title: Identification of genes possibly related to storage root induction in sweet potato.
abstract: To identify genes related to initiation of storage root development in sweet potato, a cDNA library was constructed with early stage storage roots (0.3-1 cm in diameter). Single-pass sequences of the 5' ends of 2859 sweet potato cDNA clones were assembled into 483 clusters and 442 singletons. Comparison of sweet potato expressed sequence tags (ESTs) to nodulation/tumorigenesis-related sequence databases (nodule-, tumor-, potato tuber- and development-related sequences) revealed that homologs of 39 sweet potato EST sequences potentially involved in gene regulation, signal transduction and development were present in at least one of the nodulation/tumorigenesis-related sequence databases. Northern blot analyses of these 39 sequences identified 22 differentially expressed genes in early stage storage root and fibrous root. These differentially expressed genes will be potential candidates for research to elucidate the molecular processes related to sweet potato storage root induction.
authors.affiliation: Graduate School of Biotechnology, Korea University, Seoul 136-701, South Korea.
authors.forename: Min Kyoung
authors.initials: MK
authors.lastname: You
authors.forename: Cheol Goo
authors.initials: CG
authors.lastname: Hur
authors.forename: Young Sup
authors.initials: YS
authors.lastname: Ahn
authors.forename: Mi Chung
authors.initials: MC
authors.lastname: Suh
authors.forename: Byeong Choon
authors.initials: BC
authors.lastname: Jeong
authors.forename: Jeong Sheop
authors.initials: JS
authors.lastname: Shin
authors.forename: Jung Myung
authors.initials: JM
authors.lastname: Bae
mesh_terms: D001483:Base Sequence; D020224:Expressed Sequence Tags; D018507:Gene Expression Regulation, Developmental; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D027723:Ipomoea batatas / Q000235:genetics* / Q000254:growth & development* / Q000378:metabolism; D018517:Plant Roots / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D018749:RNA, Plant / Q000096:biosynthesis
chemical_list: D018749:RNA, Plant