Phytases from microbes in phosphorus acquisition for plant growth promotion and soil health

Kour, Divjot; Kaur, Tanvir; Yadav, Neelam; Rastegari, Ali; Singh, Bijender; Kumar, Vinod; Yadav, Ajar Nath

doi:10.1016/b978-0-12-820526-6.00011-7

Cited by 21 publications

(4 citation statements)

References 163 publications

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“…The positive effect of phosphate-solubilizing bacteria and mycorrhiza fungi on percentage colonization, yield, and yield components of wheat, especially in water-stressed conditions, can be attributed to bacteria producing auxin, organic acids, siderophore, and mycorrhiza fungi inoculating roots, increasing soil volume and thus water and phosphorus absorption for the plant ( Azarmi Atajan et al, 2019 ). According to wheat research, bio-fertilizers that contain growth-promoting bacteria (PGPR) could dissolve phosphate and potassium while boosting access to insoluble and inaccessible trace elements ( Danish and Zafar-ul-Hye, 2019 ; Kour et al, 2020 ; Rashid et al, 2021 ). Mahato and Kafle.…”

Section: Discussionmentioning

confidence: 99%

Soil Microorganisms and Seaweed Application With Supplementary Irrigation Improved Physiological Traits and Yield of Two Dryland Wheat Cultivars

et al. 2022

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To evaluate the effect of useful soil microorganisms and organic compounds on physiological characteristics and yield of two wheat cultivars under supplementary irrigation conditions, a study was conducted in the Agriculture Research Farm of Kurdistan University during the two cropping seasons of 2017–2018 and 2018–2019. A split–split plot-based study on a randomized complete block design with four replicates was used as an experimental design. The main factor was irrigation at three levels, including control without irrigation, supplementary irrigation in the booting stage, and supplementary irrigation in the booting and flowering stages. Two wheat cultivars, namely, Sardari and Sirvan, as sub-factors and application of bio-fertilizers in eight levels, including the use of bio-fertilizers containing: Mycorrhiza, Seaweed extract, Nitrozist and Phosphozist, Mycorrhiza + Nitrozist and Phosphozist, Seaweed extract + Nitrozist and Phosphozist, Mycorrhiza + Seaweed extract, Mycorrhiza + Nitrozist and Phosphozist + Seaweed extract, and non-application of bio-fertilizers, were considered as sub-factors. The results of both seasons of the experiment showed that the application of bio-fertilizers compared to the control treatment at all irrigation levels increased root volume, leaf relative water content (RWC), membrane stability index (MSI), and photosynthetic pigment content. The highest amount of H2O2, proline, and soluble carbohydrates were obtained in wheat under dry land conditions, and supplementary irrigation, especially two-time irrigation, significantly reduced the values of these traits. Supplementary irrigation also increased grain yield, so that in the conditions of two-time irrigation compared to the non-irrigation treatment (dry land), in the first and second seasons, the grain yield increased by 79.51 and 78.69%, respectively. Application of bio-fertilizers (Mycorrhiza + Nitrozist and Phosphozist + Seaweed extract) in comparison with the non-application of these fertilizers, due to increased root volume, RWC, MSI, and content of photosynthetic pigments, increased the grain yield in the first and second seasons of the experiment by 8.04 and 6.96%, respectively. As a result, suitable microorganisms and seaweed can improve wheat resistance mechanisms to water deficit, which along with using supplementary irrigation that saves water consumption improves plant growth and yield in areas faced with water shortage.

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Section: Discussionmentioning

confidence: 99%

Soil Microorganisms and Seaweed Application With Supplementary Irrigation Improved Physiological Traits and Yield of Two Dryland Wheat Cultivars

et al. 2022

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“…They are capable of hydrolyzing phytic acid by acting on the phosphomonoester bonds present in the compound, originating two subgroups, myo-inositol hexaphosphate or phytate (salt form). This process means that, in addition to P, other nutrients associated with it also become available, such as zinc and iron [87,88]. Figure 4 shows the catalysis of phytases.…”

