کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2413773 1552050 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Long-term irrigation effects on Spanish holm oak growth and its black truffle symbiont
ترجمه فارسی عنوان
اثرات آبیاری بلند مدت بر رشد بلوط اسپانیایی هولم و سیمبیون تروفو سیاه آن
کلمات کلیدی
دندروکولوژی، آبیاری، همزیستی قارچ میزبان، باغ طوفان، غده ملانوسپوروم، آناتومی چوب
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
چکیده انگلیسی


• Périgord truffle harvest declines in drought-prone Mediterranean habitats.
• Irrigation at medium intensity is most beneficial for oak and truffle growth.
• Warmer spring and wetter summer conditions enhance the truffle-host symbiosis.
• Adequately irrigated truffle orchards may counteract falling natural truffle yields.
• Truffle production stabilizes rural tourism, regional agriculture and global markets

The Périgord black truffle is an exclusive culinary delicacy, but its Mediterranean harvests have declined, despite cultivation efforts since the 1970s. The role of long-term irrigation, symbiotic fungus-host interaction, and microbial belowground progression remain poorly understood, because generally too short experimental settings miss the necessary degree of real world complexity and reliable information from truffle orchards is limited. Here, we conduct the first dendrochronological and wood anatomical assessment of 295 holm oaks, which have been growing under different irrigation intensities in the world’s largest truffle orchard in Spain. The relationships between different climatic variables (monthly temperature means and precipitation totals) and dendro-parameters (ring width, vessel count and vessel size) of the oak hosts are utilized to disentangle direct and indirect drivers of truffle fruit body production. Irrigation at medium – instead of high – intensity is most beneficial for oak growth. Non-irrigated trees reveal overall lower stem increments. Warmer temperatures from February to April and wetter conditions from May to July enhance host vitality and possibly also its interplay with fungi symbionts via increased fine root production and mycorrhizal colonization. Adequately irrigated Mediterranean orchards may counteract some of the drought-induced natural truffle decline, and help stabilizing rural tourism, regional agriculture and global markets.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agriculture, Ecosystems & Environment - Volume 202, 1 April 2015, Pages 148–159
نویسندگان
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