title: [Effects of inoculation with arbuscular mycorrhizal fungi on AIPO4 uptake by Poncirus trifoliata].
abstract: With sand culture in greenhouse, this paper studied the effects of inoculation with arbuscular mycorrhizal (AM) fungi Glomus mosseae and G. versiforme on the utilization of insoluble phosphate AlPO4 (Al-P) by trifoliate orange (Poncirus trifoliata) seedlings. The results indicated that inoculation with AM fungi notably increased the dry matter, P content, and P absorption rate of P. trifoliata. The contribution of mycorrhiza, P uptake by plant and AM fungi, and the contribution of AM fungi in P uptake by P. trifoliata increased greatly with increasing Al-P level in the medium. Inoculation with AM fungi greatly increased the excretion of phosphatase, especially acid- and neutral phosphatase, from plant root and hyphae, but the excretion amount decreased with increasing Al-P level. The contribution of the fungi in P uptake by P. trifoliata was significantly positively correlated with the amounts of acid-, neutral-, alkaline-, and total phosphatase.
authors.affiliation: Key Laboratory of Horticulture Plant Biology Ministry of Education, Huazhong Agricultural University, Wuhan 430070, China. jinfa@webmail.hzau.edu.cn
authors.forename: Jin-Fa
authors.initials: JF
authors.lastname: Liu
authors.forename: Ren-Xue
authors.initials: RX
authors.lastname: Xia
authors.forename: Ming-Yuan
authors.initials: MY
authors.lastname: Wang
authors.forename: Peng
authors.initials: P
authors.lastname: Wang
authors.forename: Qing-Qing
authors.initials: QQ
authors.lastname: Ran
authors.forename: Yuan
authors.initials: Y
authors.lastname: Luo
mesh_terms: D000042:Absorption; D017607:Aluminum Compounds / Q000378:metabolism*; D004780:Environment, Controlled; D038821:Mycorrhizae / Q000254:growth & development / Q000502:physiology*; D010710:Phosphates / Q000378:metabolism*; D010744:Phosphoric Monoester Hydrolases / Q000378:metabolism; D018517:Plant Roots / Q000382:microbiology; D032104:Poncirus / Q000378:metabolism* / Q000382:microbiology*
chemical_list: D017607:Aluminum Compounds; D010710:Phosphates; D010744:Phosphoric Monoester Hydrolases; C012714:aluminum phosphate