Peschke V M, Sachs M M
Department of Biology, Washington University, St. Louis, Missouri 63130.
Plant Physiol. 1994 Feb;104(2):387-94. doi: 10.1104/pp.104.2.387.
Until recently, the only genes described in plants induced by oxygen deprivation (anoxia or hypoxia) encoded enzymes of glucose-phosphate metabolism. In the present study, two flooding-induced maize (Zea mays L.) genes that may serve a different function have been identified. These genes, with unique kinetics of mRNA induction under flooding conditions, were not induced by heat, cold, or salt stress or by seedling death. The predicted protein sequence of one gene, wusl1005, is similar to that of several other plant genes, including a nasturtium (Tropaeolum majus L.) xyloglucan-endo-transglycosylase. The predicted protein sequence of the other gene showed no significant homology to genes of known function, indicating that both of these genes may play novel roles in the maize response to oxygen deprivation.
直到最近，在因氧剥夺（缺氧或低氧）而诱导的植物中所描述的唯一基因编码的是葡萄糖磷酸代谢的酶。在本研究中，已鉴定出两个可能具有不同功能的水淹诱导玉米（Zea mays L.）基因。这些基因在水淹条件下具有独特的mRNA诱导动力学，不会因热、冷、盐胁迫或幼苗死亡而被诱导。其中一个基因wusl1005的预测蛋白质序列与其他几个植物基因的序列相似，包括一个旱金莲（Tropaeolum majus L.）木葡聚糖内转糖基酶。另一个基因的预测蛋白质序列与已知功能的基因没有显著同源性，这表明这两个基因可能在玉米对氧剥夺的反应中发挥新的作用。
