Effect of analogues of plant growth regulators on <i>in vitro</i> growth of eukaryotic plant pathogens

Flors, Vı́ctor; Miralles, M. C.; Varas, Elena; González-Bosch, Carmen; García‐Agustín, Pilar

doi:10.1111/j.1365-3059.2004.00942.x

Cited by 12 publications

(8 citation statements)

References 32 publications

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“…Control of plant diseases still relies mainly on the use of synthetic fungicides, but growing concerns over the potential impact of them on human health and the environment have stimulated the search for alternative control strategies . Therefore, for these reasons, as well as the danger of development of fungicide‐resistant pests, research for compounds that could be a substitute for or reduce the input of chemicals in agriculture is required.…”

Section: Introductionmentioning

confidence: 99%

Bioassimilable sulphur provides effective control of Oidium neolycopersici in tomato, enhancing the plant immune system

Llorens

Agustí-Brisach²,

González-Hernández

et al. 2016

Pest Management Science

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The results indicate that preventive and curative treatments can be highly effective for the prevention and control of powdery mildew in tomato plants. Foliar treatments are able to stop the pathogen development when they are applied as curative. Soil drench treatments induce immune response mechanisms of plants, increasing significantly callose deposition and promoting plant development. © 2016 Society of Chemical Industry.

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Section: Introductionmentioning

confidence: 99%

Bioassimilable sulphur provides effective control of Oidium neolycopersici in tomato, enhancing the plant immune system

Llorens

Agustí-Brisach²,

González-Hernández

et al. 2016

Pest Management Science

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“…The use of low‐toxicity chemicals constitutes an interesting alternative for pre‐ and postharvest controls of several diseases which cause huge losses in fruits and vegetables (Osbourn, 1996). Previous reports demonstrated the effective control of the phytopathogen B. cinerea by adipic acid monoethyl ester (AAME) (Flors et al ., 2004; Vicedo et al ., 2006). AAME, a derivative of adipic acid, completely suppressed spore germination and mycelium development in vitro, as well as on a host.…”

Section: Introductionmentioning

confidence: 99%

Preventive and post‐infection control of Botrytis cinerea in tomato plants by hexanoic acid

et al. 2008

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The antifungal activity of hexanoic acid on the phytopathogen Botrytis cinerea was studied. This chemical inhibited both spore germination and mycelial growth in vitro in a concentration-and pH-dependent manner, and stopped spore germination at a very early stage, preventing germ-tube development. The minimum fungicidal concentration (MFC) for in vitro spore germination was 16 m m . Hexanoic acid also inhibited in vitro mycelial growth of germinated spores at an MFC of 12 m m . Studies performed to characterize the mechanisms underlying the antimicrobial effect of hexanoic acid showed that it alters fungal membrane permeability. In addition, hexanoic acid treatment increased the levels of spermine, spermidine, putrescine and cadaverine in B. cinerea mycelia. Spray application of hexanoic acid at fungicidal concentrations on 4-week-old tomato plants prior to fungal inoculation reduced necrosis diameter by approximately 60%. Application of the same hexanoic acid concentrations on previously infected plants reduced further necrosis expansion by around 30%. The results suggest that this chemical acts as a preventive and curative fungicide. Interestingly, treatments with hexanoic acid at concentrations below the MFC in hydroponic solution prior to fungal inoculation significantly reduced necrosis area. These results suggest an inducer effect of plant responses for hexanoic acid treatments at these concentrations. Hexanoic acid is a good candidate for safe antifungal treatments for the control of B. cinerea , which is responsible for many economic losses on fruits, vegetables and flowers.

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“…The most significant component detected that correspond to antifungal effect was hexanedioic acid or generally known as adipic acid (Figure 4). Adipic acid has been reported to be capable of inhibiting in vitro mycelial growth and conidial germination (Flors et al, 2004). Another study conducted by Vicedo et al (2006), reported that adipic acid effectively controlled phytopathogen Botrytis cinerea by preventing germ tube development which stop the spore germination process.…”

Section: Resultsmentioning

confidence: 99%

In vitro antagonism of Phytophthora capsici and Fusarium solani by bacterial isolates from Sarawak

Farith¹,

Husaini²,

Lihan³

et al. 2015

MJM

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Aims: Phytophthora capsici and Fusarium solani are common fungal pathogens causing severe diseases that lead to economic loss in pepper industry, especially in Sarawak. In response to the infections, chemical approach is more common; nevertheless, biological control is more favorable to control fungal pathogens. Biological control approach greatly reduces the problems associated with chemical applications and it restores balance of the natural environment. Here we present the ongoing work to study the action of antagonistic bacteria, Bacillus sp. and Pseudomonas sp., that produce volatile and non-volatile antifungal compounds against P. capsici and F. solani on pepper plants. Methodology and results: A total of seven bacterial candidates were isolated from different locations and tested for their antagonistic properties against P. capsici and F. solani in a dual culture assay and extracellular metabolite test. Extracellular hydrolytic enzymes production was also monitored and followed by genotypic indentification. Preliminary antagonism tests indicated that bacterial isolate Pep3 and Pep4 inhibit up to 50% of the growth of P. capsici and F. solani as compared to the control. Subsequent investigation on extracellular hydrolytic enzyme production revealed that both bacterial isolates are capable of secreting hydrolytic enzymes. Microscopic and genotypic analyses identified the bacterial isolates Pep3 as Bacillus amyloliquefaciens (KJ461444) and Pep4 as Pseudomonas pachastrellae (KM460937). Conclusion, significance and impact of study: B. Amyloliquefaciens (KJ461444) and P. pachastrellae (KM460937) inhibited the growth of P. capsici and F. solani thus reflecting the potential of the produced metabolites to be purified and used in combating plant pathogenic fungi.

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Effect of analogues of plant growth regulators on in vitro growth of eukaryotic plant pathogens

Cited by 12 publications

References 32 publications

Bioassimilable sulphur provides effective control of Oidium neolycopersici in tomato, enhancing the plant immune system

Bioassimilable sulphur provides effective control of Oidium neolycopersici in tomato, enhancing the plant immune system

Preventive and post‐infection control of Botrytis cinerea in tomato plants by hexanoic acid

In vitro antagonism of Phytophthora capsici and Fusarium solani by bacterial isolates from Sarawak

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