Santos-Silva Celeste, Louro Rogério, Natário Bruno, Nobre Tânia
Biology Department, Macromycology Laboratory, MED - Mediterranean Institute for Agriculture, Environment and Development, University of Évora, Évora, Portugal University of Évora Évora Portugal.
MED-Mediterranean Institute for Agriculture, Environment and Development, University of Évora, 7000-083 Évora, Portugal University of Évora Évora Portugal.
MycoKeys. 2021 Oct 18;84:1-14. doi: 10.3897/mycokeys.84.71372. eCollection 2021.
Developing below the soil surface desert, truffles are hard to find. Within genus, at least 18 species are described and many are endemic to the Mediterranean basin. Ecological and geographic information are key factors for species diagnosis, and so far species are believed to be linked to either acidic or basic soils or to specific plant hosts. Thus, we have looked at diversity within a relatively homogeneous geographical area in Portugal that is suitable for these species and that covered different soils and different dominant host species. We analyzed the observed intraspecific variability within the context of species ecological preferences (e. g. edaphic and putative host). One of our major findings was the discovery of in acid soils in association with , a puzzling information since, until now, this species was only found in alkaline soils. We also report on the linkage of different lineages within species and ecologic parameters such as soil texture, soil pH and plant host. Additionally, by placing the collected specimens on the most recent genus phylogeny based on the ITS region, we also updated the number of known species occurring in Portugal from three to ten. is here reported for the first time for Portugal. Overall, our results show that the exploration of undersampled sites reveals itself as a good strategy to disclose unknown aspects of desert truffle diversity and ecology. These aspects are of prime importance when considering the economic value of the desert truffles for rural populations in the Mediterranean basin.
松露生长在土壤表层以下，很难被发现。在该属中，至少描述了18个物种，其中许多是地中海盆地特有的。生态和地理信息是物种诊断的关键因素，到目前为止，人们认为这些物种与酸性或碱性土壤或特定的植物宿主有关。因此，我们研究了葡萄牙一个相对同质的地理区域内的多样性，该区域适合这些物种生长，涵盖了不同的土壤和不同的优势宿主物种。我们在物种生态偏好（如土壤性质和假定宿主）的背景下分析了观察到的种内变异性。我们的一项主要发现是在酸性土壤中发现了与……相关的……，这一信息令人困惑，因为到目前为止，该物种仅在碱性土壤中被发现。我们还报告了物种内不同……谱系与土壤质地、土壤pH值和植物宿主等生态参数之间的联系。此外，通过将收集的标本置于基于ITS区域的最新属系统发育树上，我们还将葡萄牙已知的……物种数量从三个更新到了十个。……首次在葡萄牙被报道。总体而言，我们的结果表明，对采样不足的地点进行探索是揭示沙漠松露多样性和生态未知方面的一个好策略。在地中海盆地农村人口考虑沙漠松露的经济价值时，这些方面至关重要。
