致命的吸引力:疫霉菌游动孢子如何找到它们的宿主

IF 6.2 2区 生物学 Q1 CELL BIOLOGY
Michiel Kasteel , Tijs Ketelaar , Francine Govers
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引用次数: 3

摘要

卵菌属植物病原体,如疫霉菌和腐霉菌,会产生称为游动孢子的能动传播剂,主动靶向宿主植物。动物孢子表现出对化学、电学和物理线索的趋同性,从而在叶层中导航并到达气孔、伤口部位和根部。根系分泌物的许多成分已被证明对游动孢子具有吸引力或排斥性。尽管某些成分具有很强的吸引力,但似乎尤其是初级宿主渗出的成分混合物对游动孢子最具吸引力。动孢子主动接近引诱物,其游动行为让人想起其他微型游动动物。为了在感知引诱剂时实现对游动孢子行为的统一描述,我们为归巢反应的连续阶段提出了以下术语:重新定向、接近、滞留和沉降。游动孢子如何感知和处理引诱剂尚不清楚,但可能涉及通过细胞表面受体的信号感知。由于游动孢子对感染很重要,通过引诱引诱剂或阻断受体来破坏它们的活性似乎是控制疾病的有前途的策略。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fatal attraction: How Phytophthora zoospores find their host

Oomycete plant pathogens, such as Phytophthora and Pythium species produce motile dispersal agents called zoospores that actively target host plants. Zoospores are exceptional in their ability to display taxis to chemical, electrical and physical cues to navigate the phyllosphere and reach stomata, wound sites and roots. Many components of root exudates have been shown attractive or repulsive to zoospores. Although some components possess very strong attractiveness, it seems that especially the mix of components exuded by the primary host is most attractive to zoospores. Zoospores actively approach attractants with swimming behaviour reminiscent of other microswimmers. To achieve a unified description of zoospore behaviour when sensing an attractant, we propose the following terms for the successive stages of the homing response: reorientation, approaching, retention and settling. How zoospores sense and process attractants is poorly understood but likely involves signal perception via cell surface receptors. Since zoospores are important for infection, undermining their activity by luring attractants or blocking receptors seem promising strategies for disease control.

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来源期刊
CiteScore
15.10
自引率
1.40%
发文量
310
审稿时长
9.1 weeks
期刊介绍: Seminars in Cell and Developmental Biology is a review journal dedicated to keeping scientists informed of developments in the field of molecular cell and developmental biology, on a topic by topic basis. Each issue is thematic in approach, devoted to an important topic of interest to cell and developmental biologists, focusing on the latest advances and their specific implications. The aim of each issue is to provide a coordinated, readable, and lively review of a selected area, published rapidly to ensure currency.
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