Distribution of Petrosavia sakuraii (Petrosaviaceae), a rare mycoheterotrophic plant, may be determined by the abundance of its mycobionts
Distribution of Petrosavia sakuraii (Petrosaviaceae), a rare mycoheterotrophic plant, may be determined by the abundance of its mycobionts
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Petrosavia sakuraii（Petrosaviaceae）是一种罕见的真菌异养植物，其分布可能由其真菌生物体的丰度决定
DOI：
10.1007/s00572-016-0680-9
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发表时间：
2016
期刊：
影响因子：
3.9
通讯作者：
R. Kusakabe and T. Yukawa
中科院分区：
文献类型：
--
作者：
Yamato;M.;H. Takahashi;A. Shimono;R. Kusakabe and T. Yukawa
樱花(Petrosavia Sakuraii)是一种罕见的真菌异养植物，与丛枝菌根(AM)真菌具有特殊的共生关系。在本研究中，我们验证了真菌在TWoP中的分布和丰度的假设。SkuraiiHabats，Nagiso和Sengenyama(日本本州中部)决定了这种稀有植物的分布格局。Nagiso是一个繁华的栖息地，有数百名OFP。樱山是一个人口稀少的栖息地，每100平方米只有不到10只个体。与树根相关的AM真菌群落在距离P 20厘米处进行了比较。通过对AM真菌核糖体小亚基RNA基因部分序列的分子鉴定，樱花在两个栖息地之间发芽。AM真菌序列与优势菌P的同源性在99%以上。Skuraiimycobionts在Nagiso较高(54.9%)，而在Sengenyama较低(13.2%)。因此，丰富多彩的OFP。樱花，以反映潜在的真菌的比例。这很可能是P。樱花真菌在日本暖温带森林中并不罕见，因为11.2%的AM真菌序列以前是从没有OFP的落叶阔叶林中获得的。位于日本本州中部的樱花瑞穗与占主导地位的P>；99%的产品完全相同。樱花科生物。因此，结果表明，丰富的真菌生物群可能是充分繁殖OFP所必需的。Skuraii，这一数量性状是P。樱花可以解释这种植物的稀有之处。
Petrosavia sakuraii(Petrosaviaceae) is a rare, mycoheterotrophic plant species that has a specific symbiotic interaction with a narrow clade of arbuscular mycorrhizal (AM) fungi. In the present study, we tested the hypothesis that the distribution and abundance of mycobionts in twoP. sakuraiihabitats, Nagiso and Sengenyama (central Honshu, Japan), determine the distribution pattern of this rare plant. Nagiso is a thriving habitat with hundreds ofP. sakuraiiindividuals per 100 m2, whereas Sengenyama is a sparsely populated habitat with fewer than 10 individuals per 100 m2. AM fungal communities associated with tree roots were compared at 20-cm distances fromP. sakuraiishoots between the two habitats by molecular identification of AM fungal partial sequences of the small subunit ribosomal RNA gene. The percentage of AM fungal sequences showing over 99 % identity with those of the dominantP. sakuraiimycobionts was high (54.9 %) in Nagiso, but low (13.2 %) in Sengenyama. Accordingly, the abundance ofP. sakuraiiseems to reflect the proportion of potential mycobionts. It is likely thatP. sakuraiimycobionts are not rare in Japanese warm temperate forests since 11.2 % of AM fungal sequences previously obtained from a deciduous broad-leaved forest devoid ofP. sakuraiiin Mizuho, central Honshu, Japan, were >99 % identical to those of the dominantP. sakuraiimycobionts. Thus, results suggest that the abundant mycobionts may be required for sufficient propagation ofP. sakuraii, and this quantitative trait of AM fungal communities required forP. sakuraiimay explain the rarity of this plant.
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影响因子：
--
作者：
Bougoure, Jeremy;Ludwig, Martha;Grierson, Pauline
通讯作者：
Grierson, Pauline
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影响因子：
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作者：
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DOI：
--
发表时间：
2008
期刊：
American Journal of Botany 95
影响因子：
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作者：
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影响因子：
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作者：
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影响因子：
4.2
作者：
Richard J. Waterman;M. R. Klooster;Heiko Hentrich;M. Bidartondo
通讯作者：
M. Bidartondo