【摘要】 从普通小麦(Triticum aestivum L.)中分离了一个类核糖核酸酶(WRN1)基因的cDNA。WRN1的转录受自然衰老和黑暗诱导衰老的负调控。在幼嫩组织中WRN1也有表达。由于在两个保守的位置上组氨酸被替换,WRN1很可能已经失去了核糖核酸酶的活性。 Southern分析表明,在普通小麦基因组中,WRN1以一个小基因家族的形式存在。更多还原

【Abstract】 An S-like RNase cDNA had been isolated from common wheat (Triticum aestivum L.). Thetranscription of WRN1 mRNA was down-regulated by natural- and dark-induced senescence. But it was notsenile-tissue-specific. As the two key histidine residues were replaced, WRN1 may not be active as RNase.Southern blotting analysis showed that WRN1 exists as one of a small gene family in common wheatgenome.更多还原