Cryptococcus laurentii aplicado em pós-colheita reduz podridões em maçãs

Blum, Luiz Eduardo Bassay; Amarante, Cassandro Vidal Talamini do; Valdebenito‐Sanhueza, Rosa Maria; Guimarães, Letícia Simone; Dezanet, Alexandre; Neto, Pedro Hack

doi:10.1590/s0100-41582004000400013

Cited by 16 publications

(5 citation statements)

References 4 publications

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“…Especially in postharvest, these diseases can cause significant economic losses: it is estimated that, in developed countries, 25% of fruit can be affected by such pathogens; and that, in developing countries, the percentage doubles [7], accounting for 80% of postharvest losses [8]. Chile, which is the most important table grape exporting country globally [9], these diseases can cause severe difficulties, especially when reaching the Far East destination market.…”

Section: Introductionmentioning

confidence: 99%

Volatile Organic Compounds (VOCs) Produced by Gluconobacter cerinus and Hanseniaspora osmophila Displaying Control Effect against Table Grape-Rot Pathogens

et al. 2021

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Table grapes (Vitis vinifera) are affected by botrytis bunch rot and summer bunch rot, the latter a complex disease caused by Botrytis cinerea, Aspergillus spp., Penicillium expansum and Rhizopus stolonifer. To search for biocontrol alternatives, a new bioproduct composed of Gluconobacter cerinus and Hanseniaspora osmophila, a consortium called PUCV-VBL, was developed for the control of fungal rots in table grapes. Since this consortium presents new biocontrol species, the effect of their VOCs (volatile organic compounds) was evaluated under in vitro and in vivo conditions. The VOCs produced by the PUCV-VBL consortium showed the highest mycelial inhibition against Botrytis cinerea (86%). Furthermore, H. osmophila was able to inhibit sporulation of A. tubingensis and P. expansum. VOCs’ effect in vivo was evaluated using berries from Red Globe, Thompson Seedless and Crimson Seedless grapes cultivars, demonstrating a mycelial inhibition by VOCs greater than 70% for all evaluated fungal species. The VOC identification of the PUCV-VBL consortium was analyzed by solid-phase microextraction coupled to gas chromatography-mass spectrometry (SPME-GCMS). A total 26 compounds were identified, including 1-butanol 3-methyl, propanoic acid ethyl ester, ethyl acetate, phenylethyl alcohol, isobutyl acetate and hexanoic acid ethyl ester. Our results show that VOCs are an important mode of action of the PUCV-VBL biological consortium.

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Section: Introductionmentioning

confidence: 99%

Volatile Organic Compounds (VOCs) Produced by Gluconobacter cerinus and Hanseniaspora osmophila Displaying Control Effect against Table Grape-Rot Pathogens

et al. 2021

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“…Como exemplo, pode ser mencionado Blum et al (2004) que ao realizarem testes em laboratório utilizando a levedura Cryptococcus laurentii em pós-colheita, obteveram uma redução das podridões (Glomerella cingulata, Penicillium expansum e Pezicula malicorticis) da maçã tanto quanto os fungicidas testados (thiabendazol e iprodione). De acordo com Sanhueza (1998), é preferível utilizar leveduras na proteção de frutos que serão consumidos in natura, pois esses microrganismos não são, geralmente, produtores de antibióticos, elementos considerados contaminantes químicos, tal como ocorre com Bacillus spp.…”

Section: Resultsunclassified

Uso de antagonistas e produtos alternativos no manejo pós-colheita de podridão mole em pimentão

Silva¹,

Carvalho²,

Silva³

et al. 2014

Rev. Ciênc. Agron.

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-For the control of soft rot caused by Pectobacterium carotovorum subsp. carotovorum (Pcc) in chili, 10 treatments were evaluated: Bacillus spp.: isolated C116 (B. pumilus); Yeasts: isolated Lma (Rhodotorula aurantiaca) and Lms (R. glutinis); Potassium phosphite and calcium, calcium sources: CaCl2, Ca (CO3) 2 and Ca (SO4) 2; fungicidal/bactericidal organic Antica ®; Kasumin ® antibiotic. After determining the concentration of the antagonist and alternative products by antibiogram testing, testing was performed in vivo by pathogen inoculation, six hours after treatment with antagonists and alternative products. We determined the Incubation Period (PI), severity of illness (SEV), reduction of disease severity (RSD%) and area under the disease progress curve (AUDPC). All treatments showed higher PI and RSD% and lower values of SEV and AUDPC compared to the control. Calcium phosphite, C116, Lms, Lma and potassium phosphite were significantly higher when compared to other treatments. Pcc was resistant Kasumin ®, possessing SEV and AUDPC did not differ significantly from control.

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“…C. albidus was also evaluated for lipid accumulation using volatile fatty acids as carbon source (Fei et al , 2011). However, C. laurentti has not been widely investigated for production of lipids and has been, on the other hand, mainly tested as a postharvest biocontrol agent (Blum et al , 2004). …”

Section: Introductionmentioning

confidence: 99%

Optimization of lipids production by Cryptococcus laurentii 11 using cheese whey with molasses

Castanha¹,

Mariano²,

Morais³

et al. 2014

Braz. J. Microbiol.

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This study aimed the optimization of culture condition and composition for production of Cryptococcus laurentii 11 biomass and lipids in cheese whey medium supplemented with sugarcane molasses. The optimization of pH, fermentation time, and molasses concentration according to a full factorial statistical experimental design was followed by a Plackett-Burman experimental design, which was used to determine whether the supplementation of the culture medium by yeast extract and inorganic salts could provide a further enhancement of lipids production. The following conditions and composition of the culture medium were found to optimize biomass and lipids production: 360 h fermentation, 6.5 pH and supplementation of (g L−1): 50 molasses, 0.5 yeast extract, 4 KH2PO4, 1 Na2HPO4, 0.75 MgSO4·7H2O and 0.002 ZnSO4·H2O. Additional supplementation with inorganic salts and yeast extract was essential to optimize the production, in terms of product concentration and productivity, of neutral lipids by C. laurentii 11. Under this optimized condition, the production of total lipids increased by 133% in relation to control experiment (from 1.27 to 2.96 g L−1). The total lipids indicated a predominant (86%) presence of neutral lipids with high content of 16- and 18-carbon-chain saturated and monosaturated fatty acids. This class of lipids is considered especially suitable for the production of biodiesel.

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Cryptococcus laurentii aplicado em pós-colheita reduz podridões em maçãs

Cited by 16 publications

References 4 publications

Volatile Organic Compounds (VOCs) Produced by Gluconobacter cerinus and Hanseniaspora osmophila Displaying Control Effect against Table Grape-Rot Pathogens

Volatile Organic Compounds (VOCs) Produced by Gluconobacter cerinus and Hanseniaspora osmophila Displaying Control Effect against Table Grape-Rot Pathogens

Uso de antagonistas e produtos alternativos no manejo pós-colheita de podridão mole em pimentão

Optimization of lipids production by Cryptococcus laurentii 11 using cheese whey with molasses

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