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Insight into the role of grafting and arbuscular mycorrhiza on cadmium stress tolerance in tomato

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Title Insight into the role of grafting and arbuscular mycorrhiza on cadmium stress tolerance in tomato
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Creator P. Kumar, L. Lucini, Y. Rouphael, M. Cardarelli, R.M. Kalunke and G. Colla
 
Subject antioxidant enzymes, cadmium, gene expression, metabolomic, rootstock, Solanum lycopersicum L.
 
Description Not Available
Physiological, biochemical, metabolite changes, and gene expression analysis of greenhouse tomato (Solanum lycopersicum L.) were investigated in two grafting combinations (self-grafted ‘Ikram’ and ‘Ikram’ grafted onto interspecific hybrid rootstock ‘Maxifort’), with and without arbuscular mycorrhizal (AM), exposed to 0 and 25μM Cd. Tomato plants responded to moderate Cadmium (Cd) concentration by decreasing yield and crop growth parameters due to the accumulation of Cd in leaf tissue, inhibition of the PSII activity,reduced nutrients translocation, and also to the oxidative stress as evidenced by enhanced hydrogen peroxide (H2O2) generation, ion leakage, and lipidperoxidation. AM inoculation significantly enhanced the metal concentration in shoots and reduced growth and yield. The Ikram/Maxifort combination induced higher antioxidant enzymes, higher accumulation of proline and reduction of lipid peroxidation products. This suggests that the use of Maxifort rootstock in tomato has a high reactive oxygen species scavenging activity since lower H2O2 concentrations were observed in the presence of Cd. The higher crop performance of Ikram/Maxifort in comparison to Ikram/Ikram combination was also due to the improved nutritional status (higher P, K, Ca, Fe, Mn, and Zn) and increased availability of metabolites involved in cadmium tolerance(phytochelatin PC2, fructans, and inulins). The up-regulation of LeNRAMP3 gene in leaf of Ikram/Maxifort could explain the better nutritional status of interspecific grafting combination (higher Fe, Mn, and Zn).
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Date 2018-11-13T11:48:30Z
2018-11-13T11:48:30Z
2015-06-26
 
Type Research Paper
 
Identifier Kumar P, Lucini L, Rouphael Y, Cardarelli M, Kalunke RM and Colla G (2015) Insight into the role of graftirng and arbuscular mycorrhiza on cadmium stress tolerance in tomato. Front. PlantSci. 6:477. doi:10.3389/fpls.2015.00477
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http://krishi.icar.gov.in/jspui/handle/123456789/10976
 
Language English
 
Relation Not Available;
 
Publisher Frontiers Media, Switzerland