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2017 ; 4
(1
): 3-14
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Plant grafting: insights into tissue regeneration
#MMPMID28316790
Melnyk CW
Regeneration (Oxf)
2017[Feb]; 4
(1
): 3-14
PMID28316790
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For millennia, people have cut and joined different plants together through a
process known as grafting. The severed tissues adhere, the cells divide and the
vasculature differentiates through a remarkable process of regeneration between
two genetically distinct organisms as they become one. Grafting is becoming
increasingly important in horticulture where it provides an efficient means for
asexual propagation. Grafting also combines desirable roots and shoots to
generate chimeras that are more vigorous, more pathogen resistant and more
abiotic stress resistant. Thus, it presents an elegant and efficient way to
improve plant productivity in vegetables and trees using traditional techniques.
Despite this horticultural importance, we are only beginning to understand how
plants regenerate tissues at the graft junction. By understanding grafting
better, we can shed light on fundamental regeneration pathways and the basis for
self/non-self recognition. We can also better understand why many plants
efficiently graft whereas others cannot, with the goal of improving grafting so
as to broaden the range of grafted plants to create even more desirable chimeras.
Here, I review the latest findings describing how plants graft and provide
insight into future directions in this emerging field.
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