Volume 26 Issue 5
Oct.  2009
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ZHANG Li, HE Xin-hua, CHEN Hu, LI Yi-wei, ZHANG Chao-lan. Organic acid exudates from Myrica rubra roots with lead stress[J]. Journal of Zhejiang A&F University, 2009, 26(5): 663-666.
Citation: ZHANG Li, HE Xin-hua, CHEN Hu, LI Yi-wei, ZHANG Chao-lan. Organic acid exudates from Myrica rubra roots with lead stress[J]. Journal of Zhejiang A&F University, 2009, 26(5): 663-666.

Organic acid exudates from Myrica rubra roots with lead stress

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  • Corresponding author: HE Xin-hua
  • Publish Date: 2009-10-20
通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Organic acid exudates from Myrica rubra roots with lead stress

    Corresponding author: HE Xin-hua

Abstract: Organic acid exudates from one-year-old grafted Myrica rubra ‘Dongkui’ roots with lead stress(0,2,4,6 mmol·L-1) was studied using a simple solution collection method to collect root exudates,ion exchange resin to extract organic acids from root exudates,and high performance liquid chromatography (HPLC) to detect organic acid types and concentrations. Results showed that tartaric acid,oxalate,citrate,and malate were detectable with lead stress,whereas tartaric acid was only detected in the control(no lead). Malate exudation increased as stress from Pb(NO3)2 concentration increased with a maximum from stress of 6 mmol·L-1 Pb (NO3)2. As Pb (NO3)2 concentration increased,tartaric acid,oxalate,and citrate from root exudation also increased reaching a maximum with 4 mmol·L-1 Pb (NO3)2 and then gradually declining. Overall,lead continuously stimulated malate exudation from M. rubra roots. So,increased malate was probably responsible for M. rubra tolerance to lead stress. [Ch,1 tab. 20 ref.]

ZHANG Li, HE Xin-hua, CHEN Hu, LI Yi-wei, ZHANG Chao-lan. Organic acid exudates from Myrica rubra roots with lead stress[J]. Journal of Zhejiang A&F University, 2009, 26(5): 663-666.
Citation: ZHANG Li, HE Xin-hua, CHEN Hu, LI Yi-wei, ZHANG Chao-lan. Organic acid exudates from Myrica rubra roots with lead stress[J]. Journal of Zhejiang A&F University, 2009, 26(5): 663-666.

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