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Overexpression of the GmGAL2 Gene Accelerates Flowering in Arabidopsis

2010; Springer Science+Business Media; Volume: 28; Issue: 4 Linguagem: Inglês

10.1007/s11105-010-0201-5

1572-9818

Jiaohui Xü, Xiaofang Zhong, Qingzhu Zhang, Hongyu Li,

Soybean genetics and cultivation

A soybean MADS box gene GmGAL2 (Glycine max AGAMOUS Like 2), a homolog of AGL11/STK, was investigated in transgenic Arabidopsis lines. Ectopic expression of GmGAL2 in Arabidopsis enhanced flowering, under both long-day and short-day conditions, by promoting expression of key flowering genes, CONSTANS (CO) and FLOWERING LOCUS T (FT), and lowering expression of floral inhibiter FLOWERING LOCUS C (FLC). Moreover, frequency of silique pod set was also lower in transgenic compared to control Arabidopsis plants. RT-PCR results revealed that GmGAL2 was primarily expressed in the flowers and pods of soybean plants, GmGAL2 expressed higher in SD than LD in soybean.