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Arbuscular Mycorrhizal Fungal Diversity Associated with Olea europaea L. Growing in Yunnan Province, Southwestern China

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Phyton-International Journal of Experimental Botany 2022年第12期91卷 2719-2732页

作者： Yuebo Jing Jihua Mao Rongbo Li Yunnan Academy of Forestry and Grassland Kunming650201China

Olive(Olea europaea L.)is one of the most important and widely cultivated fruit trees,with high economic,ecological,cultural and scientific *** began introducing and cultivating olive in the 1960s,and Yunnan Province is one of the main growing *** the cultivation and productivity of this tree crop species is an important *** is a typical mycotrophic species and the potential of arbuscular mycorrhizal fungi(AMF)for this plant is well recognized;nevertheless,studies of olive AMF in China are still very *** and rhizosphere soils of olive were sampled from five representative growing sites in the Yunnan Province of China to investigate the AMF colonization status in the root systems,the AMF community in the olive orchards and the edaphic factors influencing the arbuscular mycorrhizal(AM)*** samples of olive trees from different growing sites generally showed AMF colonization,suggesting that autochthonous AMF manifest a high efficiency in colonizing the roots of olive *** spore density on the five sites ranged from 81.6 to 350 spores per 20 g ***-three AMF species from 9 genera were identified in total,and Glomeraceae was the dominant *** findings of our study suggested a high AMF diversity harbored by olive growing in different areas of the Yunnan Province,Southwestern ***,the hyphal colonization in roots positively correlated with soil pH and *** arbuscule colonization in olive roots negatively correlated with soil pH,EC,OM,TN,TP and *** spore density positively correlated with OM,TN,AN,AP and sand ***,the Shannon index of AMF in the rhizosphere soil positively correlated with the clay content,but negatively correlated with soil pH,TN and silt *** high diversity of autochthonous AMF in Yunnan is promising for screening AMF isolates for utilization in the efficient cultivation of this crop.

关键词： AMF community spore identification edaphic factor Olea europaea L.

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