Bioherbicide production by Diaporthe sp. isolated from the Brazilian Pampa biome

Souza, Angélica Rossana Castro de; Baldoni, Daiana Bortoluzzi; Lima, Jessica; Porto, Vitória; Marcuz, Camila; Ferraz, Rafael Camargo; Kuhn, Raquel C.; Jacques, Rodrigo Josemar Seminoti; Guedes, Jerson Vanderlei Carús; Mazutti, Márcio A.

doi:10.1016/j.bcab.2015.09.005

Cited by 27 publications

(14 citation statements)

References 20 publications

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“…Several groups have recently isolated and identified Diaporthe species that have potential for use as microbial bioherbicides. [31][32][33] Bastos et al 34 have shown enhanced efficacy of herbicidal effect of the fermented broths of Diaporthe species by formulation with wileyonlinelibrary.com/journal/ps adjuvants. None of these studies have related the activity of these microbes to the production of specific phytotoxins.…”

Section: N-(tert-butyl)-2-chloro-6-(2-hydroxy-2-methylpropyl)-3-methyl-mentioning

confidence: 99%

Isolation of a phytotoxic isocoumarin from Diaporthe eres‐infected Hedera helix (English ivy) and synthesis of its phytotoxic analogs

Meepagala

Briscoe

Techen³

et al. 2017

Pest Management Science

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BACKGROUND: The fungus Diaporthe eres was isolated from a fungal pathogen-infected leaf of Hedera helix (English ivy) exhibiting necrosis. It is hypothesized that the causative fungus produces phytotoxins as evidenced by necrotic lesions on the leaves. RESULTS:The fungus was isolated and grown in Czapek Dox broth culture medium and potato dextrose broth culture medium and identified as Diaporthe eres. The ethyl acetate extracts of the culture broths were phytotoxic to lettuce (Lactuca sativa) and bentgrass (Agrostis stolonifera). 3,4-Dihydro-8-hydroxy-3,5-dimethylisocoumarin (1) and tyrosol (2) were isolated and identified as the phytotoxic constituents. Six analogs of 3,4-dihydro-isocoumarin were synthesized and shown to be phytotoxic. The synthesized 3,4-dihydro-8-hydroxy-3,7-dimethylisocoumarin and 3,4-dihydro-8-hydroxy-3,3,7-trimethylisocoumarin were two-to three-fold more phytotoxic than the naturally occurring 1 in a Lemna paucicostata growth bioassay.CONCLUSION: Synthesis and herbicidal activities of the several new analogs of 1 are reported for the first time. These promising molecules should be used as templates for synthesis and testing of more analogs.

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Section: N-(tert-butyl)-2-chloro-6-(2-hydroxy-2-methylpropyl)-3-methyl-mentioning

confidence: 99%

Isolation of a phytotoxic isocoumarin from Diaporthe eres‐infected Hedera helix (English ivy) and synthesis of its phytotoxic analogs

Meepagala

Briscoe

Techen³

et al. 2017

Pest Management Science

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“…Similar symptom was verified in previous studies of group referring to application of metabolites of Diaporthe sp. obtained by submerged fermentation (Souza et al 2015;Pes et al 2016). Chlorosis also was found by Varejão et al (2013) when evaluating the effects of fermented broth of Alternaria euphorbiicola in leaves of Euphorbia heterophylla.…”

Section: Resultsmentioning

confidence: 99%

“…For inoculum, two discs of 6 mm of fungal mycelium were transferred to a 250-mL Erlenmeyer flask contained 100 mL of medium composed (g L -1 ): glucose 10.0, peptone 7.5, yeast extract 2.0, NH 4 2SO 4 1.0, FeSO 4 Á7H 2 O 1.0, MnSO 4 ÁH 2 O 1.0 and MgSO 4 0.5. The flasks were maintained at 28°C, 120 rpm for 7 days (Innova 44R, New Brunswick) (Souza et al 2015).…”

Section: Microorganism and Inoculummentioning

confidence: 99%

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Solid-state fermentation for production of a bioherbicide from Diaporthe sp. and its formulation to enhance the efficacy

et al. 2017

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In this study, a bioherbicide was produced by solid-state fermentation (SSF) using Diaporthe sp. Adjuvants were employed in a formulation to enhance the herbicidal activity towards the target (Cucumis sativus). The study was divided into two steps: (1) the fermentation condition for bioherbicide production was assessed; (2) evaluation of different formulations containing palm oil, Tween Ò 80 and Span Ò 80, in order to increase phytotoxicity. In step 1, the maximum herbicidal activity (1.23% of the leaves had lesions) was obtained at 25°C, moisture content of 50 wt%, supplemented with 10 wt% of corn steep liquor and soybean bran and inoculum density of 15 wt%. In step 2, the formulation containing 8.2 wt% of palm oil, 8.2 wt% of Tween Ò 80 and Span Ò 80, resulting in an HLB of 12.8 showed the highest phytotoxicity on the leaves. At this condition, dry matter and height of target were reduced about 36% in comparison with control. Diaporthe sp. has the potential to produce molecules with herbicidal activity and the use of adjuvants enhanced three times its efficiency.

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“…genus was screened due to herbicidal effects of its secondary metabolites on target plants (Souza et al, 2016a). In a second study, the production of the bioherbicide in a bench-scale bioreactor with working volume of 3 L was assessed (Souza et al, 2015b). The bioherbicide efficiency rate reached 100% in pre-emergence, since there was no seed germination after its application.…”

Section: Introductionmentioning

confidence: 99%

Bioherbicide based on Diaporthe sp. secondary metabolites in the control of three tough weeds

Pes¹,

Mazutti²,

Almeida³

et al. 2016

Afr. J. Agric. Res.

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Brazilian growers are facing difficulties to manage the weeds Lolium multiflorum, Conyza sp. and Echinochloa sp. using commercially available agrochemicals in most crops. This study aims to evaluate the use of a bioherbicide based on fermented broth containing secondary metabolites of Diaporthe sp. to control L. multiflorum, Conyza sp. and Echinochloa sp. The bioherbicide activity in preemergence and post-emergence of these weed species and phytotoxicity on soybean, wheat and rice plants were evaluated. In the pre-emergence test using all weed species, the bioherbicide showed 100% control efficiency in comparison with the control group. Phytotoxic symptoms were observed on soybean leaves and horseweed was efficiently controlled using the bioherbicide.

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Bioherbicide production by Diaporthe sp. isolated from the Brazilian Pampa biome

Cited by 27 publications

References 20 publications

Isolation of a phytotoxic isocoumarin from Diaporthe eres‐infected Hedera helix (English ivy) and synthesis of its phytotoxic analogs

Isolation of a phytotoxic isocoumarin from Diaporthe eres‐infected Hedera helix (English ivy) and synthesis of its phytotoxic analogs

Solid-state fermentation for production of a bioherbicide from Diaporthe sp. and its formulation to enhance the efficacy

Bioherbicide based on Diaporthe sp. secondary metabolites in the control of three tough weeds

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