Volatiles produced by Streptomyces spp. delay rot in apples caused by Colletotrichum acutatum
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Volatiles produced by Streptomyces spp. delay rot in apples caused by Colletotrichum acutatum. / Jepsen, Thea; Jensen, Birgit; Jørgensen, Niels O. G.
I: Current Research in Microbial Sciences, Bind 3, 100121, 2022.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Volatiles produced by Streptomyces spp. delay rot in apples caused by Colletotrichum acutatum
AU - Jepsen, Thea
AU - Jensen, Birgit
AU - Jørgensen, Niels O. G.
PY - 2022
Y1 - 2022
N2 - Volatile organic compounds (VOCs) produced by microorganisms may prevent postharvest rot in fruits. Here, it was examined if VOCs from different species of Streptomyces can control infection in apples caused by the fungal pathogen Colletotrichum acutatum. Incubation of C. acutatum-infected apples in semi-closed boxes with actively growing strains of three Streptomyces (S. coelicolor, S. diastatochromogenes and Streptomyces strain 2R) showed that VOCs reduced rot areas of the apples by 45-66% after 8 days and 39-57% after 10 days, relative to infected apples incubated without Streptomyces. No differences in inhibition among the three strains were seen. In contrast, a mutant strain of Streptomyces that lacks major genes involved in biosynthesis of secondary metabolites, did not reduce development of rot in the apples. Furthermore, Streptomyces VOCs reduced radial hyphal growth of C. acutatum on agar. Several of the VOCs produced by three Streptomyces strains have previously shown fungicidal properties. Although the specific VOCs being active in inhibition of C. acutatum remain to be determined, VOCs may have a great potential as biofumigants to minimize postharvest diseases in fruits.
AB - Volatile organic compounds (VOCs) produced by microorganisms may prevent postharvest rot in fruits. Here, it was examined if VOCs from different species of Streptomyces can control infection in apples caused by the fungal pathogen Colletotrichum acutatum. Incubation of C. acutatum-infected apples in semi-closed boxes with actively growing strains of three Streptomyces (S. coelicolor, S. diastatochromogenes and Streptomyces strain 2R) showed that VOCs reduced rot areas of the apples by 45-66% after 8 days and 39-57% after 10 days, relative to infected apples incubated without Streptomyces. No differences in inhibition among the three strains were seen. In contrast, a mutant strain of Streptomyces that lacks major genes involved in biosynthesis of secondary metabolites, did not reduce development of rot in the apples. Furthermore, Streptomyces VOCs reduced radial hyphal growth of C. acutatum on agar. Several of the VOCs produced by three Streptomyces strains have previously shown fungicidal properties. Although the specific VOCs being active in inhibition of C. acutatum remain to be determined, VOCs may have a great potential as biofumigants to minimize postharvest diseases in fruits.
U2 - 10.1016/j.crmicr.2022.100121
DO - 10.1016/j.crmicr.2022.100121
M3 - Journal article
C2 - 35909604
VL - 3
JO - Current Research in Microbial Sciences
JF - Current Research in Microbial Sciences
SN - 2666-5174
M1 - 100121
ER -
ID: 301816177