Potential of some bacteria for biological control of postharvest citrus green mould caused by Penicillium digitatum

Mohammadi, Parisa; Tozlu, Elif; Kotan, Recep; Kotan, Merve Şenol

doi:10.17221/55/2016-pps

Cited by 61 publications

(14 citation statements)

References 47 publications

(46 reference statements)

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“…Besides fungicides, other agricultural practices such as irradiation application (light emitting diode, gamma radiation, or UV radiation) [14,15,16,17], thermotherapy [18,19,20], biocontrol agents (BCA) [21,22,23], and salt solution [24,25] may be used to control postharvest diseases. In the past thirty years, there have been extensive research activities to explore and develop strategies based on microbial antagonists to biologically control postharvest pathogens [26,27,28,29,30].…”

Section: Alternative Control Methodsmentioning

confidence: 99%

Biological Control of Citrus Postharvest Phytopathogens

Bazioli

Belinato

Costa

et al. 2019

Toxins

111

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Citrus are vulnerable to the postharvest decay caused by Penicillium digitatum, Penicillium italicum, and Geotrichum citri-aurantii, which are responsible for the green mold, blue mold, and sour rot post-harvest disease, respectively. The widespread economic losses in citriculture caused by these phytopathogens are minimized with the use of synthetic fungicides such as imazalil, thiabendazole, pyrimethanil, and fludioxonil, which are mainly employed as control agents and may have harmful effects on human health and environment. To date, numerous non-chemical postharvest treatments have been investigated for the control of these pathogens. Several studies demonstrated that biological control using microbial antagonists and natural products can be effective in controlling postharvest diseases in citrus, as well as the most used commercial fungicides. Therefore, microbial agents represent a considerably safer and low toxicity alternative to synthetic fungicides. In the present review, these biological control strategies as alternative to the chemical fungicides are summarized here and new challenges regarding the development of shelf-stable formulated biocontrol products are also discussed.

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Section: Alternative Control Methodsmentioning

confidence: 99%

Biological Control of Citrus Postharvest Phytopathogens

Bazioli

Belinato

Costa

et al. 2019

Toxins

111

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“…This ecological feature of the rhizosphere provides carbon and energy sources to microorganisms, thereby facilitating a rapid rate of microbial growth and activity that can benefit the roots. While PGPR communities are able to colonize roots and stimulate plant growth 5 , it is possible to inoculate the rhizosphere artificially with more of the relevant PGPRs and increase their populations in the rhizosphere, thereby increasing the occurrence of benefits for plant roots.…”

Section: Introductionmentioning

confidence: 99%

Characterization of plant growth-promoting rhizobacteria (PGPR) in Persian walnut associated with drought stress tolerance

Lotfi

Soleimani

Çakmakçı

et al. 2022

Sci Rep

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There is a lack of information on the rhizosphere of nut-bearing trees where microbial populations can benefit roots and tree growth. The current research aimed at discovering plant growth-promoting rhizobacteria (PGPR) in the rhizosphere of soil samples from around the root zone of six walnut trees, each of which was considered as a genotype, i.e. ‘TT1’, ‘TT2’, ‘SS2’, ‘ZM1’, ‘Chandler’ and ‘Haward’. The trees grew in different arid and semiarid regions of Iran and Turkey. The strains were isolated and identified based on different morphological and biochemical markers. Drought-stress tolerance was assessed in the case of each isolate through their transfer to culture medium, containing polyethylene glycol (PEG6000) at 0 and 373.80 g L−1. Resilient strains were analyzed for measuring their ability to produce siderophore, hydrogen cyanide (HCN), Indole-3-acetic acid (IAA) and Gibberellic acid (GA3). In sum, 211 isolates were identified, of which a large number belonged to the Bacillus genus and, specifically, 78% of the strains were able to grow under drought stress conditions. The genus Arthrobacter was only detected in the rhizosphere of ‘ZM1’, ‘Haward’ and ‘TT1’ genotypes. In 4% of the strains, IAA production exceeded 53 mg L−1, while a high level of phosphorus solubility was verified in 6% of the strains. No strain was found to have the capability of producing HCN. The strains were screened for drought-tolerance, which resulted in the discovery of two promising strains, i.e. ZM39 and Cha43. Based on molecular identification through amplification and sequencing of the 16S rDNA gene, these two strains seemed to belong to Bacillus velezensis and Bacillus amyloliquefaciens, respectively. The discovery of new PGPR strains could probably assist walnut trees in improving their mechanisms of adaptation to drought stress.

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“…On the other hand, B. subtilis also exhibited antifungal activity against various foodborne pathogen such as P. digitatum. [13] reported that B. subtilis can inhibit the growth P. digitatum with 82.4 % inhibition zone when tested in in vivo dual culture tests by inhibiting the mycelial growth P. digitatum. However, despite showing promising antifungal activities against various fungal foodborne pathogens, the potency of P. flourescens and B. subtilis as antifungal for citrus postharvest pathogen have not yet reported.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial Activity of Pseudomonas fluorescens and Bacillus subtilis on Different Dilution Concentrations Against Various Citrus Post-Harvest Pathogens

Triasih¹,

Nugroho²,

Widyaningsih³

2021

Proceedings of the 3rd KOBI Congress, International and National Conferences (KOBICINC 2020)

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Pseudomonas flourescens and Bacillus subtilis are common antagonistic bacteria to various pathogens. These bacteria can produce various antimicrobial substances such as chitinase, siderophore, and antibiotic. This research aims to obtain the optimum dilution concentrations of Pseudomonas flourescens and Bacillus subtilis that can effectively inhibit the growth of Penicillium digitatum, P. paradoxum, and Aspergillus sp. This research was carried out in a complete randomized design with five different dilution concentrations of Pseudomonas flourescens and Bacillus subtilis ranging from 10 -1 to 10 -5 . The antimicrobial activity tests against fungal pathogens were carried out in triplicate using a dual culture method. P. flourescens and B. subtilis displayed strong antimicrobial activities against all target pathogens. The highest inhibition activity of P. flourescens and B. subtilis was recorded against Aspergillus sp. with 45.7 % and 35.92 % and cell density of 168 x 10 6 CFU/mL and 14 x 10 6 CFU/mL, respectively. The highest antimicrobial activity was recorded at the 10 -1 and 10 -4 for P. flourescens and B. subtilis, respectively. The antimicrobial activity of P.flourescens and B.subtilis against P. digitatum and P. paradoxum are ranging from 17.59 % to 27.73 %.

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Potential of some bacteria for biological control of postharvest citrus green mould caused by Penicillium digitatum

Cited by 61 publications

References 47 publications

Biological Control of Citrus Postharvest Phytopathogens

Biological Control of Citrus Postharvest Phytopathogens

Characterization of plant growth-promoting rhizobacteria (PGPR) in Persian walnut associated with drought stress tolerance

Antimicrobial Activity of Pseudomonas fluorescens and Bacillus subtilis on Different Dilution Concentrations Against Various Citrus Post-Harvest Pathogens

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