Tiny microbes, big yields: Microorganisms for enhancing food crop production for sustainable development

Singh, Archana; Kumari, Rekha; Yadav, Ajar Nath; Mishra, Shaunak; Sachan, Ashish; Sachan, Shashwati Ghosh

doi:10.1016/b978-0-12-820526-6.00001-4

Cited by 69 publications

(19 citation statements)

References 88 publications

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“…An indirect mechanism is achieved by exerting antagonistic effects to tolerate numerous phytopathogens [137]. The direct strategy of PGPB includes nitrogen fixation, phosphate solubilization, and production of phytohormones and siderophores, which induce plant metabolism resulting in plant growth improvement [138], while the indirect strategy includes the increased activity of defense-related enzymes such as chitinase and β-1,3-glucanase, a reduction in endogenous stress-related ethylene (ET) and quenching the quorum sensing of phytopathogens [139,140]. Generally, the mechanisms of plant growth promotion may occur by solubilization of phosphorus, potassium and nitrogen uptake [141], and the regulation of phytohormones such as Indole-3-acetic acid (IAA) and gibberellic acid (GA 3 ), zeatin, abscisic acid and ethylene, which maintain the root system and consequently, increase water uptake and nutrient availability.…”

Section: Plant Growth-promoting Bacteria (Pgpb): Identification Classification and Mechanisms Of Action On Plantsmentioning

confidence: 99%

The Role of Plant Growth-Promoting Bacteria in Alleviating the Adverse Effects of Drought on Plants

Abdelaal

AlKahtani

Attia

et al. 2021

Biology

160

100

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Plant growth-promoting bacteria play an essential role in enhancing the physical, chemical and biological characters of soils by facilitating nutrient uptake and water flow, especially under abiotic stress conditions, which are major constrains to agricultural development and production. Drought is one of the most harmful abiotic stress and perhaps the most severe problem facing agricultural sustainability, leading to a severe shortage in crop productivity. Drought affects plant growth by causing hormonal and membrane stability perturbations, nutrient imbalance and physiological disorders. Furthermore, drought causes a remarkable decrease in leaf numbers, relative water content, sugar yield, root yield, chlorophyll a and b and ascorbic acid concentrations. However, the concentrations of total phenolic compounds, electrolyte leakage, lipid peroxidation, amounts of proline, and reactive oxygen species are considerably increased because of drought stress. This negative impact of drought can be eliminated by using plant growth-promoting bacteria (PGPB). Under drought conditions, application of PGPB can improve plant growth by adjusting hormonal balance, maintaining nutrient status and producing plant growth regulators. This role of PGPB positively affects physiological and biochemical characteristics, resulting in increased leaf numbers, sugar yield, relative water content, amounts of photosynthetic pigments and ascorbic acid. Conversely, lipid peroxidation, electrolyte leakage and amounts of proline, total phenolic compounds and reactive oxygen species are decreased under drought in the presence of PGPB. The current review gives an overview on the impact of drought on plants and the pivotal role of PGPB in mitigating the negative effects of drought by enhancing antioxidant defense systems and increasing plant growth and yield to improve sustainable agriculture.

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Section: Plant Growth-promoting Bacteria (Pgpb): Identification Classification and Mechanisms Of Action On Plantsmentioning

confidence: 99%

The Role of Plant Growth-Promoting Bacteria in Alleviating the Adverse Effects of Drought on Plants

Abdelaal

AlKahtani

Attia

et al. 2021

Biology

160

100

View full text Add to dashboard Cite

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“…The mechanism of plant growth-promoting fungi has been involved in both direct and indirect mechanism. Direct mechanism (phosphorus, potassium zinc) and plant growth regulators (auxins, cytokinin, ACC deaminase, gibberellins, ethylene, abscisic acid) as well as production of siderophores (Rastegari et al 2020;Singh et al 2020;Yadav et al 2020e) (Fig. 3) and for more details are added into table (2) in supplementary materials.…”

