Plant Biotechnology
Online ISSN : 1347-6114
Print ISSN : 1342-4580
ISSN-L : 1342-4580
A protocol for Agrobacterium-mediated transformation of Japanese cedar, Sugi (Cryptomeria japonica D. Don) using embryogenic tissue explants
Ken-ichi Konagaya Yoshihiko NanasatoToru Taniguchi
ジャーナル フリー

2020 年 37 巻 2 号 p. 147-156


Sugi (Cryptomeria japonica D. Don) is the most important afforestation coniferous tree in Japan. Coniferous trees normally have a long juvenile period and require a long cultivation time for breeding. Through a traditional breeding project that began in the 1950s, first generation plus trees with excellent traits were selected primarily from artificial forests and used as seedlings. Recently, the second generation plus trees obtained by crossing between plus trees have been selected. In light of this situation, the improvement of Sugi by a transgenic approach is effective in terms of shortening the breeding period compared with conventional crossing-dependent approaches. There are three key points to an efficient Agrobacterium-mediated transformation system: (1) establishment of explants with high regeneration ability, (2) optimal co-cultivation conditions for explants and Agrobacterium, and (3) efficient elimination of Agrobacterium. Here we describe a protocol for Agrobacterium-mediated transformation of Sugi that meets the above criteria using embryogenic tissues as explants isolated from immature seeds obtained by crossing.

© 2020 The Japanese Society for Plant Cell and Molecular Biology
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