Heat-resistant microfungi can survive 30 minutes of heat at 75°C and can
continue to develop and deteriorate products during storage in the room
conditions. The most important role in this heat resistance is based on the
ability to form sexual reproduction structures called ascospores, and
ascospores heat resistance depends on species, strain, pH, heating medium and
other growth. Byssochlamys fulva
(current name; Paecilomyces fulvus)
is the first heat-resistant microfungus recorded, and in addition to B. nivea (current name; Byssochlamys lagunculariae), Neosartorya fischeri (current name; Aspergillus fischeri), Talaromyces macrosporus, T. bacillisporus
and Eupenicillium brefeldianum
(current; Penicillium dodgei) are the
most common heat resistant microfungi. We investigated biodiversity of heat
resistant microfungi in agricultural soils of Eskisehir Province in our study.
For this purpose, four different soil samples were collected from fallow lands
in east, west, north and south locations of Eskisehir Province at September
2017. Isolation process was performed by using heat treatment of soil samples
and the soil dilution method. After purification step, isolates were diagnosed
by using conventional methods and multi locus gene sequencing. We determined
total of 3.22x103 cfu/g colonies appertain to heat resistant
microfungi and 49 isolates belong to Aspergillus,
Byssochlamys, Penicillium
and Talaromyces genera.
As a result, we determined that the agricultural soils have high heat
resistance microfungal biodiversity that commonly known as mycotoxigenic,
pathogenic and saprophytic.
TUBİTAK, Anadolu University/Eskisehir Technical University Council of Research Project Fund
Project Number is 118Z359, Project Number is 1704F102
This research was supported by grants from Anadolu University/Eskisehir Technical University Council of Research Project Fund (Project Number is 1704F102) and The Scientific and Technological Research Council of Turkey-TUBITAK (Project Number is 118Z359).
Isıya dayanıklı mikro
mantarlar 75°C'de 30 dakika ısıya dayanabilir ve oda koşullarında depolama
sırasında ürünlerde gelişmeye ve bunlarda bozulmaya devam edebilir. Bu ısı
direncindeki en önemli rol, askospor adı verilen eşeyli üreme yapıları
oluşturma yeteneğine dayanmaktadır ve askosporların ısı direnci; türlere,
strainlere, pH, ısıtma ortamı ve diğer büyüme koşullarına bağlıdır. Byssochlamys fulva (geçerli isim; Paecilomyces fulvus), ilk kaydedilen
ısıya dayanıklı mikrofungusdur ve buna ilave olarak B. nivea (geçerli isim; B.
lagunculariae), Neosartorya fischeri (geçerli isim; Aspergillus fischeri), Talaromyces macrosporus, T. bacillisporus ve Eupenicillium brefeldianum (geçerli
isim; P. dodgei) en yaygın ısıya
dayanıklı mikrofunguslardır. Çalışmamızda, Eskişehir ilinin tarım
topraklarındaki ısıya dayanıklı mikrofungusların biyoçeşitliliği araştırıldı.
Bu amaçla, Eylül 2017'de Eskişehir ilinin doğu, batı, kuzey ve güney
bölgelerindeki nadas alanlarından dört farklı toprak örneği toplanmıştır.
Toprak örneklerinden ısıl işlemi ve toprak seyreltme yöntemi kullanılarak
izolasyon işlemi yapılmıştır. Saflaştırma aşamasından sonra, geleneksel
yöntemler ve çoklu lokus gen dizilimi kullanılarak izolatlar teşhis edilmiştir.
Aspergillus, Byssochlamys, Penicillium ve Talaromyces
cinslerine ait 49 izolat ve ısıya dirençli mikrofunguslara ait toplam 3.22x103
cfu/g koloni tespit edilmiştir. Sonuç olarak, tarımsal toprakların,
mikotoksijenik, patojenik ve saprofitik olarak bilinen yüksek ısıya dirençli
mikrofungal biyolojik çeşitliliğe sahip olduğunu belirlenmiştir.
Project Number is 118Z359, Project Number is 1704F102
Primary Language | English |
---|---|
Journal Section | 2nd International Eurasian Mycology Congress (EMC’ 19) |
Authors | |
Project Number | Project Number is 118Z359, Project Number is 1704F102 |
Publication Date | December 26, 2019 |
Published in Issue | Year 2019 Volume: 10 Issue: 3 |
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