Developing tools for investigating the multiple roles of ethylene: identification and mapping genes for ethylene biosynthesis and reception in barley

被引:8
作者
Dahleen, Lynn S. [1 ]
Tyagi, Neerja [2 ]
Bregitzer, Phil [3 ]
Brown, Ryan H. [3 ]
Morgan, William C. [1 ]
机构
[1] ARS, USDA, No Crop Sci Lab, Fargo, ND 58102 USA
[2] N Dakota State Univ, Dept Plant Sci, Fargo, ND 58105 USA
[3] ARS, USDA, Natl Small Grains Germplasm Res Facil, Aberdeen, ID 83210 USA
关键词
Hordeum vulgare; 1-aminocyclopropane-1-carboxylic acid synthase; ACC oxidase; High-resolution melt analysis; NUCLEOTIDE POLYMORPHISM MARKERS; QUANTITATIVE TRAIT LOCI; LINKAGE MAP; PLANT-REGENERATION; TISSUE-CULTURE; ARABIDOPSIS; RESISTANCE; RICE; DUPLICATION; GERMINATION;
D O I
10.1007/s00438-012-0716-6
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The plant hormone ethylene is important to many plant processes from germination through senescence, including responses to in vitro growth and plant regeneration. Knowledge of the number and function of genes that are involved in ethylene biosynthesis and reception is necessary to determine the role of specific genes within gene families known to influence ethylene biosynthesis and other aspects of ethylene function in plants. Our objective was built on previous studies that have established the critical role of ethylene in the in vitro response of barley (Hordeum vulgare L.), and that have identified ethylene-related QTL in the barley genome. In this study, we have identified the locations of genes in the barley 1-aminocyclopropane-1-carboxylic acid (ACC) synthase (ACS), ACC oxidase (ACO), and ethylene receptor (ETR) gene families. Specific primers for PCR amplification of each gene were developed and used to map these genes in the Oregon Wolf Barley mapping population. Five ACS, 8 ACO, and 7 ETR genes were identified and mapped to six of the barley chromosomes. Gene locations were syntenous to the orthologs in rice except for two that mapped to chromosome 6H. Gene duplication was evident for ACO genes on chromosomes 5H and 6H. Gene-specific primers will be useful for determining expression of each gene under various environmental conditions, including in vitro environments, to better understand the role of ethylene. Of the six known QTL for green plant regeneration in barley, three were located near the genes mapped in this study.
引用
收藏
页码:793 / 802
页数:10
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