Fire in pine grown regions of Himalayas depletes cultivable plant growth promoting beneficial microbes in the soil

Mittal, Divya; Shukla, Rakesh; Verma, Sudhir; Sagar, Anand; Verma, K. S.; Pandey, Anita; Negi, Yashwant Singh; Saini, Reena V.

doi:10.1016/j.apsoil.2019.03.020

Cited by 19 publications

(12 citation statements)

References 29 publications

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“…Similar results were reported by Mittal et al. (2019), who observed more than five times higher ( p < .001) culturable bacterial populations in soils collected from burnt forest compared with unburnt forest. The elevated bacterial population immediately after burn could have possibly resulted from increased nutrient (specifically, N, P, and some micronutrients) concentrations (Yeager, Northup, Grow, Barns, & Kuske, 2005) and increased pH of the soil (Jaatinen, Knief, Dunfield, Yrjålå, & Fritze, 2004; Mataix‐Solera et al., 2009).…”

Section: Resultssupporting

confidence: 90%

Effects of prescribed fire on soil properties in a pine rockland ecosystem

Freidenreich

Harris

Dattamudi

et al. 2020

Agricultural & Env Letters

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We investigated the impact of a single prescribed fire on soil properties of a pine rockland (PR) ecosystem (South Florida, USA) that had never been burned since establishment in 1978. Soil samples were collected before the prescribed fire (T0) and 1 wk (T1), 4 wk (T4), and 10 wk (T10) postburn and analyzed for chemical characteristics (pH, C, N, P, organic matter) and culturable bacterial and fungal cells. Soil organic matter showed a significant decrease after the burn as a result of fuel combustion. However, a significant increase in soil fungal and bacterial communities in postburn samples was observed, possibly resulting from higher P, N, and micronutrient availability in the soil after burning. Our study indicates that culturable soil microbes can respond to even small and undetectable soil chemical changes. This case study suggests that fast‐growing soil microbes respond more rapidly than chemical properties to a prescribed burn and may have an impact on recovering of native vegetation communities.

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Section: Resultssupporting

confidence: 90%

Effects of prescribed fire on soil properties in a pine rockland ecosystem

Freidenreich

Harris

Dattamudi

et al. 2020

Agricultural & Env Letters

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“…Desta forma embora a queima prescrita tenha se tornado uma ferramenta de manejo florestal cada vez mais utilizada em diversos ecossistemas no mundo, o que se tem conhecimento é que a queima prescrita consiste na utilização do fogo em condições controladas, sendo prevista em lei e utilizada na redução de material combustível com intuito de minimizar a extensão e a gravidade dos incêndios florestais , em contraste nos incêndios florestais que o fogo é sem controle e provocado pelas ações antrópicas ou naturais, onde se tem uma carga abundante de material combustível (Mittal et al, 2019).…”

Section: Discussionunclassified

Meta-análise de estudos sobre o efeito do fogo nos biomas florestais em relação aos microrganismos fúngicos

