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Euphorbia tirucalli L.-comprehensive characterization of a drought tolerant plant with a potential as biofuel source.

Hastilestari BR, Mudersbach M, Tomala F, Vogt H, Biskupek-Korell B, Van Damme P, Guretzki S, Papenbrock J - PLoS ONE (2013)

Bottom Line: Of late, decrease in mineral oil supplies has stimulated research on use of biomass as an alternative energy source.Climate change has brought problems such as increased drought and erratic rains.Malate measurement indicates that there is induction of CAM in leaves following drought stress.

View Article: PubMed Central - PubMed

Affiliation: Institute of Botany, Gottfried Wilhelm Leibniz University Hannover, Hannover, Germany.

ABSTRACT
Of late, decrease in mineral oil supplies has stimulated research on use of biomass as an alternative energy source. Climate change has brought problems such as increased drought and erratic rains. This, together with a rise in land degeneration problems with concomitant loss in soil fertility has inspired the scientific world to look for alternative bio-energy species. Euphorbia tirucalli L., a tree with C3/CAM metabolism in leaves/stem, can be cultivated on marginal, arid land and could be a good alternative source of biofuel. We analyzed a broad variety of E. tirucalli plants collected from different countries for their genetic diversity using AFLP. Physiological responses to induced drought stress were determined in a number of genotypes by monitoring growth parameters and influence on photosynthesis. For future breeding of economically interesting genotypes, rubber content and biogas production were quantified. Cluster analysis shows that the studied genotypes are divided into two groups, African and mostly non-African genotypes. Different genotypes respond significantly different to various levels of water. Malate measurement indicates that there is induction of CAM in leaves following drought stress. Rubber content varies strongly between genotypes. An investigation of the biogas production capacities of six E. tirucalli genotypes reveals biogas yields higher than from rapeseed but lower than maize silage.

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Rubber content of eight E.tirucalli genotypes.Each bar illustrates the mean (n = 3). Vertical error bars denote standard error of mean (SEM).
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pone-0063501-g006: Rubber content of eight E.tirucalli genotypes.Each bar illustrates the mean (n = 3). Vertical error bars denote standard error of mean (SEM).

Mentions: E. tirucalli can be a source of rubber. The rubber content analysis was done by NMR for eight genotypes in our collection, including Morocco and Senegal. The analysis showed strong differences in the concentration of rubber between the genotypes (Fig. 6). Senegal, with 10.74 mg g−1 fresh weight, had the highest amount of rubber among genotypes tested, followed by USA 8.80 mg g−1 fresh weight. The lowest rubber concentration was found in genotype Togo which had 1.42 mg g−1 fresh weight. There is no correlation of rubber content and genotype classification (Fig. 1 and Fig. 6), at least in greenhouse conditions.


Euphorbia tirucalli L.-comprehensive characterization of a drought tolerant plant with a potential as biofuel source.

Hastilestari BR, Mudersbach M, Tomala F, Vogt H, Biskupek-Korell B, Van Damme P, Guretzki S, Papenbrock J - PLoS ONE (2013)

Rubber content of eight E.tirucalli genotypes.Each bar illustrates the mean (n = 3). Vertical error bars denote standard error of mean (SEM).
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3643915&req=5

pone-0063501-g006: Rubber content of eight E.tirucalli genotypes.Each bar illustrates the mean (n = 3). Vertical error bars denote standard error of mean (SEM).
Mentions: E. tirucalli can be a source of rubber. The rubber content analysis was done by NMR for eight genotypes in our collection, including Morocco and Senegal. The analysis showed strong differences in the concentration of rubber between the genotypes (Fig. 6). Senegal, with 10.74 mg g−1 fresh weight, had the highest amount of rubber among genotypes tested, followed by USA 8.80 mg g−1 fresh weight. The lowest rubber concentration was found in genotype Togo which had 1.42 mg g−1 fresh weight. There is no correlation of rubber content and genotype classification (Fig. 1 and Fig. 6), at least in greenhouse conditions.

Bottom Line: Of late, decrease in mineral oil supplies has stimulated research on use of biomass as an alternative energy source.Climate change has brought problems such as increased drought and erratic rains.Malate measurement indicates that there is induction of CAM in leaves following drought stress.

View Article: PubMed Central - PubMed

Affiliation: Institute of Botany, Gottfried Wilhelm Leibniz University Hannover, Hannover, Germany.

ABSTRACT
Of late, decrease in mineral oil supplies has stimulated research on use of biomass as an alternative energy source. Climate change has brought problems such as increased drought and erratic rains. This, together with a rise in land degeneration problems with concomitant loss in soil fertility has inspired the scientific world to look for alternative bio-energy species. Euphorbia tirucalli L., a tree with C3/CAM metabolism in leaves/stem, can be cultivated on marginal, arid land and could be a good alternative source of biofuel. We analyzed a broad variety of E. tirucalli plants collected from different countries for their genetic diversity using AFLP. Physiological responses to induced drought stress were determined in a number of genotypes by monitoring growth parameters and influence on photosynthesis. For future breeding of economically interesting genotypes, rubber content and biogas production were quantified. Cluster analysis shows that the studied genotypes are divided into two groups, African and mostly non-African genotypes. Different genotypes respond significantly different to various levels of water. Malate measurement indicates that there is induction of CAM in leaves following drought stress. Rubber content varies strongly between genotypes. An investigation of the biogas production capacities of six E. tirucalli genotypes reveals biogas yields higher than from rapeseed but lower than maize silage.

Show MeSH
Related in: MedlinePlus