Morphological and molecular identification of two new Ganoderma species on Casuarina equisetifolia from China.

Morphological and molecular identification of two new Ganoderma species on Casuarina equisetifolia from China.
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中国木麻黄两个新灵芝种的形态和分子鉴定

DOI:
10.3897/mycokeys.34.22593
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发表时间:
2018
期刊:
影响因子:
3.3
通讯作者:
Dai YC
Dai YC
中科院分区:
生物学2区
文献类型:
--
作者:
Xing JH;Sun YF;Han YL;Cui BK;Dai YC

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摘要灵芝是世界性的白色腐真菌属,以其药用价值而闻名。本文报道了采自中国东南部的两个灵芝属新种,并对其进行了形态特征和ITS区、翻译延伸因子1-α(EF 1-α)和RNA聚合酶II第二亚基(RPB 2)序列的系统发育分析。这两个物种的标本都是在现存的木麻黄木麻黄上发现的。窄孢灵芝(Ganoderma angustisporum sp. nov.)的特征是其无柄担子孢子和杏仁形,略截形,狭窄的担子孢子(9-11.3 × 4-5.2 µm)。灵芝属(Ganoderma cortarinicola sp. nov.)的特征是其强烈漆红色棕色的菌毛表面,明亮的黄色至黄褐色表皮和椭圆形截短的担孢子(9-10.2 × 5-6 µm)。并将这两个新种与其相关类群进行了比较。系统发育分析证实G. angustisporum和G.紫芝属是灵芝属中的不同种。
Abstract Ganoderma is a cosmopolitan white rot fungal genus, famous for its medicinal properties. In the present study, two new Ganoderma species were collected from south-eastern China and described on the basis of morphological characters and phylogenetic analyses of sequences of the internal transcribed spacer (ITS) region, the translation elongation factor 1-α gene (EF1-α) and the second subunit of RNA polymerase II (RPB2). Specimens of both species were found on living trees of Casuarina equisetifolia. Ganoderma angustisporum sp. nov. is characterised by its sessile basidiomata and almond-shaped, slightly truncate, narrow basidiospores (9–11.3 × 4–5.2 µm). Ganoderma casuarinicola sp. nov. is characterised by its strongly laccate reddish-brown pileal surface, luminous yellow to yellowish-brown cutis and ellipsoid, truncate basidiospores (9–10.2 × 5–6 µm). The two new species are compared with their related taxa. Phylogenetic analyses confirmed that G. angustisporum and G. casuarinicola are distinct species within Ganoderma.
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