Knowledge of the mechanisms involved in ripening and post-harvest fruit physiology is important for producers and for companies involved in fruit storage. Thus, determination of factors affecting the ripening opens new research avenues for controlling fruit quality. Arabinogalactan proteins (AGPs) are ubiquitous components of the cell wall. According to the latest reports on the cell wall structure model, there is a network of connections between AGP and other basic constituents, including pectins and hemicelluloses, named APAP1. Strikingly, despite the huge interest, no detailed research has been done so far on AGPs found in fruit, and the role, structure, and mechanism of their distribution during fruit ripening are unknown.

General goals of the project: characterization of the occurrence of AGPs in the ripening process in a model organism – tomato (1); analysis of the distribution of AGPs in naturally ripe fruit, in comparison to fruit with altered structure of AGPs (2); elucidation of the AGPs effect on the spatial-temporal localization of other cell wall constituents during ripening process (3); characterization of molecular and structural features of AGPs (4).

Reaching these objectives is linked strongly to creation of interdisciplinary collaboration between the Horticultural Genetics and Biotechnology Department of the Mediterranean Agronomic Institute of Chania (Greece) and the Department of Microstructure and Mechanics of Biomaterials in the Institute of Agrophysics of the Polish Academy of Sciences.


Project is financed by National Science Center Poland (NCN, SONATA16 2020/39/D/NZ9/00232)

Principal Investigator : Agata Leszczuk (a.leszczuk @

INTER-COST project

The INTER-COST project "Insight into the transcriptional regulation of the crosstalk between plant hormones and the stress response in fruits" has been successfully accepted and will substantially contribute to the RoxyCOSTproject for the next 3,5 years! This project belongs to Working Group 2 (WG2). “Deciphering the mechanisms of low oxygen sensing in fruit crops”. The aim is to establish a hairy root culture to help with the functional analysis of the candidate genes.


Investigator : Hélène Robert Boisivon (helene.robert.boisivon @

Virtual meeting and ITC conference grant

We have been made aware by COST Association that the virtual conference fees for ITC conference grants meetings can be considered eligible, if the other eligible criteria are fulfilled. 

So please do not hesitate to apply even for those if you wish to attend any virtual conference with registration fees.


Visit ITC conference grant page for more information.

RoxyCOST Action

Science Communication Manager

Julien Pirrello


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