Phytochemicals to suppress Fusarium head blight in wheat-chickpea rotation

被引:47
作者
Cruz, Andre F. [2 ]
Hamel, Chantal [1 ]
Yang, Chao [1 ]
Matsubara, Tomoko [2 ]
Gan, Yantai [1 ]
Singh, Asheesh K. [1 ]
Kuwada, Kousaku [3 ]
Ishii, Takaaki [2 ]
机构
[1] Agr & Agri Food Canada, Semiarid Prairie Agr Res Ctr, Swift Current, SK S9H 3X2, Canada
[2] Kyoto Prefectural Univ, Grad Sch Life & Environm Sci, Sakyo Ku, Kyoto 6068522, Japan
[3] Yamaki Co Ltd, Res Lab, Iyo, Ehime 7993194, Japan
关键词
Triticum turgidum subsp durum; Triticum aestivum; Gramineae; Cicer arietinum; Fusarium graminearum; Fusarium avenaceum; Fusarium head blight; Chemical ecology; Plant-microbe interactions; Volatile organic compounds; 2-Ethyl-1-hexanol; Trans-2-hexenal; 1-Hexanol; VOLATILE ORGANIC-COMPOUNDS; INDUCED PLANT VOLATILES; PRIMING AGENTS; CROWN ROT; GROWTH; LEAVES;
D O I
10.1016/j.phytochem.2012.03.003
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Fusarium diseases cause major economic losses in wheat-based crop rotations. Volatile organic compounds (VOC) in wheat and rotation crops, such as chickpea, may negatively impact pathogenic Fusarium. Using the headspace GC-MS method, 16 VOC were found in greenhouse-grown wheat leaves: dimethylamine, 2-methyl-1-propanol, octanoic acid-ethyl ester, acetic acid, 2-ethyl-1-hexanol, nonanoic acid-ethyl ester, nonanol. N-ethyl-benzenamine, naphthalene, butylated hydroxytoluene, dimethoxy methane, phenol, 3-methyl-phenol, 3,4-dimethoxy-phenol, 2,4-bis (1,1-dimethyethyl)-phenol, and 1,4,7,10,13,16-hexaoxa-cyclooctadecane; and 10 VOC in field-grown chickpea leaves: ethanol, 1-penten-3-ol, 1-hexanol, cis-3-hexen-1 -al, trans-2-hexen-l-ol, trans-2-hexenal, 3-methyl-1-butanol, 3-hydroxy-2-butanone, 3-methyl-benzaldehyde and naphthalene. Also found was 1-penten-3-ol in chickpea roots and in the root nodules of two of the three cultivars tested. Chickpea VOC production pattern was related (P = 0.023) to Ascochyta blight severity, suggesting that 1-penten-3-ol and cis-3-hexen-1-ol were induced by Ascochyta rabiei. Bioassays conducted in Petri plates established that chickpea-produced VOC used in isolation were generally more potent against Fusarium gram inearum and Fusarium avenaceum than wheat-produced VOC, except for 2-ethyl-1 -hexanol, which was rare in wheat and toxic to both Fusarium and tetraploid wheat. Whereas exposure to 1-penten-3-ol and 2-methyl-1-propanol could suppress radial growth by over 50% and octanoic acid-ethyl ester, nonanol, and nonanoic acid-ethyl ester had only weak effects, F. graminearum and F. avenaceum growth was completely inhibited by exposure to trans-2-hexenal, trans-2-hexen-1-ol, cis-3-hexen-1-ol, and 1-hexanol. Among these VOC, trans-2-hexenal and 1-hexanol protected wheat seedlings against F. avenaceum and F. graminearum, respectively, in a controlled condition experiment. Genetic variation in the production of 2-ethyl-1 -hexanol, a potent VOC produced in low amount by wheat, suggests the possibility of selecting Fusarium resistance in wheat on the basis of leaf VOC concentration. Results also suggests that the level of Fusarium inoculum in chickpea-wheat rotation systems may be reduced by growing chickpea genotypes with high root and shoot levels of trans-2-hexen-1-ol and 1-hexanol. Crown Copyright 2012 Published by Elsevier Ltd. All rights reserved.
引用
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页码:72 / 80
页数:9
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