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作 者:Yasmin Vázquez-Santos Yuriana Martínez-Orea JavierÁlvarez-Sánchez NoéManuel Montaño Sara Lucía Camargo-Ricalde Silvia Castillo-Argüero
机构地区:[1]Departamento de Ecología y Recursos Naturales,Facultad de Ciencias,Universidad Nacional Autónoma de México,Facultad de Ciencias,Ciudad de México,04510,México [2]Departamento de Biología,División de Ciencias Biológicas y de la Salud,Universidad Autónoma Metropolitana-Iztapalapa,Ciudad de México,09340,México
出 处:《Phyton-International Journal of Experimental Botany》2021年第2期605-619,共15页国际实验植物学杂志(英文)
基 金:We are grateful to Dr.Irene Sánchez-Gallén for her technical assistance in the determination of AMF colonization,Biól.Marco Romero-Romero for his general technical support,and Dr.Alicia O.Hernández-Castillo for English language editing of the manuscript.Special thanks to the Magdalena Atlitic community for allowing us to work in their forest.YV-S acknowledges the Consejo Nacional de Ciencia y Tecnología(CONACyT)-Mexico(No.868569)for scholarships to purse a Master in Science degree in the Postgraduate in Biological Sciences,UNAM.
摘 要:The aim of this study was to analyze the performance of Acaena elongata colonized by arbuscular mycorrhizal fungi(AMF)to different phosphorus(P)concentrations,as a measure of AMF dependency.A.elongata,is a species from soils where P availability is limited,such as temperate forests.Our research questions were:1)How do different P concentrations affect the AMF association in Acaena elongata,and 2)How does the AMF association influence A.elongata’s growth under different P concentrations?A.elongata’s growth,P content in plant tissue,AMF colonization and dependency were measured under four P concentrations:control(0 g P kg^(-1)),low(0.05 g P kg^(-1)),intermediate(0.2 g P kg^(-1))and high(2 g P kg^(-1))in different harvests.A complete randomized block design was applied.A.elongata’s growth was higher under-AMF in intermediate and high P concentrations,and the lowest growth corresponded to+AMF in the low and intermediate P concentration.We observed a negative effect on the root biomass under+AMF in intermediate P concentration,while the P concentration had a positive effect on the leaf area ratio.The AMF colonization in A.elongata decreased in the highest P concentration and it was favored under intermediate P concentration;while the low and the high concentrations generated a cost-benefit imbalance.Our results suggest that the performance of some plant species in soils with low P availability may not be favored by their association with AMF,but a synergy between AMF and intermediate P concentrations might drive A.elongata’s growth.
关 键 词:Abies religiosa forest arbuscular mycorrhizae plant growth soil fertilization
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