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Differential characteristics of olive pollen from different cultivars: biological and clinical implications.

Authors: Alché Ramírez, Juan de Dios; Castro López, Antonio Jesús; Jiménez-López, José Carlos; Morales, Sonia; Zafra, Adoración; Hamman-Khalifa, Abdel Mounim; Rodríguez García, María Isabel;

Differential characteristics of olive pollen from different cultivars: biological and clinical implications.

Abstract

[ES] El olivo es un cultivo ampliamente representado en el mundo. Su germoplasma es muy amplio, con 250 variedades sólo en España. La capacidad del polen para germinar, que presenta notables diferencias entre variedades, ha sido estudiada en detalle. El material usado comúnmente para estudios clínicos y biológicos es, sin embargo, polen comercial de cultivares de origen desconocido. Nuestro objetivo es evaluar la posible heterogeneidad de los cultivares de olivo en relación a la presencia de varios alérgenos del polen, y determinar si esas diferencias tienen relevancia biológica y clínica. Estudios previos muestran que la mayor parte de los alérgenos aislados y caracterizados hasta la fecha son altamente polimórfi cos. Los cultivares de olivo muestran amplias diferencias en los niveles de expresión de muchos alérgenos, así como en el número y características moleculares de las isoformas alergénicas expresadas. Estas diferencias se mantienen a lo largo de años, y son intrínsecas a la genética de cada cultivar. Este amplio polimorfi smo parece estar implicado en la fi siología del sistema reproductivo del olivo, en relación con la adaptación de la planta a diferentes condiciones ambientales, el establecimiento de un sistema de compatibilidad, y el dinamismo del polen. Las diferencias en la composición alergénica de los cultivares, particularmente en cuanto al alérgeno Ole e 1, son responsables de las importantes diferencias en la potencia alergénica de los extractos. Estos hallazgos pueden tener numerosas implicaciones en la diagnosis y terapia de la alergia al polen del olivo. Discutimos cómo las diferencias entre cultivares afectan a la calidad del polen, a la efi cacia y seguridad del diagnóstico y la terapia, así como al desarrollo de nuevas vacunas basadas en el uso de alérgenos recombinantes.

[EN] The olive tree is grown in many parts of the world. Its germplasm is very broad, with 250 varieties in Spain alone. Variations in the ability of pollen to germinate have been studied in detail and show conspicuous differences between varieties. However, commercial olive pollen from cultivars whose origin is unknown is the material that is commonly used for clinical and biological studies. We aim to assess the putative heterogeneity of olive cultivars with regard to the presence of several pollen allergens and to determine whether these differences have biological and clinical relevance. Previous studies show that most allergens isolated and characterized to date are highly polymorphic. Olive cultivars display wide differences in the expression levels of many allergens and in the number and molecular characteristics of the allergen isoforms expressed. These differences are maintained over the years, and are intrinsic to the genetics of each cultivar. Such broad polymorphism seems to be involved in the physiology of the olive reproductive system, which might include the adaptation of the plant to different environmental conditions, the establishment of the compatibility system, and pollen performance. The differences in allergen composition in cultivars, particularly in the Ole e 1 allergen, are responsible for the important differences in the allergenic potency of the extracts. These fi ndings could have a number of implications for the diagnosis and therapy of olive pollen allergy. We discuss how cultivar differences affect extract quality, diagnostic and therapeutic effi cacy and safety, and the development of new vaccines based on the use of recombinant allergens.

7 páginas, 4 figuras.

Peer reviewed

Country
Spain
Keywords

Polymorphism, Genetic, Physiology, Polen, Olivo, Olive, Rhinitis, Allergic, Seasonal, Clinical test, Allergens, Fisiología, Spain, Alérgenos, Olea, Variety, Pruebas clínicas, Humans, Pollen, Protein Isoforms, Cultivar, Polymorphism, Variedad, Polimorfismo

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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