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.

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…

Analyse de la perception du terroir et de sa valorisation par les viticulteurs de l’Anjou

An integrated terroir characterization is currently realized in the French northern vineyard: “Anjou”. The concept of Basic Terroir Unit (B.T.U.) and its associated ground model “Rock, Alteration, Alterite” are used in this characterization. This work is coupled to a viticultural survey, based on parcels.

Relationships between berry quality and climatic variability in grapevine cultivars from Piedmont

A major topic in viticultural research is the analysis of the relationships between climate on one side, and grape and wine quality on the other. It is well known that climatic conditions

Zoning mountain landscapes for a valorisation of high identity products

Mountain agriculture is made difficult by the geomorphological complexity of the territory. This is especially true for viticulture: over the centuries the work of men in such a difficult environment

Sensory and nephelometric analysis of tannin fractions obtained by ultrafiltration of red wines

The assessment of red wine mouthfeel relies primarily on the sensory description of its tannic properties. This evaluation could be improved by gaining a better understanding of the physicochemical properties of these tannins. Hence, the objectives of the present study were threefold: (1) to gain an insight into the sensory properties of subpopulations of proanthocyanidic tannins of different molecular sizes obtained through several ultrafiltration steps, (2) to quantify the kinetics of haze formation of these proanthocyanidic tannins in a dynamic polyvinylpyrrolidone (PVP) precipitation test, (3) to determine whether a correlation exists between the sensory and the precipitation data.

NAVIC–20 years of a lean management model for wine business R&D

Considering That Innovation Supports A Company’s Competitive Advantage And Drive Higher Profits (Dogru A. & Peyrette J., 2022), A Key Challenge Of Wine Companies Is Getting Practitioners To Understand That Innovation-Related Wine Research Increases The Likelihood Of Competitive Advantage, Bringing Financial Success. A Continued And Enhanced Investment In Research Is, Thus, A Prerequisite For Commercial Success In Today’s Globalized And Competitive Wine Industry (Høj P., Pretorius I.S., & Day R., 2003).