Journal ArticleDOI
Natural variation and genetic analysis of the tiller angle gene MsTAC1 in Miscanthus sinensis
Hua Zhao,Zexun Huai,Yingjie Xiao,Xiaohua Wang,Jiangyan Yu,Guangda Ding,Junhua Peng,Junhua Peng +7 more
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TLDR
Wang et al. as discussed by the authors investigated the nucleotide variation at this gene, MsTAC1, in 33 M. sinensis accessions collected from different areas in China, and one genotype of Miscanthus × giganteus.Abstract:
Biomass yield is an important target trait in Miscanthus breeding for desirable energy crops. Tiller angle is a key trait of plant architecture because it determines planting density and further influences biomass yield through affecting photosynthesis efficiency. TAC1, a major gene involved in tiller and leaf angle control in rice and maize, respectively, has been extensively studied. Nucleotide variation at this gene, MsTAC1, was investigated in 33 Miscanthus sinensis accessions collected from different areas in China, and one genotype of Miscanthus × giganteus. A total of 136 loci, including 129 single base substitutions and seven InDels, occurred within the MsTAC1 gene of 1,874 bp. The genetic diversity at MsTAC1 is characterized by high nucleotide diversity (π value) and high heterozygosity. Clustering analysis indicated that the phylogenetic tree of the 33 M. sinensis accessions was correlated with their geographical sites of origin. The neutrality test revealed no strong selection pressure on coding and non-coding region variations of the MsTAC1 gene in the accessions. Phenotype evaluations were conducted for tiller angle and five other traits in the Miscanthus panels in the first two growth years of 2009 and 2010. Analysis of variance showed significant phenotypic variations in the examined traits. Association analysis using 246 markers detected 88 loci associated with all the test traits in either 1 or 2 years, and 11 of the 88 were year reproducible and thus reliable. These associations indicate that the variation of MsTAC1 affects the phenotypic value of the tiller angle, tiller number and biomass yield, suggesting that allelic variation in MsTAC1 affects multiple traits and demonstrates its significance in Miscanthus breeding programs.read more
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Journal ArticleDOI
A Core Regulatory Pathway Controlling Rice Tiller Angle Mediated by the LAZY1-Dependent Asymmetric Distribution of Auxin.
Ning Zhang,Hong Yu,Hao Yu,Yueyue Cai,Linzhou Huang,Cao Xu,Guosheng Xiong,Xiangbing Meng,Jiyao Wang,Haofeng Chen,Guifu Liu,Yanhui Jing,Yundong Yuan,Yan Liang,Shujia Li,Steven M. Smith,Steven M. Smith,Jiayang Li,Yonghong Wang +18 more
TL;DR: Large-scale transcriptome analysis of rice shoots in response to gravistimulation revealed a core regulatory pathway controlling rice tiller angle mediated by the LAZY1-dependent asymmetric distribution of auxin and two new nodes of a shoot gravitropism regulatory gene network were identified.
Journal ArticleDOI
Branching out: new insights into the genetic regulation of shoot architecture in trees.
TL;DR: Recent discoveries on the regulation of shoot architectures for which causative genes have been identified are presented, including dwarf, weeping, columnar, and pillar growth habits.
Journal ArticleDOI
Identification of BnaYUCCA6 as a candidate gene for branch angle in Brassica napus by QTL-seq.
Hui Wang,Hongtao Cheng,Wenxiang Wang,Jia Liu,Mengyu Hao,Desheng Mei,Rijin Zhou,Li Fu,Qiong Hu +8 more
TL;DR: Results suggested BnaA0639380D is a possible candidate gene for branch angle in oilseed rape, which is a homolog of AtYUCCA6.
Journal ArticleDOI
Miscanthus : a case study for the utilization of natural genetic variation
TL;DR: Progress made in characterizing natural genetic variation in Miscanthus is outlined including next-generation single-nucleotide polymorphism genotyping, quantitative trait locus analysis and association mapping and how this knowledge is being used to develop novel genotypes suited for growth in a broad range of agricultural and marginal lands.
Journal ArticleDOI
Genome-Wide Association Mapping Reveals the Genetic Control Underlying Branch Angle in Rapeseed (Brassica napus L.)
Hongge Li,Hongge Li,Liping Zhang,Jihong Hu,Fugui Zhang,Biyun Chen,Kun Xu,Guizhen Gao,Hao Li,Tianyao Zhang,Zaiyun Li,Xiaoming Wu +11 more
TL;DR: The findings reveal the genetic control underlying branch angle in rapeseed and provide insight into genetic improvements that are possible in the plant architecture of rapeseed.
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