Chinese Bulletin of Botany ›› 2017, Vol. 52 ›› Issue (4): 389-393.doi: 10.11983/CBB17110

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The Genetic Basis of Soybean Extended to Tropical Regions

Yan Li, Junyi Gai*   

  1. National Center for Soybean Improvement/MOA Key Laboratory for Biology and Genetic Improvement of Soybean (General)/ National Key Laboratory of Crop Genetics and Germplasm Enhancement/Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing 210095, China
  • Received:2017-06-01 Accepted:2017-06-06 Online:2017-05-05 Published:2017-07-01
  • Contact: Gai Junyi
  • About author:

    # Co-first authors


Soybean (Glycine max) is a plant sensitive to photoperiod, which determines its maturity date and therefore its adaptation to respective eco-regions. The soybean varieties from temperate regions flower and mature very early in tropical regions (short photoperiod), which leads to low yields and limits the commercial cultivation of soybean in these regions. The discovery of long-juvenile (LJ) soybean varieties is a major breakthrough to overcome this problem. Under short photoperiod, the LJ soybean varieties show delayed flowering and maturity time, enhanced growth and therefore, higher yields than temperate varieties. Previous studies found that locus J had a major contribution to the LJ trait. Recently, Chinese scientists cloned the J gene by fine-mapping and found it as an ortholog of Arabidopsis thaliana EARLY FLOWERING 3 (ELF3). The functions of J gene were confirmed by transgenic complementation and near-isogenic lines: the j genotype showed later flowering and maturity date and more yield potential than the J genotype. Further studies showed that the J protein bound to the promoter of the E1 gene (a legume-specific flowering repressor) to downregulate E1 expression, thereby relieving the suppression of E1 on soybean FLOWERING LOCUS T (FT) genes, which leads to early flowering under short photoperiod. In addition, multiple j alleles and haplotypes were identified from soybean germplasm. The study leads to a new direction in genetic research of growth periods for the expansion of soybean to tropical regions.

