A gene encoding a major Kunitz proteinase inhibitor of storage organs of winged bean is also expressed in the phloem of stems

Winged bean Kunitz chymotrypsin inhibitor (WCI) accumulates abundantly in seeds and tuberous roots, and small amounts of the WCI protein and mRNA can also be detected in stems. In this study, we analyzed the localization of the WCI protein in stems of winged bean. The results demonstrated that the W...

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Bibliographic Details
Published in:Plant molecular biology 1996-12, Vol.32 (6), p.1209-1213
Main Authors: Habu, Y, Fukushima, H, Sakata, Y, Abe, H, Funada, R
Format: Article
Language:English
Subjects:
Fabaceae - chemistry
Fabaceae - genetics
Gene Expression
Gene Expression Regulation, Plant
Genes, Plant
Genes, Reporter
Multigene Family
Plant Proteins
Plant Stems - chemistry
Plant Stems - genetics
Plants, Medicinal
Seeds - genetics
Trypsin Inhibitors - analysis
Trypsin Inhibitors - genetics
Trypsin Inhibitors - physiology
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Summary:Winged bean Kunitz chymotrypsin inhibitor (WCI) accumulates abundantly in seeds and tuberous roots, and small amounts of the WCI protein and mRNA can also be detected in stems. In this study, we analyzed the localization of the WCI protein in stems of winged bean. The results demonstrated that the WCI protein was localized in sieve tubes. Furthermore, we showed that the 5' region of the WCI-3b gene, which exhibited strong transcriptional activity in developing seeds, also promoted transcription of a reporter gene in the phloem of stems of transgenic tobacco.
ISSN:0167-4412
1573-5028
DOI:10.1007/bf00041408