Agronomic biofortification of maize (<i>Zea mays</i> L.) with zinc by using of graded levels of zinc in combination with zinc solubilizing bacteria and Arbuscular mycorrhizal fungi

Suganya, A.; Saravanan, A.; Baskar, M.; Pandiyarajan, P.; Kavimani, R.

doi:10.1080/01904167.2020.1845383

Cited by 8 publications

(5 citation statements)

References 4 publications

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“…Zinc (Zn) is an essential micronutrient in plant growth and development. It plays an important role in various enzymatic reactions, metabolic processes, redox reactions, plant hormone metabolism, promoting the development of plant reproductive organs, resistance to infection by certain pathogens, and improving plant resistance to stress (Shemi et al, 2021;Suganya et al, 2021). But because of the adsorption and fixation of calcium carbonate, organic matter, phosphate, and clay in the soil, the effectiveness of Zn in the soil is low (Cakmak, 2008).…”

Section: Introductionmentioning

confidence: 99%

Maize Genotypes With Different Zinc Efficiency in Response to Low Zinc Stress and Heterogeneous Zinc Supply

et al. 2021

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All over the world, a common problem in the soil is the low content of available zinc (Zn), which is unevenly distributed and difficult to move. However, information on the foraging strategies of roots in response to heterogeneous Zn supply is still very limited. Few studies have analyzed the adaptability of maize inbred lines with different Zn efficiencies to different low Zn stress time lengths in maize. This study analyzed the effects of different time lengths of low Zn stress on various related traits in different inbred lines. In addition, morphological plasticity of roots and the response of Zn-related important gene iron-regulated transporter-like proteins (ZIPs) were studied via simulating the heterogeneity of Zn nutrition in the soil. In this report, when Zn deficiency stress duration was extended (from 14 to 21 days), under Zn-deficient supply (0.5 μM), Zn efficiency (ZE) based on shoot dry weight of Wu312 displayed no significant difference, and ZE for Ye478 was increased by 92.9%. Under longer-term Zn deficiency, shoot, and root dry weights of Ye478 were 6.5 and 2.1-fold higher than those of Wu312, respectively. Uneven Zn supply strongly inhibited the development of some root traits in the -Zn region. Difference in shoot dry weights between Wu312 and Ye478 was larger in T1 (1.97 times) than in T2 (1.53 times). Under heterogeneous condition of Zn supply, both the –Zn region and the +Zn region upregulated the expressions of ZmZIP3, ZmZIP4, ZmZIP5, ZmZIP7, and ZmZIP8 in the roots of two inbred lines. These results indicate that extended time length of low-Zn stress will enlarge the difference of multiple physiological traits, especially biomass, between Zn-sensitive and Zn-tolerant inbred lines. There were significant genotypic differences of root morphology in response to heterogeneous Zn supply. Compared with split-supply with +Zn/+Zn, the difference of above-ground biomass between Zn-sensitive and Zn-tolerant inbred lines under split-supply with –Zn/+Zn was higher. Under the condition of heterogeneous Zn supply, several ZmZIP genes may play important roles in tolerance to low Zn stress, which can provide a basis for further functional characterization.

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Section: Introductionmentioning

confidence: 99%

Maize Genotypes With Different Zinc Efficiency in Response to Low Zinc Stress and Heterogeneous Zinc Supply

et al. 2021

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Section: Zn Mobilization By Microbesmentioning

confidence: 99%

“…In soils where Zn deficiency is caused by low concentrations of total Zn rather than low availability, the application of Zn fertilizers in combination with biofertilizers prevents the applied Zn from being instantly immobilized [73][74][75]. Using this dual application, farmers can biofortify their crops whilst applying less Zn, which is more financially and environmentally sustainable [75,76]. However, the highly variable sensitivity of microbes to Zn toxicity and variable microbial responses among taxa can limit the co-application of biofertilizers and conventional Zn fertilizers [77,78].…”

Section: Zn Mobilization By Microbesmentioning

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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“…Arbuscular mycorrhizae (AM) can alter the physicochemical properties of soil, and through phosphatase, dehydrogenase activities and releasing glomalin glycoprotein, they facilitate the uptake of Zn from the soil. A field study in maize for increasing grain Zn content by the activity of zinc solubilising bacteria and AM mycorrhizae has found promising results (Suganya et al, 2020 ).…”

Section: Zinc From Soil To Plantsmentioning

confidence: 99%

Seed nutripriming with zinc is an apt tool to alleviate malnutrition

Veena

Puthur

2021

Environ Geochem Health

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More than 2 billion people worldwide suffer from micronutrient malnutrition, sometimes known as hidden hunger. Zn malnutrition affects around a third of the world's population. The physicochemical features of soil, which limit the availability of Zn to plants, cause Zn deficiency. The eating habits of certain populations are more depended on Zn-deficient staple foods. Due to the high expense and certain interventions such as diet diversification, zinc supplementation and food fortification cannot be achieved in disadvantaged populations. Biofortification is the most practical technique for alleviating Zn malnutrition. Seed priming with nutrients is a promising biofortification approach for edible crops. Seed nutripriming with zinc is a cost-effective and environmentally benign approach of biofortification. Seeds can be nutriprimed with Zn using a variety of methods such as Zn fertilisers, Zn chelated compounds and Zn nanoparticles. Nutripriming with nanoparticles is gaining popularity these days due to its numerous advantages and vast biofortification potential. Seeds enriched with Zn also aid plant performance in Zn-deficient soil. Zn an essential trace element can regulate physiological, biochemical and molecular processes of plant cells and thus can enhance germination, growth, yield and bioavailable Zn in edible crops. Moreover, zinc emerges as an important element of choice for the management of COVID-19 symptoms.

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Agronomic biofortification of maize (Zea mays L.) with zinc by using of graded levels of zinc in combination with zinc solubilizing bacteria and Arbuscular mycorrhizal fungi

Cited by 8 publications

References 4 publications

Maize Genotypes With Different Zinc Efficiency in Response to Low Zinc Stress and Heterogeneous Zinc Supply

Maize Genotypes With Different Zinc Efficiency in Response to Low Zinc Stress and Heterogeneous Zinc Supply

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

Seed nutripriming with zinc is an apt tool to alleviate malnutrition

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