Activities associated with the presence of ribosome‐inactivating proteins increase in senescent and stressed leaves

FEBS Letters

Bolognesi, Andrea¹  Polito, Letizia¹  Valbonesi, Paola¹  Gorini, Paola¹  Barbieri, Luigi¹  Stirpe, Fiorenzo¹ 

[1] Dipartimento di Patologia sperimentale dell'Università di Bologna, I-40126 Bologna, Italy

关键词: Ribosome-inactivating protein;    Polynucleotide;    adenosine nucleosidase;    Leaf senescence;    Plant stress;    RIP;    ribosome-inactivating protein;    PAP;    pokeweed antiviral protein;   

DOI  :  10.1016/0014-5793(96)00188-3

学科分类：生物化学/生物物理

来源: John Wiley & Sons Ltd.

【 摘 要 】

The ribosome-inactivating proteins (RIPs) from Hura crepitans and Phytolacca americana release adenine from herring sperm DNA. Leaf extracts from these plants show the same enzymatic activities as the RIPs. The translation inhibitory activity and the activity on DNA are both increased in the leaves of both plants during senescence or when subjected to heat or osmotic stress. It is proposed that a physiological role of RIPs could be to intervene in the death of plant cells.

【 授权许可】

Unknown