Welcome To Website IAS

Hot news

Independence Award

- First Rank - Second Rank - Third Rank

Labour Award

- First Rank - Second Rank -Third Rank

National Award

 - Study on food stuff for animal(2005)

 - Study on rice breeding for export and domestic consumption(2005)


- Hybrid Maize by Single Cross V2002 (2003)

- Tomato Grafting to Manage Ralstonia Disease(2005)

- Cassava variety KM140(2010)

Website links
Vietnamese calendar
Visitors summary
 Curently online :  8
 Total visitors :  5452558

A Dominant Major Locus in Chromosome 9 of Rice (Oryza sativa L.) Confers Tolerance to 48 °C High Temperature at Seedling Stage
Tuesday, 2013/04/30 | 21:42:21

Journal of Heredity 2013:104(2):287–294

He Wei,  Jianping Liu, Ya Wang, Nongrong Huang, Xiaobo ZHang, LiangcHao Wang, JiWen ZHang, Jumin Tu, andXuHua ZHong

Institute of Crop Science, College of Agriculture and Biotechnology, Zhejiang University, Yuhangtang Road 388, Hangzhou

310058, China (Wei, Liu, Wang, Zhang, Wang, Zhang, and Tu); and Rice Research Institute, Guangdong Academy of

Agricultural Sciences, Dongyi Street No 3, Jinyin Road, Guanzhou 510640, China (Huang and Zhong).




In an earlier greenhouse screening, we identified a local indica cultivar HT54 tolerant to high temperature at both seedling and grain-filling stages. In this study, we develop an optimized procedure for fine assessment of this heat tolerance. The results indicated that HT54 seedlings could tolerate high temperature up to 48 °C for 79 h. The genetic analysis of F1and F2 off-spring derived from the cross between HT54 and HT13, a heat-sensitive breeding line, reveals that the heat tolerance of HT54 was controlled by a dominant major locus, which has been designated as OsHTAS(Oryza sativa heat tolerance at seedling stage). This locus was mapped on rice chromosome 9 within an interval of 420 kb between markers of InDel5 and RM7364. The determined candidate ZFPgene has been confirmed to be cosegregated with a single nucleotide polymorphism (SNP)


developed PCR-restriction fragment length polymorphism (RFLP) marker RBsp1407 in its promoter region. Another heat tolerance-associated SNP was identified in the first intron of its 5′-untranslated region. The existence of these SNPs thereby  indicated that the OsHTASlocus contains at least two alleles. We named the one from HT54 as OsHTASa and the one from HT13 as OsHTASb. Further dynamic expression analysis demonstrated that OsHTASa was actively responsive to 45 °C high temperature stress compared with the OsHTASb allele.


Key words:  cosegregation, gene mapping, OsHTAS, PCR-RFLP, RBsp1407


Back      Print      View: 3524

[ Other News ]___________________________________________________
  • Transgenic pig carrying green fluorescent proteasomes
  • Ammonia oxidation pathways and nitrifier denitrification are significant sources of N2O and NO under low oxygen availability
  • Genetic analysis and mapping of genes for resistance to multiple strains of Soybean mosaic virus in a single resistant soybean accession PI 96983
  • Genomic assay reveals tolerance of DNA damage by both translesion DNA synthesis and homology-dependent repair in mammalian cells
  • IRRI Scientists Develop Super Salt-tolerant Rice
  • A dominant major locus in chromosome 9 of rice (Oryza sativa L.) confers tolerance to 48°C high temperature at seedling stage.
  • Source-sink dynamics and proteomic reprogramming under elevated night temperature and their impact on rice yield and grain quality
  • Gene similarity networks provide tools for understanding eukaryote origins and evolution
  • Suppression of Arabidopsis protophloem differentiation and root meristem growth by CLE45 requires the receptor-like kinase BAM3
  • Bacillus subtilis biofilm induction by plant polysaccharides
  • Scientists Re-evaluate Nutrient Uptake of Modern Corn
  • Scientists Identify Proton Pathway in Photosynthesis
  • Scientists Find Way to Increase Phosphorus Content in Wheat
  • De novo next-generation sequencing, assembling and annotation of Arachis hypogaea L. Spanish botanical type whole plant transcriptome
  • Targeted linkage map densification to improve cell wall related QTL detection and interpretation in maize
  • Fine-mapping and molecular marker development for Pi56(t), a NBS-LRR gene conferring broad-spectrum resistance to Magnaporthe oryzae in rice
  • Genome-wide comparative diversity uncovers multiple targets of selection for improvement in hexaploid wheat landraces and cultivars
  • Smoke-derived karrikin perception by the α/β-hydrolase KAI2 from Arabidopsis
  • USDA Approves Testing of Pink Pineapple
  • Characterization and fine mapping of the rice premature senescence mutant ospse1


Designed & Powered by WEBSO CO.,LTD