有机酸在植物对重金属耐性和解毒机制中的作用

doi:10.3773/j.issn.1005-264x.2010.11.013

摘要/Abstract

摘要：

植物对重金属的耐受和解毒机制可分为外部排斥和内部耐受两大类。该文综述了有机酸作为一类金属配位体, 在植物对重金属的这两大类机制中的重要作用。在重金属的外部排斥过程中, 植物根系分泌有机酸, 与金属离子形成稳定的金属配位体复合物, 改变重金属的移动性和生物可利用性, 阻止金属离子进入植物体内或避免其在根部敏感位点累积。此外, 有机酸还可与进入植物体内的金属离子螯合, 使其转化为无毒或毒性较小的结合形态, 缓解重金属的毒害效应, 实现植物对重金属的内部耐受。

关键词: 解毒, 外部排斥, 重金属, 耐性, 内部耐受, 有机酸

Abstract:

Mechanisms of heavy metal tolerance and detoxification in plants can be divided into two categories, external exclusion and internal tolerance. We reviewed the effects of organic acids as a kind of metal chelators in both processes in plants. In the external detoxification process, organic acids excreted from plant roots may form stable metal-ligand complexes with heavy metal ions and change their mobility and bioavailability, thus preventing the metal ions entering plants or avoiding their accumulation in the sensitive sites of roots. In internal metal detoxification, organic acids may chelate with heavy metal in cytosol, where the ions can be transformed into a non-toxic or less toxic form.

Key words: detoxification, external exclusion, heavy metal, resistance, internal tolerance, organic acids

傅晓萍, 豆长明, 胡少平, 陈新才, 施积炎, 陈英旭. 有机酸在植物对重金属耐性和解毒机制中的作用. 植物生态学报, 2010, 34(11): 1354-1358. DOI: 10.3773/j.issn.1005-264x.2010.11.013

FU Xiao-Ping, DOU Chang-Ming, HU Shao-Ping, CHEN Xin-Cai, SHI Ji-Yan, CHEN Ying-Xu. A review of progress in roles of organic acids on heavy metal resistance and detoxification in plants. Chinese Journal of Plant Ecology, 2010, 34(11): 1354-1358. DOI: 10.3773/j.issn.1005-264x.2010.11.013

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https://www.plant-ecology.com/CN/Y2010/V34/I11/1354

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参考文献 34

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有机酸 Organic acid	重金属 Heavy metal	植物 Plant species	参考文献 Reference
乙醇酸、马来酸、乙酸、乳酸、琥珀酸 Glycolic acid, maleic acid, acetic acid, lactic acid, succinic acid	Cd	烟草 Nicotiana benthamiana	Chiang et al., 2006 Chiang et al., 2006
乙酸、马来酸、琥珀酸、苹果酸 Acetic acid, maleic acid, succinic acid, malic acid		向日葵 Helianthus annuus	Chiang et al., 2006 Chiang et al., 2006
乙酸、甲酸 Acetic acid, formic acid		水稻 Oryza sativa	Liu et al., 2007
柠檬酸、乳酸、乙酸 Citric acid, lactic acid, acetic acid		秋茄 Kandelia candel	Lu et al., 2007
柠檬酸 Citric acid		玉米 Zea mays	Pinto et al., 2008 Pinto et al., 2008
苹果酸 Malic acid		高粱 Sorghum bicolor	Pinto et al., 2008 Pinto et al., 2008
草酸、酒石酸 Oxalic acid, tartaric acid	Zn	黑麦草 Lolium perenne	Xu et al., 2007
苹果酸、柠檬酸 Malic acid, citric acid	Zn	水稻 Oryza sativa	Widodo et al., 2010
草酸、苹果酸、柠檬酸 Oxalic acid, malic acid, citric acid	Cr	水稻 Oryza sativa	Zeng et al., 2008
柠檬酸、苹果酸 Citric acid, malic acid	Cu	大豆 Glycine max 小麦 Triticum aestivum	Nian et al., 2002 Nian et al., 2002
柠檬酸 Citric acid	Cu	黑麦 Secale cereale 黑小麦 Triticosecale wittmack 玉米 Zea mays	Nian et al., 2002 Nian et al., 2002 Nian et al., 2002
丙二酸、柠檬酸、琥珀酸 Malonic acid, citric acid, succinic acid	Mn	紫花苜蓿 Medicago sativa	Gherardi & Rengel, 2004

有机酸 Organic acid	重金属 Heavy metal	植物 Plant species	参考文献 Reference
乙醇酸、马来酸、乙酸、乳酸、琥珀酸 Glycolic acid, maleic acid, acetic acid, lactic acid, succinic acid	Cd	烟草 Nicotiana benthamiana	Chiang et al., 2006 Chiang et al., 2006
乙酸、马来酸、琥珀酸、苹果酸 Acetic acid, maleic acid, succinic acid, malic acid		向日葵 Helianthus annuus	Chiang et al., 2006 Chiang et al., 2006
乙酸、甲酸 Acetic acid, formic acid		水稻 Oryza sativa	Liu et al., 2007
柠檬酸、乳酸、乙酸 Citric acid, lactic acid, acetic acid		秋茄 Kandelia candel	Lu et al., 2007
柠檬酸 Citric acid		玉米 Zea mays	Pinto et al., 2008 Pinto et al., 2008
苹果酸 Malic acid		高粱 Sorghum bicolor	Pinto et al., 2008 Pinto et al., 2008
草酸、酒石酸 Oxalic acid, tartaric acid	Zn	黑麦草 Lolium perenne	Xu et al., 2007
苹果酸、柠檬酸 Malic acid, citric acid	Zn	水稻 Oryza sativa	Widodo et al., 2010
草酸、苹果酸、柠檬酸 Oxalic acid, malic acid, citric acid	Cr	水稻 Oryza sativa	Zeng et al., 2008
柠檬酸、苹果酸 Citric acid, malic acid	Cu	大豆 Glycine max 小麦 Triticum aestivum	Nian et al., 2002 Nian et al., 2002
柠檬酸 Citric acid	Cu	黑麦 Secale cereale 黑小麦 Triticosecale wittmack 玉米 Zea mays	Nian et al., 2002 Nian et al., 2002 Nian et al., 2002
丙二酸、柠檬酸、琥珀酸 Malonic acid, citric acid, succinic acid	Mn	紫花苜蓿 Medicago sativa	Gherardi & Rengel, 2004