2020

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RESUMO: O fogo é um elemento da mudança global que pode influenciar as comunidades fúngicas, com intuito de compreender como o fogo influência essas comunidades, foi realizado uma revisão sistemática com meta-análise de 30 estudos que abordassem o tema respostas fúngicas ao fogo. Dos estudos avaliados 56,67% obtiveram resultados positivos para o uso do fogo em função da comunidade fúngica e 43,33% apresentaram efeitos negativos, 56,66% das análises dos microrganismos fúngicos foram realizadas através da coleta do solo. As respostas dos microrganismos fúngicos ao fogo diferiram significativamente entre os tipos de vegetação, a biomassa fúngica aumentou após incêndios em Florestas boreais, mas não após incêndios em Florestas temperadas e tropicais, a Floresta tropical não apresentou diferenças entre os incêndios florestais e queima prescrita. Foi verificado nesta meta-análise que os incêndios florestais levam a uma maior redução da comunidade fúngica do que as queimadas prescritas. Os mecanismos ou processos responsáveis pela diversidade de espécies de fungos após o uso do fogo tanto para incêndios como queima prescrita permanecem desconhecidos. Desta forma a padronização das metodologias é necessária para que se possa realizar comparações entre os estudos da mesma tipologia de vegetação. Meta-analysis of studies on the effect of fire on forest biomes in relation to fungal microorganisms ABSTRACT: Fire is an element of global change that can influence fungal communities, thus participating in the dynamics of ecosystems. In order to understand how fire influences these communities, a meta-analysis of 30 fungal responses published to fire was carried out. From the studied studies 56,67% obtained positive results for the use of fire as a function of the fungal community and 43,33% presented negative effects, 56,66% of the analysis of the fungal microorganisms was done through the collection of the soil. The responses of fungal microorganisms to fire differed significantly between vegetation types and fungal biomass increased after fires in boreal forests, but not after fires in temperate and tropical forests, the tropical forest did not present differences between forest fires and prescribed burning. It was verified in this meta-analysis that the forest fires lead to a greater reduction of the fungal community than the prescribed fires. The mechanisms or processes responsible for the diversity of fungal species after the use of fire for both fire and prescribed burning remain unknown. In this way the standardization of methodologies is necessary so that comparisons can be made between the studies of the same typology of vegetation.

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“…The bacterial strains Serratia marcescens and Burkholderia cepacia were isolated earlier by our lab (Mittal et al, 2019). As described earlier, the pure cultures were maintained in nutrient broth and on agar medium (HiMedia, Mumbai, India) (Mittal et al, 2019). A total of five fungal pathogens were taken for the study i.e.…”

Section: Microbes Used In the Studymentioning

confidence: 99%

“…and Rosellinia sp. at 28 °C for 7 days as described earlier (Mittal et al, 2019). For analysing the impact of NPs in controlling the adverse effects of phytopathogenic fungi, the surface-sterilized gram (chick pea) seedlings were grown in dark at 25 °C under moist conditions (Gupta et al, 2016).…”

Section: Biocontrol Activity Of Npsmentioning

confidence: 99%

Synthesis of Biogenic silver nanoparticles using plant growth-promoting bacteria: Potential use as biocontrol agent against phytopathogens

Mittal

Kumar

Balasubramaniam

et al. 2021

Biomat Polymers Horizon

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Biogenic nanoparticles (NPs) derived from microbes present an excellent opportunity to deal with various challenges in medicine, diagnosis, environment and agriculture. In the area of agriculture sciences, researchers are facing challenges related to excessive utilization of pesticides which can be answered by utilizing plant growth-promoting (PGP) microbes. Herein, we have employed the culture filtrate of two PBP bacteria strains, Serratia marcescens and Burkholderia cepacia to prepare biogenic silver NPs. The biogenic silver NPs were characterized by various techniques viz. UV-VIS spectroscopy, SEM, XRD and FTIR. The biogenic AgNPs were able to control the growth of phytopathogenic fungi Aspergillus niger, A. fumigatus, Fusarium oxysporum, Pythium sp., and Rosellinia sp. by more than 80% as examined by in vitro growth reduction on agar medium. Very significantly, the growth inhibition of seedlings by phytopathogenic fungi was efficiently rescued using biogenic AgNPs derived from PGP bacteria. These results indicate the potential use of biogenic NPs to reduce the burden of chemical-based pesticides.

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Fire in pine grown regions of Himalayas depletes cultivable plant growth promoting beneficial microbes in the soil

Cited by 19 publications

References 29 publications

Effects of prescribed fire on soil properties in a pine rockland ecosystem

Effects of prescribed fire on soil properties in a pine rockland ecosystem

Meta-análise de estudos sobre o efeito do fogo nos biomas florestais em relação aos microrganismos fúngicos

Synthesis of Biogenic silver nanoparticles using plant growth-promoting bacteria: Potential use as biocontrol agent against phytopathogens

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