Arbuscular mycorrhizal symbiosis facilitates apricot seedling(Prunus sibirica L.) growth and photosynthesis in northwest China
Yinli Bi1
Linlin Xie2
Zhigang Wang2
Kun Wang2
Wenwen Liu2
Wenwu Xie2
1.State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology (Beijing),Beijing 100083,China;Institute of Ecological Environment Restoration in Mine Areas of West China,Xi'an University of Science and Technology,Xi'an 710054,Shaanxi,China2.State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology (Beijing),Beijing 100083,China
摘要：Arbuscular mycorrhizal (AM) fungi can successfully enhance photosynthesis (Pn) and plants growth in agri-cultural or grassland ecosystems.However,how the symbionts affect species restoration in sunlight-intensive areas remains largely unexplored.Therefore,this study's objective was to assess the effect of AM fungi on apricot seedling physiology,within a specific time period,in northwest China.In 2010,an experimental field was established in Shaanxi Province,northwest China.The experimental treatments included two AM fungi inoculation levels (0 or 100 g of AM fungal inoculum per seedling),three shade levels (1900,1100,and 550 μmol m-2 s-1),and three ages (1,3,and 5 years)of transplantation.We examined growth,Pn,and morphological indicators of apricot (Prunus sibirica L.) seedling per-formances in 2011,2013,and 2015.The colonization rate in mycorrhizal seedlings with similar amounts of shade is higher than the corresponding controls.The mycorrhizal seedling biomass is significantly higher than the corresponding non-mycorrhizal seedling biomass.Generally,Pn,stomatal conductance (Gs),transpiration rate (Tr),and water use efficiency are also significantly higher in the mycorrhizal seedlings.Moreover,mycorrhizal seedlings with light shade (LS) have the highest Pn.WUE is increased in non-mycorrhizal seedlings because of the reduction in Tr,while Tr is increased in mycorrhizal seedlings with shade.There is a significant increase in the N,P,and K fractions detected in roots compared with shoots.This means that LS had apparent benefits for mycorrhizal seedlings.Our results also indicate that AM fungi,combined with LS,exert a positive effect on apricot behavior.
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论文发表日期：2021-12-30
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：10( 473-482 )
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