The investigation of the alleviated effect of copper toxicity by exogenous nitric oxide in tomato plants

X.M. Cui, Y.K. Zhang, X.B. Wu and C.S. Liu
Additional contact information
X.M. Cui: College of Resources and Environment, Shandong Agricultural University, Tai'an, P.R. China
Y.K. Zhang: College of Resources and Environment, Shandong Agricultural University, Tai'an, P.R. China
X.B. Wu: College of Resources and Environment, Shandong Agricultural University, Tai'an, P.R. China
C.S. Liu: College of Resources and Environment, Shandong Agricultural University, Tai'an, P.R. China

Plant, Soil and Environment, 2010, vol. 56, issue 6, 274-281

Abstract: As a bioactive signal, nitric oxide (NO) is involved in multiple plant physiological responses, especially under some abiotic stress. Here, we investigated the effects of exogenous nitric oxide on both the reactive oxygen species (ROS) scavenging metabolism and regulating functions of plasma membrane and tonoplast in tomato plants treated with 50µM CuCl2. Copper stress induced significant accumulation of H2O2, led to serious lipid peroxidation, and finally markedly decreased shoot height and fresh weight of tomato plants. The application of 100µM sodium nitroprusside (SNP - NO donor) promoted some antioxidant enzymes, reduced accumulation of H2O2, and adjusted the activity of H+-ATPase and H+-PPase in plasma membrane or tonoplast, and significantly alleviated the growth inhibition induced by copper toxicity. On the other hand, the application of sodium ferrocyanide (an analog of SNP) and sodium nitrate or nitrite (the decomposition product of NO or its donor SNP) which did not release NO, did not show the effects of SNP. Furthermore, the effects of SNP were reverted by addition of hemoglobin (an NO scavenger). Therefore, these results indicated that exogenous NO could effectively assuage copper toxicity by physiological and biochemical response so as to maintain normal growth.

Keywords: nitric oxide (NO); copper toxicity; tomato; enzyme activity; plasma membrane; tonoplast (search for similar items in EconPapers)
Date: 2010
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
http://pse.agriculturejournals.cz/doi/10.17221/98/2009-PSE.html (text/html)
http://pse.agriculturejournals.cz/doi/10.17221/98/2009-PSE.pdf (application/pdf)
free of charge

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:56:y:2010:i:6:id:98-2009-pse

DOI: 10.17221/98/2009-PSE

Access Statistics for this article

Plant, Soil and Environment is currently edited by Kateřina Součková

More articles in Plant, Soil and Environment from Czech Academy of Agricultural Sciences
Bibliographic data for series maintained by Ivo Andrle ().