Zn Acquisition by Extraradical Hyphae in Arbuscular Mycorrhizal Plant Depending on Zn Nutritional Status of Cucumber (Cucumis sativus cv. Baekdadagi)
Lee, Y.J.(National Institute of Agricultural Science and Technology, RDA, Suwon, Republic of Korea)E-mail:yjlee@rda.go.kr | Kim, T.W.(Hankyong National University, Ansung, Republic of Korea)
The contribution of plant nutrition status in arbuscular mycorrhizal (AM) plant to the nutrient acquisition by extraradical hyphae of AM fungi was investigated using cucumber colonized with Glomus intraradicies (BEG 110) focusing on the Zn. Compartmentalized pots with separated zones for hyphal growth were used to determine the contribution of extraradical AM hyphae to Zn uptake from hyphal zones. 0.5 μM Zn was supplied into the hyphal zones as nutrient solution (10 mL/day) with a form of ZnSO₄. Zn foliar application was made two times for one week before harvest (8 mL/plant).
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