کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8846761 1617759 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fungal plant pathogens on inoculated maize leaves in a simulated soil warming experiment
ترجمه فارسی عنوان
پاتوژن های گیاهی قارچی بر روی برگ های ذرت مجددا کشت شده در یک آزمایش گرمایی شبیه سازی شده
کلمات کلیدی
تغییرات اقلیمی زمستان، گرم شدن زمین، پاتوژن های گیاهی قارچی، باقی مانده های ذرت، تجزیه، قندهای آمینو،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
چکیده انگلیسی
Climate change will affect the survival of plant pathogens and the decomposition of crop residues on temperate arable soils. Information on the survival of fungal plant pathogens is important for assessing the subsequent infection risk of susceptible agricultural crops. Therefore, a soil warming experiment was performed to examine the effects of rising winter soil temperatures on the inoculum load of fungal plant pathogens (Fusarium culmorum, F. graminearum, Rhizoctonia solani) and the decomposition of infested maize leaves under field conditions. Using heating cables, an arable soil was subjected to temperature treatments simulating medium (+1.3 °C up to the year 2050) and long-term (+2.7 °C up to the year 2100) climate warming scenarios. Litterbags filled with pathogen-inoculated and non-inoculated maize leaves were placed on top of the soil. Soil microbial biomass below the litterbags, maize leaf decomposition as well as microbial colonisation of leaves were measured after 152 days. Pathogen load was estimated by DNA, total saprotrophic biomass by fungal glucosamine and bacterial muramic acid. Rising soil temperatures increased decomposition of pathogen-infested, but not that of non-inoculated maize leaves, without correlation to fungal and bacterial biomass. F. culmorum DNA produced the largest increase in DNA on maize leaves, but did not significantly respond to soil temperatures. In contrast, the increase in F. graminearum DNA was considerably lower, but revealed a significant positive response to rising soil temperatures. DNA from mycelia and sclerotia of R. solani strongly decreased. Rising winter soil temperatures will most likely cause shifts within the plant residue colonizing fungal community, especially between different Fusarium species.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Soil Ecology - Volume 124, March 2018, Pages 75-82
نویسندگان
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