Efficacy of AMF and PGPR Inoculants on Maize (Zea mays L.) Plant Growth and Their Rhizosphere Soil Properties

Sangeetha, Jeyabalan; Solomon, E. King; Natarajan, K.A.; Rajeshkannan, V.

doi:10.1007/978-81-322-1087-0_11

Cited by 3 publications

(2 citation statements)

References 40 publications

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“…To meet the growing demand for this cereal and to satisfy the need for a more sustainable agriculture with lower agrochemical inputs, AM fungi and PGPR stand as promising tools (Malusá et al 2016). Recent studies demonstrated the efficiency of these beneficial microbes in promoting maize growth and yield in field experiments (Adesemoye et al 2008;Jarak et al 2012;Krey et al 2013;Sangeetha et al 2013;Berta et al 2014) and in greenhouse trials (Wu et al 2005;Couillerot et al 2013). Despite these promising results, the application of both AM fungi and PGPR by broadcasting inocula in open agricultural fields is not economically feasible, since non targeted spreading of inoculum over large areas results in high cost per plant (Vosátka et al 2012;Oliveira et al 2016b).…”

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confidence: 99%

Seed coating with inocula of arbuscular mycorrhizal fungi and plant growth promoting rhizobacteria for nutritional enhancement of maize under different fertilisation regimes

Rocha

Carvalho

et al. 2018

Archives of Agronomy and Soil Science

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Arbuscular mycorrhizal (AM) fungi and plant growth-promoting rhizobacteria, responsible for enhancing plant nutrition, vigour and growth, may be used to reduce dosages of chemical fertilisers. Technologies that allow an economically viable and efficient application of these beneficial microbes in large scale agriculture must be studied. Seed coating is a potential delivery system for efficiently introducing minor amounts of bioinoculants. Despite the dramatic reduction on inoculum dose per plant, inoculation of AM fungi via seed coating was as effective as conventional soil inoculation. Fertilisation and inoculation had a significant impact on maize shoots nutrient concentrations. Different fertilisation regimes did not influence mycorrhizal colonisation. Plants without fertilisation and singly inoculated with R. irregularis showed shoot nutrient concentration increments of 110, 93, 88 and 175% for nitrogen, phosphorus, potassium and zinc, respectively, comparing with non-inoculated controls. Plants singly inoculated with P. fluorescens via seed coating under full fertilisation, presented enhancements of 100, 75 and 141% for magnesium, zinc and manganese, respectively, comparing with non-inoculated controls. Seed coating is a promising tool for delivering microbial inoculants into the soil, while promoting sustainable production of maize. This technology is particularly pertinent in low input agriculture, with potential environmental profits and food quality improvements.

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confidence: 99%

Seed coating with inocula of arbuscular mycorrhizal fungi and plant growth promoting rhizobacteria for nutritional enhancement of maize under different fertilisation regimes

Rocha

Carvalho

et al. 2018

Archives of Agronomy and Soil Science

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“…Dehariya et al (2004) also reported that when AMF and Trichoderma sp were given in combination against Fusarium udum in pigeon pea, both AMF colonization in plant roots and Trichoderma population in soil were triggered. Sangeetha et al (2013) reported high population of P. fluorescens in soil even after 75 days, if applied along with AMF compared to its sole application. All these research findings strongly support the results of the present study.…”

Section: Resultsmentioning

confidence: 92%

Interactive effect of biocontrol agents in the management of Fusarium rot in cardamom and its impact on plant defense mechanism

Krishna

Dhanya²,

Joy

et al. 2021

J Spices Arom Crops

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Cardamom plantations are subjected to constant threat due to the Fusarium rot disease caused by Fusarium oxysporum Schlecht which is pronounced during summer months. The current study deals with the identification of an effective and ecofriendly management practice for the disease through the use of biocontrol agents. Survey conducted between February and May 2019 revealed maximum disease severity and incidence in Pampadumpara panchayat of Nedumkandam block (84.40% and 100%) and minimum in Erattaar panchayat of Kattappanablock (50.40% and 60.00%). A pot culture experiment was conducted to study the effect of three bioagents (Glomus fasciculatum, Trichoderma asperellum and Pseudomonas fluorescens) individually as well as in combinations. Root inoculation of G. fasciculatum with basal application and spray with P. fluorescens as well as root inoculation of G. fasciculatum along with basal application of T. asperellum and P. fluorescens spray were identifiedto be effective against the disease. Disease suppression by the above bioagents was facilitated by reduced pathogen antagonist ratio in the soil, high level of mycorrhizal colonization in the roots and enhanced biochemical activity of defense enzymes like peroxidase, poly phenol oxidase and phenylalanine ammonia lyase in the plants.

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Cooperation between arbuscular mycorrhizal fungi and plant growth-promoting bacteria and their effects on plant growth and soil quality

Zhang

et al. 2022

PeerJ

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The roles of arbuscular mycorrhizal fungi (AMF) and plant growth-promoting rhizobacteria (PGPR) in improving nutrition uptake and soil quality have been well documented. However, few studies have explored their effects on root morphology and soil properties. In this study, we inoculated Elymus nutans Griseb with AMF and/or PGPR in order to explore their effects on plant growth, soil physicochemical properties, and soil enzyme activities. The results showed that AMF and/or PGPR inoculation significantly enhanced aboveground and belowground vegetation biomass. Both single and dual inoculations were beneficial for plant root length, surface area, root branches, stem diameter, height, and the ratio of shoot to root, but decreased root volume and root average diameter. Soil total nitrogen, alkaline phosphatase, and urease activities showed significant growth, and soil electrical conductivity and pH significantly declined under the inoculation treatments. Specific root length showed a negative correlation with belowground biomass, but a positive correlation with root length and root branches. These results indicated that AMF and PGPR had synergetic effects on root morphology, soil nutrient availability, and plant growth.

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Efficacy of AMF and PGPR Inoculants on Maize (Zea mays L.) Plant Growth and Their Rhizosphere Soil Properties

Cited by 3 publications

References 40 publications

Seed coating with inocula of arbuscular mycorrhizal fungi and plant growth promoting rhizobacteria for nutritional enhancement of maize under different fertilisation regimes

Seed coating with inocula of arbuscular mycorrhizal fungi and plant growth promoting rhizobacteria for nutritional enhancement of maize under different fertilisation regimes

Interactive effect of biocontrol agents in the management of Fusarium rot in cardamom and its impact on plant defense mechanism

Cooperation between arbuscular mycorrhizal fungi and plant growth-promoting bacteria and their effects on plant growth and soil quality

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