Front. Plant Sci. Frontiers in Plant Science Front. Plant Sci. 1664-462X Frontiers Media S.A. 10.3389/fpls.2020.637797 Plant Science Correction Corrigendum: A Plant Gene Encoding One-Heme and Two-Heme Hemoglobins With Extreme Reactivities Toward Diatomic Gases and Nitrite Villar Irene 1 Larrainzar Estíbaliz 2 Milazzo Lisa 3 Pérez-Rontomé Carmen 1 Rubio Maria C. 1 Smulevich Giulietta 3 Martínez Jesús I. 4 Wilson Michael T. 5 Reeder Brandon 5 Huertas Raul 6 Abbruzzetti Stefania 7 Udvardi Michael 6 Becana Manuel 1 * 1Departamento de Nutrición Vegetal, Estación Experimental de Aula Dei, Consejo Superior de Investigaciones Científicas (CSIC), Zaragoza, Spain 2Department of Sciences, Institute for Multidisciplinary Applied Biology, Campus Arrosadía, Universidad Pública de Navarra, Pamplona, Spain 3Dipartimento di Chimica “Ugo Schiff”, Università di Firenze, Florence, Italy 4Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC, Zaragoza, Spain 5School of Life Sciences, Essex University, Wivenhoe Park, Colchester, United Kingdom 6Noble Research Institute LLC, Ardmore, OK, United States 7Dipartimento di Scienze Matematiche, Fisiche e Informatiche, Università di Parma, Parma, Italy

Edited and reviewed by: Maurizio Chiurazzi, National Research Council (CNR), Italy

 *Correspondence: Manuel Becana becana@eead.csic.es

This article was submitted to Plant Symbiotic Interactions, a section of the journal Frontiers in Plant Science

 25 01 2021 2020 11 637797 04 12 2020 22 12 2020 Copyright © 2021 Villar, Larrainzar, Milazzo, Pérez-Rontomé, Rubio, Smulevich, Martínez, Wilson, Reeder, Huertas, Abbruzzetti, Udvardi and Becana. 2021 Villar, Larrainzar, Milazzo, Pérez-Rontomé, Rubio, Smulevich, Martínez, Wilson, Reeder, Huertas, Abbruzzetti, Udvardi and Becana

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 A Corrigendum on A Plant Gene Encoding One-Heme and Two-Heme Hemoglobins With Extreme Reactivities Toward Diatomic Gases and Nitrite by Villar, I., Larrainzar, E., Milazzo, L., Pérez-Rontomé, C., Rubio, M. C., Smulevich, G., et al. (2020). Front. Plant Sci. 11:600336. doi: 10.3389/fpls.2020.600336 Medicago truncatula nitric oxide symbiosis phytoglobins nodule leghemoglobin nitrate hypoxia

In the original article, there were three errors. The concentrations of antibiotics should be expressed in micrograms per milliliter; the pH of the Tris buffer should be 8.0; and the concentration of deoxyferrous globin should be stated as 2.5 micromolar.

Two corrections have been made to: MATERIALS AND METHODS, Production and Purification of Recombinant Globins, paragraph 1, line 7 and line 17,

“…of LB medium with 100 μg ml−1 ampicillin or 100 μg ml−1 kanamycin,…”

“..20 mM Tris (pH 8.0) with 150 mM NaCl…”

One correction has been made to: MATERIALS AND METHODS, Nitrite Reductase Activity, paragraph 1, line 4,

“…were 2.5 μM and 0.05–1 mM, respectively.”

The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.