Bottlenecks in commercialisation and future prospects of PGPR

Tabassum, Bushra; Khan, Anwar; Tariq, Muhammad; Ramzan, Memoona; Khan, Muhammad Saleem Iqbal; Shahid, Naila; Aaliya, Khadija

doi:10.1016/j.apsoil.2017.09.030

Cited by 223 publications

(140 citation statements)

References 158 publications

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“…Furthermore, the application of the Azospirillum genus has reached N3.5 million ha in South America in 2014, with a recorded average yield improvement of 10 % (Cassán and Diaz-Zorita, 2016). The use of different microbial agents by foliar application or by seed inoculation was also reported to have positive effects on major crops, such as rice, wheat, sugar beet, corn, and cotton (Tabassum et al, 2017). It is forecast that PGPB market share will reach USD 1.66 billion by 2022 (Timmusk et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Promising bacterial genera for agricultural practices: An insight on plant growth-promoting properties and microbial safety aspects

Ferreira

Soares

2019

Science of The Total Environment

168

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In order to address the ever-increasing problem of the world's population food needs, the optimization of farming crops yield, the combat of iron deficiency in plants (chlorosis) and the elimination/reduction of crop pathogens are of key challenges to solve. Traditional ways of solving these problems are either unpractical on a large scale (e.g. use of manure) or are not environmental friendly (e.g. application of iron-synthetic fertilizers or indiscriminate use of pesticides). Therefore, the search for greener substitutes, such as the application of siderophores of bacterial source or the use of plant-growth promoting bacteria (PGPB), is presented as a very promising alternative to enhance yield of crops and performance. However, the use of microorganisms is not a risk-free solution and the potential biohazards associated with the utilization of bacteria in agriculture should be considered. The present work gives a current overview of the main mechanisms associated with the use of bacteria in the promotion of plant growth. The potentiality of several bacterial genera (Azotobacter, Azospirillum, Bacillus, Pantoea, Pseudomonas and Rhizobium) regarding to siderophore production capacity and other plant growth-promoting properties are presented. In addition, the field performance of these bacteria genera as well as the biosafety aspects related with their use for agricultural proposes are reviewed and discussed.

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Section: Introductionmentioning

confidence: 99%

Promising bacterial genera for agricultural practices: An insight on plant growth-promoting properties and microbial safety aspects

Ferreira

Soares

2019

Science of The Total Environment

168

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“…Also, the knowledge level farmers need to correctly apply bioinoculants is higher than with chemical fertilizers. The procedures for application are new and the benefits from that application may be unclear or different from the readily visible effect of chemicals, a risk that some farmers may not be willing to take (Tabassum et al 2017).…”

Section: Biosafety Tests For Bioinoculantsmentioning

confidence: 99%

Engineering root microbiomes for healthier crops and soils using beneficial, environmentally safe bacteria

et al. 2019

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The Green Revolution developed new crop varieties, which greatly improved food security worldwide. However, the growth of these plants relied heavily on chemical fertilizers and pesticides, which have led to an overuse of synthetic fertilizers, insecticides, and herbicides with serious environmental consequences and negative effects on human health. Environmentally friendly plant-growth-promoting methods to replace our current reliance on synthetic chemicals and to develop more sustainable agricultural practices to offset the damage caused by many agrochemicals are proposed herein. The increased use of bioinoculants, which consist of microorganisms that establish synergies with target crops and influence production and yield by enhancing plant growth, controlling disease, and providing critical mineral nutrients, is a potential solution. The microorganisms found in bioinoculants are often bacteria or fungi that reside within either external or internal plant microbiomes. However, before they can be used routinely in agriculture, these microbes must be confirmed as nonpathogenic strains that promote plant growth and survival. In this article, besides describing approaches for discovering plant-growth-promoting bacteria in various environments, including phytomicrobiomes and soils, we also discuss methods to evaluate their safety for the environment and for human health.

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“…In the indirect mechanism, PGPR can help to reduce the negative effect of stress or pathogen infection by a systemic response in the plant. The effects associated with the growth promotion of PGPR include the production of indoleacetic acid and hydrocyanic acid, the solubilization of phosphates and increased enzymatic activity . Another advantage of PGPR is that, being organic, they are environmentally friendly…”

Section: Introductionmentioning

confidence: 99%

“…The effects associated with the growth promotion of PGPR include the production of indoleacetic acid and hydrocyanic acid, the solubilization of phosphates and increased enzymatic activity. [9][10][11][12] Another advantage of PGPR is that, being organic, they are environmentally friendly. 8 Even though the benefits of PGPR have been known for several years and much research has been published, the direct inoculation of bacteria into bare soil without an adequate vehicle could cause a decline in the number of viable microorganisms, and a reduction in their activity is still a problem that needs a solution.…”

Section: Introductionmentioning

confidence: 99%

Root inoculation of green bell pepper (Capsicum annum) with Bacillus amyloliquefaciens BBC047: effect on biochemical composition and antioxidant capacity

et al. 2019

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BACKGROUND Consumption of bell peppers is recommended because of their bioactive compound content and their positive effects on health. Growth‐promoting rhizobacteria are popular because of their ability to promote plant growth by improving the fixation of nutrients or by inducing a systemic response. Green bell pepper (Capsicum annum) roots were inoculated with an autochthonous strain of Bacillus amyloliquefaciens, at different stages of development: T1, inoculation in the seedbed before transplant; T2, inoculation at and after transplant; T3, inoculation in the seedbed, at and after transplant. Bell pepper plants without inoculation were considered as control. Physicochemical composition and antioxidant activity of the fruits were measured to select the best treatment. RESULTS T1 increased crude proteins, fat, Ca, Fe, vitamin C, total phenolic content, antioxidant capacity by DPPH and by ORAC. On the other hand, T1 decreased reducing sugars, K and Cu content. No significant differences for total carbohydrates, ash and photosynthetic pigments were found. CONCLUSION Inoculated green bell peppers have enhanced its functional value and could be considered as an important source of bioactive compounds with elevated antioxidant activity. © 2019 Society of Chemical Industry

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Bottlenecks in commercialisation and future prospects of PGPR

Cited by 223 publications

References 158 publications

Promising bacterial genera for agricultural practices: An insight on plant growth-promoting properties and microbial safety aspects

Promising bacterial genera for agricultural practices: An insight on plant growth-promoting properties and microbial safety aspects

Engineering root microbiomes for healthier crops and soils using beneficial, environmentally safe bacteria

Root inoculation of green bell pepper (Capsicum annum) with Bacillus amyloliquefaciens BBC047: effect on biochemical composition and antioxidant capacity

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