Journal ArticleDOI
Loss of function of the IAA-glucose hydrolase gene TGW6 enhances rice grain weight and increases yield
Ken Ishimaru,Naoki Hirotsu,Yuka Madoka,Naomi Murakami,Nao Hara,Haruko Onodera,Takayuki Kashiwagi,Kazuhiro Ujiie,Bun-ichi Shimizu,Atsuko Onishi,Hisashi Miyagawa,Etsuko Katoh +11 more
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TLDR
The cloning and functional analysis of THOUSAND-GRAIN WEIGHT 6 (TGW6), a gene from the Indian landrace rice Kasalath, suggest that TGW6 may be useful for further improvements in yield characteristics in most cultivars.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 syncytial to the cellular phase by controlling IAA supply and limiting cell number and grain length. Most notably, loss of function of the Kasalath allele enhances grain weight through pleiotropic effects on source organs and leads to significant yield increases. Our findings suggest that TGW6 may be useful for further improvements in yield characteristics in most cultivars.read more
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Identification of Grain Size-Related QTLs in Korean japonica Rice Using Genome Resequencing and High-Throughput Image Analysis
YunJin Shin,Yong-Jae Won,Chae-Young Lee,Kyeong-Seong Cheon,Hyoja Oh,Gang-Seob Lee,Jeong-Ho Baek,In Sun Yoon,Song Lim Kim,Young Soon Cha,Kyung-Hwan Kim,Hyeonso Ji +11 more
TL;DR: In this article , a recombinant inbred line population (n = 162) from a cross between Odae (large-grain) and Joun (small-grain), and measured six traits including the thousand-grain weights of unhulled and hulled seeds, grain area, grain length, grain width and grain length-to-width ratio using high-throughput image analysis at the F8 and F9 generations.
Journal ArticleDOI
Identification of Genomic Regions Controlling Chalkiness and Grain Characteristics in a Recombinant Inbred Line Rice Population Based on High-Throughput SNP Markers.
Yheni Dwiningsih,Anuj Kumar,Julie Thomas,Charles Ruiz,Jawaher Alkahtani,Abdulrahman Al-Hashimi,Andy Pereira +6 more
TL;DR: In this article, a recombinant inbred line (RIL) population from a japonica/indica cross based on high-throughput SNP markers was used to identify quantitative trait loci (QTLs) with higher resolution and to identify more accurate candidate genes.
Journal ArticleDOI
Molecular bases of rice grain size and quality for optimized productivity.
Journal ArticleDOI
Mapping of qTGW1.1, a Quantitative Trait Locus for 1000-Grain Weight in Rice (Oryza sativa L.)
TL;DR: The results indicate that the effects of minor QTLs could be steadily detected in a highly isogenic background and suggest that such QTLS could be utilized in the breeding of high-yielding rice varieties.
Journal ArticleDOI
A Genetic Resource for Rice Improvement: Introgression Library of Agronomic Traits for All AA Genome Oryza Species
Yu Zhong Zhang,Jiawu Zhou,Peng Xu,Jing Li,Xianneng Deng,Wei-Sheng Deng,Ying Yang,Yan-Ping Yu,Qiuhong Pu,Dayun Tao +9 more
TL;DR: In this article , 6,372 agronomic trait introgression lines (ILs) from all AA genome Oryza species were screened and raised based on the variations in agro-morphological traits by crossing 170 accessions of 7 AA genome species and 160 upland rice accessions, with three elite cultivars of O. sativa as the donor parents, and RD23 (an indica variety) as the recurrent parents, respectively.
References
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Validation of the general purpose Tripos 5.2 force field
TL;DR: In this paper, a molecular mechanics force field implemented in the Sybyl program is described along with a statistical evaluation of its efficiency on a variety of compounds by analysis of internal coordinates and thermodynamic barriers.
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Seed Banks and Molecular Maps: Unlocking Genetic Potential from the Wild
TL;DR: The tools of genome research may finally unleash the genetic potential of the authors' wild and cultivated germplasm resources for the benefit of society.