Section: Mechanism Of Plant Growth Promotionmentioning

confidence: 99%

Beneficial fungal communities from different habitats and their roles in plant growth promotion and soil health

Devi

Kaur

Kour

et al. 2020

MBJ

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Microbes are ubiquitous in nature, and plant-microbe interactions are a key strategy for colonizing diverse habitats. Fungi are producing a wide range of secondary metabolites and bioactive compounds, which are probable alternative sources of drugs and/or antibiotics. Fungi are associated with the crops and plays an important role in plant growth promotion and enhanced soil fertility using different PGP mechanism such as solubilization of phosphorus, zinc, potassium; production of plant growth regulator (auxins, cytokinin, gibberellins, ethylene and abscisic acid); hydrolytic enzymes (xylanases, laccase, pectinases, cellulases); and siderophores. Besides eliciting plant defence reaction against pathogens; PGP fungi also help in plant growth promotion and alleviation of different abiotic stresses under harsh environments. The PGP fungi have reported from different genera of phyla Chytridiomycota, Zygomycota, Glomeromycota, Ascomycota, and Basidiomycota. Fungi also have significant potential applications in various industries like medical, and food. In the medical applications, fungi and fungal products are used to control disease in human and animals. In the fermentation industries fungi used to make alcoholic beverages, cheeses, bread, kefir, yogurt and various other food preparations and the agricultural sectors used to make plant healthy and protects to pathogens. The present review, deals with the biodiversity of beneficial fungi from different habitats and their biotechnological applications in plant growth promotion and soil health.

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“…121 There has been ongoing work attempting to engineer plants to produce certain volatiles for the benefit of pest management, 122 and similar ecological engineering may be possible using microbes. 123 Optimizing microbial volatile emissions by a microbial species, while minimizing its detrimental effect on stored grain, may allow for the use of self-renewing volatile sources in a behaviorally-based trap that may have the potential to last longer and be more effective than conventional lure formulations. Unfortunately, little work has explored this potential avenue in the context of stored products.…”

Section: Future Directionsmentioning

confidence: 99%

Towards developing areawide semiochemical‐mediated, behaviorally‐based integrated pest management programs for stored product insects

Morrison

Scully

Campbell

2021

Pest Management Science

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With less emphasis on fumigation after harvest, due to the phase‐out of methyl bromide and increasing phosphine resistance, diversified postharvest integrated pest management (IPM) programs are needed. Here, we synthesize knowledge on semiochemical‐mediated, behaviorally‐based tactics, wherein semiochemicals are deployed to manipulate pest behavior to protect commodities. We note that beyond monitoring, commercial use is limited to mating disruption targeting mostly moths. In total, behaviorally‐based tactics have been attempted for eight species of stored product insects from two orders and six families. Eighteen challenges were identified that may have prevented robust implementation of semiochemicals for behaviorally‐based management in stored products, including direct competition with ubiquitous food cues, and the diverse insect assemblages that colonize food facilities. Further, we discuss the scientific data and methods required to support stakeholder acceptance of semiochemicals at food facilities, including demonstrating that pests are not attracted from the landscape and minimal spillover around pheromones. We sketch a robust areawide behaviorally‐based IPM program after harvest, and clarify properties for improving semiochemicals, including incorporating those that are broad spectrum, competitive with food cues, potent at low concentration, and exhibit dose‐dependent attraction. The research gaps and testable hypotheses described here will speed developing behaviorally‐based tactics at food facilities. © 2021 Society of Chemical Industry

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Tiny microbes, big yields: Microorganisms for enhancing food crop production for sustainable development

Cited by 69 publications

References 88 publications

The Role of Plant Growth-Promoting Bacteria in Alleviating the Adverse Effects of Drought on Plants

The Role of Plant Growth-Promoting Bacteria in Alleviating the Adverse Effects of Drought on Plants

Beneficial fungal communities from different habitats and their roles in plant growth promotion and soil health

Towards developing areawide semiochemical‐mediated, behaviorally‐based integrated pest management programs for stored product insects

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