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Title: Ιntra-species grafting induces epigenetic and metabolic changes accompanied by alterations in fruit size and shape of Cucurbita pepo L.
Authors: Aliki Xanthopoulou
Aphrodite Tsaballa
Ioannis Ganopoulos
Aliki Kapazoglou
Evangelia Avramidou
Filippos A. Aravanopoulos
Theodoros Moysiadis
Maslin Osathanunkul
Athanasios Tsaftaris
Andreas G. Doulis
Apostolos Kalivas
Eirini Sarrou
Stefan Martens
Irini Nianiou-Obeidat
Panagiotis Madesis
Keywords: Agricultural and Biological Sciences
Biochemistry, Genetics and Molecular Biology
Issue Date: 1-Jan-2018
Abstract: © 2018, Springer Nature B.V. To further understand the impact of grafting on fruit characteristics and to comprehend the mechanisms involved in graft-induced changes we studied homo- and hetero- grafted Cucurbita pepo cultivars (cv.) that vary in fruit size and shape. C. pepo cv. ‘Munchkin’ and cv. ‘Big Moose’ as well as cv. ‘Round green’ and cv. ‘Princess’ were homo-grafted and reciprocally hetero-grafted. The results show significant changes in fruit size when ‘Big Moose’ was grafted onto ‘Munchkin’ rootstocks in comparison to homo-grafted controls. Statistically significant changes were also observed in fruit shape when cv. ‘Princess’ was grafted on cv. ‘Round green’. This is the first report of such phenotypic changes after intra-species/inter-cultivar grafting in Cucurbitaceae. Additionally, we found significant changes in (i) secondary metabolite profile, (ii) global DNA methylation pattern and (iii) miRNA expression patterns in grafted scions and (iv) DNA methylation on graft-induced phenotypic changes in grafted plants. Our results contribute to further understanding graft-induced effects on fruit morphology in intra-species grafting. Furthermore, our results pave the way for understanding the role of phenolic metabolites and epigenetic molecular mechanisms on the phenotypic changes recorded.
ISSN: 15735087
Appears in Collections:CMUL: Journal Articles

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