Synergistic effect of <i>Pseudomonas azotoformans</i> and <i>Trichoderma gamsii</i> in management of Fusarium crown rot of wheat

Makhlouf, Kamel E.; Boungab, Karima; Mokrani, Slimane

doi:10.1080/03235408.2023.2178056

Cited by 2 publications

(2 citation statements)

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“…Our previous study elucidated that Pseudomonas plecoglocessidea revealed a remarkable fungal growth inhibition rate in dual culture assay by 56.03% and 72.93% against F. pseudograminearum and F. graminearum , respectively. However, the results of the double plate assay indicated that this strain is less potent, with an inhibition rate falling below 13% (Makhlouf et al., 2023). This demonstrates the ability of this rhizobacterium to target and suppress pathogens directly, but also with limited efficacy of its volatile compounds.…”

Section: Discussionmentioning

confidence: 99%

“…It is a widespread issue in arid and semi‐arid wheat‐growing regions around the world (Kazan & Gardiner, 2018; Xu et al., 2008). These pathogens infect the root and crown of wheat, leading to seedling blight, brown discoloration of lower stems and whiteheads during the filling stage (Makhlouf et al., 2023). Moreover, the contamination of wheat stubble grains by these pathogens can result in harmful mycotoxins such as deoxynivalenol and trichothecenes nivalenol, posing risks to human and animal health (Chtioui et al., 2022; Muthomi et al., 2002; Touati‐Hattab et al., 2016).…”

Section: Introductionmentioning

confidence: 99%

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Pseudomonas plecoglossicida (NR_114226) as a novel biocontrol agent against Fusarium crown rot of wheat

Makhlouf,

Karima,

Slimane

2024

Journal of Phytopathology

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Fusarium crown rot (FCR) poses a significant threat to wheat crops, causing substantial grain loss and mycotoxin contamination. While chemical fungicides have been effective in controlling this disease, the need for environmentally friendly alternatives is paramount due to concerns about human health and fungicide resistance. This study delves into the efficacy of Pseudomonas plecoglossicida (NR_114226) as a plant growth‐promoting and biocontrol agent against Fusarium graminearum (ON685926) and Fusarium pseudograminearum (ON687723). Greenhouse experiments demonstrated a significant reduction in disease severity by 66.06% through seed treatment with this rhizobacterial strain in soil already infested with fungal pathogens. Moreover, significant growth enhancement occurred in F. pseudograminearum‐infected seedlings treated with P. plecoglossicida (F4 + P57), increasing plant height from 13.8 to 33.1 cm and root length from 9.56 to 19.62 cm, with notable improvements in fresh and dry weights. The study further validated these findings through enzymatic assays and analysis of synthesized secondary metabolites, including chitinase, protease, hydrocyanic acid, indole acetic acid, phosphate solubilization and siderophore production. These results strongly suggest that P. plecoglossicida has the potential to serve as an effective biocontrol agent against soilborne cereal pathogens.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pseudomonas plecoglossicida (NR_114226) as a novel biocontrol agent against Fusarium crown rot of wheat

Makhlouf,

Karima,

Slimane

2024

Journal of Phytopathology

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Understanding the mechanisms underlying biological control of Fusarium diseases in cereals

Petrucci,

Khairullina,

Sarrocco

et al. 2023

Eur J Plant Pathol

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Many Fusarium species cause serious diseases for cereal cultivation. These include Fusarium head blight and crown rot on wheat and bakanae disease on rice. These represent a major concern both in terms of food security and food safety. The latter is connected with the risk of mycotoxin contamination of grains. Biological control has proven its potential for controlling head blight and crown rot diseases of cereals caused by Fusarium species in a number of studies, and indeed several commercial products are under development. We review current knowledge of the mechanisms underlying biological control with a focus on fungal biocontrol agents, and also include challenges related to co-occurrence of Fusarium species. Several of the established biological control mechanisms (antibiosis, competition, hyperparasitism and induced resistance) can act simultaneously, thus resulting in disease control and, consequently, reduction of mycotoxin contamination. We also review the biological roles of some of the many mycotoxins produced by Fusarium species, and the mechanisms by which they are detoxified by cereal enzymes or by other fungi and how biological control agents (BCAs) can stimulate their degradation. Finally, the effect of biocontrol agents on the resident microbiota, as well as the effect of the resident microbiota on the performances of BCAs, are discussed. New perspectives on the use of biocontrol agents for the management of Fusarium diseases on cereals.

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Synergistic effect of Pseudomonas azotoformans and Trichoderma gamsii in management of Fusarium crown rot of wheat

Cited by 2 publications

References 37 publications

Pseudomonas plecoglossicida (NR_114226) as a novel biocontrol agent against Fusarium crown rot of wheat

Pseudomonas plecoglossicida (NR_114226) as a novel biocontrol agent against Fusarium crown rot of wheat

Understanding the mechanisms underlying biological control of Fusarium diseases in cereals

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