In vitro screening of zinc solubilizing rhizospheric isolates for agrochemicals compatibility

Nagaraju, Yalavarthi; Triveni, S.; Gopal, A. Vijaya; Thirumal, G.; Bhavya, K.; Kumar, Bhavesh

doi:10.15740/has/au/12.techsear(6)2017/1500-1505

Cited by 2 publications

(2 citation statements)

References 11 publications

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“…Similarly, a Bacillus subtilis BC8 strain isolated from the cabbage rhizosphere soil showed a different growth pattern under different concentrations of pesticides and fungicides ranging from 0 to 3,200 μg ml –1 ( Shahid et al, 2019 ). The results of the current study are also in accordance with the observation of Nagaraju et al (2017) , who reported the lethal effect of fungicides, herbicides, and zinc solubilizing bacteria.…”

Section: Resultssupporting

confidence: 92%

Impact of carbendazim on cellular growth, defence system and plant growth promoting traits of Priestia megaterium ANCB-12 isolated from sugarcane rhizosphere

et al. 2022

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Agrochemicals are consistently used in agricultural practices to protect plants from pathogens and ensure high crop production. However, their overconsumption and irregular use cause adverse impacts on soil flora and non-target beneficial microorganisms, ultimately causing a hazard to the ecosystem. Taking this into account, the present study was conducted to determine the high dosage of fungicide (carbendazim: CBZM) effects on the rhizobacteria survival, plant growth promoting trait and reactive oxygen species (ROS) scavenging antioxidant enzyme system. Thus, a multifarious plant growth promoting rhizobacteria (PGPR) isolate, ANCB-12, was obtained from the sugarcane rhizosphere through an enrichment technique. The taxonomic position of the isolated rhizobacteria was confirmed through 16S rRNA gene sequencing analysis as Priestia megaterium ANCB-12 (accession no. ON878101). Results showed that increasing concentrations of fungicide showed adverse effects on rhizobacterial cell growth and survival. In addition, cell visualization under a confocal laser scanning microscope (CLSM) revealed more oxidative stress damage in the form of ROS generation and cell membrane permeability. Furthermore, the increasing dose of CBZM gradually decreased the plant growth promoting activities of the rhizobacteria ANCB-12. For example, CBZM at a maximum 3,000 μg/ml concentration decreases the indole acetic acid (IAA) production by 91.6%, ACC deaminase by 92.3%, and siderophore production by 94.1%, respectively. Similarly, higher dose of fungicide enhanced the ROS toxicity by significantly (p < 0.05) modulating the stress-related antioxidant enzymatic biomarkers in P. megaterium ANCB-12. At a maximum 3,000 μg/ml CBZM concentration, the activity of superoxide dismutase (SOD) declined by 82.3%, catalase (CAT) by 61.4%, glutathione peroxidase (GPX) by 76.1%, and glutathione reductase (GR) by 84.8%, respectively. The results of this study showed that higher doses of the fungicide carbendazim are toxic to the cells of plant-beneficial rhizobacteria. This suggests that a recommended dose of fungicide should be made to lessen its harmful effects.

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Section: Resultssupporting

confidence: 92%

Impact of carbendazim on cellular growth, defence system and plant growth promoting traits of Priestia megaterium ANCB-12 isolated from sugarcane rhizosphere

et al. 2022

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“…It is still unknown exactly how PGPR stimulates plant growth. It is assumed that several mechanisms are involved in this, including the solubilization of phosphorus, potassium and zinc [46,[50][51][52][53][54][55]. Increased tolerance of wheat plants to drought stress [56][57][58], biotic stress [59,60] and salt stress [58,61] is also important.…”

Section: Discussionmentioning

confidence: 99%

Is It Possible to Maintain the Quantity and Quality of Winter Wheat Grain by Replacing Part of the Mineral Nitrogen Dose by Growth Activators and Plant Growth-Promoting Rhizobacteria (PGPR)?

Artyszak

Gozdowski

2021

Sustainability

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The introduction of the “Farm to Fork” strategy in the EU will require a significant reduction in mineral nitrogen fertilization, and therefore the introduction of innovative production technologies to prevent a decline in agricultural production. Studies carried out in several locations in Poland in 2016/17–2018/2019 tested the possibility of replacing 30% of the dose of mineral nitrogen with growth activators alone, in combination with plant growth promoting rhizobacteria in the cultivation of winter wheat. It was confirmed that these two combinations allowed the obtention of a higher yield of grain by 13%, compared to the full nitrogen dose. Simultaneously, the grain quality did not change significantly. In some locations, a decrease in the content of nitrates in the soil was observed, which may mean a greater uptake of this nutrient by plants and an increase in the content of some available macro- and micro-elements, mainly phosphorus, magnesium, zinc, copper and iron, and soil organic carbon. Introducing the studied treatment and limiting the fertilization with mineral nitrogen of wheat in Poland by only 30 kg ha−1 N would save its consumption by 72 thousand t per year.

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In vitro screening of zinc solubilizing rhizospheric isolates for agrochemicals compatibility

Cited by 2 publications

References 11 publications

Impact of carbendazim on cellular growth, defence system and plant growth promoting traits of Priestia megaterium ANCB-12 isolated from sugarcane rhizosphere

Impact of carbendazim on cellular growth, defence system and plant growth promoting traits of Priestia megaterium ANCB-12 isolated from sugarcane rhizosphere

Is It Possible to Maintain the Quantity and Quality of Winter Wheat Grain by Replacing Part of the Mineral Nitrogen Dose by Growth Activators and Plant Growth-Promoting Rhizobacteria (PGPR)?

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