Variation in Soil Microbial Population and Soil Enzymatic Activities Under Zincated Nanoclay Polymer Composites (ZNCPCs), Nano-ZnO and Zn Solubilizers in Rice Rhizosphere

Dubey, Akhila Nand; Chattopadhyaya, N.; Mandal, Nintu

doi:10.1007/s40003-020-00488-x

Cited by 17 publications

(4 citation statements)

References 27 publications

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“…The significant increase in plant heights and productive tillers might be attributed to the adequate Zn supply, which accelerated the enzymatic activities and the auxin metabolism in plants (Dubey et al 2021), along with the plant growth-promoting traits of bacteria under investigation. Moreover, the results were in accordance with the observations of Naik and Das (2007), which mentioned that the adequate amount of Zn supply produced more productive tillers per square meter.…”

Section: Discussionmentioning

confidence: 99%

Role of Zinc Solubilizing Bacteria in Enhancing Growth and Nutrient Accumulation in Rice Plants (Oryza sativa) Grown on Zinc (Zn) Deficient Submerged Soil

Prathap

Thiyageshwari

Krishnamoorthy

et al. 2021

J Soil Sci Plant Nutr

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Zinc (Zn) is a mineral that is required for normal plant and human metabolism; nevertheless, Zn deficiency in soil poses a significant threat to long-term agricultural productivity. In this investigation, the impacts of zinc solubilizing bacteria (ZSB) on Zn release, rice plant growth, and yield parameters in the Zn-deficient submerged soil were evaluated. The Zn solubilization capacity of five different bacterial isolates was tested, followed by an incubation study that was conducted for 9 weeks under the submerged condition in the Zn-deficient calcareous sandy clay loam soil. A field experiment was conducted in Zn-deficient soil with randomized block design and replicated thrice to find out the impact of two Zn sources, viz., zinc carbonate (ZnCO 3 ) and zinc sulfate (ZnSO 4 ) with the efficient ZSB on rice growth and Zn accumulation in the rice grains. Out of five tested bacterial isolates, Bacillus aryabhattai KSB N 2 K 7 released the significantly higher amount of Zn in the liquid medium amended with insoluble Zn sources, such as zinc oxide (ZnO) and zinc carbonate (ZnCO 3 ) of 185.7 mg L -1 and 185.4 mg L -1 , respectively. The incubation study revealed that the application of ZnSO 4 (25 kg ha -1 ) with B. aryabhattai KSB N 2 K 7 showed a significantly higher range of Zn release (3.81 to 5.12 mg kg -1 ) during 9 weeks of incubation as compared with that of ZnCO 3 (11 kg ha -1 ) with B. aryabhattai KSB N 2 K 7 (3.52 to 4.48 mg kg -1 ). The application of Zn sources with B. aryabhattai KSB N 2 K 7 resulted in a significant increase in plant biometrics. The application of 25 kg ZnSO 4 per hectare with B. aryabhattai KSB N 2 K 7 resulted in the significantly higher grain yield of 5806 kg ha -1 than that of treatment containing recommended dose of fertilizers alone. The application of 25 kg ZnSO 4 per hectare with B. aryabhattai KSB N 2 K 7 registered significantly higher Zn accumulation in grain compared to all other treatments. Thus, the results demonstrated the crucial role of Bacillus aryabhattai KSB N 2 K 7 in Zn release and rice fortification in the Zn-deficient submerged soil.

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Section: Discussionmentioning

confidence: 99%

Role of Zinc Solubilizing Bacteria in Enhancing Growth and Nutrient Accumulation in Rice Plants (Oryza sativa) Grown on Zinc (Zn) Deficient Submerged Soil

Prathap

Thiyageshwari

Krishnamoorthy

et al. 2021

J Soil Sci Plant Nutr

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“…When the activity of ACP in soil is low, microorganisms may adjust the activity of ALP in response to the nutritional needs of plants and microbes [58]. The activity of soil microorganisms varies throughout crop development, increasing in tandem with APase activity as a response to crop growth, thereby reflecting the complex interactions between soil, plants, and the atmosphere [59]. The activities of ACP and ALP are positively linked with the biomass of fungi, bacteria in general, and specifically actinobacteria (Figure 1, Table S4).…”

