DOI: 10.1111/gcb.12927
论文题名: Changing fitness of a necrotrophic plant pathogen under increasing temperature
作者: Sabburg R. ; Obanor F. ; Aitken E. ; Chakraborty S.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 8 起始页码: 3126
结束页码: 3137
语种: 英语
英文关键词: Fusarium pseudograminearum
; Climate change
; Crown rot
; Disease severity
; Fungal biomass
; Mycotoxin
; Pathogen fitness
; Temperature
; Wheat
Scopus关键词: biomass
; climate change
; crown rot
; disease severity
; fungus
; pathogen
; plant
; temperature anomaly
; temperature effect
; wheat
; Australia
; Fusarium
; Fusarium pseudograminearum
; Triticum aestivum
; trichothecene derivative
; vomitoxin
; biomass
; chemistry
; climate change
; Fusarium
; growth, development and aging
; host pathogen interaction
; metabolism
; microbiology
; physiology
; plant disease
; plant stem
; temperature
; wheat
; Biomass
; Climate Change
; Fusarium
; Host-Pathogen Interactions
; Plant Diseases
; Plant Stems
; Temperature
; Trichothecenes
; Triticum
英文摘要: Warmer temperatures associated with climate change are expected to have a direct impact on plant pathogens, challenging crops and altering plant disease profiles in the future. In this study, we have investigated the effect of increasing temperature on the pathogenic fitness of Fusarium pseudograminearum, an important necrotrophic plant pathogen associated with crown rot disease of wheat in Australia. Eleven wheat lines with different levels of crown rot resistance were artificially inoculated with F. pseudograminearum and maintained at four diurnal temperatures 15/15°C, 20/15°C, 25/15°C and 28/15°C in a controlled glasshouse. To quantify the success of F. pseudograminearum three fitness measures, these being disease severity, pathogen biomass in stem base and flag leaf node, and deoxynivalenol (DON) in stem base and flag leaf node of mature plants were used. F. pseudograminearum showed superior overall fitness at 15/15°C, and this was reduced with increasing temperature. Pathogen fitness was significantly influenced by the level of crown rot resistance of wheat lines, but the influence of line declined with increasing temperature. Lines that exhibited superior crown rot resistance in the field were generally associated with reduced overall pathogen fitness. However, the relative performance of the wheat lines was dependent on the measure of pathogen fitness, and lines that were associated with one reduced measure of pathogen fitness did not always reduce another. There was a strong correlation between DON in stem base tissue and disease severity, but length of browning was not a good predictor of Fusarium biomass in the stem base. We report that a combination of host resistance and rising temperature will reduce pathogen fitness under increasing temperature, but further studies combining the effect of rising CO2 are essential for more realistic assessments. © 2015 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61650
Appears in Collections: 影响、适应和脆弱性
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作者单位: CSIRO Agriculture Flagship, Queensland Bioscience Precinct, 306 Carmody Road, St Lucia, QLD, Australia; School of Agriculture and Food Science, The University of Queensland, St Lucia, QLD, Australia
Recommended Citation:
Sabburg R.,Obanor F.,Aitken E.,et al. Changing fitness of a necrotrophic plant pathogen under increasing temperature[J]. Global Change Biology,2015-01-01,21(8)