scholarly journals Achievements and Challenges towards a Sustainable Conservation and Use of ‘Galega vulgar’ Olea europaea Variety

Agronomy ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1467
Author(s):  
Hélia Sales ◽  
João Nunes ◽  
Maria Carlota Vaz Patto
Keyword(s):  
Olive Oil ◽  
Olea Europaea ◽  
Production Systems ◽  
Oil Quality ◽  
Olive Tree ◽  
Life Cycle Thinking ◽  
Mediterranean Countries ◽  
Sustainable Conservation ◽  
Olea Europaéa

The cultivated Olea europaea L., or olive tree, is an ancient crop extremely relevant for the bioeconomy of Mediterranean countries, especially for Portugal. With orchard modernization, Portugal has the potential to become the third-largest producer of olive oil over the next decade. In this country, the main national variety is ‘Galega vulgar,’ characterized by an excellent olive oil quality, rusticity and tolerance to drought. Nevertheless, its production has suffered a reduction due to replacement by foreign varieties. The present narrative review offers an overall perspective of present gaps and challenges to the conservation and use of ‘Galega vulgar.’ Existing information about traditional and innovative olive production systems, and the importance of life cycle thinking approaches for a sustainable olive chain were synthesized, focusing particularly in the last 10 years. Furthermore, the olive molecular characterization advances and their breeding importance were also evaluated considering their application to this Portuguese variety. To ensure an efficient and sustainable exploitation of the ‘Galega vulgar,’ we propose that efforts should concentrate on the characterization of the existing variability and development of genotype to phenotype prediction tools, integrating detailed molecular marker genotypic and environmental characterization, to support better informed conservation and breeding decisions in a multi-environment context.

Olive tree (Olea europaea L. cv. Zelmati) grown in hot desert climate: Physio-biochemical responses and olive oil quality

2020 ◽  
Vol 261 ◽  
pp. 108915
Author(s):  
Yesmine Ben Rouina ◽  
Mohamed Zouari ◽  
Nacim Zouari ◽  
Bechir Ben Rouina ◽  
Mohamed Bouaziz
Keyword(s):  
Olive Oil ◽  
Olea Europaea ◽  
Oil Quality ◽  
Olive Tree ◽  
Olea Europaea L ◽  
Biochemical Responses ◽  
Olive Oil Quality ◽  
Desert Climate ◽  
Olea Europaéa

scholarly journals Characterization of Olive (Olea Europaea L.) Genetic Resources via PCR-Based Molecular Marker Systems

2021 ◽  
Vol 2 (1) ◽  
pp. 26-33
Author(s):  
S. Galatali ◽  
N. Abdul Ghafoor ◽  
E. Kaya
Keyword(s):  
Molecular Marker ◽  
Genetic Resources ◽  
Olea Europaea ◽  
Oil Quality ◽  
Mediterranean Area ◽  
Olea Europaea L ◽  
Olive Cultivars ◽  
Olive Varieties ◽  
Olea Europaéa

Olea europaea L., which is one of the ancient culture species cultivated in the Mediterranean area, has approximately 1200 cultivars. Its wild thype forms from O. europaea subsp. europaea var. sylvestris and its culture type forms from O. europaea subsp. europaea var. europaea. Olive cultivation is multiplied by grafting or cutting whereas wild type olive seedlings derived from seeds of O. europaea L. var. sylvestris. Because they have very big level heterozygosities, the genetic diversity of olive cultivars is quite high that they are predominantly allogamus. This genetic variability causes many confusions for identification of olive cultivars and since both oil quality and olive productivity are traits inherited to a variety, it is urgently needed to solve characterization and evaluation of olive genetic resources. The molecular marker systems are independent from environmental factors and effective technology to both detect homonymous and synonymous of cultivars and identify olive varieties. The current review is aimed to present molecular marker systems for identification and characterization of olive cultivars and emphasize their application for conservation of olive germplasm.

GENETIC CHARACTERIZATION OF OLIVE TREE (OLEA EUROPAEA L.) INTENDED FOR OIL PRODUCTION IN CORSICA

2002 ◽  
pp. 163-166 ◽  
Author(s):  
V. Bronzini de Caraffa ◽  
J. Maury ◽  
D. de Rocca Serra ◽  
J. Giannettini ◽  
G. Besnard
Keyword(s):  
Olea Europaea ◽  
Genetic Characterization ◽  
Oil Production ◽  
Olive Tree ◽  
Olea Europaea L ◽  
Olea Europaéa

scholarly journals Chemical Characterization of Oleaster, Olea europaea var. sylvestris (Mill.) Lehr., Oils from Different Locations of Northeast Portugal

2020 ◽  
Vol 10 (18) ◽  
pp. 6414
Author(s):  
Nuno Rodrigues ◽  
Teresa Pinho ◽  
Susana Casal ◽  
António M. Peres ◽  
Paula Baptista ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Olea Europaea ◽  
Genetic Material ◽  
Chemical Characterization ◽  
Olive Tree ◽  
Tocopherol Content ◽  
Oil Composition ◽  
Breeding Programs ◽  
Olea Europaéa

Oleaster (Olea europaea var. sylvestris), or the wild olive tree, has great interest as a source of genetic material for olive breeding programs. Nevertheless, information about its oil composition is scarce. In the present work, the characterization of oleaster fruit morphology and oil chemical composition from three different tree populations in Northeastern Portugal (Moncorvo, Alijó and Vila Nova de Foz Côa) was performed. The three studied populations presented some morphological differences in the fruits, but similar oil chemical composition. Oleic acid (68.9–70.6%) was the most abundant fatty acid. High variability was observed in total tocopherol content, ranging between 263 and 503 mg/kg. Additionally, high amounts of total sterols were found, from 1742 to 2198 mg/kg of oil. A rich composition in phenols was found with 14 phenolic compounds identified. The evaluated parameters for oleander oils allowed discriminating the oils according to the geographical origin and were consistent with those commonly found in olive oil, showing that they are particularly rich in antioxidants and can be exploited in breeding programs to increase the amounts of bioactive compounds in cultivated oils.

scholarly journals Pedologic Factors Affecting Virgin Olive Oil Quality of “Chemlali” Olive Trees (Olea europaea L.)

