terclim by ICS banner
IVES 9 IVES Conference Series 9 Open-GPB 9 Open-GPB-2024 9 Flash - Biotic interactions 9 The invasive seaweed Rugulopteryx okamurae: an innovative plant protective extract

The invasive seaweed Rugulopteryx okamurae: an innovative plant protective extract

Abstract

Grapevine downy mildew, caused by Plasmopara viticola, is a devastating disease worldwide. Most commercially important cultivars of the European grapevine are highly susceptible and therefore require the recurrent application of synthetic fungicides to control the disease, copper being the most frequently used. However, with European Union goals to lower their usage, there is a need to develop innovative and sustainable strategies. In this respect, seaweeds have proven to have great potential as phytosanitary agents, in addition to promoting plant growth and stress-tolerance.

A greenhouse experiment was conducted to determine the effectiveness of an extract of the invasive Rugulopteryx okamurae (RO) as resistance inducer and fungicide against P. viticola. The molecular and metabolic responses of two Tempranillo clones (VN40, RJ43), together with the changes on plant physiology and soil microbiota were investigated after seaweed applications and post-pathogen inoculation.

The extract preferentially induced Jasmonic acid (JA) related genes while inhibiting Salicylic acid (SA) responsive ones. In addition, in RO treated RJ43 plants SA pathway repression became stronger under P. viticola stress, and the antagonist relation between JA/SA pathways was corroborated. The later plants accumulated more piceid and had an increased activity of antioxidant enzymes. Moreover, RO slightly modified soil properties and soil fungal composition, the nematophagous biological control agent Harposporium being particularly high at seaweed treated RJ soils. Importantly, disease severity was reduced in RO treated plants indicating its ability to promote grapevine protection. All results suggest Ruguloperyx extract´s potential as palliative against P. viticola.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Article

Authors

Iratxe Zarraonaindia1,2*, Asier Cámara1, Juan José Córdoba-Granados3, Usue Pérez-López4, Enrico Cretazzo3, Amaia Mena-Petite5, Maite Lacuesta5, Ana Diez6, Emma Cantos-Villar3

1 Department of Genetics, Physical Anthropology and Animal Physiology, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Leioa (Bizkaia), Spain
2 IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
3 Instituto de Investigación y Formación Agraria y Pesquera (IFAPA) Rancho de la Merced, Consejería de Agricultura, Pesca, Agua y Desarrollo Rural, Junta de Andalucía, Cádiz, Spain
4 Department of Plant Biology and Ecology, Faculty of Science and Technology, University of the Basque Country, (UPV/EHU), Leioa (Bizkaia), Spain
5 Department of Plant Biology and Ecology, Faculty of Pharmacy, University of the Basque Country (UPV/EHU), Vitoria-Gasteiz (Araba), Spain
6 Neiker, Plant Protection and Production department, Campus Agroalimentario de Arkaute – E-01080 Vitoria-Gasteiz, Spain

Contact the author*

Keywords

Plasmopara viticola, Rugulopteryx okamurae, biostimulator, fungicide, microbiota

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Above and below: soil moisture and soil temperature interact to alter grapevine water relations

The combined effect of soil moisture and soil temperature on grapevine physiology is gaining interest in the context of global warming.

Read More

What happens with the glutathione during winemaking and the storage of the wine?

We tried to give a part of the answer to this question by monitoring glutathione during winemaking and storage. The novelty of our approach is to quantify simultaneously the three known forms of glutathione: free glutathione (GSH), oxidized form (GSSG) and glutathione-S-sulfonate (GSSO3H).

Read More

Influenza dei fattori dell’ambiente sulla risposta della pianta, e caratteristiche dell’uva della cv tannat prodotta in vigneti di tre zone climatiche dell’Uruguay

Grape typicity valorization can significantly enhance viticultural sector competitiveness to the extent that contributes to the development of a wine so distinctive and unique. This work leads to the characterization of the grapes through indicators expressing environmental effects.

Read More

The social construction of wine-growing areas: the “Graves de Bordeaux”

«Graves de Bordeaux» est une des rares appellations à porter le nom d’un terroir, au sens agronomique du terme. Et ce territoire vitivinicole présente une relative unité géographique, de Langon à Bordeaux sur la rive gauche de la Garonne.

Read More

Relation entre les caractéristiques des fromages d’Appellation d’Origine Contrôlée et les facteurs de production du lait

Les fromages d’Appellation d’Origine Contrôlée (AOC) représentent un enjeu économique important pour la filière laitière (11 % des fromages produits en France sont des fromages d’AOC, et dans certaines régions de montagne, cette proportion dépasse 50 %). Les spécificités de ces fromages et leurs liaisons avec les caractéristiques du terroir constituent un système complexe où interagissent en particulier la technologie fromagère et les caractéristiques des laits (composition chimique en particulier). Ces dernières dépendent elles-mêmes des caractéristiques des animaux (origine génétique, facteurs physiologiques, état sanitaire) et de leur mode de conduite (alimentation, hygiène, traite…) (fig. 1). L’influence de ces facteurs de production (alimentation et type d’animal en particulier) sur les caractéristiques des fromages est fréquemment mise en avant par les fromagers, sur la base d’observations empiriques. Il existe cependant très peu de travaux expérimentaux sur le sujet, en raison, entre autres, de la difficulté de séparer correctement les effets propres de ces facteurs d’amont de ceux liés à la technologie fromagère.

Read More