Enhancing bioefficacy of Bacillus amyloliquefaciens SF14 with salicylic acid for the control of the postharvest citrus green mould

Hamss, Hajar El; Kajad, Nada; Belabess, Zineb; Lahlali, Rachid

doi:10.1016/j.stress.2023.100144

Cited by 10 publications

(9 citation statements)

References 72 publications

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“…In support of this work, Arrebola et al (2010) revealed that combining B. amyloliquefaciens PPCB004 and thyme or lemon grass oil with strong antifungal activity inhibited postharvest pathogens of peach, including B. cinerea , P. expansum , and R. stolonifera , compared to single applications. In another instance, El Hamss et al (2023) reported that the bioefficacy of B. amyloliquefaciens SF14 was enhanced in combination with salicylic acid to suppress green mold of citrus and the treatments were safe to the quality of fruit. Similarly, Zhou et al (2014) reported that Pichia membranaefaciens and salicylic acid were more effective in combination to suppress green mold decay of citrus fruit and did not impair the postharvest quality of fruit.…”

Section: Discussionmentioning

confidence: 99%

Endophytic Bacillus atrophaeus CHGP13 and salicylic acid inhibit blue mold of lemon by regulating defense enzymes

et al. 2023

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Lemons (Citrus limon L.) are one of the most economically important and consumed fruit worldwide. The species is vulnerable to several postharvest decay pathogens, of which Penicillium italicum associated with blue mold disease is the most damaging. This study investigates the use of integrated management for blue mold of lemon using lipopeptides (LPs) extracted from endophytic Bacillus strains and resistance inducers. Two resistance inducers; salicylic acid (SA) and benzoic acid (BA) were tested at 2, 3, 4, and 5 mM concentrations against the development of blue mold on lemon fruit. The 5 mM SA treatment produced the lowest disease incidence (60%) and lesion diameter (1.4 cm) of blue mold on lemon fruit relative to the control. In an in vitro antagonism assay eighteen Bacillus strains were evaluated for their direct antifungal effect against P. italicum; CHGP13 and CHGP17 had the greatest inhibition zones of 2.30 and 2.14 cm. Lipopeptides (LPs) extracted from CHGP13 and CHGP17 also inhibited the colony growth of P. italicum. LPs extracted from CHGP13 and 5 mM SA were tested as single and combined treatments against disease incidence and lesion diameter of blue mold on lemon fruit. SA + CHGP13 + PI had the lowest disease incidence (30%) and lesion diameter (0.4 cm) of P. italicum on lemon fruit relative to the other treatments. Furthermore, the lemon fruit treated with SA + CHGP13 + PI had the highest PPO, POD, and PAL activities. The postharvest quality analysis of the lemon fruit including fruit firmness, total soluble solids, weight loss, titratable acidity, and ascorbic acid content revealed that the treatment SA + CHGP13 + PI had little effect on fruit quality compared to the healthy control. These findings indicate that Bacillus strains and resistance inducers can be used as components of integrated disease management for the blue mold of lemon.

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Section: Discussionmentioning

confidence: 99%

Endophytic Bacillus atrophaeus CHGP13 and salicylic acid inhibit blue mold of lemon by regulating defense enzymes

et al. 2023

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“…The weight of each fruit was recorded before pathogen inoculation and at D14 postincubation. Eqn (2) was used for the calculation 17 :

\begin{matrix} lefttrue \\ Weight loss referenced to initial weight (%) \\ = \frac{initial weight - final weight}{italicinitial weight} * 10 \end{matrix}

…”

Section: Methodsmentioning

confidence: 99%

“…The weight of each fruit was recorded before pathogen inoculation and at D14 postincubation. Eqn (2) was used for the calculation 17 :…”

Section: Determination Of Fruit Weight Lossmentioning

confidence: 99%

Levulinic acid as a strategy for control of postharvest citrus blue mold by a newly isolated Penicillium italicum

