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Title 

Growth and tuberization of transgenic potato plants expressing sense and antisense sequences of Cu/Zn superoxide dismutase from lily chloroplasts

Authors 

Mi Sun KimHyun Soon KimH N KimYoon Shik KimK H BaekY I ParkHyouk JoungJae Heung Jeon

Publisher 

The Botanical Society of Korea

Issue Date 

2007

Citation 

Journal of Plant Biology, vol. 50, no. 4, pp. 490-495

Keywords 

antisenseCu/Zn superoxide dismutasegibberellinsensesolanum tuberosumtuberization

Abstract 

Overexpression of a chloroplast-localized Cu/Zn superoxide dismutase (chCu/ZnSOD) obtained from lily significantly affects the growth and shape of potato tubers from an in vitro culture system (Kim et al., 2007). Here, we further characterized the sense and antisense transgenic potatoes grown and pots and the greenhouse to investigate the potential for more practical field applications of such phenotypic manipulations. Under in vitro conditions, antisense transgenic plants showed increased shoot growth, delayed tuberization, and altered tuber shapes. When antisense plants were treated with paclobutrazol, an inhibitor of GA biosynthesis, tuberization efficiency and tuber shape were recovered to a status very similar to that of in vitro-grown wild-type plants. Our results strongly support the idea that potato tuberization and shape is mediated by SOD-catalyzed reactive oxygen species, possibly via the GA biosynthesis pathway.

ISSN 

1226-9239

Link 

http://dx.doi.org/10.1007/BF03030688

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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