Starch synthesis‐, and tuber storage protein genes are differently expressed in Solanum tuberosum and in Solanum brevidens

FEBS Letters

Lakatos, Lóránt¹  Molnár, Gergely¹  Bánfalvi, Zsófia¹  Szabó, László¹  Molnár, Attila¹ 

[1] Agricultural Biotechnology Center, P.O. Box 411, H-2101 Gödöllő, Hungary

关键词: Patatin;    Proteinase inhibitor;    Solanum brevidens;    Solanum tuberosum;    Starch synthesis;    Tuberization;   

DOI  :  10.1016/0014-5793(96)00234-7

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

Studying in vitro stem cuttings of Solanum tuberosum induced for tuberization and those of a non-tuberizing Solanum species, differences both in morphology and in gene expression were detected. Stolon formation essentially depended on light while tuberization was triggered by the elevated level of sucrose in the medium. Genes involved in starch synthesis were induced by sucrose in both species, however, starch granules were detected only in potato. A new tuber specific cDNA clone, GM7, encoding a putative metallocarboxypeptidase inhibitor and the cDNA of a proline rich cell wall protein with S. brevidens specific expression were isolated by differential screening. Sucrose mediated transcription of the tuber storage proteins like patatin and proteinase inhibitors (Kunitz-type, winI, GM7) failed in S. brevidens.

【 授权许可】

Unknown