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Title 

A MADS box gene homologous to AG is expressed in seedlings as well as in flowers of Ginseng

Authors 

Youn Sung KimHeang Soon LeeMi Hee LeeOok Joon YooJang Ryol Liu

Publisher 

Oxford University Press (OUP)

Issue Date 

1998

Citation 

Plant and Cell Physiology, vol. 39, no. 8, pp. 836-845

Keywords 

AgamousFlower developmentMADS boxPanax ginseng

Abstract 

To study the flower development of ginseng, a MADS box cDNA (GAG2) was isolated and characterized. A comparison of the deduced amino acid sequence of GAG2 with the sequences of other MADS box proteins showed higher amino acid identities with AG (71%) from Arabidopsis thaliana, which is specifically expressed in stamens and carpels of flowers than with AGL genes (30 to 60%), suggesting that GAG2 is a ginseng homologue of AG. However northern blot analysis showed that GAG2 was expressed in seedlings. As the ginseng plant grew, the expression of GAG2 was confined to flowers. In situ hybridization experiments showed that GAG2 transcripts accumulated in the three inner whorls of flowers and in the cells surrounding the developing embryo sac. Temporal and spatial differences between GAG2 expression and AG imply that GA G2 alone is not sufficient to determine the identities of sexual organs of ginseng flowers and has additional or unique functions which differ from those of AG.

ISSN 

0032-0781

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2017-04-19


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