Article
Agriculture, Multidisciplinary
Yu Xiao-qi, Xie Wei, Liu He, Liu Wei, Zeng Da-li, Qian Qian, Ren De-yong
Summary: Moderate leaf rolling can increase rice yield by maintaining leaf erectness and improving light transmittance. The study identified a novel leaf-rolling-related gene, SRL3, which affects plant height, seed-setting rate, and tiller number.
JOURNAL OF INTEGRATIVE AGRICULTURE
(2022)
Article
Agronomy
Yaoming Feng, Jintao Tang, Ruiying Liu, Yao-Guang Liu, Letian Chen, Yongyao Xie
Summary: We identified and fine-mapped S58, a selfish genetic locus from Asian rice that causes hybrid male sterility in crosses between Asian and African cultivated rice. Additionally, we found a natural neutral allele in Asian rice lines that can overcome S58-mediated hybrid sterility.
THEORETICAL AND APPLIED GENETICS
(2023)
Article
Plant Sciences
Peng Cheng, Ling-Jie Cao, Chen Bai, Motoyuki Ashikari, Xian-Jun Song
Summary: Two novel QTLs for early seedling growth in rice were fine mapped in this study, with one identical to the known GW6a gene and the other containing six candidate genes. Both genetic factors were shown to be positive regulators, mainly affecting genetic effects through alterations in cell division.
Article
Agriculture, Multidisciplinary
Ni Jin-long, Wang De-zheng, Ni Da-hu, Song Feng-shun, Yang Jian-bo, Yao Da-nian
Summary: The discovery and application of environment-sensitive genic male sterile (EGMS) rice germplasm have greatly contributed to hybrid rice production. In this study, a reverse TGMS (rTGMS) line, YnS, was found to be sterile under low temperature and fertile under high temperature. A genetic study identified the RTMS10 locus controlling the rTGMS trait in YnS. The findings provide insights for molecular breeding of rTGMS lines and understanding the rTGMS trait in rice.
JOURNAL OF INTEGRATIVE AGRICULTURE
(2022)
Article
Agronomy
Bian Wu, Duo Xia, Hao Zhou, Shiyuan Cheng, Yipei Wang, Minqi Li, Guanjun Gao, Qinglu Zhang, Xianghua Li, Yuqing He
Summary: Chalkiness in rice, a highly undesirable trait for breeding and marketing, is determined by the white-core rate (WCR) which was genetically validated and fine mapped in this study. The synthesis and accumulation of metabolites play a key role in chalkiness formation, with starch and storage protein being closely related to the white-core trait. These findings lay the foundation for map-based cloning of qWCR7, which may have potential value in quality improvement during rice breeding.
MOLECULAR BREEDING
(2021)
Article
Biochemistry & Molecular Biology
Luomiao Yang, Peng Li, Jingguo Wang, Hualong Liu, Hongliang Zheng, Wei Xin, Detang Zou
Summary: In this study, the major genes controlling the inheritance of grain length (GL) in japonica rice were investigated. A new major QTL called qGL9.1 was identified on chromosome 9, which is associated with GL. Further analysis revealed a 93-kb core region on qGL9.1 encoding 15 protein-coding genes. The expression level of LOC_Os09g26970 was significantly different between the two parents at different stages of grain development. This study identified LOC_Os09g26970 as a novel gene associated with GL in japonica rice, providing important insights for future research and improvement of GL in rice varieties.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Multidisciplinary Sciences
Seung Young Lee, Zhuo Jin, Su Jang, Backki Kim, Jeonghwan Seo, Hee-Jong Koh
Summary: This study investigates cytoplasmic male sterility in rice, identifying tissue-specific abnormalities in anthers and suggesting that the functional Rf gene may be derived from allelic variation between inter-subspecies.
