A limited set of starch related genes explain several interrelated traits in potato

被引：42
作者：
Werij, Jeroen S. [1 ,2 ]
Furrer, Heleen [1 ,2 ]
van Eck, Herman J. [1 ,2 ]
Visser, Richard G. F. [1 ,2 ]
Bachem, Christian W. B. [1 ,2 ]
机构：
[1] Univ Wageningen & Res Ctr, Lab Plant Breeding, Grad Sch Expt Plant Sci, NL-6700 AJ Wageningen, Netherlands
[2] Ctr BioSyst Genom, Wageningen, Netherlands
来源：
EUPHYTICA | 2012年 / 186卷 / 02期
关键词：
Potato; Starch; QTL; Candidate gene; PHYSICOCHEMICAL PROPERTIES; DIPLOID POTATO; QUALITY TRAITS; ALPHA-GLUCAN; AMYLOSE-FREE; TUBER; INHIBITION; SYNTHASE; GRANULE; PROTEIN;
D O I：
10.1007/s10681-012-0651-y
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
To understand the molecular basis of potato starch related traits and the underlying starch biosynthesis and degradation, a Quantitative Trait Locus (QTL) analysis in combination with a candidate gene approach was performed. The diploid mapping population C x E, consisting of 249 individuals, was assayed over two consecutive years, for chipping colour, cold induced sweetening, starch content, starch granule size, starch gelling temperature, starch enthalpy, amylose content and degree of starch phosphorylation. QTLs were observed for all traits, except enthalpy on eight out of the twelve potato chromosomes. Several QTLs were found to be consistent over 2 years. Clustering of co-localizing QTLs was observed on some chromosomes, indicating common genetic factors for the different traits. On chromosome 2, Soluble Starch Synthase 2 mapped on the same position as QTLs for starch phosphorylation, starch gelling temperature and amylose content. alpha-glucan, water dikinase co-localizes on chromosome 5 together with QTLs for starch phosphorylation and cold induced sweetening. Furthermore, the genes coding for two phosphorylases (StPho1a and StPho2) coincide with QTLs for starch gelling temperature, chipping colour and starch granule size on chromosome 2 and a QTL for starch phosphorylation on chromosome 9, respectively. The results suggest allelic variation acting on the genetics of the different traits.
引用
收藏
页码：501 / 516
页数：16
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