Abstract:Hydrocarbon contamination cause serious environmental damage and human health problems, therefore, to resolve this problem has been proposed diversely remediation techniques friendly with the environment i.e. bioaugmentation, biostimulation, natural attenuation and phytoremediation. Among options, the phytoremediation causes minimum alterations to soil, low cost, it has proved good eff iciency and gained public acceptation. In the present study, the capacity of Mimosa pigra to restore a contaminated soil with … Show more
“… 2019 ; Pérez-Hernández et al. 2020 ). These studies revealed both the benefits and disadvantages of M. pigra ; however, genomic and proteomic researches are required.…”
Mimosa pigra
L., also called the giant sensitive tree, is native to tropical America and has invaded Africa, Asia, and Australia. Here, we report the complete chloroplast genome of
M. pigra,
which was 165,996 bp in length and composed of a large single-copy region (LSC; 93,299 bp), a small single-copy region (SSC; 17,989 bp) and two inverted repeat regions (IRs; 27,354 bp). The complete
M. pigra
chloroplast genome included 83 protein-coding genes, 37 tRNAs and 8 rRNAs. Phylogenetic analysis using the maximum likelihood method revealed the monophyly of
M. pigra
and related taxa of the subfamily Caesalpinioideae. In comparison, the members of Papilionoideae were paraphyletic.
“… 2019 ; Pérez-Hernández et al. 2020 ). These studies revealed both the benefits and disadvantages of M. pigra ; however, genomic and proteomic researches are required.…”
Mimosa pigra
L., also called the giant sensitive tree, is native to tropical America and has invaded Africa, Asia, and Australia. Here, we report the complete chloroplast genome of
M. pigra,
which was 165,996 bp in length and composed of a large single-copy region (LSC; 93,299 bp), a small single-copy region (SSC; 17,989 bp) and two inverted repeat regions (IRs; 27,354 bp). The complete
M. pigra
chloroplast genome included 83 protein-coding genes, 37 tRNAs and 8 rRNAs. Phylogenetic analysis using the maximum likelihood method revealed the monophyly of
M. pigra
and related taxa of the subfamily Caesalpinioideae. In comparison, the members of Papilionoideae were paraphyletic.
Antecedentes: La presencia de petróleo crudo (PC) en el suelo puede conllevar la muerte de especies vegetales que no logran aclimatarse a estas condiciones.
Preguntas: ¿Cuál será la respuesta fisiológica de dos especies arbóreas creciendo en un suelo contaminado con diferentes concentraciones de PC? ¿Cuál será su plasticidad fisiológica en este contexto?
Especies de estudio: Haematoxylum campechianum L. y Tabebuia rosea (Bertol.) DC.
Sitio de estudio: Tabasco, México; 2017.
Métodos: Se evaluaron variables fisiológicas en dos especies arbóreas establecidas en suelos contaminados bajo tres concentraciones de PC (15,170 a 15,600 mg kg-1) durante 292 días; se midió la asimilación de CO2 (A), transpiración (E), eficiencia en el uso del agua (EUA), eficiencia cuántica del fotosistema II (Fv/Fm y FPSII ), tasa de transporte de electrones (TTE), disipación no fotoquímica de energía (DNE), potencial hídrico, osmótico y contenido de clorofila.
Resultados: Se encontró baja plasticidad fisiológica en ambas especies; hubo un efecto hormesis donde, en la concentración más baja de PC, los individuos presentaron un desempeño fisiológico superior comparado con plantas del tratamiento control. En T. rosea se registró un incremento en A, E, FPSII, DNE y Fv/Fm y una reducción en la TTE hacia el final del experimento en todos los tratamientos. H. campechianum presentó un incremento en la concentración de clorofila al final del mismo.
Conclusiones: Tabebuia rosea presentó mayor variabilidad en sus respuestas fisiológicas comparada con H. campechianum, lo que sugiere que la primera podría ser más vulnerable a la presencia de petróleo crudo en suelo.
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