ammonium-fertilized soils

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Co‐incorporation of Chinese milk vetch (Astragalus sinicus L.) and rice (Oryza sativa L.) straw minimizes CH₄ emissions by changing the methanogenic and methanotrophic communities in a paddy soil