Nonhost resistance to rust pathogens - a continuation of continua.
Nonhost resistance to rust pathogens - a continuation of continua.
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对锈病病原体的非主机抵抗 - 连续性的延续。
DOI：
10.3389/fpls.2014.00664
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发表时间：
2014
影响因子：
5.6
通讯作者：
Moscou MJ
中科院分区：
文献类型：
--
作者：
Bettgenhaeuser J;Gilbert B;Ayliffe M;Moscou MJ
锈菌（锈菌目）是一类广泛分布的植物病原菌，可感染所有维管植物类群的代表。锈病严重影响几种作物物种，大量研究集中在了解宿主特异性和非宿主抗性的基础上。与许多病原体一样，锈病真菌可以感染的宿主数量差异很大，例如小麦叶锈病（锈菌）只能感染小麦属和Aegilops属的物种，而亚洲大豆锈病（Phakopsora pachyrhizi）已知可以感染42个属的95个物种。对决定寄主范围的遗传基础有了更深入的了解，就有可能确定具有重要农艺意义的作物的持久抗性来源。在这两种状态之间转换的表型的数量性质使宿主和非宿主之间的界限变得复杂。在这种中间状态下，植物与病原体相互作用的特征要么是：(1)一个物种的大多数品种对锈病具有抗性，要么是(2)锈病只能部分完成其生命周期的关键组成部分。这导致在与不同植物物种的相互作用中出现连续的疾病表型，观察到的范围从相容性（宿主）到物种内的完全免疫（非宿主）。在这篇综述中，我们将强调这些中间相互作用中抗病性的数量性质是如何由一系列防御屏障引起的，病原体需要克服这些防御屏障才能成功地在宿主中建立自己。为了说明连续性作为这一基本原理，我们将讨论在研究非宿主对锈病病原体，特别是谷物锈病病原体的抗性方面取得的进展。
The rust fungi (order: Pucciniales) are a group of widely distributed fungal plant pathogens, which can infect representatives of all vascular plant groups. Rust diseases significantly impact several crop species and considerable research focuses on understanding the basis of host specificity and nonhost resistance. Like many pathogens, rust fungi vary considerably in the number of hosts they can infect, such as wheat leaf rust (Puccinia triticina), which can only infect species in the genera Triticum and Aegilops, whereas Asian soybean rust (Phakopsora pachyrhizi) is known to infect over 95 species from over 42 genera. A greater understanding of the genetic basis determining host range has the potential to identify sources of durable resistance for agronomically important crops. Delimiting the boundary between host and nonhost has been complicated by the quantitative nature of phenotypes in the transition between these two states. Plant–pathogen interactions in this intermediate state are characterized either by (1) the majority of accessions of a species being resistant to the rust or (2) the rust only being able to partially complete key components of its life cycle. This leads to a continuum of disease phenotypes in the interaction with different plant species, observed as a range from compatibility (host) to complete immunity within a species (nonhost). In this review we will highlight how the quantitative nature of disease resistance in these intermediate interactions is caused by a continuum of defense barriers, which a pathogen needs to overcome for successfully establishing itself in the host. To illustrate continua as this underlying principle, we will discuss the advances that have been made in studying nonhost resistance towards rust pathogens, particularly cereal rust pathogens.
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影响因子：
5.1
作者：
Cloutier, Sylvie;McCallum, Brent D.;Jordan, Mark C.
通讯作者：
Jordan, Mark C.
DOI：
10.1071/bi9820231
发表时间：
1982-01-01
期刊：
AUSTRALIAN JOURNAL OF BIOLOGICAL SCIENCES
影响因子：
--
作者：
BURDON, JJ;MARSHALL, DR;GOW, DJS
通讯作者：
GOW, DJS
影响因子：
3.2
作者：
Ben Yehuda, P;Eilam, T;Anikster, Y
通讯作者：
Anikster, Y
影响因子：
64.8
作者：
Collins, NC;Thordal-Christensen, H;Schulze-Lefert, P
通讯作者：
Schulze-Lefert, P
影响因子：
3.1
作者：
Barbieri, Mirko;Marcel, Thierry C.;Pecchioni, Nicola
通讯作者：
Pecchioni, Nicola