2017 ◽  
Vol 66 (8) ◽  
pp. 907-915 ◽  
Author(s):  
Mouna Ben Rached ◽  
Gianni Galaverna ◽  
Martina Cirlini ◽  
Dalenda Boujneh ◽  
Mokhtar Zarrouk ◽  
...  
Keyword(s):  
Olive Oil ◽  
Olea Europaea ◽  
Oil Quality ◽  
Virgin Olive Oil ◽  
Factors Affecting ◽  
Olive Oil Quality ◽  
Olive Trees ◽  
Olea Europaéa

Olive and olive oil quality after intensive monocone olive growing (Olea europaea L., cv. Kalamata) in different irrigation regimes

2002 ◽  
Vol 77 (1) ◽  
pp. 27-34 ◽  
Author(s):  
M Patumi ◽  
R d'Andria ◽  
V Marsilio ◽  
G Fontanazza ◽  
G Morelli ◽  
...  
Keyword(s):  
Olive Oil ◽  
Olea Europaea ◽  
Oil Quality ◽  
Olea Europaea L ◽  
Olive Oil Quality ◽  
Irrigation Regimes ◽  
Olea Europaéa

scholarly journals Genetic Identification of the Wild Form of Olive (Olea europaea var. sylvestris) Using Allele-Specific Real-Time PCR

Foods ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 467
Author(s):  
Christina I. Kyriakopoulou ◽  
Despina P. Kalogianni
Keyword(s):  
Olive Oil ◽  
Real Time ◽  
Real Time Pcr ◽  
Olea Europaea ◽  
Olive Tree ◽  
Wild Form ◽  
Wild Type ◽  
Olea Europaea L ◽  
Allele Specific ◽  
Olea Europaéa

The wild-type of olive tree, Olea europaea var Sylvestris 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 (Olea europaea L. var Europaea). 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 Olea europaea var Sylvestris (wild-type olive) from Olea europaea L. var Europaea (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.

scholarly journals Olive Leaf (Olea europaea L. folium): Potential Effects on Glycemia and Lipidemia

2020 ◽  
Vol 76 (1) ◽  
pp. 10-15 ◽  
Author(s):  
Nilüfer Acar-Tek ◽  
Duygu Ağagündüz
Keyword(s):  
Olea Europaea ◽  
Olive Tree ◽  
Olive Leaf ◽  
Potential Health ◽  
Beneficial Effects ◽  
Positive Effects ◽  
Olea Europaea L ◽  
Toxicity Studies ◽  
Mediterranean Countries ◽  
Olea Europaéa

Background: Olive tree (Olea europaea, Oleaceae) leaves have been widely used in traditional herbal medicine to prevent and treat various diseases especially in Mediterranean countries. They contain several potentially bioactive compounds that may have hypoglycemic and hypolipidemic properties. Summary: The literature has recently been attempting to define the relationship between olive leaf (Olea europaea L. folium) polyphenols and a number of health problems. Oleuropein, the basic phenolic compound of olive leaf and its extract, is responsible for the characteristic bitter taste and unique aroma of olive fruits. Furthermore, it is shown that oleuropein and its hydrolyzed products have many beneficial effects on human health because of its antioxidant characters. A number of studies report that olive leaf has potentially positive effects on the parameters related to diabetes and cardiovascular diseases by various mechanisms. Besides, toxicity studies suggest that olive leaf is generally safe even at high doses. Key messages: Although current results obtained until today seem promising, the studies in this subject are usually on cell culture and animal trials. Moreover, mostly the extract forms of olive leaves are used in the studies. More randomized controlled human clinical trials with extensive toxicity studies are needed to evaluate potential health effects and safety.

scholarly journals Using Two Retrotransposon Based Marker Systems (IRAP and REMAP) for Molecular Characterization of Olive (Olea europaea L.) Cultivars

2016 ◽  
Vol 44 (1) ◽  
pp. 167-174 ◽  
Author(s):  
Ergun KAYA ◽  
Emel YILMAZ-GOKDOGAN
Keyword(s):  
Olea Europaea ◽  
Clonal Selection ◽  
Oil Quality ◽  
Olive Cultivar ◽  
Fruit Productivity ◽  
Olive Cultivars ◽  
High Level ◽  
Issr Primers ◽  
Olea Europaéa

Olive (Olea europaea L.) is one of the most characteristic agricultural trees of the Mediterranean region and has a large number of cultivar diversity. Olive cultivar characterization is very important especially for the fruit productivity and olive oil quality. In the present study, 46 clones belonging to Turkey (eight cultivars, each having five clones) and Italy (two cultivars, each having three clones) were assessed for cultivar characterization via inter-retrotransposon amplified polymorphism (IRAP) and retrotransposon-microsatellite amplified polymorphism (REMAP) marker systems using 10 LTR and 10 ISSR primers. In total, 368 band profiles were obtained, 358 of which are polymorphic (97.28% polymorphism). The cultivars were segregated into three main groups, each group having several branches, where all the clones of each cultivar were belonging to the same main group. The only exception to that was the distribution of the clones of cultivar Yaglik, ‘Yaglik 4’ and ‘Yaglik 5’, into different main groups. IRAP and REMAP analysis showed a high level of genetic variability among the olive cultivars in this study and this marker systems would be useful tool for clonal selection programs.

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