...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Phytohormone-based Activity Mapping Of Insectherbivore-produced Elicitors
【24h】

Phytohormone-based Activity Mapping Of Insectherbivore-produced Elicitors

机译：基于植物激素的昆虫食动动物产生的兴奋剂的活性定位。

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

In response to insect attack, many plants exhibit dynamic biochemical changes, resulting in the induced production of direct and indirect defenses. Elicitors present in herbivore oral secretions are believed to positively regulate many inducible plant defenses; however, little is known about the specificity of elicitor recognition in plants. To investigate the phylogenic distribution of elicitor activity, we tested representatives from three different elicitor classes on the time course of defense-related phytohormone production, including ethylene (E), jasmonic acid (JA), and salicylic acid, in a range of plant species spanning angiosperm diversity. All families examined responded to at least one elicitor class with significant increases in E and JA production within 1 to 2 h after treatment, yet elicitation activity among species was highly idiosyncratic. The fatty-acid amino acid conjugate volicitin exhibited the widest range of phytohormone and volatile inducing activity, which spanned maize (Zea mays), soybean (Glycine max), and eggplant (Solanum melongena). In contrast, the activity of inceptin-related peptides, originally described in cowpea (Vigna unguicu-lata), was limited even within the Fabaceae. Similarly, caeliferin A16:0, a disulfooxy fatty acid from grasshoppers, was the only elicitor with demonstrable activity in Arabidopsis thaliana. Although precise mechanisms remain unknown, the unpredictable nature of elicitor activity between plant species supports the existence of specific receptor-ligand interactions mediating recognition. Despite the lack of an ideal plant model for studying the action of numerous elicitors, E and JA exist as highly conserved and readily quantifiable markers for future discoveries in this field.
机译：响应昆虫的攻击，许多植物表现出动态的生化变化，导致诱导的直接和间接防御产生。食草动物口腔分泌物中的兴奋剂被认为可以积极调节许多可诱导的植物防御。然而，关于植物中激发子识别的特异性知之甚少。为了调查激发子活性的系统发生分布，我们在防御相关植物激素产生的时间过程中测试了三种不同激发子类别的代表，包括植物中一系列物种的乙烯（E），茉莉酸（JA）和水杨酸跨越被子植物的多样性。在治疗后1至2小时内，所有接受检查的科目均对至少一种激发子类别产生了反应，其中E和JA的产生显着增加，但物种间的激发活性是高度特异的。脂肪酸氨基酸共轭菌素具有最广泛的植物激素和挥发性诱导活性，涵盖了玉米（玉米），大豆（大豆）和茄子（茄子）。相反，最初在cow豆（Vigna unguicu-lata）中描述的与inceptin相关的肽的活性甚至在豆科中也受到限制。同样，来自蚱grass的二硫氧基脂肪酸caeliferin A16：0是拟南芥中唯一具有可证明活性的激发子。尽管精确的机制仍然未知，但是植物物种之间激发子活性的不可预测的性质支持介导识别的特定受体-配体相互作用的存在。尽管缺乏理想的植物模型来研究众多引发子的作用，但E和JA仍是该领域未来发现的高度保守且易于量化的标记。

著录项

  • 来源
  • 作者

    Eric A. Schmelz; Jurgen Engelberth; Hans T. Alborn; James H. Tumlinson Ⅲ; Peter E. A. Teal;

  • 作者单位

    Center of Medical, Agricultural, and Veterinary Entomology, United States Department of Agriculture, Agricultural Research Service, Chemistry Research Unit, Gainesville, FL 32608;

    Department of Biology, University of Texas, San Antonio, TX 78249;

    Center of Medical, Agricultural, and Veterinary Entomology, United States Department of Agriculture, Agricultural Research Service, Chemistry Research Unit, Gainesville, FL 32608;

    Department of Entomology, Center for Chemical Ecology, Pennsylvania State University, University Park, PA 16802;

    Center of Medical, Agricultural, and Veterinary Entomology, United States Department of Agriculture, Agricultural Research Service, Chemistry Research Unit, Gainesville, FL 32608;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ethylene; insect elicitor; jasmonic acid; plant defense; volatile organic compound;

    机译：乙烯;引发剂;茉莉酸;植物防御;挥发性有机化合物;

相似文献

  • 外文文献
  • 中文文献
  • 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