%0 Journal Article
%A Jen-Chih Chen
%A Yih-Ming Chen and Kai-Wun Yeh
%T Isolation and Characterization of New Sporamin Gene Members from Sweet Potato (Ipomoea batatas Lam.)(1)
%D 1997
%J Taiwania
%V 42
%N 1
%P 34-42
%U https://taiwania.ntu.edu.tw/abstract/81
%X Two full-length and two partial cDNAs encoding sporamin A have been isolated from sweet potato tuberous roots. Sequence comparisons show that they are very similar with 94-98% homology at nucleotide level, and 80-88% at protein level. All four cDNAs possess multiple alternate polyadenylation signals in the 3' untranslated region ( 3'-UTR). Genomic Southern blot analysis indicates the presence of a sporamin multigene family in sweet potato. High levels of sporamin mRNAs were detected in developing tuberous roots, but they disappeared at the sprout-germinating stage. Differential expression of these genes was obvious as their mRNAs were present specifically in developing roots, rarely in stems and not in leaves.
%M doi:10.6165/tai.1997.42.34