RRC ID 30996
Author Na X, Jian B, Yao W, Wu C, Hou W, Jiang B, Bi Y, Han T.
Title Cloning and functional analysis of the flowering gene GmSOC1-like, a putative SUPPRESSOR OF OVEREXPRESSION CO1/AGAMOUS-LIKE 20 (SOC1/AGL20) ortholog in soybean.
Journal Plant Cell Rep
Abstract KEY MESSAGE:The major insight in this manuscript is that we identified a new flowering regulator, GmSOC1-like, which may participate in the initiation and maintenance of flowering in soybean. Flowering is pivotal for the reproductive behavior of plants, and it is regulated by complex and coordinated genetic networks that are fine-tuned by endogenous cues and environmental signals. To better understand the molecular basis of flowering regulation in soybean, we isolated GmSOC1 and GmSOC1-like, two putative soybean orthologs for the Arabidopsis SUPPRESSOR OF OVEREXPRESSION OF CO1/AGAMOUS-LIKE 20 (SOC1/AGL20). The expression pattern of GmSOC1-like was analyzed by qRT-PCR in Zigongdongdou, a photoperiod-sensitive soybean cultivar. GmSOC1-like was widely expressed at different levels in most organs of the soybean, with the highest expression in the shoot apex during the early stage of floral transition. In addition, its expression showed a circadian rhythm pattern, with the highest expression at midnight under short-day (SD) condition. Intriguingly, GmSOC1-like was induced 4 days earlier than GmSOC1 during flowering transition in SD, suggesting that GmSOC1 and GmSOC1-like expression might be differentially regulated. However, under long-day (LD) condition, the expression of GmSOC1 and GmSOC1-like decreased gradually in the shoot apex of Zigongdongdou, which is in accordance with the fact that Zigongdongdou maintains vegetative growth in LD. In addition, overexpression of GmSOC1-like stimulated the flowering of Lotus corniculatus cv. supperroot plants. In conclusion, the results of this study indicate that GmSOC1-like may act as a flowering inducer in soybean.
Volume 32(8)
Pages 1219-29
Published 2013-8-1
DOI 10.1007/s00299-013-1419-0
PMID 23636663
MeSH Amino Acid Sequence Base Sequence Circadian Rhythm / genetics Cloning, Molecular Flowers / genetics* Flowers / physiology* Gene Expression Profiling Gene Expression Regulation, Developmental Gene Expression Regulation, Plant Genes, Plant / genetics* MADS Domain Proteins / chemistry MADS Domain Proteins / genetics MADS Domain Proteins / metabolism Models, Molecular Molecular Sequence Data Photoperiod Plant Proteins / chemistry Plant Proteins / genetics* Plant Proteins / metabolism Plant Shoots / genetics Plant Shoots / growth & development Plants, Genetically Modified Protein Transport Sequence Homology, Amino Acid* Soybeans / genetics* Soybeans / growth & development Subcellular Fractions / metabolism
IF 3.499
Times Cited 19
Lotus / Glycine Super Root