两个小麦品种旗叶尖端发育性细胞死亡

K. Tubei, L. Church, T. Xing
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引用次数: 0

摘要

小麦条锈病大流行在所有谷物种植区都有记录。Lr34具有成虫抗性,含有Lr34的小麦品种旗叶出现坏死。研究了小麦品种Frontana(抗条锈病)和Fielder(对条锈病高度敏感)旗叶进行性坏死组织和非坏死组织的细胞死亡过程。在Frontana旗叶的坏死组织中检测到聚adp核糖聚合酶(PARP)的裂解,而在非坏死组织和相应的菲尔德旗叶切片中检测不到。DNA修复基因在两个品种不同叶段的表达相似。我们的工作可能表明,蛋白质的切割参与了旗叶尖细胞的死亡。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
DEVELOPMENTAL CELL DEATH IN WHEAT FLAG LEAF TIPS IN TWO WHEAT CULTIVARS
Wheat stripe rust pandemics have been recorded across all cereal growing regions. Lr34 provides an adult plant resistance and flag leaves of many wheat cultivars containing Lr34 develop a necrotic flag leaf tip. We studied cell death process in progressive necrotic and non-necrotic tissues of flag leaves in wheat cultivars Frontana (resistant to stripe rust) and Fielder (highly susceptible to stripe rust). Cleavage of the poly(ADP-ribose) polymerase (PARP) was detected in necrotic tissues of Frontana flag leaves but not in the non-necrotic tissues or in the corresponding leaf sections in Fielder flag leaves. DNA repairing genes were also studied but their expression was similar in the two different leaf sections for both cultivars. Our work may indicate that protein cleavage is involved in the cell death of flag leaf tips in Frontana.
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