Influence of Environmental Stress on Biomass Partitioning in Transgenic Tobacco Plants Expressing the Movement Protein of Tobacco Mosaic Virus

Balachandran, Suchandra; Hull, Richard T.; Martins, Rosemary A.; Vaadia, Yoash; Lucas, William J.

doi:10.1104/pp.114.2.475

Cited by 34 publications

(21 citation statements)

References 19 publications

(29 reference statements)

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“…3 More speci®cally, in tobacco plants it has been demonstrated that the nutritional state, especially the concentrations of N, P and K, can in¯uence the production and distribution of biomass. 4 In addition to these macronutrients, other elements can noticeably alter processes and essential nutrient concentrations in tobacco plants. For example, the micronutrient B 5 and the macronutrient Ca appear to exert a strong in¯uence on these processes and parameters.…”

Section: Introductionmentioning

confidence: 99%

Effect of calcium on mineral nutrient uptake and growth of tobacco

et al. 2001

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The aim of this work was to analyse the dynamics of the nutritional state and biomass production in tobacco plants resulting from the application of various calcium levels (Ca1, 1.25 mol m À3 CaCl 2 ; Ca2, 2.50 mol m À3 CaCl 2 ; Ca3, 5 mol m À3 CaCl 2 ) in the culture medium. Tobacco plants were grown under controlled conditions and submitted to regular fertilisation with macro-and micronutrients. The concentrations of Ca, organic N, P, K, Na, Mg, Fe, Mn, Zn, Cu, Cl and B were determined in the roots and leaves. As expected, Ca accumulated progressively with increasing concentration of this element in the culture medium. There was a slight rise in the concentration of organic N but hardly any change in the concentrations of K and Na. In contrast, increasing Ca application caused a gradual decline in P and Mg concentrations. In terms of micronutrient concentrations, Fe, Mn, Zn, Cl and B were in¯uenced positively by Ca treatment. A noteworthy synergetic relationship was found between Ca and B. In contrast, the Cu concentration in the roots declined signi®cantly with increasing Ca application. The effect of Ca on biomass production depended on the organ analysed, since the dry matter content diminished in the roots but was augmented slightly in the leaves.

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Section: Introductionmentioning

confidence: 99%

Effect of calcium on mineral nutrient uptake and growth of tobacco

et al. 2001

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“…While metabolic changes associated with infection by fungi and bacteria have been widely documented (Bolton, 2009), little is known about the effect of plant viruses on host primary metabolites and the influence of these changes on the onset of infection and symptom expression. Traditionally, most studies were devoted to elucidate how plant viruses interfere with carbohydrate metabolism (Herbers et al, 1996;Almon et al, 1997;Balachandran et al, 1997;Herbers et al, 2000;Shalitin and Wolf, 2000). More recently, the advent of metabolomics has allowed the characterization of plant metabolite profiles thorough the detection of a large number of metabolites in target organs (Lisec et al, 2006;Kim et al, 2010).…”

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confidence: 99%

Virus-Induced Alterations in Primary Metabolism Modulate Susceptibility toTobacco rattle virusin Arabidopsis

et al. 2014

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During compatible virus infections, plants respond by reprogramming gene expression and metabolite content. While gene expression studies are profuse, our knowledge of the metabolic changes that occur in the presence of the virus is limited. Here, we combine gene expression and metabolite profiling in Arabidopsis (Arabidopsis thaliana) infected with Tobacco rattle virus (TRV) in order to investigate the influence of primary metabolism on virus infection. Our results revealed that primary metabolism is reconfigured in many ways during TRV infection, as reflected by significant changes in the levels of sugars and amino acids. Multivariate data analysis revealed that these alterations were particularly conspicuous at the time points of maximal accumulation of TRV, although infection time was the dominant source of variance during the process. Furthermore, TRV caused changes in lipid and fatty acid composition in infected leaves. We found that several Arabidopsis mutants deficient in branched-chain amino acid catabolism or fatty acid metabolism possessed altered susceptibility to TRV. Finally, we showed that increments in the putrescine content in TRV-infected plants correlated with enhanced tolerance to freezing stress in TRV-infected plants and that impairment of putrescine biosynthesis promoted virus multiplication. Our results thus provide an interesting overview for a better understanding of the relationship between primary metabolism and virus infection.

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“…Decrease in relative water contents (RWC) was also observed (Table 2). Deficiency in water contents causes a decrease in leaf turgor or hydraulic pressure on which various physiological processes and morphological traits depend like as stomatal opening and growth of leaves (Tecsi et al, 1996;Balachandran et al, 1997). Furthermore, the BBTV infection in banana caused a decrease in green pigments such as chlorophyll (Chl) a, b and ab.…”

Section: Resultsmentioning

confidence: 99%

“…Virus-free plants show relatively better vegetative growth in field, but reduce with viral infection due to decreased photosynthetic surface, as well as respiration rate (Balachandran et al, 1997;Guo et al, 2005). In general, the plant growth of virus infected plants is limited because of inhibitions of biological system in communication to growth related metabolic processes.…”

Section: Introductionmentioning

confidence: 99%