Understanding plant-microbe interactions for phytoremediation of petroleum-polluted soil.

Plant-microbe interactions are considered to be important processes determining the efficiency of phytoremediation of petroleum pollution, however relatively little is known about how these interactions are influenced by petroleum pollution. In this experimental study using a microcosm approach, we...

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Autores principales:	Ming Nie, Yijing Wang, Jiayi Yu, Ming Xiao, Lifen Jiang, Ji Yang, Changming Fang, Jiakuan Chen, Bo Li
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2011
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/94c9cbdacb73498fa6e9247dd5fe553d
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spelling	oai:doaj.org-article:94c9cbdacb73498fa6e9247dd5fe553d2021-11-18T06:57:09ZUnderstanding plant-microbe interactions for phytoremediation of petroleum-polluted soil.1932-620310.1371/journal.pone.0017961https://doaj.org/article/94c9cbdacb73498fa6e9247dd5fe553d2011-03-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/21437257/?tool=EBIhttps://doaj.org/toc/1932-6203Plant-microbe interactions are considered to be important processes determining the efficiency of phytoremediation of petroleum pollution, however relatively little is known about how these interactions are influenced by petroleum pollution. In this experimental study using a microcosm approach, we examined how plant ecophysiological traits, soil nutrients and microbial activities were influenced by petroleum pollution in Phragmites australis, a phytoremediating species. Generally, petroleum pollution reduced plant performance, especially at early stages of plant growth. Petroleum had negative effects on the net accumulation of inorganic nitrogen from its organic forms (net nitrogen mineralization (NNM)) most likely by decreasing the inorganic nitrogen available to the plants in petroleum-polluted soils. However, abundant dissolved organic nitrogen (DON) was found in petroleum-polluted soil. In order to overcome initial deficiency of inorganic nitrogen, plants by dint of high colonization of arbuscular mycorrhizal fungi might absorb some DON for their growth in petroleum-polluted soils. In addition, through using a real-time polymerase chain reaction method, we quantified hydrocarbon-degrading bacterial traits based on their catabolic genes (i.e. alkB (alkane monooxygenase), nah (naphthalene dioxygenase) and tol (xylene monooxygenase) genes). This enumeration of target genes suggests that different hydrocarbon-degrading bacteria experienced different dynamic changes during phytoremediation and a greater abundance of alkB was detected during vegetative growth stages. Because phytoremediation of different components of petroleum is performed by different hydrocarbon-degrading bacteria, plants' ability of phytoremediating different components might therefore vary during the plant life cycle. Phytoremediation might be most effective during the vegetative growth stages as greater abundances of hydrocarbon-degrading bacteria containing alkB and tol genes were observed at these stages. The information provided by this study enhances our understanding of the effects of petroleum pollution on plant-microbe interactions and the roles of these interactions in the phytoremediation of petroleum-polluted soil.Ming NieMing NieYijing WangJiayi YuMing XiaoLifen JiangJi YangChangming FangJiakuan ChenBo LiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 6, Iss 3, p e17961 (2011)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ming Nie Ming Nie Yijing Wang Jiayi Yu Ming Xiao Lifen Jiang Ji Yang Changming Fang Jiakuan Chen Bo Li Understanding plant-microbe interactions for phytoremediation of petroleum-polluted soil.
description	Plant-microbe interactions are considered to be important processes determining the efficiency of phytoremediation of petroleum pollution, however relatively little is known about how these interactions are influenced by petroleum pollution. In this experimental study using a microcosm approach, we examined how plant ecophysiological traits, soil nutrients and microbial activities were influenced by petroleum pollution in Phragmites australis, a phytoremediating species. Generally, petroleum pollution reduced plant performance, especially at early stages of plant growth. Petroleum had negative effects on the net accumulation of inorganic nitrogen from its organic forms (net nitrogen mineralization (NNM)) most likely by decreasing the inorganic nitrogen available to the plants in petroleum-polluted soils. However, abundant dissolved organic nitrogen (DON) was found in petroleum-polluted soil. In order to overcome initial deficiency of inorganic nitrogen, plants by dint of high colonization of arbuscular mycorrhizal fungi might absorb some DON for their growth in petroleum-polluted soils. In addition, through using a real-time polymerase chain reaction method, we quantified hydrocarbon-degrading bacterial traits based on their catabolic genes (i.e. alkB (alkane monooxygenase), nah (naphthalene dioxygenase) and tol (xylene monooxygenase) genes). This enumeration of target genes suggests that different hydrocarbon-degrading bacteria experienced different dynamic changes during phytoremediation and a greater abundance of alkB was detected during vegetative growth stages. Because phytoremediation of different components of petroleum is performed by different hydrocarbon-degrading bacteria, plants' ability of phytoremediating different components might therefore vary during the plant life cycle. Phytoremediation might be most effective during the vegetative growth stages as greater abundances of hydrocarbon-degrading bacteria containing alkB and tol genes were observed at these stages. The information provided by this study enhances our understanding of the effects of petroleum pollution on plant-microbe interactions and the roles of these interactions in the phytoremediation of petroleum-polluted soil.
format	article
author	Ming Nie Ming Nie Yijing Wang Jiayi Yu Ming Xiao Lifen Jiang Ji Yang Changming Fang Jiakuan Chen Bo Li
author_facet	Ming Nie Ming Nie Yijing Wang Jiayi Yu Ming Xiao Lifen Jiang Ji Yang Changming Fang Jiakuan Chen Bo Li
author_sort	Ming Nie
title	Understanding plant-microbe interactions for phytoremediation of petroleum-polluted soil.
title_short	Understanding plant-microbe interactions for phytoremediation of petroleum-polluted soil.
title_full	Understanding plant-microbe interactions for phytoremediation of petroleum-polluted soil.
title_fullStr	Understanding plant-microbe interactions for phytoremediation of petroleum-polluted soil.
title_full_unstemmed	Understanding plant-microbe interactions for phytoremediation of petroleum-polluted soil.
title_sort	understanding plant-microbe interactions for phytoremediation of petroleum-polluted soil.
publisher	Public Library of Science (PLoS)
publishDate	2011
url	https://doaj.org/article/94c9cbdacb73498fa6e9247dd5fe553d
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Understanding plant-microbe interactions for phytoremediation of petroleum-polluted soil.

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