eHALOPH - Halophytes Database

Authors	Hernandez-del Amo, E; Dolinova, I; la Ramis-Jorba, G; Gich, F; Baneras, L
Author Full Name	Hernandez-del Amo, Elena; Dolinova, Iva; la Ramis-Jorba, Gal; Gich, Frederic; Baneras, Lluis
Title	Limited effect of radial oxygen loss on ammonia oxidizers in Typha angustifolia root hairs
Source	SCIENTIFIC REPORTS
Language	English
Document Type	Article
Keywords Plus	WASTE-WATER TREATMENT; CONSTRUCTED WETLANDS; NITRIFICATION-DENITRIFICATION; MICROBIAL COMMUNITIES; INTERNAL AERATION; NITROGEN REMOVAL; PLANT; RHIZOSPHERE; MACROPHYTES; BACTERIAL
Abstract	The benefits of plant-microbe interactions have been exploited extensively for nutrient removal. Radial oxygen loss in aquatic macrophytes potentially promotes nitrification and accelerates nitrogen removal through coupled nitrification-denitrification process. Nitrification is likely the limiting activity for an effective nitrogen removal in wetlands. In this work, we have quantified the effect of radial oxygen losses in Typha angustifolia plants in environments of contrasting salinities, including a temporary lagoon, a constructed wetland, and a river estuary. In all sites, radial oxygen diffusion occurred mainly at a narrow band, from 1 to 5 cm from the root tip, and were almost absent at the tip and basal sections of the root (> 5 cm). Root sections with active oxygen diffusion tended to show higher bacterial and archaeal densities in the rhizoplane according to 16S rRNA gene abundance data, except at higher salinities. Archaeal amoA /bacterial amoA gene ratios were highly variable among sites. Archaeal nitrifiers were only favoured over bacteria on the root surface of Typha collected from the constructed wetland. Collectively, radial oxygen loss had little effect on the nitrifying microbial community at the smaller scale (differences according to root-section), and observed differences were more likely related to prevailing physicochemical conditions of the studied environments or to longterm effects of the root microenvironment (root vs sediment comparisons).
Author Address	[Hernandez-del Amo, Elena; la Ramis-Jorba, Gal; Gich, Frederic; Baneras, Lluis] Univ Girona, Inst Aquat Ecol IEA, Grp Mol Microbial Ecol, Edifici Aulari Comu LEAR, Girona 17003, Catalonia, Spain; [Dolinova, Iva] Tech Univ Liberec, Inst Nanomat Adv Technol & Innovat, Studentska 2, Liberec 46117, Czech Republic; [la Ramis-Jorba, Gal] Ctr Tecnol Leitat, Innovacio 2, Terrassa 08225, Spain
Reprint Address	Baneras, L (corresponding author), Univ Girona, Inst Aquat Ecol IEA, Grp Mol Microbial Ecol, Edifici Aulari Comu LEAR, Girona 17003, Catalonia, Spain.
E-mail Address	lluis.banyeras@udg.edu
ORCID Number	Hernandez-del Amo, Elena/0000-0001-9190-4221
Funding Agency and Grant Number	University of Girona [MPCUdG2016/121, UdG PONT2019/09]; Catalan Government [2017SGR-548]
Funding Text	Authors want to acknowledge fruitful discussions with Prof. Hans Brix for fixing up a useful set-up for estimating potential -O2 diffusion rates along the root axis. Dr. Sara Ramio-Pujol is acknowledged for assisting in field work and initial processing of samples. EHdA received a grant from the University of Girona (IF-UDG2013). This work was funded by University of Girona (Projects MPCUdG2016/121 and UdG PONT2019/09). IEA has been recognised as a consolidated research group by the Catalan Government (2017SGR-548).
Publisher	NATURE RESEARCH
Publisher City	BERLIN
Publisher Address	HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY
ISSN	2045-2322
29-Character Source Abbreviation	SCI REP-UK
ISO Source Abbreviation	Sci Rep
Publication Date	SEP 24
Year Published	2020
Volume	10
Issue	1
Article Number	15694
Digital Object Identifier (DOI)	10.1038/s41598-020-72653-9
Page Count	13
Web of Science Category	Multidisciplinary Sciences
Subject Category	Science & Technology - Other Topics
Document Delivery Number	QD2RG
Unique Article Identifier	WOS:000615371600011
Plants associated with this reference	Typha angustifolia