Journal ArticleDOI
Control of tillering in rice
Xueyong Li,Qian Qian,Zhiming Fu,Yonghong Wang,Guosheng Xiong,Dali Zeng,Xiaoqun Wang,Xinfang Liu,Sheng Teng,Fujimoto Hiroshi,Ming Yuan,Da Luo,Bin Han,Jiayang Li +13 more
TLDR
The isolation and characterization of MONOCULM 1 (MOC1), a gene that is important in the control of rice tillering, is reported, which encodes a putative GRAS family nuclear protein that is expressed mainly in the axillary bud and functions to initiate axillary buds and to promote their outgrowth.Abstract:
Tillering in rice (Oryza sativa L.) is an important agronomic trait for grain production, and also a model system for the study of branching in monocotyledonous plants. Rice tiller is a specialized grain-bearing branch that is formed on the unelongated basal internode and grows independently of the mother stem (culm) by means of its own adventitious roots. Rice tillering occurs in a two-stage process: the formation of an axillary bud at each leaf axil and its subsequent outgrowth. Although the morphology and histology and some mutants of rice tillering have been well described, the molecular mechanism of rice tillering remains to be elucidated. Here we report the isolation and characterization of MONOCULM 1 (MOC1), a gene that is important in the control of rice tillering. The moc1 mutant plants have only a main culm without any tillers owing to a defect in the formation of tiller buds. MOC1 encodes a putative GRAS family nuclear protein that is expressed mainly in the axillary buds and functions to initiate axillary buds and to promote their outgrowth.read more
Citations
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Journal ArticleDOI
Natural variation in Ghd7 is an important regulator of heading date and yield potential in rice
Weiya Xue,Yongzhong Xing,Xiaoyu Weng,Yu Zhao,Weijiang Tang,Lei Wang,Hongju Zhou,Sibin Yu,Caiguo Xu,Xianghua Li,Qifa Zhang +10 more
TL;DR: It is shown that the quantitative trait locus (QTL) Ghd7, isolated from an elite rice hybrid and encoding a CCT domain protein, has major effects on an array of traits in rice, including number of grains per panicle, plant height and heading date.
Journal ArticleDOI
Genome-wide association mapping reveals a rich genetic architecture of complex traits in Oryza sativa
Keyan Zhao,Chih-Wei Tung,Georgia C. Eizenga,Mark Wright,M. Liakat Ali,Adam H. Price,Gareth J. Norton,S. M. Rafiqul Islam,Andrew R. Reynolds,Jason G. Mezey,Anna M. McClung,Carlos Bustamante,Carlos Bustamante,Susan R. McCouch +13 more
TL;DR: This work establishes an open-source translational research platform for genome-wide association studies in rice that directly links molecular variation in genes and metabolic pathways with the germplasm resources needed to accelerate varietal development and crop improvement.
Journal ArticleDOI
Natural variation at the DEP1 locus enhances grain yield in rice
Xianzhong Huang,Qian Qian,Zhengbin Liu,Hongying Sun,Shuyuan He,Da Luo,Guangmin Xia,Chengcai Chu,Jiayang Li,Xiangdong Fu +9 more
TL;DR: The molecular characterization of a major rice grain yield QTL that acts through the determination of panicle architecture is reported and it is shown that a functionally equivalent allele is present in the temperate cereals and seems to have arisen before the divergence of the wheat and barley lineages.
Journal ArticleDOI
Natural variation in GS5 plays an important role in regulating grain size and yield in rice
Yibo Li,Chuchuan Fan,Yongzhong Xing,Yunhe Jiang,Lijun Luo,Liang Sun,Di Shao,Chunjue Xu,Xianghua Li,Jinghua Xiao,Yuqing He,Qifa Zhang +11 more
TL;DR: It is shown that the quantitative trait locus GS5 in rice controls grain size by regulating grain width, filling and weight and functions as a positive regulator of grain size, such that higher expression of GS5 is correlated with larger grain size.
Journal ArticleDOI
Strategies for developing Green Super Rice.
TL;DR: Large efforts have been focused on identifying germplasms and discovering genes for resistance to diseases and insects, N- and P-use efficiency, drought resistance, grain quality, and yield, and it is anticipated that such strategies and efforts would eventually lead to the development of Green Super Rice.
References
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Journal ArticleDOI
Efficient transformation of rice (Oryza sativa L.) mediated by Agrobacterium and sequence analysis of the boundaries of the T-DNA.
TL;DR: A large number of morphologically normal, fertile, transgenic rice plants were obtained by co-cultivation of rice tissues with Agrobacterium tumefaciens, and sequence analysis revealed that the boundaries of the T-DNA in transgenic Rice plants were essentially identical to those intransgenic dicotyledons.
Journal ArticleDOI
‘Green revolution’ genes encode mutant gibberellin response modulators
Jinrong Peng,Donald Ernest Richards,Nigel M. Hartley,George Murphy,Katrien M. Devos,John E. Flintham,James Beales,L. J. Fish,A. J. Worland,Fatima Pelica,Duraialagaraja Sudhakar,Paul Christou,John W. Snape,Michael D. Gale,Nicholas P. Harberd +14 more
TL;DR: It is shown that Rht-B1/Rht-D1 and maize dwarf-8 (d8), are orthologues of the Arabidopsis Gibberellin Insensitive (GAI) gene, which encode proteins that resemble nuclear transcription factors and contain an SH2-like domain, indicating that phosphotyrosine may participate in gibberelli signalling.
Journal ArticleDOI
The evolution of apical dominance in maize
TL;DR: The cloned teosinte branched1 (tb1) gene encodes a protein with homology to the cycloidea gene of snapdragon and suggests that tb1 acts both to repress the growth of axillary organs and to enable the formation of female inflorescences.
Journal ArticleDOI
The Arabidopsis GAI gene defines a signaling pathway that negatively regulates gibberellin responses
Jinrong Peng,Pierre Carol,Donald Ernest Richards,Kathryn E. King,Rachel J. Cowling,George Murphy,Nicholas P. Harberd +6 more
TL;DR: The molecular cloning ofGAI and a closely related gene GRS is reported, indicating the involvement of GAI, SPY, and GAR2 in a signaling pathway that regulates GA responses negatively and suggests that GA modulates plant growth through derepression rather than through simple stimulation.
Journal ArticleDOI
The SCARECROW Gene Regulates an Asymmetric Cell Division That Is Essential for Generating the Radial Organization of the Arabidopsis Root
Laura Di Laurenzio,Joanna Wysocka-Diller,Jocelyn E. Malamy,Leonard Pysh,Yrjö Helariutta,Glenn Freshour,Michael G. Hahn,Kenneth A. Feldmann,Philip N. Benfey +8 more
TL;DR: A key role for SCR is indicated in regulating the radial organization of the root in the Arabidopsis root meristem thanks to the deduced amino acid sequence of SCARECROW.