caa a22 4500 605518335 CHVBK 20210128100724.0 cr unu---uuuuu 210128e20150201xx s 000 0 eng 10.1007/s00572-014-0594-3 doi (NATIONALLICENCE)springer-10.1007/s00572-014-0594-3 Arbuscular mycorrhiza mediates glomalin-related soil protein production and soil enzyme activities in the rhizosphere of trifoliate orange grown under different P levels [Elektronische Daten] [Qiang-Sheng Wu, Yan Li, Ying-Ning Zou, Xin-Hua He] Glomalin-related soil protein (GRSP) is beneficial to soil and plants and is affected by various factors. To address whether mycorrhizal-induced GRSP and relevant soil enzymes depend on external P levels, a pot study evaluated effects of the arbuscular mycorrhizal fungus (AMF) Funneliformis mosseae on GRSP production and soil enzyme activities. Three GRSP categories, as easily-extractable GRSP (EE-GRSP), difficultly-extractable GRSP (DE-GRSP), and total (EE-GRSP + DE-GRSP) GRSP (T-GRSP), were analyzed, together with five enzyme activities (β-glucosidase, catalase, peroxidase, phosphatase, polyphenol oxidase) in the rhizosphere of trifoliate orange (Poncirus trifoliata) grown under 0, 3, and 30mM KH2PO4 in a sand substrate. After 4months, root AM colonization and substrate hyphal length decreased with increasing P levels. Shoot, root, and total biomass production was significantly increased by AM colonization, regardless of P levels, but more profound under 0mM P than under 30mM KH2PO4. In general, production of these three GRSP categories under 0 or 30mM KH2PO4 was similar in non-mycorrhizosphere but decreased in mycorrhizosphere. Mycorrhization significantly increased the production of EE-GRSP, DE-GRSP and T-GRSP, soil organic carbon (SOC), and activity of substrate β-glucosidase, catalase, peroxidase, and phosphatase, but decreased polyphenol oxidase activity, irrespective of P levels. Production of EE-GRSP, DE-GRSP, and T-GRSP significantly positively correlated with SOC and β-glucosidase, catalase, and peroxidase activity, negatively with polyphenol oxidase activity, but not with hyphal length or phosphatase activity. These results indicate that AM-mediated production of GRSP and relevant soil enzyme activities may not depend on external P concentrations. Springer-Verlag Berlin Heidelberg, 2014 Citrus nationallicence Glomalin nationallicence Mycorrhizas nationallicence Phosphorus nationallicence Soil enzymes nationallicence Wu Qiang-Sheng College of Horticulture and Gardening, Yangtze University, 434025, Jingzhou, Hubei, China aut Li Yan College of Horticulture and Gardening, Yangtze University, 434025, Jingzhou, Hubei, China aut Zou Ying-Ning College of Horticulture and Gardening, Yangtze University, 434025, Jingzhou, Hubei, China aut He Xin-Hua School of Plant Biology, University of Western Australia, 6009, Crawley, WA, Australia aut Mycorrhiza Springer Berlin Heidelberg 25/2(2015-02-01), 121-130 0940-6360 25:2<121 2015 25 572 https://doi.org/10.1007/s00572-014-0594-3 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/s00572-014-0594-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wu Qiang-Sheng College of Horticulture and Gardening, Yangtze University, 434025, Jingzhou, Hubei, China aut NATIONALLICENCE 700 1- Li Yan College of Horticulture and Gardening, Yangtze University, 434025, Jingzhou, Hubei, China aut NATIONALLICENCE 700 1- Zou Ying-Ning College of Horticulture and Gardening, Yangtze University, 434025, Jingzhou, Hubei, China aut NATIONALLICENCE 700 1- He Xin-Hua School of Plant Biology, University of Western Australia, 6009, Crawley, WA, Australia aut NATIONALLICENCE 773 0- Mycorrhiza Springer Berlin Heidelberg 25/2(2015-02-01), 121-130 0940-6360 25:2<121 2015 25 572