Influence of Elevated Temperatures on Resistance Against Phoma Stem Canker in Oilseed Rape.
Influence of Elevated Temperatures on Resistance Against Phoma Stem Canker in Oilseed Rape.
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DOI：
10.3389/fpls.2022.785804
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发表时间：
2022
影响因子：
5.6
通讯作者：
Stotz HU
中科院分区：
文献类型：
--
作者：
Noel K;Qi A;Gajula LH;Padley C;Rietz S;Huang YJ;Fitt BDL;Stotz HU
品种抗性是控制农作物病原相关病害的重要手段。随着全球变暖导致气温升高，耐温抗病性将在作物保护中发挥重要作用。然而，抗病反应的温度敏感性背后的机制知之甚少，在作物物种和鲜为人知的是，温度升高对定量抗病性的影响。本文研究了温度升高对甘蓝型油菜抗斑点落叶病菌数量抗性的影响。通过田间试验和环境控制接种试验，研究了温度对小麦抗白粉病基因介导的抗性和数量抗性的影响。斑点;特别感兴趣的是夏季高温对茎点霉茎溃疡病严重程度的影响。在英国和法国的不同地点进行了连续三个生长季节的田间试验，使用12个冬油菜育种系或品种，有或没有R基因和/或数量抗性。茎接种试验是在受控环境条件下用四个品种/育种系进行的，使用无毒和有毒的L。斑点病菌分离株，以确定环境温度的升高是否会降低抗性的效力。高6月最高温度被发现与茎点霉茎溃疡病的严重程度。没有温度对茎溃疡病的严重程度的影响被发现的品种ES Astrid（只有数量的电阻，没有已知的R基因）。然而，在受控的环境条件下，栽培品种ES Astrid在20°C下比在25°C下具有显著更少量的坏死组织。这表明，在25°C的持续温度下，定量电阻的功效降低。这项研究的结果表明，温度弹性的数量电阻是目前在一些油料品种和数量电阻的效力是保持在升高的温度，但不是当这些高温持续了很长一段时间。
Cultivar resistance is an important tool in controlling pathogen-related diseases in agricultural crops. As temperatures increase due to global warming, temperature-resilient disease resistance will play an important role in crop protection. However, the mechanisms behind the temperature-sensitivity of the disease resistance response are poorly understood in crop species and little is known about the effect of elevated temperatures on quantitative disease resistance. Here, we investigated the effect of temperature increase on the quantitative resistance of Brassica napus against Leptosphaeria maculans. Field experiments and controlled environment inoculation assays were done to determine the influence of temperature on R gene-mediated and quantitative resistance against L. maculans; of specific interest was the impact of high summer temperatures on the severity of phoma stem canker. Field experiments were run for three consecutive growing seasons at various sites in England and France using twelve winter oilseed rape breeding lines or cultivars with or without R genes and/or quantitative resistance. Stem inoculation assays were done under controlled environment conditions with four cultivars/breeding lines, using avirulent and virulent L. maculans isolates, to determine if an increase in ambient temperature reduces the efficacy of the resistance. High maximum June temperature was found to be related to phoma stem canker severity. No temperature effect on stem canker severity was found for the cultivar ES Astrid (with only quantitative resistance with no known R genes). However, in the controlled environmental conditions, the cultivar ES Astrid had significantly smaller amounts of necrotic tissue at 20°C than at 25°C. This suggests that, under a sustained temperature of 25°C, the efficacy of quantitative resistance is reduced. Findings from this study show that temperature-resilient quantitative resistance is currently available in some oilseed cultivars and that efficacy of quantitative resistance is maintained at increased temperature but not when these elevated temperatures are sustained for a long period.
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影响因子：
16.6
作者：
Cheng, Cheng;Gao, Xiquan;Feng, Baomin;Sheen, Jen;Shan, Libo;He, Ping
通讯作者：
He, Ping
影响因子：
2.7
作者：
Hubbard, M.;Peng, G.
通讯作者：
Peng, G.
DOI：
10.1080/07060669209500906
发表时间：
1992-03-01
期刊：
CANADIAN JOURNAL OF PLANT PATHOLOGY-REVUE CANADIENNE DE PHYTOPATHOLOGIE
影响因子：
--
作者：
RIMMER, SR;VANDENBERG, CGJ
通讯作者：
VANDENBERG, CGJ
影响因子：
2.7
作者：
Huang, Y. J.;Pirie, E. J.;Fitt, B. D. L.
通讯作者：
Fitt, B. D. L.
影响因子：
9.4
作者：
Huang, YJ;Evans, N;Fitt, BDL
通讯作者：
Fitt, BDL