Merging genotypes graft union formation and scion–rootstock interactions

Grafting has been utilised for at least the past 7000 years. Historically, grafting has been developed by growers without particular interest beyond the agronomical and ornamental effects, and thus knowledge about grafting has remained largely empirical. Much of the commercial production of fruit, a...

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Published inJournal of experimental botany Vol. 70; no. 3; pp. 747 - 755
Main Authors Gautier, Antoine T., Chambaud, Clément, Brocard, Lysiane, Ollat, Nathalie, Gambetta, Gregory A., Delrot, Serge, Cookson, Sarah J.
Format Journal Article
LanguageEnglish
Published UK Oxford University Press 05.02.2019
Oxford University Press (OUP)
Subjects
abiotic stress
disease resistance
Environmental Sciences
EXPERT VIEW
fruit growing
Genotype
graft compatibility
growers
Life Sciences
phenotype
Plant Breeding
Plant Roots - genetics
rootstocks
scions
soil
soil-borne diseases
vegetables
Vegetal Biology
xylem
Graft compatibility
plasmodesmata
grafting
phloem
rootstock
scion
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ISSN0022-0957
1460-2431
1460-2431
DOI10.1093/jxb/ery422

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Summary:Grafting has been utilised for at least the past 7000 years. Historically, grafting has been developed by growers without particular interest beyond the agronomical and ornamental effects, and thus knowledge about grafting has remained largely empirical. Much of the commercial production of fruit, and increasingly vegetables, relies upon grafting with rootstocks to provide resistance to soil-borne pathogens and abiotic stresses as well as to influence scion growth and performance. Although there is considerable agronomic knowledge about the use and selection of rootstocks for many species, we know little of the molecular mechanisms underlying rootstock adaptation to different soil environments and rootstock-conferred modifications of scion phenotypes. Furthermore, the processes involved in the formation of the graft union and graft compatibility are poorly understood despite over a hundred years of scientific study. In this paper, we provide an overview of what is known about grafting and the mechanisms underlying rootstock–scion interactions. We highlight recent studies that have advanced our understanding of graft union formation and outline subjects that require further development.
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ISSN:0022-0957
1460-2431
1460-2431
DOI:10.1093/jxb/ery422