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Article

Columnar growth phenotype in apple results from gibberellin deficiency by ectopic expression of a dioxygenase gene.

Tree physiology - 29 Aug 2020

Okada Kazuma, Wada Masato, Takebayashi Yumiko, Kojima Mikiko, Sakakibara Hitoshi, Nakayasu Masaru, Mizutani Masaharu, Nakajima Masatoshi, Moriya Shigeki, Shimizu Taku, Abe Kazuyuki

Abstract excerpt

The apple cultivar McIntosh Wijcik, which is a mutant of 'McIntosh', exhibits a columnar growth phenotype (short internodes, few lateral branches, many spurs, etc.) that is controlled by a dominant Co gene. The candidate gene (MdDOX-Co), encoding a 2-oxoglutarate-dependent dioxygenase, is located adjacent to an insertion mutation. Non-columnar apples express MdDOX-Co in the roots, whereas columnar apples express...

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PMID: 32333787
DOI: 10.1093/treephys/tpaa049

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