Section: Phytasesmentioning

confidence: 99%

Phosphorus-Solubilizing Microorganisms: A Key to Sustainable Agriculture

et al. 2023

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Phosphorus (P) is one of the essential macronutrients for plant growth, being a highly required resource to improve the productive performance of several crops, especially in highly weathered soils. However, a large part of the nutrients applied in the form of fertilizers becomes “inert” in the medium term and cannot be assimilated by plants. Rationalizing the use of phosphorus is a matter of extreme importance for environmental sustainability and socioeconomic development. Therefore, alternatives to the management of this nutrient are needed, and the use of P-solubilizing microorganisms is an option to optimize its use by crops, allowing the exploration of less available fractions of the nutrient in soils and reducing the demand for phosphate fertilizers. The objective of this study is to discuss the importance of phosphorus and how microorganisms can intermediate its sustainable use in agriculture. In this review study, we present several studies about the role of microorganisms as phosphorus mobilizers in the soil. We describe the importance of the nutrient for the plants and the main problems related to the unsustainable exploitation of its natural reserves and the use of chemical fertilizers. Mainly we highlight how microorganisms constitute a fundamental resource for the release of the inert portion of the nutrient, where we describe several mechanisms of solubilization and mineralization. We also discussed the benefits that the inoculation of P-solubilizing microorganisms provides to crops as well as practices of using them as bioinoculants. The use of microorganisms as inoculants is a viable resource for the future of sustainable agriculture, mainly because its application can significantly reduce the application of P and, consequently, reduce the exploitation of phosphorus and its reserves. In addition, new research must be conducted for the development of new technologies, prospecting new biological products, and improvement of management practices that allow for higher efficiency in the use of phosphorus in agriculture.

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“…Phosphorous (P) is an essential micronutrient that helps in the proper functioning of metabolic activities, glucose transport, development of roots, and many other physiological processes (Ahemad 2015 ). Since more than 75% of applied phosphorus forms complexes and are unavailable for plant uptake, endophytes may either solubilize precipitated phosphates by acidification, chelation (i.e., PO 4 3− ), ion exchange, and release of organic acid or secrete extracellular acid phosphatase to mineralize organic phosphorus resulting in phosphorous availability to plants (van der Hiejden et al 2008 ; Kour et al 2020a ; Singh et al 2020b ).…”

Section: Mechanisms Of Plant Growth Promotionmentioning

confidence: 99%

Endophytic Microbiomes and Their Plant Growth-Promoting Attributes for Plant Health

Ghosh

Bhagwat

Webster

2020

Environmental and Microbial Biotechnology

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Endophytes reside within internal tissues of living plants without causing any harm to the host. The influence of these microbial communities on plant growth, yield, stress, and disease resistance, has been identified as potential research priorities in agriculture. In this chapter, we aim to explore the diverse host–endophyte interactions for plant growth promotion and health. Initially, the colonization of endophytes in specific plant tissues is discussed along with their mechanism of entry, habitat selection, response to stimuli, and evasion of the plant immunity. Endophytic microbes promote plant growth through different types of direct and indirect mechanisms. Plant growth-promoting endophytes (PGPE) play a vital role in phytohormone production, nutrient acquisition, nitrogen fixation, and solubilization of minerals. Further, indirect mechanisms (like suppression of plant pathogens by producing volatile organic compounds, antagonizing agents, and quorum quenchers) are also discussed in detail. Siderophores production and the secretion of different hydrolytic enzymes like chitinases, glucanases, and proteases also help in the induction of systemic resistance and protection of the host plants. Bioactive metabolites derived from endophytes serve as excellent therapeutic agents and have potential applications in agriculture, cosmetics, pharmaceutical, and food industries. Hereby, this chapter highlights the scientific rationale behind using endophytic microbiomes as potential biofertilizers, biopesticides, and biocontrol agents.

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Phytases from microbes in phosphorus acquisition for plant growth promotion and soil health

Cited by 21 publications

References 163 publications

Soil Microorganisms and Seaweed Application With Supplementary Irrigation Improved Physiological Traits and Yield of Two Dryland Wheat Cultivars

Soil Microorganisms and Seaweed Application With Supplementary Irrigation Improved Physiological Traits and Yield of Two Dryland Wheat Cultivars

Phosphorus-Solubilizing Microorganisms: A Key to Sustainable Agriculture

Endophytic Microbiomes and Their Plant Growth-Promoting Attributes for Plant Health

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