Genetic Identification of the Wild Form of Olive (<i>Olea europaea var. sylvestris</i>) Using Allele-Specific Real-Time PCR

The wild-type of olive tree, <i>Olea europaea var Sylvestris</i> or oleaster, is the ancestor of the cultivated olive tree. Wild-type olive oil is considered to be more nutritious with increased antioxidant activity compared to the common cultivated type (<i>Olea europaea</i>...

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Main Authors: Christina I. Kyriakopoulou, Despina P. Kalogianni
Format: Article
Language:English
Published: MDPI AG 2020-04-01
Series:Foods
Subjects:
Online Access:https://www.mdpi.com/2304-8158/9/4/467
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author Christina I. Kyriakopoulou
Despina P. Kalogianni
author_facet Christina I. Kyriakopoulou
Despina P. Kalogianni
author_sort Christina I. Kyriakopoulou
collection DOAJ
description The wild-type of olive tree, <i>Olea europaea var Sylvestris</i> or oleaster, is the ancestor of the cultivated olive tree. Wild-type olive oil is considered to be more nutritious with increased antioxidant activity compared to the common cultivated type (<i>Olea europaea</i> L. <i>var Europaea</i>). This has led to the wild-type of olive oil having a much higher financial value. Thus, wild olive oil is one of the most susceptible agricultural food products to adulteration with other olive oils of lower nutritional and economical value. As cultivated and wild-type olives have similar phenotypes, there is a need to establish analytical methods to distinguish the two plant species. In this work, a new method has been developed which is able to distinguish <i>Olea europaea var Sylvestris</i> (wild-type olive) from <i>Olea europaea</i> L. <i>var Europaea</i> (cultivated olive). The method is based, for the first time, on the genotyping, by allele-specific, real-time PCR, of a single nucleotide polymorphism (SNP) present in the two olives’ chloroplastic genomes. With the proposed method, we were able to detect as little as 1% content of the wild-type olive in binary DNA mixtures of the two olive species.
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spelling doaj.art-dc4ab907fd68422ba15fd7b697e0f3ca2023-11-19T21:07:34ZengMDPI AGFoods2304-81582020-04-019446710.3390/foods9040467Genetic Identification of the Wild Form of Olive (<i>Olea europaea var. sylvestris</i>) Using Allele-Specific Real-Time PCRChristina I. Kyriakopoulou0Despina P. Kalogianni1Department of Chemistry, University of Patras, 26504 Rio Patras, GreeceDepartment of Chemistry, University of Patras, 26504 Rio Patras, GreeceThe wild-type of olive tree, <i>Olea europaea var Sylvestris</i> or oleaster, is the ancestor of the cultivated olive tree. Wild-type olive oil is considered to be more nutritious with increased antioxidant activity compared to the common cultivated type (<i>Olea europaea</i> L. <i>var Europaea</i>). This has led to the wild-type of olive oil having a much higher financial value. Thus, wild olive oil is one of the most susceptible agricultural food products to adulteration with other olive oils of lower nutritional and economical value. As cultivated and wild-type olives have similar phenotypes, there is a need to establish analytical methods to distinguish the two plant species. In this work, a new method has been developed which is able to distinguish <i>Olea europaea var Sylvestris</i> (wild-type olive) from <i>Olea europaea</i> L. <i>var Europaea</i> (cultivated olive). The method is based, for the first time, on the genotyping, by allele-specific, real-time PCR, of a single nucleotide polymorphism (SNP) present in the two olives’ chloroplastic genomes. With the proposed method, we were able to detect as little as 1% content of the wild-type olive in binary DNA mixtures of the two olive species.https://www.mdpi.com/2304-8158/9/4/467<i>Olea europaea var Sylvestris</i>oleasteroliveolive oilreal-time PCRadulteration
spellingShingle Christina I. Kyriakopoulou
Despina P. Kalogianni
Genetic Identification of the Wild Form of Olive (<i>Olea europaea var. sylvestris</i>) Using Allele-Specific Real-Time PCR
Foods
<i>Olea europaea var Sylvestris</i>
oleaster
olive
olive oil
real-time PCR
adulteration
title Genetic Identification of the Wild Form of Olive (<i>Olea europaea var. sylvestris</i>) Using Allele-Specific Real-Time PCR
title_full Genetic Identification of the Wild Form of Olive (<i>Olea europaea var. sylvestris</i>) Using Allele-Specific Real-Time PCR
title_fullStr Genetic Identification of the Wild Form of Olive (<i>Olea europaea var. sylvestris</i>) Using Allele-Specific Real-Time PCR
title_full_unstemmed Genetic Identification of the Wild Form of Olive (<i>Olea europaea var. sylvestris</i>) Using Allele-Specific Real-Time PCR
title_short Genetic Identification of the Wild Form of Olive (<i>Olea europaea var. sylvestris</i>) Using Allele-Specific Real-Time PCR
title_sort genetic identification of the wild form of olive i olea europaea var sylvestris i using allele specific real time pcr
topic <i>Olea europaea var Sylvestris</i>
oleaster
olive
olive oil
real-time PCR
adulteration
url https://www.mdpi.com/2304-8158/9/4/467
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AT despinapkalogianni geneticidentificationofthewildformofoliveioleaeuropaeavarsylvestrisiusingallelespecificrealtimepcr