2013
DOI: 10.1038/ng.2612
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Loss of function of the IAA-glucose hydrolase gene TGW6 enhances rice grain weight and increases yield

Abstract: Increases in the yield of rice, a staple crop for more than half of the global population, are imperative to support rapid population growth. Grain weight is a major determining factor of yield. Here, we report the cloning and functional analysis of THOUSAND-GRAIN WEIGHT 6 (TGW6), a gene from the Indian landrace rice Kasalath. TGW6 encodes a novel protein with indole-3-acetic acid (IAA)-glucose hydrolase activity. In sink organs, the Nipponbare tgw6 allele affects the timing of the transition from the syncytia… Show more

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Cited by 503 publications
(393 citation statements)
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“…This finding suggested that numerous rare alleles might not be captured in the core collection. In recent decades, many elite genes or alleles have been discovered from landraces and utilized in rice breeding, including the semi-dwarf genes (Monna et al, 2002;Sasaki et al, 2002), resistant/tolerant genes to diseases and pests, and genes for improving grain yield and quality (Fukuoka et al, 2009;Ishimaru et al, 2013). It is likely, therefore, that three minor groups of rice germplasm (aus, aromatic and rayada) that have a limited presence in Chinese germplasm may be important genetic resources for future rice genetics and breeding in China given their unique genetic and phenotypic characteristics (Glaszmann, 1987;Khush, 1997).…”
Section: Diversity and Differentiation Of Chinese Rice Cultivarsmentioning
confidence: 99%
“…This finding suggested that numerous rare alleles might not be captured in the core collection. In recent decades, many elite genes or alleles have been discovered from landraces and utilized in rice breeding, including the semi-dwarf genes (Monna et al, 2002;Sasaki et al, 2002), resistant/tolerant genes to diseases and pests, and genes for improving grain yield and quality (Fukuoka et al, 2009;Ishimaru et al, 2013). It is likely, therefore, that three minor groups of rice germplasm (aus, aromatic and rayada) that have a limited presence in Chinese germplasm may be important genetic resources for future rice genetics and breeding in China given their unique genetic and phenotypic characteristics (Glaszmann, 1987;Khush, 1997).…”
Section: Diversity and Differentiation Of Chinese Rice Cultivarsmentioning
confidence: 99%
“…Higher expression of these two genes contributed to larger grain size through their effects on the cell-cycle machinery. Additionally, the GIF1 gene encodes a cell-wall invertase required for carbon partitioning during early grain filling (Wang et al 2008), and TGW6 encodes an indole-3-acetic acid-glucose hydrolase affecting the transition from the syncytial to the cellular phase of the endosperm (Ishimaru et al 2013). GIF1 and TGW6 directly affect the endosperm size and consequently regulate grain size and weight.…”
mentioning
confidence: 99%
“…In recent years, substantial research progress has been made regarding genes associated with grain size, particularly research focused on GS3, qSW5, GW2, GS3, GS5, and TGW6 haplotypes (Weng et al, 2008;Fan et al, 2009;Takano-Kai et al, 2009;Mao et al, 2010;Li et al, 2011;Dixit et al, 2013;Ishimaru et al, 2013;Lu et al, 2013;Xu et al, 2015). Zhang et al (2012) found that only SNP1 in the qGL3 region in 94 germplasms (the same SNP that was found in TD70) contributed highly to grain length, whereas other polymorphic sites had no significant contributions to grain length.…”
Section: Haplotypes Of Genes Associated With Grain Sizementioning
confidence: 99%
“…Grain shape, as the major determinant of grain weight, is characterized by a combination of four parameters: grain length, grain width, grain thickness, and filling degree (Xing and Zhang, 2010;Huang et al, 2013;Ikeda et al, 2013;Zuo and Li, 2014). In recent years, several key genes that regulate grain shape were identified (Fan et al, 2006;Shomura et al, 2008;Weng et al, 2008;Li et al, 2011;Zhang et al, 2012;Ishimaru et al, 2013;Song et al, 2007Song et al, , 2015Wang et al, 2012Wang et al, , 2015a. For instance, qGL3/qGL3.1 is a newly identified QTL associated with grain length, which exhibited the highest logarithm of the odds value and the greatest phenotypic variation compared to other markers, and it also significantly contributed to grain thickness and grain width (Hu et al, 2012;Qi et al, 2012;Zhang et al, 2012).…”
Section: Introductionmentioning
confidence: 99%