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A comparison of the metabolomic response of grapevine to infection with ascomycete wood-infecting fungi
Physiological and Molecular Plant Pathology ( IF 2.7 ) Pub Date : 2020-12-29 , DOI: 10.1016/j.pmpp.2020.101596
Erin R.A. Galarneau , Daniel P. Lawrence , Christopher M. Wallis , Kendra Baumgartner

Fungi that cause grapevine trunk diseases, including Diplodia seriata, Eutypa lata, Neofusicoccum parvum, and Phaeomoniella chlamydospora, all colonize woody tissues, but lesions develop to different extents. Such variation is thought to correspond to fungal virulence, but it may also reflect host metabolic responses to limit colonization. From the woody stems of potted Vitis vinifera ‘Cabernet-Sauvignon’ in the greenhouse, we measured wood lesions and quantified metabolites at the lesion margins. Amino acids, sugars, phenolics, and terpenoids were quantified by appropriate chromatography techniques. At 3 months post-inoculation (MPI) lesions from P. chlamydospora and N. parvum were larger than those of D. seriata and E. lata. Among all pathogen treatments, compared to controls, lower concentrations of terpenoids at 0.5 MPI were followed at 2 MPI by higher concentrations of some phenolic compounds. Lesion length did not correlate with primary metabolites, but larger lesions did correlate with higher phenolic concentrations and lower terpenoid concentrations.



中文翻译:

葡萄对子囊菌感染真菌的代谢组学反应比较

引起葡萄树干疾病的真菌,包括梁龙,大叶Eutypa lata细叶新镰刀菌衣原体Phaeomoniella chlamydospora,都定居在木质组织上,但病变程度不同。这种变化被认为与真菌毒力相对应,但也可能反映宿主的代谢反应,从而限制了定殖。从温室中的盆栽葡萄'Cabernet-Sauvignon'的木质茎中,我们测量了木质病灶并在病灶边缘量化了代谢产物。氨基酸,糖,酚类和萜类化合物通过适当的色谱技术定量。接种后3个月,来自衣原体假单胞菌小猪笼草D. seriataE. lata大。在所有病原体治疗中,与对照相比,在0.5 MPI时较低的萜类化合物浓度在2 MPI之后是较高浓度的某些酚类化合物。病变的长度与主要代谢产物无关,但较大的病变与较高的酚浓度和较低的萜类化合物浓度相关。

更新日期:2021-01-18
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