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dc.contributor.author
Sesto Cabral, María Eugenia
dc.contributor.author
Schabes, Fanny Isabel
dc.contributor.author
Sigstad, Emma Elizabeth
dc.date.available
2018-08-07T19:01:10Z
dc.date.issued
2010-01
dc.identifier.citation
Sesto Cabral, María Eugenia; Schabes, Fanny Isabel; Sigstad, Emma Elizabeth; A calorimetric study of plant?plant and plant?soil interactions of extracts from Ixorhea tschudiana; Elsevier Science; Thermochimica Acta; 497; 1-2; 1-2010; 14-20
dc.identifier.issn
0040-6031
dc.identifier.uri
http://hdl.handle.net/11336/54466
dc.description.abstract
The effect of the CHCl3 and MeOH extracts from aerial parts from the Northwestern Argentina endemic species Ixorhea tschudiana Fenzl. on germination of the dicot tomato and the monoct onion and on soil microbial activity was studied by calorimetric and calorespirometric experiments. The CHCl3 extract inhibited seedling growth of tomato which increased with increasing concentrations. Seeds imbibed with 250 mg dm-3 extract germinated 24 h later than control and those imbibed with 100 and 500 mg dm-3 extract. This was reflected in the calculated low specific seedling growth rate (pSGΔHB) as determined from calorespirometric experiments. On the other hand, seedlings obtained in 500 mg dm-3 extract showed shorter and thicker hairy roots than control with significantly higher pSGΔHB. Probably, the extract induces inhibition of water uptake by seedling roots. Germination was reduced 50% in onion seeds imbibed with 500 mg dm-3 CHCl3 extract which apparently is due to higher rate of imbibition during the first stages as determined for calorimetry. On the other hand, 83 and 250 mg kg-1 of the MeOH and CHCl3 extract seem to selectively inhibit the growth of certain microorganisms and to enhance the activity of soil actinomycetes. Two actinobacteria were isolated from soil treated with these concentrations of both extracts: Kocuria sp. and Kocuria rosea; this latter species is known as a keratinolytic agent and seems to degrade complex carbon compounds of the soil and those incorporated by the MeOH extract. Both Kocuria specie seem to be beneficial for the soil converting substrate into biomass and thus I. tschudiana could be used as a soil phytoremediator. © 2009 Elsevier B.V. All rights reserved.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Calorimetry
dc.subject
Ixorhea Tschudiana
dc.subject
Seed Germination
dc.subject
Soil Microbial Activity
dc.subject.classification
Ingeniería Química
dc.subject.classification
Ingeniería Química
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
A calorimetric study of plant?plant and plant?soil interactions of extracts from Ixorhea tschudiana
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-08-06T14:25:42Z
dc.journal.volume
497
dc.journal.number
1-2
dc.journal.pagination
14-20
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Sesto Cabral, María Eugenia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
dc.description.fil
Fil: Schabes, Fanny Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
dc.description.fil
Fil: Sigstad, Emma Elizabeth. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán. Instituto de Química del Noroeste. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química del Noroeste; Argentina
dc.journal.title
Thermochimica Acta
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1016/j.tca.2009.08.003
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0040603109003190


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