期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 22, 期 3, 页码 -出版社
MDPI
DOI: 10.3390/ijms22031434
关键词
abiotic stress; localization; Oryza sativa; ribosome-inactivating protein; rice
资金
- Research Council of Ghent University [BOF15/GOA/005]
- Fund for Scientific Research-Flanders (FWO) [G007916N]
Ribosome-inactivating proteins (RIPs) are cytotoxic enzymes that inhibit protein translation by depurinating rRNA. Some rice RIPs lack signal peptides and may affect stress responses mediated by methyl jasmonate.
Ribosome-inactivating proteins (RIPs) are a class of cytotoxic enzymes that can inhibit protein translation by depurinating rRNA. Most plant RIPs are synthesized with a leader sequence that sequesters the proteins to a cell compartment away from the host ribosomes. However, several rice RIPs lack these signal peptides suggesting they reside in the cytosol in close proximity to the plant ribosomes. This paper aims to elucidate the physiological function of two nucleocytoplasmic RIPs from rice, in particular, the type 1 RIP referred to as OsRIP1 and a presumed type 3 RIP called nuRIP. Transgenic rice lines overexpressing these RIPs were constructed and studied for developmental effects resulting from this overexpression under greenhouse conditions. In addition, the performance of transgenic seedlings in response to drought, salt, abscisic acid and methyl jasmonate treatment was investigated. Results suggest that both RIPs can affect methyl jasmonate mediated stress responses.
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