About the Authors

Juan Herrero

jhi@eead.csic.es

Affiliation Estación Experimental de Aula Dei, CSIC, Ave. Montañana 1005, 50059 Zaragoza, Spain

David C. Weindorf

Affiliation Department of Plant and Soil Science, Texas Tech University, Lubbock, Texas 79409, United States of America

Carmen Castañeda

Affiliation Estación Experimental de Aula Dei, CSIC, Ave. Montañana 1005, 50059 Zaragoza, Spain

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JH. Performed the experiments: CC. Analyzed the data: JH CC DCW. Contributed reagents/materials/analysis tools: JH CC. Wrote the paper: JH DCW CC.