Defense mechanisms involving secondary metabolism in the grass family.

IF 1.5 4区 农林科学 Q2 ENTOMOLOGY Journal of Pesticide Science Pub Date : 2021-11-20 DOI:10.1584/jpestics.J21-05
Atsushi Ishihara
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引用次数: 6

Abstract

Plants synthesize and accumulate a wide variety of compounds called secondary metabolites. Secondary metabolites serve as chemical barriers to protect plants from pathogens and herbivores. Antimicrobial secondary metabolites are accumulated to prevent pathogen infection. These metabolites are classified into phytoalexins (induced in response to pathogen attack) and phytoanticipins (present prior to pathogen infection). The antimicrobial compounds in the grass family (Poaceae) were studied from the viewpoint of evolution. The studies were performed at three hierarchies, families, genera, and species and include the following: 1) the distribution of benzoxazinoids (Bxs) in the grass family, 2) evolutionary replacement of phytoanticipins from Bxs to hydroxycinnamic acid amide dimers in the genus Hordeum, and 3) chemodiversity of flavonoid and diterpenoid phytoalexins in rice. These studies demonstrated dynamic changes in secondary metabolism during evolution, indicating the adaptation of plants to their environment by repeating scrap-and-build cycles.

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涉及草科植物次生代谢的防御机制。
植物合成和积累各种各样的化合物,称为次生代谢物。次生代谢物作为化学屏障保护植物免受病原体和食草动物的侵害。抗菌次生代谢物的积累可以防止病原体感染。这些代谢物分为植物抗毒素(对病原体攻击的反应)和植物预期素(在病原体感染之前存在)。从进化的角度对禾本科植物的抗菌成分进行了研究。本研究在三个等级、科、属和种上进行,包括:1)草科苯并恶嗪类化合物(Bxs)的分布;2)Hordeum属植物预期素(Bxs)向羟基肉桂酸酰胺二聚体的进化替代;3)水稻类黄酮和二萜类植物抗毒素的化学多样性。这些研究证明了进化过程中次生代谢的动态变化,表明植物通过重复的“废弃-构建”循环来适应环境。
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来源期刊
Journal of Pesticide Science
Journal of Pesticide Science 农林科学-昆虫学
CiteScore
4.30
自引率
4.20%
发文量
28
审稿时长
18-36 weeks
期刊介绍: The Journal of Pesticide Science publishes the results of original research regarding the chemistry and biochemistry of pesticides including bio-based materials. It also covers their metabolism, toxicology, environmental fate and formulation.
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