Regulative Effect of Arbuscular Mycorrhizal Fungi on Water Absorption and Expression of Aquaporin Genes in Tomato Under Salt Stress

ACTA HORTICULTURAE SINICA ›› 2011, Vol. 38 ›› Issue (2): 273-273–280.

• Vegetables • Previous Articles Next Articles

Regulative Effect of Arbuscular Mycorrhizal Fungi on Water Absorption and Expression of Aquaporin Genes in Tomato Under Salt Stress

HE Zhong-qun1，HE Chao-xing2,*，YAN Yan2，ZHANG Zhi-bin1，WANG Huai-song2，LI Huan-xiu1，and TANG Hao-ru1

（1College of Horticulture，Sichuan Agricultural University，Ya’an，Sichuan 625014，China；2Instiute of Vegetables and Flowers，Chinese Academy of Agricultural Sciences，Beijing 100081，China）

Received:2010-06-21 Revised:2011-01-21 Online:2011-02-25 Published:2011-02-25
Contact: HE Chao-xing

Abstract

Abstract: Effect of arbuscular mycorrhizal fungi on regulation of water absorption and expression of five aquaporin genes（LePIP1，LePIP2，LeTRAMP，LeAQP2，LeTIP）of root in arbuscular mycorrhizal tomato by realtime-PCR were studied under different NaCl stress（0.5%，1.0%）. Results showed that the growth of tomato was improved，as while relative water content，water potential and hydraulic conductance of root were increased by AMF inoculation under salt stress. Expression of five genes was induced by AMF and salinity jointly. Up-regulated expression of LeAQP2 gene and down-regulated of other four genes in root of AMF tomato were detected in contrast to non-AMF one. Accordingly，overexpression of LeAQP2 gene in root may be relation to enhanced hydraulic conductance induced by AMF.

Key words: tomato, salt stress, arbuscular mycorrhizal fungi, water absorption, aquaporin gene

CLC Number:

S 641.2

HE Zhong-qun;HE Chao-xing;YAN Yan;ZHANG Zhi-bin;WANG Huai-song;LI Huan-xiu;and TANG Hao-ru. Regulative Effect of Arbuscular Mycorrhizal Fungi on Water Absorption and Expression of Aquaporin Genes in Tomato Under Salt Stress[J]. ACTA HORTICULTURAE SINICA, 2011, 38(2): 273-273–280.

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Regulative Effect of Arbuscular Mycorrhizal Fungi on Water Absorption and Expression of Aquaporin Genes in Tomato Under Salt Stress

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