کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2053575 1075485 2013 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Morphological, mycorrhizal and molecular characterization of Finnish truffles belonging to the Tuber anniae species-complex
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Morphological, mycorrhizal and molecular characterization of Finnish truffles belonging to the Tuber anniae species-complex
چکیده انگلیسی


• Morphological and ITS-rDNA analyses were conducted on ascomata and ectomycorrhizae of T. anniae.
• Phylogenetic analysis showed that T. anniae is a geographically disjunct species-complex.
• It is distributed across North America and Baltic Rim, associated with angiosperm and gymnosperm hosts.
• The presence of T. anniae complex in New Zealand is evidence of recent human-mediated dispersal.
• Organic matter, lime and soil aeration may promote truffle fruiting in natural and agricultural ecosystems.

The truffle species Tuber anniae was originally described from the U.S. Pacific Northwest and is purported to be uncommon. Here, we report for the first time on the fruiting of closely related taxa in Baltic Rim countries. These truffles were found in a forest dominated by Scots pine in eastern Finland. Mycorrhizal analyses confirmed its symbiosis with Pinus sylvestris. Morphological observations of ascomata and mycorrhizae, and phylogenetic analyses confirmed that these white truffles belong within the group of Tuber puberulum (i.e., Puberulum clade). Further, they group in Clades II and III of the T. anniae species-complex. With the inclusion of sequences from GenBank we are able to demonstrate that the previously unnamed environmental clade (Clade II) has been found as ectomycorrhiza in symbiosis with pine, birch, oak, aspen and even orchids in Europe. Thus, the T. anniae species-complex as a whole (and two of the three clades within) exhibit considerable geographic disjuncts: Northwestern North America and the Baltic Rim of Europe. Clade II, which was collected in agricultural soils in Finland and along roadsides in Alaska, may also be adapted for colonization into new habitats. This may help to explain its presence in New Zealand (where Tuber is not native), which most likely resulted from human-mediated dispersal of these fungi through forestry or the nursery trade. Based on our results, we hypothesize that management practices such as organic and lime amendments, along with aeration, are beneficial to the fruiting of T. anniae. Further research is needed to determine the edibility of these species and whether commercial markets can be developed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fungal Ecology - Volume 6, Issue 4, August 2013, Pages 269–280
نویسندگان
, , , , , , ,