Grafting vigour is associated with DNA de-methylation in eggplant.
Journal
Horticulture research
ISSN: 2662-6810
Titre abrégé: Hortic Res
Pays: England
ID NLM: 101655540
Informations de publication
Date de publication:
01 Nov 2021
01 Nov 2021
Historique:
received:
01
02
2021
accepted:
30
07
2021
revised:
20
07
2021
entrez:
1
11
2021
pubmed:
2
11
2021
medline:
2
11
2021
Statut:
epublish
Résumé
In horticulture, grafting is a popular technique used to combine positive traits from two different plants. This is achieved by joining the plant top part (scion) onto a rootstock which contains the stem and roots. Rootstocks 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 unknown. Given 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 vigour. We found that vigour was associated with a change in scion gene expression and a genome-wide hypomethylation in the CHH context. Interestingly, 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 plants. Our results indicate that the enhanced vigour induced by heterografting in eggplant is associated with epigenetic modifications, as also observed in some heterotic hybrids.
Identifiants
pubmed: 34719687
doi: 10.1038/s41438-021-00660-6
pii: 10.1038/s41438-021-00660-6
pmc: PMC8558322
doi:
Types de publication
Journal Article
Langues
eng
Pagination
241Informations de copyright
© 2021. Crown.
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