Tropical soils with high aluminum concentrations cause oxidative stress in two tomato genotypes

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• 作者：Roberta Corrêa Nogueirol…
• 关键词：Soil acidity ; Toxic element ; Aluminum ; Antioxidant enzymes ; Weathered soils
• 刊名：Environmental Monitoring and Assessment
• 出版年：2015
• 出版时间：March 2015
• 年：2015
• 卷：187
• 期：3
• 全文大小：2,962 KB
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  2. Arruda, M. A. Z., & Azevedo, R. A. (2009). Metallomics and chemical speciation: towards a better understanding of metal-induced stress in plants. / Annals of Applied Biology, 155, 301-07. doi:10.1111/j.1744-7348.2009.00371.× . CrossRef
  3. Arruda, S. C. C., Barbosa, H. S., Azevedo, R. A., & Arruda, M. A. Z. (2013). Comparative studies focusing on transgenic through / cp4EPSPS gene and non-transgenic soybean plants: an analysis of protein species and enzymes. / Journal of Proteomics, 93, 107-16. doi:10.1016/j.jprot.2013.05.039 . CrossRef
  4. Azevedo, R. A., Alas, R. M., Smith, R. J., & Lea, P. J. (1998). Response of antioxidant enzymes to transfer from elevated carbon dioxide to air and ozone fumigation, in the leaves and roots of wild-type and a catalase-deficient mutant of barley. / Physiologia Plantarum, 104, 280-92. doi:10.1034/j.1399-3054.1998.1040217.× . CrossRef
  5. Boaretto, L. F., Carvalho, G., Borgo, L., Creste, S., Landell, M. G. A., Mazzafera, P., et al. (2014). Water stress reveals differential antioxidant responses of tolerant and non-tolerant sugarcane genotypes. / Plant Physiology and Biochemistry, 74, 165-75. doi:10.1016/j.plaphy.2013.11.016 . CrossRef
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  10. Cia, M. C., Guimar?es, A. C. R., Medici, L. O., Chabregas, S. M., & Azevedo, R. A. (2012). Antioxidant responses to water deficit by drought-tolerant and -sensitive sugarcane varieties. / Annals of Applied Biology, 161, 313-24. doi:10.1111/j.1744-7348.2012.00575.× . CrossRef
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• 作者单位：Roberta Corrêa Nogueirol (1)
  Francisco Antonio Monteiro (2)
  Priscila Lupino Grat?o (3)
  Lucélia Borgo (1)
  Ricardo Antunes Azevedo (1)
  
  1. Departamento de Genética, Escola Superior de Agricultura Luiz de Queiroz, Universidade de S?o Paulo, Av. Pádua Dias 11, Piracicaba, 13418-900, Brazil
  2. Departamento de Ciência do Solo, Escola Superior de Agricultura Luiz de Queiroz, Universidade de S?o Paulo, Av. Pádua Dias 11, Piracicaba, 13418-260, Brazil
  3. Departamento de Biologia Aplicada à Agropecuária, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista, Jaboticabal, SP, 14884-900, Brazil
  
• 刊物类别：Earth and Environmental Science
• 刊物主题：Environment
  Monitoring, Environmental Analysis and Environmental Ecotoxicology
  Ecology
  Atmospheric Protection, Air Quality Control and Air Pollution
  Environmental Management
  
• 出版者：Springer Netherlands
• ISSN：1573-2959

文摘

Tropical and subtropical soils are usually acidic and have high concentrations of aluminum (Al). Aluminum toxicity in plants is caused by the high affinity of the Al cation for cell walls, membranes, and metabolites. In this study, the response of the antioxidant-enzymatic system to Al was examined in two tomato genotypes: Solanum lycopersicum var. esculentum (Calabash Rouge) and Solanum lycopersicum var. cerasiforme (CNPH 0082) grown in tropical soils with varying levels of Al. Plant growth; activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), guaiacol peroxidase (GPOX), and glutathione reductase (GR) enzymes; stress-indicating compounds (malondialdehyde (MDA) and hydrogen peroxide); and morphology (root length and surface area) were analyzed. Increased levels of Al in soils were correlated with reduced shoot and root biomass and with reduced root length and surface area. Calabash Rouge exhibited low Al concentrations and increased growth in soils with the highest levels of Al. Plants grown in soils with high availability of Al exhibited higher levels of stress indicators (MDA and hydrogen peroxide) and higher enzyme activity (CAT, APX, GPOX, and GR). Calabash Rouge absorbed less Al from soils than CNPH 0082, which suggests that the genotype may possess mechanisms for Al tolerance.