Potential ofAzotobacterspp. as biocontrol agents againstRhizoctonia solaniandFusarium oxysporumin cotton (Gossypium hirsutum), guar (Cyamopsis tetragonoloba) and tomato (Lycopersicum esculentum)

Chauhan, Sapna; Wadhwa, Kunal; Vasudeva, Manjula; Narula, Neeru

doi:10.1080/03650340.2011.590134

Cited by 24 publications

(14 citation statements)

References 27 publications

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“…chroococcum strains was observed against other pathogens as Rhizoctonia solani (Chauhan et al, 2012 (Kasim et al, 2013). Moreover, increase in proline production at the highest NaCl concentrations (7.5% and 10%) by A. chroococcum 76A highlighted the tolerance to osmotic stress of this strain.…”

Section: Discussionmentioning

confidence: 78%

“…The production of iron chelating siderophores is another important function of strains A. chroococcum 67B and A. chroococcum 76A with a dual effect of promoting plant growth by increasing nutrient availability to the plant and at the same time reducing iron availability for soil-borne plant pathogens (Chauhan et al, 2012). These properties have been documented in some Azotobacter species for which a remarkable antagonistic activity towards a wide range of phytopathogens was reported (Kravchenko et al, 2002).…”

Section: Discussionmentioning

confidence: 92%

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Assessment of plant growth promoting activities and abiotic stress tolerance of Azotobacter chroococcum strains for a potential use in sustainable agriculture

Viscardi

Ventorino

Durán

et al. 2016

J. Soil Sci. Plant Nutr.

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This study aimed to select and characterize bacterial strains with multiple plant growth promotion properties able to tolerate drought and salinity stress in order to improve plant growth performance under abiotic stresses. Plant growth promoting activities were evaluated in 106 bacterial strains isolated by soil, compost, lignocellulosic biomasses and food matrices. Two strains A. chroococcum 67B and 76A were selected for their multiple plant growth promotion activities (N 2 -fixing activity, synthesis of siderophores and indole-3-acetic acid) as well as antimicrobial activity against Sclerotinia minor. Moreover, the selected strains were tested for their tolerance to drought and salinity stress in in vitro experiments evaluating their growth, production of SOD, CAT, proline and ACC deaminase. The two Azotobacter chroococcum strains exhibited high tolerance to salt and drought stresses and could alleviate the negative effects exerted by abiotic stress on tomato plants. Overall results showed that the strains Azotobacter chroococcum 67B and Azotobacter chroococcum 76A could be interesting candidates to be employed as bio-effector in sustainable agricultural systems also under stressful conditions leading to improved economic and environmental benefits.

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Section: Discussionmentioning

confidence: 78%

Section: Discussionmentioning

confidence: 92%

Assessment of plant growth promoting activities and abiotic stress tolerance of Azotobacter chroococcum strains for a potential use in sustainable agriculture

Viscardi

Ventorino

Durán

et al. 2016

J. Soil Sci. Plant Nutr.

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show abstract

“…Azotobacter spp. were also reported as possible biocontrol agents against Fusarium oxysporum (Chauhan et al, 2012), Rhizoctonia solani (Fatima et al, 2009) or Macrophomina phaseolina (Dubey et al, 2012). 4.1.2.4.…”

Section: Promising Bacterial Genera For Agricultural Practicesmentioning

confidence: 99%

“…Due to their plant-growth promoting traits, Azotobacter spp. have been applied into plants to evaluate their capabilities to improve crop yields; examples are: cotton (Chauhan et al, 2012;Romero-Perdomo et al, 2017), sesame (Dubey et al, 2012), maize (Shirinbayan et al, 2019), wheat (Mahato and Kafle, 2018), rice (Sahoo et al, 2013), tomato (Chauhan et al, 2012), or maize (Shirinbayan et al, 2019). Growth improvement was measured through the increase to disease resistance (Chauhan et al, 2012;Dubey et al, 2012), plant biomass (Mahato and Kafle, 2018;Romero-Perdomo et al, 2017;Shirinbayan et al, 2019), nitrogen and Fe concentration (Shirinbayan et al, 2019), grain yield (Dubey et al, 2012;Mahato and Kafle, 2018) and drought resistance (Shirinbayan et al, 2019).…”

Section: Promising Bacterial Genera For Agricultural Practicesmentioning

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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“…Cotton and sugarcane are the most important cash crops in Pakistan. These crops are prone to various diseases by fungal pathogens as Rhizoctonia solani, Colletotrichum, gossypii , Fusarium oxysporum , Fusarium moniliforme, Fusarium solani and Verticillium dahlia (1). The use of fungicides to secure these important crops are most commonly practiced.…”

Section: Introductionmentioning

confidence: 99%

Isolation and Characterization of Plant Growth Promoting Antagonistic Bacteria from Cotton and Sugarcane Plants for Suppression of Phytopathogenic Fusarium Species

Zain

Yasmin

Hafeez³

2019

Iran J Biotech

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Background Plant Growth Promoting Rhizobacteria (PGPR) may be utilized to augment plant growth and suppress the plant pathogens. Objective: The present study was conducted to isolate and characterize the antagonistic bacteria indigenous to cotton and sugarcane rhizosphere in Pakistan, and to evaluate their ability to suppress phytopathogenic Fusarium spp. Out of 63 isolates 37 different morphotypes were studied for their antagonistic activity against Fusarium monoliformae , Fusarium oxysporum and Fusarium solani. Among these 31 strains showed the percentage suppression ranging from 40 to 66% against Fusarium spp. Objectives The antagonistic bacteria having antifungal activity were studied for different morphological and physiological characteristics using Gram staining and light microscopy. Most of them were Gram negative and tentatively identified as Pseudomonas spp. The selected strains were screened in vitro for plant growth regulation and antifungal traits. Material and Methods Our study included 1000 premature CAD patients that classified into two groups with history of MI (n = 461) and without of MI (n = 539). The polymorphism variants in 10% of samples were determined by PCR-RFLP technique and genotyping of the polymorphism in all subjects was conducted by High Resolution Melting method. Given the two conditions of patients residing in Tehran and also faced with their first episode of MI, 640 out of 1000 study samples that had been previously followed-up were assessed in a retrospective cohort phase regarding long-term major adverse cardiac events (MACE). Results Four bacterial strains were able to produce the chitinase enzyme while four other bacterial strains showed protease production. Ten strains were positive for HCN production. Out of 37, eight strains showed phosphate solubilization ranging from 13 to 24 µg/ml. eighteen strains produced indole acetic acid ranging from 5 to 19 µg/ml. Conclusions This study identified specific traits in the isolated rhizobacteria which make them good candidates as PGPR and might contribute to enhance growth of crop plants. This information is of general interest and also helpful for devising strategies to manage diseases caused by Fusarium in cotton and sugarcane.

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Potential ofAzotobacterspp. as biocontrol agents againstRhizoctonia solaniandFusarium oxysporumin cotton (Gossypium hirsutum), guar (Cyamopsis tetragonoloba) and tomato (Lycopersicum esculentum)

Cited by 24 publications

References 27 publications

Assessment of plant growth promoting activities and abiotic stress tolerance of Azotobacter chroococcum strains for a potential use in sustainable agriculture

Assessment of plant growth promoting activities and abiotic stress tolerance of Azotobacter chroococcum strains for a potential use in sustainable agriculture

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

Isolation and Characterization of Plant Growth Promoting Antagonistic Bacteria from Cotton and Sugarcane Plants for Suppression of Phytopathogenic Fusarium Species

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