terclim by ICS banner
IVES 9 IVES Conference Series 9 The role of phytoplasma effector interaction with phosphoglucomutase in the pathogenicity of ‘Candidatus Phytoplasma solani’ in grapevine 

The role of phytoplasma effector interaction with phosphoglucomutase in the pathogenicity of ‘Candidatus Phytoplasma solani’ in grapevine 

Abstract

Bois noir is the most widespread phytoplasma grapevine disease in Europe. It is associated with ‘CandidatusPhytoplasma solani’. In symptomatic grapevines cv. ‘Zweigelt’ infected with ‘Ca. P. solani’ compared with uninfected grapevines, metabolic pathways associated with phosphorylated sugar production were induced both at the transcriptional level and at the level of activity of the corresponding enzymes (Dermastia et al., 2021, Int. J. Mol. Sci.22: 3531). In particular, the expression of gene coding for phosphoglucoisomerase was upregulated, resulting in increased phosphoglucoisomerase enzyme activity. Phosphoglucoisomerase converse glucose-1-phosphate to glucose-6-phosphate, which can be used as a substrate for starch biosynthesis. Besides, phosphoglucomutase activity was induced also in Nicotiana benthamiana leaves transiently transformed with the construct of putative effector PoStoSP28, previously annotated as an antigenic membrane protein StAMP related to interaction of phytoplasma with its insect vector. Using a pull-down assay and in planta co-IP assay, we confirmed that PoStoSP28 interacts with both grapevine phosphoglucomutases. In transiently transformed N. benthamiana leaves, PoStoSP28 was localized in the nucleus and cytosol and accompanied by a distinct border at the periphery or just outside the nucleus and in the thread-like structures spanning the cells. Upon closer inspection, some autophagosome-like structures were found in N. benthamiana cells expressing the PoStoSP28 effector. Moreover, PoStoSP28 was not only localized in the autophagosome but also increased the occurrence of autophagosomes (Dermastia et al., 2023, Front. Plant Sci. 14: 1232367). Therefore, the results suggest that PoStoSP28 plays a role in the pathogenicity of phytoplasma in grapevine by interacting with grapevine phosphoglucomutase enzymes.

Download the abstract

DOI:

Publication date: June 13, 2024

Issue: Open GPB 2024

Type: Article

Authors

Maruša Pompe Novak1,2*, Rebeka Strah1,3, Špela Tomaž1,3, Tjaša Lukan1, Anna Coll1, Maja Zagorščak1, Kristina Gruden1, Günter Brader4, Marina Dermastia1

1 Department of Biotechnology and Systems Biology, National Institute of Biology, Ljubljana, Slovenia
2 Faculty of Viticulture and Enology, University of Nova Gorica, Vipava, Slovenia
3 Jožef Stefan International Postgraduate School, Ljubljana, Slovenia
4 Bioresources Unit, Health & Environment Department, Austrian Institute of Technology, Tulln, Austria

Contact the author*

Keywords

grapevine, Candidatus Phytoplasma solani, effector, StAMP, phosphoglucomutase

Tags

IVES Conference Series | Open GPB | Open GPB 2024

Citation

Related articles…

A novel dataset and deep learning object detection benchmark for grapevine pest surveillance

Flavescence dorée (FD) stands out as a significant grapevine disease with severe implications for vineyards. The American grapevine leafhopper (Scaphoideus titanus) serves as the primary vector, transmitting the pathogen that causes yield losses and elevated costs linked to uprooting and replanting. Another potential vector of FD is the mosaic leafhopper, Orientus ishidae, commonly found in agroecosystems. The current monitoring approach involves periodic human identification of chromotropic traps, a labor-intensive and time-consuming process.

Read More

Comparison between the volatile chemical profile of two different blends for PDO “Valpolicella Superiore”

Valpolicella is a famous wine producing region located in the north of Verona close to Garda lake and owes its fame above all to the production of two Protected Designation of Origins (PDOs) withered wines: Amarone and Recioto. Nowadays the production of another PDO, Valpolicella Superiore is gaining more attention by the consumers, increasing the interest of the wineries to improve the quality of this wines

Read More

Characterization of the DOC wine “Colli Piacentini Gutturnio” obtained in three traditional areas

The poster presents the results of the 3rd year of activity of the project “Characterization of the wine productions of the italian regions. The DOC wine Colli Piacentini Gutturnio”.

Read More

Le réseau français des partenaires de la sélection vigne : un dispositif unique au monde au service de la sauvegarde du patrimoine variétal

The French vine selection partners network is currently made up of 40 regional partners, grouped around IFV (French Institute for Vine and Wine) and INRAE (national research institute for agriculture and environment), whose missions are preservation, selection, and innovation of our varietal diversity. The originality of this device is based on a 3-level organisation: – varietal diversity preservation, with the world reference: the INRAE’s vine genetics resources centre of Vassal-Montpellier (Marseillan, France), the world’s largest ampelographic collection, which includes nearly 6 000 accessions of cultivated Vitis vinifera from 54 countries, as well as rootstocks, interspecific hybrids, wild vines (lambrusques) and wild American and Asian species.

Read More

Overall conceptual characterization of aged dry white wines using a mental descriptive questionnaire

The purpose of the present study was to understand the overall concept of an aged dry white wine using a descriptive mental questionnaire. A total of 680 worldwide participants, grouped according to their involvement in the wine business, replied to an online questionnaire to characterize the sensory analytical and synthetic descriptors of an aged dry white wine. The descriptors were selected using a Check-All-That-Apply (CATA) approach concerning wine colour, aroma, taste, mouthfeel, and global appreciation.

Read More