中国农业科学 2009,42(5):1590-1594 Scientia Agricultura Sinica
doi: 10.3864/j.issn.0578-1752.2009.05.011
AM 真菌和水杨酸对草莓耐盐性的影响
杨瑞红 ,刘润进 ,刘成连 ,王永章 ,李培环 ,原永兵
1 2 1 1 1 1
(1 青岛农业大学/青岛市现代农业质量与安全工程重点实验室,山东青岛 266109;2 青岛农业大学农学与植保学院菌根生物技术研究所, 山东青岛 266109)
摘要: 【目的】探索 AM 真菌与外源水杨酸 SA 提高植物耐盐性的协同效应. 【方法】于温室盆栽条件下试验了 丛枝菌根(AM)真菌摩西球囊霉(Glomus mosseae)和外源 SA 对草莓(Fragaria×ananassa Duch.品种:哈尼) 耐盐性的影响. 【结果】接种摩西球囊霉,施加外源 SA,或接种摩西球囊霉+SA 处理都能显著增加草莓植株叶片和 根内 K 和叶绿素含量,降低 Na 和丙二醛的含量,而以 G.m+SA 处理效果最佳.NaCl 6 gL-1 胁迫下,接种摩西球囊 霉和外源 SA 处理能显著提高草莓叶片 SOD,POD 和 CAT 酶活性,促进植株生长.接种 AM 真菌配合外源 SA 处理提 高草莓耐盐性的效果最明显. 【结论】在一定条件下接种 AM 真菌配合施用外源 SA 能协同提高植物耐盐性. 关键词:AM 真菌;水杨酸;草莓;盐胁迫;叶绿素;Na+;K+
Effects of Arbuscular Mycorrhizal Fungi and Salicylic Acid on Salt Tolerance of Strawberry (Fragaria×ananassa Duch) Plants
YANG Rui-hong1, LIU Run-jin2, LIU Cheng-lian1, WANG Yong-zhang1, LI Pei-huan1, YUAN Yong-bing1
(1Qingdao Key Lab of Modern Agriculture Quality and Safety Engineering, Qingdao 266109, Shandong;
2
Institute of Mycorrhizal Biotechnology, Qingdao Agricultural University, Qingdao 266109, Shandong)
Abstract: 【Objective】 The synergic effect of arbuscular mycorrhizal (AM) fungi and exogenous salicylic acid (SA) on increase of salt-tolerance of strawberry plants was explored. 【Method】 Pot experiments in greenhouse were carried out with strawberry (Fragaria×ananassa Duch cv. Hanie) plants inoculated with AM fungus (Glomus mosseae) and treated with exogenous SA. 【Result】 The leaf chlorophyll and K contents in leaves and roots were significantly increased, but the content of malondialdehyde was reduced in strawberry plants treated with G. mosseae, exogenous SA, or G. mosseae+exogenous SA, while the latter showed the best beneficial effects. Under the stress with NaCl 6 gL-1, G. mosseae and exogenous SA could significantly enhance SOD, POD and CAT activities in strawberry leaves and plant growth. The treatment with G. mosseae and exogenous SA showed the best benefits in increasing salt tolerance of strawberry plants. 【Conclusion】 It is concluded that AM fungal inoculation with SA application could synergically enhance salt-tolerance of plants. Key words: AM fungi; salicylic acid; strawberry; salt stress; chlorophyll; Na+; K+

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