[1] Bernard R (1971). Two major genes for time of flowering and maturity in soybeans.Crop Sci 11, 242-244.
[2] Bonato ER, Vello NA (1999). E-6, a dominant gene condi- tioning early flowering and maturity in soybeans.Genet Mol Biol 22, 229-232.
[3] Buzzell R (1971). Inheritance of a soybean flowering res- ponse to fluorescent-daylength conditions.Can J Genet Cytol 13, 703-707.
[4] Buzzell R, Voldeng H (1980). Inheritance of insensitivity to long daylength.Soyb Genet Newsl 7, 26-29.
[5] Cao D, Takeshima R, Zhao C, Liu BH, Jun A, Kong FJ (2017). Molecular bases of flowering under long days and stem growth habit in soybean.J Exp Bot 68, 1873-1884.
[6] Carpentieri-Pipoplo V, Almeida LAD, Kiihl RAS (2002). Inheritance of a long juvenile period under short-day con- ditions in soybean.Genet Mol Biol 25, 463-469.
[7] Cober ER (2011). Long juvenile soybean flowering respon- ses under very short photoperiods.Crop Sci 51, 140-145.
[8] Cober ER, Molnar SJ, Charette M, Voldeng HD (2010). A new locus for early maturity in soybean.Crop Sci 50, 524-527.
[9] Cober ER, Voldeng HD (2001). A new soybean maturity and photoperiod-sensitivity locus linked toE1 and T. Crop Sci 41, 698-701.
[10] Destro D, Carpentieri-Pipolo V, Kiihl RAS, Almeida LA (2001). Photoperiodism and genetic control of the long juvenile period in soybean: a review.Crop Breed Appl Bio- technol 1, 72-92.
[11] Hartwig EE, Kiihl RAS (1979). Identification and utilization of a delayed flowering character in soybeans for short-day conditions.Field Crops Res 2, 145-151.
[12] Kong FJ, Liu BH, Xia ZJ, Sato S, Kim BM, Watanabe S, Yamada T, Tabata S, Kanazawa A, Harada K, Abe J (2010). Two coordinately regulated homologs ofFLOW- ERING LOCUS T are involved in the control of photo- periodic flowering in soybean. Plant Physiol 154, 1220-1231.
[13] Kong FJ, Nan HY, Cao D, Li Y, Wu FF, Wang JL, Lu SJ, Yuan XH, Cober ER, Abe J, Liu BH (2014). A new dominant geneE9 conditions early flowering and maturity in soybean. Crop Sci 54, 2529-2535.
[14] Li YH, Guan RX, Liu ZX, Ma YS, Wang LX, Li LH, Lin FY, Luan WJ, Chen PY, Yan Z, Guan Y, Zhu L, Ning XC, Smulders MJM, Li W, Piao RH, Cui YH, Yu ZM, Guan M, Chang RZ, Hou AF, Shi AN, Zhang B, Zhu SL, Qiu LJ (2008). Genetic structure and diversity of cultivated soy- bean (Glycine max(L.) Merr.) landraces in China. Theor Appl Genet 117, 857-871.
[15] Liu B, Kanazawa A, Matsumura H, Takahashi R, Harada K, Abe J (2008). Genetic redundancy in soybean photo- responses associated with duplication of the phytochrome A gene.Genetics 180, 995-1007.
[16] Lu SJ, Zhao XH, Hu YL, Liu SL, Nan HY, Li XM, Fang C, Cao D, Shi XY, Kong LP, Su T, Zhang FG, Li SC, Wang Z, Yuan XH, Cober ER, Weller JL, Liu BH, Hou XL, Tian ZX, Kong FJ (2017). Natural variation at the soybean J locus improves adaptation to the tropics and enhances yield. Nat Genet 49, 773-779.
[17] Mcblain BA, Bernard RL (1987). A new gene affecting the time of flowering and maturity in soybeans.J Hered 78, 160-162.
[18] Neumaier N, James AT (1993). Exploiting the long-juvenile trait to improve adaptation of soybeans to the tropics.Food Legume Newsl 8, 12-14.
[19] Ray JD, Hinson K, Mankono JEB, Malo MF (1995). Gene- tic-control of a long-juvenile trait in soybean.Crop Sci 35, 1001-1006.
[20] Samanfar B, Molnar SJ, Charette M, Schoenrock A, De- hne F, Golshani A, Belzile F, Cober ER (2017). Mapping and identification of a potential candidate gene for a novel maturity locus,E10, in soybean. Theor Appl Genet 130, 377-390.
[21] Sinclair TR, Hinson K (1992). Soybean flowering in respon- se to the long-juvenile trait.Crop Sci 32, 1242-1248.
[22] Spehar CR (1995). Impact of strategic genes in soybean on agricultural development in the Brazilian tropical savan- nah.Field Crops Res 41, 141-146.
[23] Watanabe S, Harada K, Abe J (2011a). Genetic and mo- lecular bases of photoperiod responses of flowering in soy- bean.Breed Sci 61, 531-543.
[24] Watanabe S, Hideshima R, Xia ZJ, Tsubokura Y, Sato S, Nakamoto Y, Yamanaka N, Takahashi R, Ishimoto M, Anai T, Tabata S, Harada K (2009). Map-based clon- ing of the gene associated with the soybean maturity locusE3. Genetics 182, 1251-1262.
[25] Watanabe S, Xia ZJ, Hideshima R, Tsubokura Y, Sato S, Yamanaka N, Takahashi R, Anai T, Tabata S, Kita- mura K, Harada K (2011b). A map-based cloning strategy employing a residual heterozygous line reveals that theGIGANTEA gene is involved in soybean maturity and flow- ering. Genetics 188, 395-U260.
[26] Wilson RF (2008). Soybean: Market Driven Research Needs in Genetics and Genomics of Soybean. New York: Sprin- ger-Verlag.
[27] Xia ZJ, Watanabe S, Yamada T, Tsubokura Y, Nakashi- ma H, Zhai H, Anai T, Sato S, Yamazaki T, Lu SX, Wu HY, Tabata S, Harada K (2012a). Positional cloning and characterization reveal the molecular basis for soybean maturity locus E1 that regulates photoperiodic flowering. Proc Natl Acad Sci USA 109, E2155-E2164.
[28] Xia ZJ, Zhai H, Liu BH, Kong FJ, Yuan XH, Wu HY, Cober ER, Harada K (2012b). Molecular identification of genes controlling flowering time, maturity, and photoperiod res- ponse in soybean.Plant Syst Evol 298, 1217-1227.
[29] Zhao C, Takeshima R, Zhu JH, Xu ML, Sato M, Watanabe S, Kanazawa A, Liu BH, Kong FJ, Yamada T, Abe J (2016). A recessive allele for delayed flowering at the soybean maturity locus E9 is a leaky allele of FT2a, a FLOWERING LOCUS T ortholog. BMC Plant Biol 16, 20.
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[1] Zhu Chen;Liu Fei-yan and Zeng Guang-wen. Effects of 4PU on the Senescence of Detached Radish Cotyledons[J]. Chinese Bulletin of Botany, 1997, 14(04): 42 -44 .
[2] FU Hong CHI Zhe-Ru① CHANG Jie FU Cheng-Xin. Extraction of Leaf Vein Features Based on Artificial Neural Network — Studies on the Living Plant Identification Ⅰ[J]. Chinese Bulletin of Botany, 2004, 21(04): 429 -436 .
[3] Hongyan Li;Qingsong Zheng;Zhaopu Liu*;Qing Li. Effects of Various Concentration of Seawater on the Growth and Physiological Characteristics of Lactuca indica Seedlings[J]. Chinese Bulletin of Botany, 2010, 45(01): 73 -78 .
[4] . [J]. Chinese Bulletin of Botany, 1994, 11(专辑): 10 .
[5] YANG Jia-Ju YI Tie-Mei ZHAO Cai-yun. Nomenclature and Identification of Gymnosperm Fossil Woods in China[J]. Chinese Bulletin of Botany, 2000, 17(专辑): 117 -129 .
[6] Yan Liu, Lijing Xing, Junhua Li, Shaojun Dai. Rice B-box Zinc Finger Protein OsBBX25 is Involved in the Abiotic Response[J]. Chinese Bulletin of Botany, 2012, 47(4): 366 -378 .
[7] Qiaoling Zhu, Jiayi Leng, Qingsheng Ye. Photosynthetic Characteristics of Dendrobium williamsonii and D. longicornu[J]. Chinese Bulletin of Botany, 2013, 48(2): 151 -159 .
[8] . [J]. Chin J Plan Ecolo, 1963, (1): 110 -130 .
[9] Fan Zheng, Hu Shizhi. Report of the 1st National Scientific and Working Conference on the Classification, Regionalization and Mapping of Vegetation[J]. Chin J Plan Ecolo, 1981, 5(2): 147 -148 .