caa a22 4500 605518343 CHVBK 20210128100724.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s00572-014-0595-2 doi (NATIONALLICENCE)springer-10.1007/s00572-014-0595-2 Arbuscular mycorrhizal symbiosis can mitigate the negative effects of night warming on physiological traits of Medicago truncatula L [Elektronische Daten] [Yajun Hu, Songlin Wu, Yuqing Sun, Tao Li, Xin Zhang, Caiyan Chen, Ge Lin, Baodong Chen] Elevated night temperature, one of the main climate warming scenarios, can have profound effects on plant growth and metabolism. However, little attention has been paid to the potential role of mycorrhizal associations in plant responses to night warming, although it is well known that symbiotic fungi can protect host plants against various environmental stresses. In the present study, physiological traits of Medicago truncatula L. in association with the arbuscular mycorrhizal (AM) fungus Rhizophagus irregularis were investigated under simulated night warming. A constant increase in night temperature of 1.53°C significantly reduced plant shoot and root biomass, flower and seed number, leaf sugar concentration, and shoot Zn and root P concentrations. However, the AM association essentially mitigated these negative effects of night warming by improving plant growth, especially through increased root biomass, root to shoot ratio, and shoot Zn and root P concentrations. A significant interaction was observed between R. irregularis inoculation and night warming in influencing both root sucrose concentration and expression of sucrose synthase (SusS) genes, suggesting that AM symbiosis and increased night temperature jointly regulated plant sugar metabolism. Night warming stimulated AM fungal colonization but did not influence arbuscule abundance, symbiosis-related plant or fungal gene expression, or growth of extraradical mycelium, indicating little effect of night warming on the development or functioning of AM symbiosis. These findings highlight the importance of mycorrhizal symbiosis in assisting plant resilience to climate warming. Springer-Verlag Berlin Heidelberg, 2014 Arbuscular mycorrhiza nationallicence Night warming nationallicence Medicago truncatula nationallicence Sugar metabolism nationallicence Symbiosis-related genes nationallicence Zinc nationallicence Hu Yajun State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut Wu Songlin State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut Sun Yuqing State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut Li Tao State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut Zhang Xin State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut Chen Caiyan Institute of Subtropical Agriculture, Chinese Academy of Sciences, 410125, Changsha, China aut Lin Ge State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut Chen Baodong State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut Mycorrhiza Springer Berlin Heidelberg 25/2(2015-02-01), 131-142 0940-6360 25:2<131 2015 25 572 https://doi.org/10.1007/s00572-014-0595-2 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00572-014-0595-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hu Yajun State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut NATIONALLICENCE 700 1- Wu Songlin State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut NATIONALLICENCE 700 1- Sun Yuqing State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut NATIONALLICENCE 700 1- Li Tao State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut NATIONALLICENCE 700 1- Zhang Xin State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut NATIONALLICENCE 700 1- Chen Caiyan Institute of Subtropical Agriculture, Chinese Academy of Sciences, 410125, Changsha, China aut NATIONALLICENCE 700 1- Lin Ge State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut NATIONALLICENCE 700 1- Chen Baodong State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, 100085, Beijing, China aut NATIONALLICENCE 773 0- Mycorrhiza Springer Berlin Heidelberg 25/2(2015-02-01), 131-142 0940-6360 25:2<131 2015 25 572