Contribution to Confirmed & Synthesized on Mycorrhizae of Tuber indicum s.l. with Two Dominated & Subalpine Broadleaf Trees in Southwestern China

Xiaojuan Deng^1,2, Fuqiang Yu¹, Peigui Liu^1*

¹Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China.
²College of Biological Science and Engineering, Beifang University of Nationalities, Yinchuan, China.

DOI: 10.4236/ajps.2014.521341                

Abstract

The ascomata and mycorrhizae of Tuber indicum s.l. were collected under the forest of broad-leaf species Populus yunnanensis and Quercus pannosa in the field respectively. The symbiotic relationships of both trees with T. indicum were examined and affirmed based on morphology and ITS-rDNA sequences. These two mycorrhizal combinations were successfully produced on artificially controlled substrates and cultural condition. This is the first report of a mycorrhizal association and synthesis between Chinese black truffles and poplars. A hyphal net covering the mantle’s surface of the mycorrhizae was detected in both mycorrhizal combinations. The mycorrhizal colonization of P. yunnanensis and Q. pannosa suggests that T. indicum s.l. has a broader host range and that additional corresponding wood species would be used as candidates for the cultivation of T. indicum. The nuclear-ITS sequences of the mycorrhizae included in the phylogeny of the T. indicum complex revealed that the two clades within the complex do not markedly differ with respect to their preferences for host species or geographical origin. Our results help to explain the wide distribution of both clades of the T. indicum complex. It would be more important for truffle conservation and Chinese black truffle plantation development with these two dominated & alpestrine Populus yunnanensis and Quercus pannosa at subalpine limestone areas in China.

Keywords

Host Preference, Populus yunnanensis, Quercus pannosa, Mycorrhizae, Truffle, Conservation & Plantation

Conflicts of Interest

The authors declare no conflicts of interest.

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