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Rye Bran Alkylresorcinols Inhibit Growth of Penicillium expansum and Neofabraea perennans In Vitro and In Vivo on Different Apple Cultivars

Tahir, I. I. ; Ahmadi-Afzadi, M. ; Nybom, H. and Dey, Estera LU (2014) In European Journal of Horticultural Science 79(4). p.218-225
Abstract
Apples (Malus domestica Borkh.) are highly susceptible to fungi causing rots, especially in organic orchards where these rots cause major economic losses. Since the use of conventional fungicides is prohibited or restricted in many countries and in organic production, altogether, one alternative is to make use of bioactive compounds that can inhibit fungal growth on apples. Antifungal effects of alkylresorcinols (ARs), isolated from rye bran, were used in two different bioactive emulsions and tested in vitro as well as in vivo against two fungi, Penicillium expansum and Neofabraea perennans, which cause important storage diseases in apple. For both fungi, application of AR emulsions produced a 50 % reduction in mycelial growth and spore... (More)
Apples (Malus domestica Borkh.) are highly susceptible to fungi causing rots, especially in organic orchards where these rots cause major economic losses. Since the use of conventional fungicides is prohibited or restricted in many countries and in organic production, altogether, one alternative is to make use of bioactive compounds that can inhibit fungal growth on apples. Antifungal effects of alkylresorcinols (ARs), isolated from rye bran, were used in two different bioactive emulsions and tested in vitro as well as in vivo against two fungi, Penicillium expansum and Neofabraea perennans, which cause important storage diseases in apple. For both fungi, application of AR emulsions produced a 50 % reduction in mycelial growth and spore germination. The in vivo tests were carried out on wound-inoculated fruit of four apple cultivars, 'Aroma', 'Ingrid Marie', Frida' and 'Gloster'. Spraying the inoculated fruit with ARs decreased lesion area diameter caused by P. expansum with 17-52 % and lesion area diameter caused by N. perennans with 31-77 %, depending on the apple cultivar. For each fungus, the inhibitory effect of ARs was stronger in those apple cultivars that appear to have the highest level of disease tolerance, i.e. the smallest lesions on the control fruit. The level of sun exposure of the fruit had neither significant influence on the decay nor in the inhibitory effect obtained with the postharvest application of ARs. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
blue mould, bull's eye rot, postharvest decay
in
European Journal of Horticultural Science
volume
79
issue
4
pages
218 - 225
publisher
International Society for Horticultural Science (ISHS)
external identifiers
  • wos:000342715900004
  • scopus:84905655063
ISSN
1611-4434
language
English
LU publication?
yes
id
5fa3a9dd-04d3-4fe3-aeb1-b565497a01d2 (old id 4803654)
date added to LUP
2016-04-01 09:55:28
date last changed
2022-03-27 03:09:55
@article{5fa3a9dd-04d3-4fe3-aeb1-b565497a01d2,
  abstract     = {{Apples (Malus domestica Borkh.) are highly susceptible to fungi causing rots, especially in organic orchards where these rots cause major economic losses. Since the use of conventional fungicides is prohibited or restricted in many countries and in organic production, altogether, one alternative is to make use of bioactive compounds that can inhibit fungal growth on apples. Antifungal effects of alkylresorcinols (ARs), isolated from rye bran, were used in two different bioactive emulsions and tested in vitro as well as in vivo against two fungi, Penicillium expansum and Neofabraea perennans, which cause important storage diseases in apple. For both fungi, application of AR emulsions produced a 50 % reduction in mycelial growth and spore germination. The in vivo tests were carried out on wound-inoculated fruit of four apple cultivars, 'Aroma', 'Ingrid Marie', Frida' and 'Gloster'. Spraying the inoculated fruit with ARs decreased lesion area diameter caused by P. expansum with 17-52 % and lesion area diameter caused by N. perennans with 31-77 %, depending on the apple cultivar. For each fungus, the inhibitory effect of ARs was stronger in those apple cultivars that appear to have the highest level of disease tolerance, i.e. the smallest lesions on the control fruit. The level of sun exposure of the fruit had neither significant influence on the decay nor in the inhibitory effect obtained with the postharvest application of ARs.}},
  author       = {{Tahir, I. I. and Ahmadi-Afzadi, M. and Nybom, H. and Dey, Estera}},
  issn         = {{1611-4434}},
  keywords     = {{blue mould; bull's eye rot; postharvest decay}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{218--225}},
  publisher    = {{International Society for Horticultural Science (ISHS)}},
  series       = {{European Journal of Horticultural Science}},
  title        = {{Rye Bran Alkylresorcinols Inhibit Growth of Penicillium expansum and Neofabraea perennans In Vitro and In Vivo on Different Apple Cultivars}},
  volume       = {{79}},
  year         = {{2014}},
}