Bazoti,

Camargo,

Bonatto

et al. 2024

J of Chemical Tech & Biotech

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BACKGROUNDLevulinic acid (LA) is a multifunctional compound that is relevant to the economy of bio‐based chemical products. Citrus sinensis, the Valencia variety, is one of the world's most consumed citrus fruit varieties but suffers significant losses due to blue mold infestation. This research evaluated the inhibitory action of unpurified levulinic acid obtained from watermelon residues against the fungus Penicillium italicum, proposing a new use as a fungal inhibitor.RESULTSLA was evaluated in in vitro tests and inhibited the mycelial growth of the fungus. In in vivo experiments with oranges, fungal proliferation in fruits was investigated by applying a crude mixture containing LA (43 mM) and formic acid (FA, 28 mM), comparing with FA alone and negative control (without inhibitory agent). The weight loss and disease incidence results decreased when LA was used as an inhibitory agent, with no negative impacts on fruit quality being observed. Its inhibitory effect was confirmed by determining the activities of the antioxidant enzymes catalase (CAT), ascorbate peroxidase (APX), superoxide dismutase (SOD), and peroxidase (POD), where there was no increase in activities due to inhibition of the fungus before its proliferation in the fruits.CONCLUSIONThis study provides relevant data on the new use of raw LA as an antifungal agent, an effect still unexplored for this compound in recent literature, offering a practical and innovative solution to combat blue mold.This article is protected by copyright. All rights reserved.

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“…The concentration of organic acids can affect their effectiveness in promoting synergistic effects with beneficial bacteria. A salicylic acid concentration of 0.5%, exogenous co-application with beneficial bacteria Bacillus amyloliquefaciens , had the highest effect on the biocontrolling pathogen Penicillium digitatum in citrus [ 82 ].…”

Section: Synergistic Effects Of Organic Compounds and Beneficial Bact...mentioning

confidence: 99%

Holistic Approaches to Plant Stress Alleviation: A Comprehensive Review of the Role of Organic Compounds and Beneficial Bacteria in Promoting Growth and Health

Hathurusinghe,

Azizoglu,

Shin

2024

Plants

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Plants select microorganisms from the surrounding bulk soil, which act as a reservoir of microbial diversity and enrich a rhizosphere microbiome that helps in growth and stress alleviation. Plants use organic compounds that are released through root exudates to shape the rhizosphere microbiome. These organic compounds are of various spectrums and technically gear the interplay between plants and the microbial world. Although plants naturally produce organic compounds that influence the microbial world, numerous efforts have been made to boost the efficiency of the microbiome through the addition of organic compounds. Despite further crucial investigations, synergistic effects from organic compounds and beneficial bacteria combinations have been reported. In this review, we examine the relationship between organic compounds and beneficial bacteria in determining plant growth and biotic and abiotic stress alleviation. We investigate the molecular mechanism and biochemical responses of bacteria to organic compounds, and we discuss the plant growth modifications and stress alleviation done with the help of beneficial bacteria. We then exhibit the synergistic effects of both components to highlight future research directions to dwell on how microbial engineering and metagenomic approaches could be utilized to enhance the use of beneficial microbes and organic compounds.

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Enhancing bioefficacy of Bacillus amyloliquefaciens SF14 with salicylic acid for the control of the postharvest citrus green mould

Cited by 10 publications

References 72 publications

Endophytic Bacillus atrophaeus CHGP13 and salicylic acid inhibit blue mold of lemon by regulating defense enzymes

Endophytic Bacillus atrophaeus CHGP13 and salicylic acid inhibit blue mold of lemon by regulating defense enzymes

Levulinic acid as a strategy for control of postharvest citrus blue mold by a newly isolated Penicillium italicum

Holistic Approaches to Plant Stress Alleviation: A Comprehensive Review of the Role of Organic Compounds and Beneficial Bacteria in Promoting Growth and Health

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