Article
Plant Sciences
Wei Xie, Wei Liu, Xiaoqi Yu, Dali Zeng, Deyong Ren
Summary: This study discovered a specific mr1 mutant with a reduced hull. Phenotype observations and molecular evidence demonstrated that the floral organ bop transformed into an organ resembling mrp. The research also revealed the evolutionary relationship between the hull and lemma.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Agricultural Engineering
Shengtao Fang, Jinbo Yao, Yan Li, Shouhong Zhu, Jingwen Pan, Qiulin Li, Weiran Wang, Jie Kong, Liangrong He, Yongshan Zhang, Wei Chen
Summary: This study identified a major recessive gene, cr, controlling plant height in cotton. The molecular mechanism and phenotypic effects of this gene were investigated. The findings provide important insights for improving cotton plant architecture and yield, as well as understanding the genetic basis of the cr trait.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Agronomy
Tengkui Chen, Lixin Luo, Zhe Zhao, Hui Wang, Chun Chen, Yongzhu Liu, Xinchang Li, Tao Guo, Wuming Xiao
Summary: Grain size affects rice yield and quality. This study constructed a near-isogenic line LB3 with long grain size and identified a major QTL, qGL10, located on chromosome 10, for grain length. Candidate gene analysis suggested LOC_Os10g39130 (OsMADS56). Sequence comparison revealed SNPs in the promoter and coding regions of OsMADS56 in 02428 and LB3. Haplotype analysis indicated that the SNP9 (G/A) in the TGTCACA motif may contribute to the differential expression of OsMADS56. These findings provide a foundation for the molecular breeding of new rice varieties using qGL10.
Article
Agronomy
Huan Shi, Yun Zhu, Peng Yun, Guangming Lou, Lu Wang, Yipei Wang, Guanjun Gao, Qinglu Zhang, Xianghua Li, Yuqing He
Summary: In this study, the qWCR4 gene was confirmed to affect rice chalkiness, and other traits related to WCR were also identified. This provides new genetic resources for rice yield and quality breeding.
Article
Plant Sciences
Tengkui Chen, Wuming Xiao, Cuihong Huang, Danhua Zhou, Yongzhu Liu, Tao Guo, Zhiqiang Chen, Hui Wang
Summary: The architecture of rice plant has a significant impact on its yield. Strigolactones (SLs) are newly discovered plant hormones derived from carotenoids that play an important role in rice plant architecture. A high-tillering dwarf mutant, CHA-1, was identified through spatial mutagenesis and found to be located on chromosome 1. The candidate gene LOC_Os01g54810, encoding a putative member of Class III lipase, was confirmed to be CHA-1 through genetic complementation experiments. CHA-1 influences rice architecture by affecting SL biosynthesis, as shown by downregulated expression of genes and reduced concentration of epi-5DS in the mutant.
Article
Plant Sciences
Xin Li, Fujiang Xiang, Wei Zhang, Jindong Yan, Xinmei Li, Ming Zhong, Piao Yang, Caiyan Chen, Xuanming Liu, Donghai Mao, Xiaoying Zhao
Summary: In this study, a dwarf mutant of rapeseed named bnd2 was isolated using EMS mutagenesis. The mutant exhibited reduced plant height and was found to be a recessive mutation of a single locus. Through fine mapping, the candidate gene BnaA08g20960D was identified in a 140-Kb interval, potentially useful for breeding lodging resistant and high yield rapeseed.
Article
Plant Sciences
Amar Kant Kushwaha, Ranjith Kumar Ellur, Sarvesh Kumar Maurya, Gopala S. Krishnan, Bishnu Maya Bashyal, Prolay Kumar Bhowmick, K. K. Vinod, Haritha Bollinedi, Nagendra Kumar Singh, Ashok Kumar Singh
Summary: Through fine mapping and gene expression analysis, researchers have identified the key gene locus qBK1.2 for bakanae resistance in rice, as well as candidate genes related to defense. These findings contribute to marker-assisted breeding to enhance rice resistance against Fusarium fujikuroi.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Agronomy
Chenwei Deng, Yingxin Zhang, Beifang Wang, Hong Wang, Pao Xue, Yongrun Cao, Lianping Sun, Shihua Cheng, Liyong Cao, Daibo Chen
Summary: In this study, a novel drought-sensitive mutant named dsm3 was identified in rice and the recessive gene Osdsm3 responsible for the withered leaf tip phenotype was cloned and characterized. The mutation in the candidate gene LOC_Os01g10680 was found to lead to premature translation termination. Furthermore, high expression of OsDSM3 in certain tissues and upregulation of drought-stress-related genes under drought conditions were observed. The discovery of Osdsm3 holds promise for further investigation into the molecular mechanisms underlying rice drought resistance.