Section: Soil Microbes and Faunamentioning

confidence: 99%

Relationship among Soil Biophysicochemical Properties, Agricultural Practices and Climate Factors Influencing Soil Phosphatase Activity in Agricultural Land

Campdelacreu Rocabruna,

Domene,

Preece

et al. 2024

Agriculture

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Phosphorus (P) is a vital macronutrient crucial for crop productivity. Plants absorb P salts, mainly orthophosphate, from the soil, yet the primary P source resides in organic materials. Acid and alkaline phosphatases (the predominant forms of soil phosphomonoesterases (APases)) are crucial for alleviating P deficiency in plants and play a vital role in releasing P from organic materials via hydrolysis. Our aim was to summarize the direction of the relationship between a variety of influential factors on acid and alkaline phosphatase activity in agricultural lands and identify gaps in knowledge. Our findings indicate a strong linkage between both APases and soil pH, positively influenced by clay content, organic matter, microbial biomass carbon, and nitrogen. Adopting healthy soil practices like balanced organic fertilizer usage, optimal soil water levels, reduced tillage, crop rotation, and using beneficial plant microbes help boost both APase activity. However, the connection between APases and crop productivity remains uncertain due to insufficient research in this area. We identified gaps in knowledge in relation to meso-macrofauna, alongside essential plant nutrients such as potassium, nutrient ratios, and the synergistic effects of various factors on APase response. Understanding the rapid, efficient assimilation of P through APases in the plant-soil and/or plant-microbiota ecosystem it can be crucial for crop productivity and yields.

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“…Consequently, the application of inorganic Zn fertilizers is common practice in many countries, with one application theoretically providing enough Zn to last for up to six crop rotations [63]. However, due to the rapid fixation and immobilization of Zn in most soils, only 1-20% of the applied Zn is absorbed by crops, rendering this approach financially costly and environmentally unsustainable [63,71,72]. Therefore, research efforts turned to developing biofertilizers that can mobilize insoluble Zn pools already present in soils [3,63,66].…”

Section: Zinc (Zn)mentioning

confidence: 99%

Micronutrients in Food Production: What Can We Learn from Natural Ecosystems?

Denton-Thompson

Sayer

2022

Soil Systems

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Soil micronutrients limit crop productivity in many regions worldwide, and micronutrient deficiencies affect over two billion people globally. Microbial biofertilizers could combat these issues by inoculating arable soils with microorganisms that mobilize micronutrients, increasing their availability to crop plants in an environmentally sustainable and cost-effective manner. However, the widespread application of biofertilizers is limited by complex micronutrient–microbe–plant interactions, which reduce their effectiveness under field conditions. Here, we review the current state of seven micronutrients in food production. We examine the mechanisms underpinning microbial micronutrient mobilization in natural ecosystems and synthesize the state-of-knowledge to improve our overall understanding of biofertilizers in food crop production. We demonstrate that, although soil micronutrient concentrations are strongly influenced by soil conditions, land management practices can also substantially affect micronutrient availability and uptake by plants. The effectiveness of biofertilizers varies, but several lines of evidence indicate substantial benefits in co-applying biofertilizers with conventional inorganic or organic fertilizers. Studies of micronutrient cycling in natural ecosystems provide examples of microbial taxa capable of mobilizing multiple micronutrients whilst withstanding harsh environmental conditions. Research into the mechanisms of microbial nutrient mobilization in natural ecosystems could, therefore, yield effective biofertilizers to improve crop nutrition under global changes.

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Variation in Soil Microbial Population and Soil Enzymatic Activities Under Zincated Nanoclay Polymer Composites (ZNCPCs), Nano-ZnO and Zn Solubilizers in Rice Rhizosphere

Cited by 17 publications

References 27 publications

Role of Zinc Solubilizing Bacteria in Enhancing Growth and Nutrient Accumulation in Rice Plants (Oryza sativa) Grown on Zinc (Zn) Deficient Submerged Soil

Role of Zinc Solubilizing Bacteria in Enhancing Growth and Nutrient Accumulation in Rice Plants (Oryza sativa) Grown on Zinc (Zn) Deficient Submerged Soil

Relationship among Soil Biophysicochemical Properties, Agricultural Practices and Climate Factors Influencing Soil Phosphatase Activity in Agricultural Land

Micronutrients in Food Production: What Can We Learn from Natural Ecosystems?

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