Rhizospheric Flora and the Influence of Agronomic Practices on Them: A Review

Kumar, Dinesh; Shivay, Yashbir Singh; Dhar, Shiva; Kumar, Chitranjan; Prasad, Rajendra

doi:10.1007/s40011-012-0059-4

Cited by 29 publications

(16 citation statements)

References 117 publications

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“…Repeated application of organic fertilizers can increase microbial biomass and improve soil biological functions by a direct supply of exogenous organic C to the soil (Diacono and Montemurro 2010). Furthermore, organic fertilizers can indirectly affect soil microbial community by increasing plant growth and stimulating root exudation (Kumar et al 2013). These findings are confirmed by our observation of a significant increase in SF diversity under both organic and mineral fertilizations (Figure 1) and in SF quantity under organic fertilization (Figure 5b).…”

Section: Statistic Characterization Of Fungal Diversity and Quantity supporting

confidence: 83%

Contrasting effects of long-term fertilization on the community of saprotrophic fungi and arbuscular mycorrhizal fungi in a sandy loam soil

Song

Chen

Xiang

et al. 2015

Plant Soil Environ.

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Section: Statistic Characterization Of Fungal Diversity and Quantity supporting

confidence: 83%

Contrasting effects of long-term fertilization on the community of saprotrophic fungi and arbuscular mycorrhizal fungi in a sandy loam soil

Song

Chen

Xiang

et al. 2015

Plant Soil Environ.

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“…Among soil microorganisms, arbuscular mycorrhizal (AM) fungi provide a direct link between soil and roots and are renowned for their ability to improve plant mineral nutrients, including heavy metals (Kumar et al 2013). There have been some reports that AM fungi can improve plant tolerance or attenuate heavy metal stress or enhance plant growth under metal contaminations (Gaur and Adholeya 2004;Wang et al 2005).…”

Section: Rhizoremediationmentioning

confidence: 99%

“…The root-microbe interaction play major role in the performance of bioaugmentation-assisted phytoextraction applied to metal-contaminated soils as well as detoxification of heavy metals from the contaminated ecosystem (Artursson et al 2006;Kumar and Mani 2012;Kumar et al 2013). …”

Section: Detoxification Of Metals Through Root Exudatesmentioning

confidence: 99%

Biotechnological advances in bioremediation of heavy metals contaminated ecosystems: an overview with special reference to phytoremediation

Mani

Kumar

2013

Int. J. Environ. Sci. Technol.

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500

137

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The ability of heavy metals bioaccumulation to cause toxicity in biological systems-human, animals, microorganisms and plants-is an important issue for environmental health and safety. Recent biotechnological approaches for bioremediation include biomineralization (mineral synthesis by living organisms or biomaterials), biosorption (dead microbial and renewable agricultural biomass), phytostabilization (immobilization in plant roots), hyperaccumulation (exceptional metal concentration in plant shoots), dendroremediation (growing trees in polluted soils), biostimulation (stimulating living microbial population), rhizoremediation (plant and microbe), mycoremediation (stimulating living fungi/mycelial ultrafiltration), cyanoremediation (stimulating algal mass for remediation) and genoremediation (stimulating gene for remediation process). The adequate restoration of the environment requires cooperation, integration and assimilation of such biotechnological advances along with traditional and ethical wisdom to unravel the mystery of nature in the emerging field of bioremediation. This review highlights better understanding of the problems associated with the toxicity of heavy metals to the contaminated ecosystems and their viable, sustainable and eco-friendly bioremediation technologies, especially the mechanisms of phytoremediation of heavy metals along with some case studies in India and abroad. However, the challenges (biosafety assessment and genetic pollution) involved in adopting the new initiatives for cleaning-up the heavy metals-contaminated ecosystems from both ecological and greener point of view must not be ignored.

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“…Zinc deficiency ranks fifth among the most important health risk factors in developing countries and proper Zn management contributes about 18.4 million tonnes of grains (211.6 billion) for major food grain crops . Interactions between the root and the root microbiome influence plant growth as several microorganisms in the rhizosphere share a symbiotic or associative relationship with the plant . The use of microbial inoculation in the nutrient management of rice is known to elicit positive effects on growth, yield, and nutrient uptake.…”

Section: Introductionmentioning

confidence: 99%

Improving Water and Nutrient Use Efficiency in Rice by Changing Crop Establishment Methods, Application of Microbial Inoculations, and Zn Fertilization

et al. 2019

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A field experiment was conducted during the wet seasons of 2013 and 2014 to evaluate the effect of three rice establishment methods: viz. puddled transplanted rice (PTR), system of rice intensification (SRI) and aerobic rice system (ARS), two cyanobacteria based inoculants, viz. Anabaena sp (CR1) + Providencia sp (PR3) consortium and Anabaena–Pseudomonas (An‐Ps) biofilm formulation, and zinc (Zn) fertilization on the rice yield, water productivity, and nutrient use efficiency. The yields of rough, brown and milled rice were highest in SRI, which was on par with PTR and both methods proved significantly superior to ARS in both years. The total water productivity of rough and brown rice in the first year was significantly higher in SRI. The SRI method saved 21.9% and 27.4% irrigation water over PTR, and savings in ARS were 37.4% and 50.8% in first and second year respectively, over PTR. The use of An‐Ps biofilm formulation along with 75% RDN improved the agronomic use efficiency of both nitrogenous and phosphatic fertilizers applied. On the basis of the present study, it can be concluded that SRI improved rice yields and water productivity; while involvement of An‐Ps biofilm formulation can be recommended for improved nutrient use efficiency.

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Rhizospheric Flora and the Influence of Agronomic Practices on Them: A Review

Cited by 29 publications

References 117 publications

Contrasting effects of long-term fertilization on the community of saprotrophic fungi and arbuscular mycorrhizal fungi in a sandy loam soil

Contrasting effects of long-term fertilization on the community of saprotrophic fungi and arbuscular mycorrhizal fungi in a sandy loam soil

Biotechnological advances in bioremediation of heavy metals contaminated ecosystems: an overview with special reference to phytoremediation

Improving Water and Nutrient Use Efficiency in Rice by Changing Crop Establishment Methods, Application of Microbial Inoculations, and Zn Fertilization

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