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Grafting vigour is associated with DNA de-methylation in eggplant

Horticulture Research 2021年第1期8卷 3311-3320页

作者： Elisa Cerruti Carmina Gisbert Hajk-Georg Drost Danila Valentino Ezio Portis Lorenzo Barchi Jaime Prohens Sergio Lanteri cinzia comino Marco Catoni Department of Agricultural Forest and Food SciencesPlant Genetics and BreedingUniversity of TorinoGrugliascoItaly The Sainsbury Laboratory University of CambridgeCambridgeUK Institute for Conservation&Improvement of Valencian Agrodiversity(COMAV) Universitat Politècnica de ValènciaValenciaSpain Computational Biology Group Department of Molecular BiologyMax Planck Institute for Developmental BiologyTübingenGermany School of Biosciences University of BirminghamBirminghamUnited Kingdom Institute for Sustainable Plant Protection National Research Council of ItalyTorinoItaly

In horticulture,grafting is a popular technique used to combine positive traits from two different *** is achieved by joining the plant top part(scion)onto a rootstock which contains the stem and *** can provide resistance to stress and increase plant production,but despite their wide use,the biological mechanisms driving rootstock-induced alterations of the scion phenotype remain largely *** that epigenetics plays a relevant role during distance signalling in plants,we studied the genome-wide DNA methylation changes induced in eggplant(Solanum melongena)scion using two interspecific rootstocks to increase *** found that vigour was associated with a change in scion gene expression and a genome-wide hypomethylation in the CHH ***,this hypomethylation correlated with the downregulation of younger and potentially more active long terminal repeat retrotransposable elements(LTR-TEs),suggesting that graft-induced epigenetic modifications are associated with both physiological and molecular phenotypes in grafted *** results indicate that the enhanced vigour induced by heterografting in eggplant is associated with epigenetic modifications,as also observed in some heterotic hybrids.

关键词： younger driving grafted

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