Repositorio
Institucional

Jorquera, Milko A.

Campos, Marco

Acuna, Jacquelinne J.

Rilling, Joaquin, I

Gonzalez-Gonzalez, Susett

Pena-Cortes, Fernando

Jaisi, Deb P.

Hollenback, Anthony

Ogram, Andrew

Bai, Junhong

Zhang, Ling

Xiao, Rong

Spatiotemporal distributions and relationships of phosphorus content, phosphomonoesterase activity, and bacterial phosphomonoesterase genes in sediments from a eutrophic brackish water lake in Chile

ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD

JOURNAL OF ENVIRONMENTAL MANAGEMENT

en

Phosphorus (P) cycling by microbial activity is highly relevant in the eutrophication of lakes. In this context, the contents of organic (Po) and inorganic (Pi) phosphorus, the activity of acid (ACP) and alkaline (ALP) phosphomonoesterase (Pase), and the abundances of bacterial Pase genes (phoD, phoC, and phoX) were studied in sediments from Budi Lake, a eutrophic coastal brackish water lake in Chile. Our results showed spatiotemporal variations in P fractions, Pase activities, and Pase gene abundances. In general, our results showed higher contents of Pi (110-144 mg kg- 1), Po (512-576 mg kg-1), and total P (647-721 mg kg- 1) in sediments from the more anthropogenized sampling sites in summer compared with those values of Pi (86-127 mg kg- 1), Po (363-491 mg kg- 1) and total P (449-618 mg kg- 1) in less anthropogenized sampling sites in winter. In concordance, sediments showed higher Pase activities (mu g nitrophenyl phosphate g-1 h-1) in sediments from the more anthropogenized sampling sites (9.7-22.7 for ACP and 5.9 to 9.6 for ALP) compared with those observed in less anthropogenized sampling sites in winter (4.2-12.9 for ACP and 0.3 to 6.7 for ALP). Higher abundances (gene copy g-1 sediment) of phoC (8.5-19 x 108), phoD (9.2-47 x 106), and phoX (8.5-26 x 106) genes were also found in sediments from the more anthropogenized sampling sites in summer compared with those values of phoC (0.1-1.1 x 108), phoD (1.4-2.4 x 106) and phoX (0.7-1.2 x 106) genes in the less anthropogenized sites in winter. Our results also showed a positive correlation between P contents, Pase activities, and abundances of bacterial Pase genes, independent of seasonality. The present study provided information on the microbial activity involved in P cycling in sediments of Budi Lake, which may be used in further research as indicators for the monitoring of eutrophication of lakes.

artículo original

This study was funded by The National Fund for Scientific and Technological Development (FONDECYT) postdoc fellowship no. 3180198 (to M.A.C.) , by the China-Chile Joint Projects on Water Resources Management NSFC-ANID (Grant No. 51961125201 in China and NSFC190012 in Chile) (to M.A.J., J.J.A., M.A.C., and R.X.) , by INTERNATIONAL COOPERATION Project Chile-USA from National Research and Development Agency of Chile (ANID) code REDES190079 (to M.A.J., M.A.C., A. O, and D.J.) , by FONDECYT project no. 1201386 and 1221228 (to M.A.J. and J.J.A.) , and by Science and Technology Research Partnership for Sustainable Development (SATREPS JICA/JST) project code JPMJSA1705 (to I.R., J.J.A, and M.A.J.) .)

Este estudio fue financiado por la beca postdoctoral no. 3180198 (a M.A.C.), por los Proyectos Conjuntos China-Chile sobre Gestión de Recursos Hídricos NSFC-ANID (Subvención No. 51961125201 en China y NSFC190012 en Chile) (a M.A.J., J.J.A., M.A.C. y R.X.), por Proyecto COOPERACIÓN INTERNACIONAL Chile- EE.UU. de la Agencia Nacional de Investigación y Desarrollo de Chile (ANID) código REDES190079 (a M.A.J., M.A.C., A. O y D.J.), por proyecto FONDECYT no. 1201386 y 1221228 (a M.A.J. y J.J.A.), y por el código de proyecto JPMJSA1705 de la Asociación de Investigación en Ciencia y Tecnología para el Desarrollo Sostenible (SATREPS JICA/JST) (a I.R., J.J.A y M.A.J.).

10.1016/j.jenvman.2022.115906

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Bacterial community

Eutrophication

Lake sediments

Phosphomonoesterase

Phosphorus cycling

ORGANIC PHOSPHORUS

ALKALINE-PHOSPHATASE

SOIL

FRACTIONATION

FORMS

QUANTIFICATION

SPECIATION

DIVERSITY

COMMUNITY

NITROGEN

Ciencias Ambientales

Comunidad bacteriana

Eutrofización

Sedimentos lacustres

Fosfomonoesterasa

Ciclo del fósforo

FÓSFORO ORGÁNICO

FOSFATASA ALCALINA

SUELO

FRACCIONAMIENTO

FORMAS

CUANTIFICACIÓN

ESPECIACIÓN

DIVERSIDAD

COMUNIDAD

NITRÓGENO

Spatiotemporal distributions and relationships of phosphorus content, phosphomonoesterase activity, and bacterial phosphomonoesterase genes in sediments from a eutrophic brackish water lake in Chile

artículo original

version publicada

0

metadata

metadata

ANID-FONDECYT 3180198

ANID NSFC 51961125201

ANID-REDES 190079

SATREPS JPMJSA1705

ANID-FONDECYT 1201386

ANID-FONDECYT 1221228

ANID NSFC190012

ANID FONDECYT 3180198

ANID REDES 190079

ANID FONDECYT 1201386

ANID FONDECYT 1221228

WOS:000848489200001