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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An evolutionarily conserved gene, FUWA, plays a role in determining panicle architecture, grain shape and grain weight in rice
Jun Chen,He Gao,Xiaoming Zheng,Mingna Jin,Jianfeng Weng,Jin Ma,Yulong Ren,Kunneng Zhou,Qi Wang,Jie Wang,Jiulin Wang,Xin Zhang,Zhijun Cheng,Chuanyin Wu,Haiyang Wang,Jianmin Wan +15 more
TL;DR: It is shown that a chemically induced null mutation in an evolutionarily conserved gene, FUWA, alters multiple important agronomic traits in rice, including panicle architecture, grain shape and grain weight.
Journal ArticleDOI
Rapid Identification of Major QTLs Associated with Rice Grain Weight and Their Utilization
TL;DR: Quantitative trait locus (QTL) mapping for TGW, grain length, grain width, and grain thickness revealed one major QTL in the second hot-region and two other minor QTLs for grain weight, which are useful in pyramiding elite alleles for molecular breeding for improvement of rice yield.
Journal ArticleDOI
Identification of Novel SNP in Promoter Sequence of TaGW2-6A Associated with Grain Weight and Other Agronomic Traits in Wheat (Triticum aestivum L.).
Vandana Jaiswal,Vijay Gahlaut,Saloni Mathur,Priyanka Agarwal,Manoj Kumar Khandelwal,Jitendra P. Khurana,Akhilesh K. Tyagi,Harindra Singh Balyan,Pushpendra Kumar Gupta +8 more
TL;DR: Using as many as 207 Indian wheat genotypes, four SNPs including two novel SNPs (SNP-988 and SNP-494) in the promoter sequence of TaGW2-6A were identified and a user-friendly CAPS marker was developed to identify the desirable allele of causal SNP (SNPs) for use in marker-assisted selection for improvement of grain weight in wheat.
Journal ArticleDOI
Genome-wide association of yield traits in a nested association mapping population of barley reveals new gene diversity for future breeding.
Rajiv Sharma,Fulvia Draicchio,Hazel Bull,Paul Herzig,Andreas Maurer,Klaus Pillen,William T. B. Thomas,Andrew J. Flavell +7 more
TL;DR: Discovering QTL hotspots for yield-related grain traits in a population developed from 25 diverse wild barley lines reveals new opportunities for improving cultivated barley.
Journal ArticleDOI
Whole-Genome Analysis of Candidate genes Associated with Seed Size and Weight in Sorghum bicolor Reveals Signatures of Artificial Selection and Insights into Parallel Domestication in Cereal Crops.
Yongfu Tao,Emma S. Mace,Emma S. Mace,Shuaishuai Tai,Alan Cruickshank,Bradley C. Campbell,Xianrong Zhao,Erik van Oosterom,Ian D. Godwin,José Ramón Botella,David Jordan +10 more
TL;DR: Seed size candidate genes that exhibited differentially high expression levels in seed were found more likely to be under selection during domesticated, supporting the hypothesis that modification to seed size during domestication preferentially targeted genes for intrinsic seed size rather than genes associated with physiological factors involved in the carbohydrate supply and transport.
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.