Cyanobacterial inoculation in rice grown under flooded and SRI modes of cultivation elicits differential effects on plant growth and nutrient dynamics

Prasanna, Radha; Adak, Anurup; Verma, Shikha; Bidyarani, Ngangom; Babu, Santosh; Pal, Madan; Shivay, Yashbir Singh; Nain, Lata

doi:10.1016/j.ecoleng.2015.09.033

Cited by 62 publications

(45 citation statements)

References 56 publications

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“…Interestingly, the application of fertilizers (NPK) led to an increase in their number, relative to the absolute control (without RDF) treatments. This is supported by the observations of Zhao et al and Prasanna et al who documented increased population densities of nitrogen fixers in the case of soil samples from the SRI method. The SRI method without fertilizers did not support any of the microbial groups but both the SRI and DSR methods of cultivation with the RDF showed higher ARA.…”

Section: Discussionsupporting

confidence: 81%

“…The phyllosphere of rice is an important habitat for diverse organisms including bacteria, archaea, and fungi exhibiting pathogenic or symbiotic interactions . Rice plants grown under different methods of cultivation (such as conventional, SRI, and DSR) with/without fertilization, exhibited differences in their physiological activities and microbial populations, as a result of the aerobic/anaerobic ecological milieu in soil bringing about changes in the quantity and forms of nutrients . Gopalakrishnan et al also observed an increase in the soil microbiological activity, in terms of various enzymes related to nutrient mobilization in the samples from SRI treatment, over those from the conventional method of cultivation.…”

Section: Discussionmentioning

confidence: 99%

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Influence of fertilizers and rice cultivation methods on the abundance and diversity of phyllosphere microbiome

et al. 2017

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Rice paddies are man-made, cross-over ecologies of aquatic and terrestrial systems, which favor the proliferation of characteristic microbial communities. Moisture regimes under flooded and different levels of irrigation such as in direct seeded rice (DSR) and system of rice intensification (SRI) lead to modulation in crop physiology, soil nutrient availability, and the soil microbiome. However, the diversity of the rice phyllosphere microbiome is less investigated in terms of the influence of fertilizer application and the method of rice cultivation (conventional-flooded, DSR and SRI). Scanning electron micrographs revealed the presence of bacteria as aggregates at microsites of the leaves. Phylogenetic analysis of the dominant culturable bacterial isolates using 16S rDNA sequences revealed that they belonged to the genera - Bacillus, Brevibacillus, Pantoea, Enterobacter, Pseudomonas, Erwinia, and Streptomyces. Fertilizer application brought about a distinct modulation in the communities belonging to phyla such as Bacteriodetes, Firmicutes, and Planctomyces, besides Proteobacteria. The cyanobacterial population was much influenced by the cultivation methods, particularly the SRI. Principal component analysis (PCA), involving the culturable phyllospheric microbial groups and leaf attributes (nutrients and pigments), illustrated the importance of leaf nitrogen and zinc. Also, the communities of the phylum Firmicutes exhibited marked changes in terms of the diversity, not only due to the cultivation method, but also the application of fertilizers. Thus, the cultivation methods and fertilizer application played important roles in modulating both the structural (taxonomical) and functional attributes of the phyllosphere microbiome.

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Section: Discussionsupporting

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Influence of fertilizers and rice cultivation methods on the abundance and diversity of phyllosphere microbiome

et al. 2017

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“…Similar type of enhanced seed germination percentage was observed by Qurashi and Sabri [47] in chick pea and Buddhika et al [48] in maize. Biofilmed biofertilizers have already shown its potential in several crops like rice, cotton, wheat, tea, soybean and mung bean [5,6,8,49].…”

Section: Discussionmentioning

confidence: 99%

“…In the last few years the focus has shifted from single inoculation to coinoculation to use of consortium of microorganisms to obtain maximum benefits. Another strategy developed is the biofilmed biofertilizers wherein fungi, cyanobacteria or bacteria are used as matrix and agriculturally important bacteria like Azotobacter, Rhizobium, Bacillus and Pseudomonas are used as associate partners [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Development of Mesorhizobium ciceri-Based Biofilms and Analyses of Their Antifungal and Plant Growth Promoting Activity in Chickpea Challenged by Fusarium Wilt

et al. 2016

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Biofilmed biofertilizers have emerged as a new improved inoculant technology to provide efficient nutrient and pest management and sustain soil fertility. In this investigation, development of a Trichoderma viride-Mesorhizobium ciceri biofilmed inoculant was undertaken, which we hypothesized, would possess more effective biological nitrogen fixing ability and plant growth promoting properties. As a novel attempt, we selected Mesorhizobium ciceri spp. with good antifungal attributes with the assumption that such inoculants could also serve as biocontrol agents. These biofilms exhibited significant enhancement in several plant growth promoting attributes, including 13-21 % increase in seed germination, production of ammonia, IAA and more than onefold to twofold enhancement in phosphate solubilisation, when compared to their individual partners. Enhancement of 10-11 % in antifungal activity against Fusarium oxysporum f. sp. ciceri was also recorded, over the respective M. ciceri counterparts. The effect of biofilms and the M. ciceri cultures individual on growth parameters of chickpea under pathogen challenged soil illustrated that the biofilms performed at par with the M. ciceri strains for most plant biometrical and disease related attributes. Elicitation of defense related enzymes like L-phenylalanine ammonia lyase, peroxidase and polyphenol oxidase was higher in M. ciceri/biofilm treated plants as compared to uninoculated plants under pathogen challenged soil. Further work on the signalling mechanisms among the partners and their tripartite interactions with host plant is envisaged in future studies.

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“…Soil microorganisms such as AM fungi symbiotically associated with plant roots and interacting with specific microbial communities are able to develop a range of activities to increase plant growth and crop productivity under stressed conditions (Barea et al, 2005;Azcón and Barea, 2010). Beneficial effect of microbial inoculants has been demonstrated in terms of greater biomass production, better nutrient uptake in plants and increase in grain N and P in rice grown under SRI practices (Prasanna et al, 2015) and increased micronutrient uptake (Adak et al, 2016).…”

Section: Issn: 2319-7706 Volume 7 Number 04 (2018)mentioning

confidence: 99%

Effect of Arbuscular mycorrhizal Fungal Colonization on Nutrient Uptake in Rice Aerobic Conditions

Narwal¹,

Annapurna²,

Choudhary³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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Cyanobacterial inoculation in rice grown under flooded and SRI modes of cultivation elicits differential effects on plant growth and nutrient dynamics

Cited by 62 publications

References 56 publications

Influence of fertilizers and rice cultivation methods on the abundance and diversity of phyllosphere microbiome

Influence of fertilizers and rice cultivation methods on the abundance and diversity of phyllosphere microbiome

Development of Mesorhizobium ciceri-Based Biofilms and Analyses of Their Antifungal and Plant Growth Promoting Activity in Chickpea Challenged by Fusarium Wilt

Effect of Arbuscular mycorrhizal Fungal Colonization on Nutrient Uptake in Rice Aerobic Conditions

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