Nova Biologica Reperta

Isolation and identification of cutinase enzyme producing bacteria

Authors

Nasrin Parvaresh
Mojtaba Mortazavi
Masoud Torkzadeh-Mahani

Graduate University of Advanced Technology, Kerman

https://doi.org/10.21859/acadpub.nbr.4.1.39
Abstract
Cutinase belongs to the family of serine hydrolases which are capable of hydrolysis of esters and small polyester such as cutin. The cutin of plants is composed of hydroxy and epoxy fatty acids and is substantially imperm-eable to water and only the plant pathogenic bacteria are capable of degrading it. Initially, in order to identify the extent of cutin in cucumber (Cucumis sativus' C. sativus'), golden apples (Golden Delicious apple 'Malus domestica'), red ap-ples (Red Delicious apple 'Malus domestica'') and tomatoes (Solanum lycopersicum Mill. Commun ' S. lycopersicum'), their fruits were obtained. Cutin was extracted from the fruit skin of each studied specimen and compared by chloro-form-methanol method. Then, isolation of enzyme-producing strains was performed by the use of the specific medium containing cutin and enzyme activity assay. DNA of the specimens was extracted, and PCR were performed with univ-ersal primers for 16s DNA. The remainder was devoted to bioinformatic analysis, identification and registration of samples in the gene bank. The results showed that the percentage of extracted cutin in red apple was more than other samples and as a result, red apple are expected to be more resistant against diseases and pests. Also, six cutinase-prod-ucer strains of Klebsiella and Enterobacter were isolated with the help of enzyme activity and special culture medium containing cutin, and their 16s DNA region coding sequences were recorded in the GenBank.

Keywords

cutin
activity assay
bioinformatics
PNPB
16s DNA
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  • Receive Date 08 June 2026
  • Publish Date 08 June 2026

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