کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6297791 | 1617790 | 2015 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Identification of benzoic acid and 3-phenylpropanoic acid in tobacco root exudates and their role in the growth of rhizosphere microorganisms
ترجمه فارسی عنوان
شناسایی اسید بنزوئیک و اسید 3-فنیل پروپانوئیک در ریشه های توتون و نقش آن در رشد میکروارگانیسم های ریزوسفر
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی
Phenolic compounds are secondary metabolites often implicated in plant-microorganism interactions. However, how these compounds would affect the growth of both pathogen and antagonists is not yet fully understood. In this study, the two main phenolic acids (benzoic acid and 3-phenylpropanoic acid) were screened and identified by ultra-performance liquid chromatography-quadrupole-time of flight-mass spectrometry (UPLC-Q-TOF-MS), and their contents in tobacco root exudates were evaluated. Furthermore, their effects on the biomass and activity of rhizosphere microorganisms, especially the bacterial wilt pathogen Ralstonia solanacearum and its antagonist Brevibacillus brevis in both liquid culture and soil were investigated. The results showed that the concentrations of benzoic acid and 3-phenylpropanoic acid were 0.25 μg gâ1 and 1.15 μg gâ1 dry roots, respectively. Both of them could promote the growth of the pathogen and antagonist at low concentration (benzoic acid â¤2 μg Lâ1 and 3-phenylpropanoic acid â¤3 μg Lâ1), while at high concentration, the growth of bacteria was inhibited. The minimum suppressed concentrations of these phenolic acids for R. solanacearum were higher than that for the antagonist. The growth of pathogen and antagonist together with the rhizo-microbial functional diversity significantly reduced by adding 4 μg kgâ1 benzoic acid or 8 μg kgâ1 3-phenylpropanoic acid in the soil. In conclusion, pathogen adapted better to the accumulation of tobacco root exudates than antagonist, which might be the cause of tobacco bacterial wilt outbreak in mono-cropping system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Soil Ecology - Volume 93, September 2015, Pages 78-87
Journal: Applied Soil Ecology - Volume 93, September 2015, Pages 78-87
نویسندگان
Yanxia Liu, Xiang Li, Kai Cai, Liuti Cai, Ning Lu, Junxiong Shi,