terclim by ICS banner
IVES 9 IVES Conference Series 9 Diversity of leaf functioning under water deficit in a large grapevine panel: high throughput phenotyping and genetic analyses

Diversity of leaf functioning under water deficit in a large grapevine panel: high throughput phenotyping and genetic analyses

Abstract

Water resource is a major limiting factor impacted by climate change that threatens grapevine production and quality. Understanding the ecophysiological mechanisms involved in the response to water deficit is crucial to select new varieties more drought tolerant. A major bottleneck that hampers such advances is the lack of methods for measuring fine functioning traits on thousands of plants as required for genetic analyses. This study aimed at investigating how water deficit affects the trade-off between carbon gains and water losses in a large panel representative of the Vitis vinifera genetic diversity. 250 genotypes were grown under 3 watering scenarios (well-watered, moderate and severe water deficit) in a high-throughput phenotyping platform. To assess traits related to carbon and water functioning on the whole panel, we deployed an original approach where 120 leaves of 40 genotypes were phenotyped combining low-throughput devices to precisely measure ecophysiological traits, as well as innovative, portable high-throughput devices to measure near infrared reflectance, porometry and chlorophyll fluorescence. These data allowed us to build cutting-edge statistical models, such as multiblock models, which jointly use data from different devices, for predicting ecophysiological traits. Models for predicting photosynthesis and transpiration were accurate enough to be applied on the entire panel, only measured with high-throughput devices. Such predictions highlighted a wide range of genotypic variability and contrasting responses to water deficit. Multi-traits and Multi-Environment Genome Wide Association Studies further revealed genomic regions associated with these responses, and underlying candidate genes are being investigated. 

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Article

Authors

Eva Coindre1,2*, Laurine Chir2, Maxime Ryckewaert3, Romain Boulord2, Mélyne Falcon2, Thomas Laisné2, Gaëlle Rolland2, Maëlle Lis2, Llorenç Cabrera-Bosquet2, Agnès Doligez1, Thierry Simonneau2, Benoît Pallas2, Aude Coupel-Ledru2, Vincent Segura1,4

1 AGAP Institut, Univ Montpellier, CIRAD, INRAE, Institut Agro, Montpellier, France
2 LEPSE, Univ Montpellier, INRAE, Institut Agro, Montpellier, France
3 Inria, LIRMM, Univ Montpellier, CNRS, Montpellier, France
4 UMT Geno-Vigne, IFV, INRAE, Montpellier, France

Contact the author*

Keywords

water deficit, high throughput phenotyping, prediction, photosynthesis/transpiration coupling, GWAS

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

Application of Hyper Spectral Imaging for early detection of rachis browning in table grapes

Rachis browning is a common abiotic stress that occurs during postharvest storage, leading to a decrease in commercial value of table grapes and resulting in significant economic losses. Its early detection could enable the implementation of preventive strategies. In this report, we show the feasibility of a non-destructive early detection of browning based on Hyper Spectral Imaging (HSI). Furthermore, rachis samples were subjected to transcriptomic analysis to understand putative pathways causing differences in browning within varieties.

Read More

From protein-centered to gene-centered approaches to investigate DNA-protein interactions in grapevine

DNA-binding proteins play a pivotal role in critical cellular processes such as DNA replication, transcription, recombination, repair, and other essential activities. Consequently, investigating the interactions between DNA and proteins is of paramount importance to gain insights into these fundamental cellular mechanisms. Several methodologies have been devised to uncover DNA-protein interactions, which can be broadly categorized into two approaches. The “protein-centered” approach focuses on identifying the DNA sequences bound by a specific transcription factor or a set of TFs. Techniques falling within this category include chromatin immunoprecipitation, and protein-binding microarrays.

Read More

GrapeBreed4IPM: developing sustainable solutions for viticulture through multi-actor innovation targeting breeding for integrated pest management

According to the World Economic Forum and the European Union’s Biodiversity Strategy for 2030, the loss of biodiversity and the collapse of ecosystems are major threats facing humanity in the future.

Read More

Rară Neagră 2.0: prospecting, improving and safeguarding the biodiversity in an eastern european heritage grape variety

The Rară Neagră 2.0 project aims to restore and safeguard the intra-varietal diversity of the ancient Eastern European grape variety Rară Neagră through polyclonal selection and the establishment of a certified genetic conservatory.

Read More

Plant nitrogen assimilation and partitioning as a function of crop load

Aims: The optimization of nitrogen use efficiency (NUE, i.e. uptake, assimilation and partitioning) is a solution towards the sustainable production of premium wines, while reducing fertilization and environmental impact. The influence of crop load on the accumulation of N compounds in fruits is still poorly understood. The present study assesses the impacts of bunch thinning on NUE and the consequences on the free amino N (FAN) profile in fruits.

Read More