• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Phytomelanin in compositae [Review]
【24h】

Phytomelanin in compositae [Review]

机译：菊科植物中的植物黑素[综述]

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

Phytomelanin is a hard, black and resistant layer found in the pericarp of the plants belonging to the tribes Eupatorieae and Heliantheae of the sunflower family, In immature achenes the layer is pliable and soft, but it becomes dense and rigid during fruit maturation. Phytomelanin has no physical structure of its own, but assumes its layer morphology as it fills intercellular spaces in the pericarp between the hypodermis and sclerenchyma, The layer acts as a deterrent to insect predation, especially to the larvae of the sunflower moth (Homoesoma species). Physical hardness as well as toxicity play a role in its resistance against insect predation. Inheritance of the layer is controlled by a single pair of genes; dominant allele determining its presence and the recessive its absence, There is a distinct possibility to create transgenic crops by transferring phytomelanin gene to other economically important crops. Phytomelanin plays an important role in the protection of the embryo and in the process of seed germination and thus is of physiological interest. The phytomelanin has been found to be useful in tribal and subtribal classifications and to have evolutionary significance. Despite its immense economic potential, its chemical nature is not clear and many aspects related to its structure and function remain to be worked out.
机译：植物黑素是一个坚硬，黑色且具有抗性的层，存在于向日葵家族的紫茎ator科和向日葵科的植物的果皮中。在瘦果中，该层柔韧而柔软，但在果实成熟时却变得密实而坚硬。植物黑素没有其自身的物理结构，但是由于其填充了皮下组织和硬化组织之间的果皮中的细胞间空间，因此呈现其层形态。该层对昆虫的捕食具有抑制作用，尤其是对葵花蛾幼虫（同种植物） 。物理硬度和毒性在其抗昆虫捕食能力中发挥着作用。该层的遗传是由一对基因控制的。占主导地位的等位基因决定了它的存在，而隐性等位基因则决定了它的隐性缺失。通过将植物黑素基因转移到其他具有经济意义的农作物中来创造转基因作物的可能性非常大。植物黑色素在保护胚胎和种子发芽过程中起重要作用，因此具有生理学意义。已经发现植物黑素在部落和部落下的分类中有用并且具有进化意义。尽管其巨大的经济潜力，但其化学性质尚不清楚，与其结构和功能相关的许多方面仍有待研究。

著录项

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