terclim by ICS banner
IVES 9 IVES Conference Series 9 International Congress on Grapevine and Wine Sciences 9 2ICGWS-2023 9 Nitrogen forms and Iron deficiency: how do Grapevine rootstocks responses change?

Nitrogen forms and Iron deficiency: how do Grapevine rootstocks responses change?

Abstract

Grapevine rootstocks provide protection against environmental biotic and abiotic stresses. Nitrogen (N) and iron (Fe) are growth-limiting factors in many crop plants due to their effects on the chlorophyll and photosynthetic characteristics. Iron nutrition of plants can be significantly affected by different nitrogen forms through altering the uptake ratio of cations and anions, and changing rhizosphere pH. The aim of this study was to investigate the response mechanisms of grapevine rootstocks due to the interaction between different nitrogen forms and iron uptake. Rooted woody cuttings of the rootstocks Fercal (V. berlandieri x V. vinifera) and Couderc 3309 (V. riparia x V. rupestris) were grown within a hydroponic system (Kick-Brauckmann, 7.5 L pots) filled with modified half-strength Hoagland solution under semi-controlled climatic glasshouse conditions in 2021. Plants were grown with or without FeNa(III)- EDTA, and with two  NO3/NH4+ ratios (100:0; 50:50). The results could differentiate iron deficiency effects, nitrogen form effects and rootstock effects. Interveinal chlorosis of young leaves appeared earlier on 3309C from the second week of treatment with NO3/NH4+ (100:0)/-Fe, while Fercal leaves showed less severe symptoms after four weeks of treatment, corresponding with chlorophyll concentrations lower by 75% for 3309C and 57% for Fercal. The treatment NO3/NH4+(50:50)/+Fe had significantly higher biomass compared with NO3/NH4+(100:0)/+Fe in both rootstocks while results with NO3/NH4+(100:0)/-Fe were lowest. Ferric chelate reductase (FCR) activity was specifically increased under iron deficiency in Fercal with both N combinations, whereas 3309C showed an increase in FCR activity just with NO3/NH4+ (50:50). These first results indicate that rootstocks differ in their preference on both the physiological and molecular level depending on the nitrogen form and in interaction with iron deficiency stress.

References:

1) Nasar, J. et al. (2022). Nitrogen fertilization coupled with iron foliar application improves the photosynthetic characteristics, photosynthetic nitrogen use efficiency, and the related enzymes of maize crops under different planting patterns. Front. Plant Sci. 13, 988055.
2) Yin, H. et al. (2020). Effect of ammonium and nitrate supplies on nitrogen and sucrose metabolism of cabernet sauvignon (Vitis vinifera cv.). J. Sci. Food Agric.100(14), 5239–5250. doi: 10.1002/jsfa.10574.

DOI:

Publication date: October 9, 2023

Issue: ICGWS 2023

Type: Poster

Authors

Khalil, Sarhan1*; Griesser, Michaela1; Tomasi, Nicola2; Zanin, Laura2; Lodovici, Arianna2; Forneck, Astrid1

University of Natural Resources and Life Sciences, Vienna (BOKU), Institute of Viticulture and Pomology, Korad-Lorenz-Straße 24, 3430 Tulln an der Donau, Austria.
2 University of Udine, Department of Agricultural, Food, Environmental and Animal Sciences, Via delle Scienze, 206 – 33100 – Udine, Italy.

Contact the author*

Keywords

grapevine, rootstock, nitrate, ammonium, iron, ferric chelate reductase

Tags

2ICGWS | ICGWS | ICGWS 2023 | IVES Conference Series

Citation

Related articles…

Biotype diversity within the autochthonous ‘Bobal’ grapevine variety

Bobal is the second most widely grown Spanish red grape variety (54,165 has), mainly cultivated in the Valencian Community and especially, in Utiel-Requena region (about 67% of 34,000 has). In this study, agronomic and enological parameters were determined in 98 biotypes selected during 2018 and 2019 in more than 50 vineyards over 50 years-old in the Utiel-Requena region. Moreover, a multi-criteria approach considering temperature and rainfall (Fig. 1A), among other parameters, was made to establish three different zones within the region (Fig. 1B), where in the future the selected biotypes will evaluated. In fact, in 2020, 4 replicates and 12 vines per biotype were planted in an experimental vineyard to preserve this important intra-cultivar diversity.

Dynamics of Saccharomyces cerevisiae population in spontaneous fermentations from Granxa D’Outeiro terroir (DOP Ribeiro, NW Spain)

Granxa D’Outeiro is a recovered ancient vineyard located in the heart of DOP Ribeiro, where traditional white grapevine varieties are growing under sustainable management. Spontaneous fermentations using grape must from Treixadura, Albariño, Lado, Godello, and Loureira varieties were carried out at experimental winery of Evega. Yeasts were isolated from must and at different stages of fermentation. Those colonies belonging to Saccharomyces cerevisiae were characterized at strain level by mDNA-RFLPs.

Effect of rising atmospheric CO2 levels on grapevine yield and composition by the middle of the 21st century: what can we learn from the VineyardFACE?

Atmospheric CO2 levels have been rising continuously since the industrial revolution, affecting crop physiology, yield and quality of harvest products, and grapevine is no exception [1]. Most of previously reported studies used potted plants in controlled environments, and explored grapevine response to relatively high CO2 levels, 700 ppm or more. The vineyardFACE, established in Geisenheim in 2012, uses a free air carbon dioxide enrichment (FACE) system to simulate a moderate (ambient +20%) increase in atmospheric CO2 in a vineyard planted with cvs. Cabernet-Sauvignon and Riesling grafted on rootstock 161-49 Couderc and SO4, respectively.

Lipids at the crossroads of protection: lipid signalling in grapevine defence mechanisms

Understanding grapevine molecular processes and the underlying defence responses is vital for developing sustainable disease control strategies. Lipid signalling pathways, involving the synthesis and degradation of lipid molecules, have emerged as a key regulator in plant defence against pathogens. This study aims to elucidate the role of fatty acids and lipid signalling in grapevine’s defence response to P. viticola infection. The expression of lipid metabolism-related as well as lipid signalling genes was analysed, by qPCR, in three grapevine genotypes: Chardonnay (susceptible), Regent (tolerant) with Rpv3-1 resistance loci, and Sauvignac (resistant) harbouring a pyramid of Rpv12 and Rpv3-1 resistance loci.

Study of Spanish wine sensory analysis data over a 3-year period

This study presents an investigation based on sensory analysis data of Spanish wines with geographical indications collected over a three-year period. Sensory analysis plays a crucial role in assessing the quality, characteristics, and perception of wines. The trained tasting panel at Dolmar Laboratory, accredited for objective sensory evaluation of wines since 2016, has been tasting over 5000 wines. However, it is since 2021, when a computer application for tastings was developed, that the digitalization of data allows for detailed statistical analysis of the results.