Journal
SCIENCE
Volume 369, Issue 6504, Pages 698-+Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.abc3710
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Funding
- Japan Society for the Promotion of Science [18KT0040, 18H03950, 19H05361, JP16H06280, 19H05364, 15H05959, 17H06172]
- Canon Foundation [R17-0070]
- Project of the NARO Bio-oriented Technology Research Advancement Institution (Research Program on Development of Innovative Technology) [28001A, 28001AB]
- Japan Science and Technology Agency [ERATO JPMJER1004, START15657559, PRESTO15665754]
- Grants-in-Aid for Scientific Research [19H05364, 18H03950, 18KT0040, 19H05361] Funding Source: KAKEN
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Plant grafting is conducted for fruit and vegetable propagation, whereby a piece of living tissue is attached to another through cell-cell adhesion. However, graft compatibility limits combinations to closely related species, and the mechanism is poorly understood. We found that Nicotiana is capable of graft adhesion with a diverse range of angiosperms. Comparative transcriptomic analyses on graft combinations indicated that a subclade of beta-1,4-glucanases secreted into the extracellular region facilitates cell wall reconstruction near the graft interface. Grafting was promoted by overexpression of the beta-1,4-glucanase. Using Nicotiana stem as an interscion, we produced tomato fruits on rootstocks from other plant families. These findings demonstrate that the process of cell -cell adhesion is a potential target to enhance plant grafting techniques.
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