Arbuscular mycorrhizal fungi associated with tree peony in 3 geographic locations in China
Arbuscular mycorrhizal fungi associated with tree peony in 3 geographic locations in China
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DOI：
10.3906/tar-1301-69
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发表时间：
2013-03
影响因子：
2.9
通讯作者：
Z. Shi;Yinglong Chen;Xiaogai Hou;Shuangcheng Gao;Fayuan Wang
中科院分区：
文献类型：
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作者：
Z. Shi;Yinglong Chen;Xiaogai Hou;Shuangcheng Gao;Fayuan Wang
丛枝菌根真菌(AMF)的多样性因其在生态系统中的潜在功能而备受关注。牡丹是一种重要的传统观赏药用植物，具有重要的经济意义。对中国地区3个不同地理位置的14个牡丹品种的根际菌根状况进行了研究。所有品种的根样本均被丛枝菌根侵染。根长定殖率、小泡定殖率和丛枝定殖率分别为39%、3.6%和6.0%。丛枝菌根真菌的物种丰富度为5~11个，孢子密度为20~61个/50g根际土壤。AMF物种多样性(Shannon-Wiener指数)平均值为1.92，变幅为1.64~2.18。根际土壤共鉴定出3属31种丛枝菌根真菌。优势属为球菌属(21种)，其次为无梗霉属(7种)和枯草芽孢属(3种)。聚集型是分布最广的物种，出现频率为71.4次，相对多度为13.6%。本研究对牡丹不同原始品种群AM真菌多样性进行了比较。这一认识将有助于在不同的牡丹原始品种群中选择合适的AM菌剂进行栽培。
The diversity of arbuscular mycorrhizal fungi (AMF) is of great interest because of their potential function in ecosystems. Tree peony is an important traditional ornamental and medicinal plant with economic significance. We examined the mycorrhizal status of the rhizosphere of 14 common cultivars of tree peony (Paeonia suffruticosa) in 3 different geographic locations in China. Root samples of all cultivars were colonized by AMF. The mean percentage of root length colonization, vesicles, and arbuscules were 39%, 3.6%, and 6.0%, respectively. AMF species richness varied from 5 to 11, and spore density ranged from 20 to 61 per 50 g of rhizospheric soil. The average AMF species diversity (Shannon-Wiener index) was 1.92, ranging from 1.64 to 2.18. A total of 31 AMF species belonging to 3 genera were identified in the rhizospheric soil. Glomus (21) was the dominant genus, followed by Acaulospora (7) and Scutellospora (3). G. aggregatum was the most commonly distributed species, with an occurrence frequency of 71.4 and a relative abundance of 13.6%. This study focused on the comparison of AM fungal diversity associated with tree peony in various original cultivar groups. This knowledge will help in selecting suitable AM inoculums for cultivation in the different original cultivar groups of tree peony.