...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Plant Physiology >The expression of the genes involved in redox metabolism and hydrogen peroxide balance is associated with the resistance of cowpea [Vigna unguiculata (L.) Walp.] to the hemibiotrophic fungus Colletotrichum gloeosporioides
【24h】

The expression of the genes involved in redox metabolism and hydrogen peroxide balance is associated with the resistance of cowpea [Vigna unguiculata (L.) Walp.] to the hemibiotrophic fungus Colletotrichum gloeosporioides

机译：参与氧化还原代谢和过氧化氢平衡的基因的表达与豇豆的抗性有关[Vigna Unguiculata（L.）Walp。]对血管性养殖真菌Colletotrichum GloooSporioides有关

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Correlations between the transcriptional responses of genes that encode superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), and peroxiredoxin (Prx) enzymes and Colletotrichum gloeosporioides development in cowpea leaves were assessed. Each of these genes is involved in the redox metabolism and hydrogen peroxide balance. Although electron microscopy revealed that conidia adhered to and germinated on the leaf cuticle, the inoculated cowpea leaves did not show any characteristic anthracnose symptoms. The adhered and germinated conidia showed irregular surfaces and did not develop further. This was apparently due to increased leaf H2O2 levels in response to inoculation with C. gloeosporioides. During the early stages post inoculation, cowpea leaves elevated the H2O2 content and modulated the defense gene expression, as well as associated pathways. During the later stages, the increased expression of the CuZnSODI and CuZnSODII genes suggested an active superoxide dismutation to further elevate H2O2 levels, which indicated that higher H2O2 content may function as a toxic agent that kills the fungus. The second increase in H2O2 production above the threshold level was correlated with the expression of the APXI, CATI, CATII, PrxIIBCD, and PrxIIE genes, which resulted in a coordinated pattern to establish an appropriate balance between H2O2 generation and scavenging. Therefore, appropriate H2O2 content in cowpea leaves inhibited C. gloeosporioides development and maintained intracellular redox homeostasis to avoid uncontrolled programmed cell death and necrosis in cowpea leaves.
机译：评估了编码超氧化物歧化酶（SOD），过氧化物（猫），抗坏血物质过氧化物酶（APX）和过洛辛氧化酶（PRX）酶和豇豆叶片胶体植物的基因之间的转录响应之间的相关性。这些基因中的每一个都参与氧化还原代谢和过氧化氢平衡。虽然电子显微镜表明，Conidia粘附在叶角质层上染色，接种的豇豆叶未显示任何特征的炭疽病症状。粘附和发芽的分枝瘤显示出不规则的表面，并没有进一步发展。这显然是由于叶H 2 O 2水平增加，响应于与C. gloooosporoIroIs接种。在接种后的早期阶段，豇豆叶升高了H 2 O 2含量并调节了防御基因表达，以及相关的途径。在后期阶段期间，Cuznsodi和Cuznsodii基因的增加表达了活性超氧化物歧化，以进一步提高H 2 O 2水平，表明较高的H 2 O 2含量可以用作杀死真菌的有毒剂。高于阈值水平的H 2 O 2产量的第二次增加与APXI，CATI，CATII，PRXIIBCD和PRXIIE基因的表达相关，这导致协调模式，以在H2O2代和清除之间建立适当的平衡。因此，豇豆中的适当H 2 O 2含量叶抑制了C. gloooSporioides发育并维持细胞内氧化还原稳态，以避免豇豆叶中不受控制的程序性细胞死亡和坏死。

著录项

相似文献

  • 外文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号