Characterization of FAE1 in the zero erucic acid germplasm of Brassica rapa L

The modification of erucic acid content in seeds is one of the major goals for quality breeding in oil-yielding Brassica species. However, few low erucic acid (LEA) resources are available, and novel LEA genetic resources are being sought. Fatty acid elongase 1 (FAE1) is the key gene that controls e...

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Veröffentlicht in:Breeding science. - 1998. - 65(2015), 3 vom: 28. Juni, Seite 257-64
1. Verfasser: Yan, Guixin (VerfasserIn)
Weitere Verfasser: Li, Dan, Cai, Mengxian, Gao, Guizhen, Chen, Biyun, Xu, Kun, Li, Jun, Li, Feng, Wang, Nian, Qiao, Jiangwei, Li, Hao, Zhang, Tianyao, Wu, Xiaoming
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2015
Zugriff auf das übergeordnete Werk:Breeding science
Schlagworte:Journal Article Brassica rapa FAE1 deletions erucic acid expression promoter
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520 |a The modification of erucic acid content in seeds is one of the major goals for quality breeding in oil-yielding Brassica species. However, few low erucic acid (LEA) resources are available, and novel LEA genetic resources are being sought. Fatty acid elongase 1 (FAE1) is the key gene that controls erucic acid synthesis. However, the mechanism for erucic acid synthesis in B. rapa lacks systematic study. Here, we isolated zero erucic acid lines from 1981 Chinese landraces of B. rapa and found that the formation of LEA is not attributable to variations in FAE1 coding sequences, as reported for B. napus, but may be attributable to the decrease in FAE1 expression. Moreover, the FAE1 promoter sequences of LEA and high erucic acid materials shared 95% similarity. Twenty-eight bases deletions (containing a 24-base AT-rich region) were identified approximately 1300 bp upstream from the FAE1 start codon in the LEA accessions. The genotype with the deletions co-segregated with the LEA trait in the segregating population. This study isolated an LEA B. rapa resource that can be exploited in Brassica cultivation. The promoter variations might modify the expression level of FAE1, and the results shed light on novel regulation mechanisms for erucic acid synthesis 
650 4 |a Journal Article 
650 4 |a Brassica rapa 
650 4 |a FAE1 
650 4 |a deletions 
650 4 |a erucic acid 
650 4 |a expression 
650 4 |a promoter 
700 1 |a Li, Dan  |e verfasserin  |4 aut 
700 1 |a Cai, Mengxian  |e verfasserin  |4 aut 
700 1 |a Gao, Guizhen  |e verfasserin  |4 aut 
700 1 |a Chen, Biyun  |e verfasserin  |4 aut 
700 1 |a Xu, Kun  |e verfasserin  |4 aut 
700 1 |a Li, Jun  |e verfasserin  |4 aut 
700 1 |a Li, Feng  |e verfasserin  |4 aut 
700 1 |a Wang, Nian  |e verfasserin  |4 aut 
700 1 |a Qiao, Jiangwei  |e verfasserin  |4 aut 
700 1 |a Li, Hao  |e verfasserin  |4 aut 
700 1 |a Zhang, Tianyao  |e verfasserin  |4 aut 
700 1 |a Wu, Xiaoming  |e verfasserin  |4 aut 
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773 1 8 |g volume:65  |g year:2015  |g number:3  |g day:28  |g month:06  |g pages:257-64 
856 4 0 |u http://dx.doi.org/10.1270/jsbbs.65.257  |3 Volltext 
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