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Auxin enhances grafting success in Carya cathayensis (Chinese hickory)
State Key Laboratory for Subtropical Silviculture, Zhejiang A and F University, Linan, China.
Laboratory of Fruit Quality Biology, Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Zhejiang University, Hangzhou, China.
State Key Laboratory for Subtropical Silviculture, Zhejiang A and F University, Linan, China.
State Key Laboratory for Subtropical Silviculture, Zhejiang A and F University, Linan, China.
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2018 (English)In: Planta, ISSN 0032-0935, E-ISSN 1432-2048, Vol. 247, no 3, p. 761-772Article in journal (Refereed) Published
Abstract [en]

Main conclusion

Application of auxin to root stock and scion increases the success rate of grafting in Chinese hickory.

The nuts of the Chinese hickory (Carya cathayensis) tree are considered both delicious and healthy. The popularity and high demand result is that the hickory nuts are of very high economical value for horticulture. This is particularly true for the Zhejiang province in eastern China where this tree is widely cultivated. However, there are several difficulties surrounding the hickory cultivation, such as for example long vegetative growth, tall trees, labour-intensive nut picking, and slow variety improvements. These complications form a great bottleneck in the expansion of the hickory industry. The development of an efficient grafting procedure could surpass at least some of these problems. In this study, we demonstrate that application of the auxin indole-3-acetic acid promotes the grafting process in hickory, whereas application of the auxin transport inhibitor 1-N-naphthylphthalamic acid inhibits the grafting process. Furthermore, we have identified hickory genes in the PINABCB, and AUX/LAX-families known to encode influx and efflux carriers in the polar transport of auxin. We show that increased expression of several of these genes, such as CcPIN1b and CcLAX3, is correlating with successful grafting.

Place, publisher, year, edition, pages
Springer, 2018. Vol. 247, no 3, p. 761-772
Keywords [en]
ABC transporter, LAX, Nut, Phloem, PIN, Polar auxin transport, Xylem
National Category
Plant Biotechnology
Identifiers
URN: urn:nbn:se:liu:diva-145403DOI: 10.1007/s00425-017-2824-3ISI: 000424888900016PubMedID: 29214445Scopus ID: 2-s2.0-85037087678OAI: oai:DiVA.org:liu-145403DiVA, id: diva2:1186511
Funder
Carl Tryggers foundation Available from: 2018-02-28 Created: 2018-02-28 Last updated: 2018-04-13Bibliographically approved

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