Abstract:
:Jatropha curcas is a new promising bioenergy crop due to the high oil content in its seeds that can be converted into biodiesel. Seed size, a major determinant of Jatropha oil yield, is a target trait for Jatropha breeding. Due to the vital roles of phytohormone auxin in controlling seed and fruit development, we screened key genes in auxin pathway including ARF and IAA families and downstream effectors to identify candidate genes controlling seed size in Jatropha. As a result, JcARF19 was mapped in the major quantitative trait locus (QTL) region and significantly associated with seed length. By using expression QTL (eQTL) analysis to link variants with functional candidate genes, we provided evidences that seed traits were affected by the interaction of JcARF19 and JcIAA9. ARF19 and IAA9, involved in auxin signal transduction, were conserved in higher plants. These data including the single-nucleotide polymorphisms (SNPs) in the two genes could lead to utilization of the genes by integrating favored alleles into elite varieties through marker-assisted selection.
journal_name
Funct Integr Genomicsjournal_title
Functional & integrative genomicsauthors
Ye J,Liu P,Zhu C,Qu J,Wang X,Sun Y,Sun F,Jiang Y,Yue G,Wang Cdoi
10.1007/s10142-014-0400-5subject
Has Abstractpub_date
2014-12-01 00:00:00pages
757-66issue
4eissn
1438-793Xissn
1438-7948journal_volume
14pub_type
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