Contrasting responses of cluster roots formation induced by phosphorus and nitrogen supply in Embothrium coccineum popul
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Contrasting responses of cluster roots formation induced by phosphorus and nitrogen supply in Embothrium coccineum populations from different geographical origin Ariana Bertin-Benavides & Luisa Bascuñán-Godoy & Carlos Henríquez-Castillo & Mabel Delgado & Carlos F. Burgos & Catalina Mardones & Andrea Ávila-Valdés & Francisco Valdebenito & Soraya Bravo & Rafael Rubilar & Rodrigo Hasbún & Alejandra Zúñiga-Feest
Received: 18 December 2019 / Accepted: 22 June 2020 # Springer Nature Switzerland AG 2020
Abstract Aims Embothrium coccineum is a pioneer tree that produces cluster roots (CR) induced by phosphorus (P) or nitrogen (N) deficiency, but the role which both N and P play in CR formation for different E. coccineum populations is still unknown. We hypothesized that in E. coccineum, N influences the CR formation response,
primarily induced by P limitation. However, this response depends on local adaptations to their specific conditions of geographic origin. Methods Seedlings from three contrasting edaphoclimatic conditions (Northern, Central and Southern populations) were grown in hydroponic culture under high and low N supply and at five different P
Responsible Editor: N. Jim Barrow. Electronic supplementary material The online version of this article (https://doi.org/10.1007/s11104-020-04622-0) contains supplementary material, which is available to authorized users. A. Bertin-Benavides : C. Mardones : R. Hasbún Laboratorio de Epigenética Vegetal, Departamento de Silvicultura, Facultad de Ciencias Forestales, Universidad de Concepción, Concepción, Chile A. Bertin-Benavides ONG Conciencia Sur, Concepción, Chile L. Bascuñán-Godoy Laboratorio de Fisiología Vegetal, Departamento de Botánica, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Concepción, Chile
M. Delgado Center of Plant, Soil Interaction and Natural Resources Biotechnology, Scientific and Technological Bio resource Nucleus (BIOREN), Universidad de La Frontera, Temuco, Chile M. Delgado Departamento de Ciencias Químicas y Recursos Naturales, Facultad de Ingeniería y Ciencias, Universidad de La Frontera, Temuco, Chile C. F. Burgos Departamento de Fisiología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
C. Henríquez-Castillo Laboratorio de Fisiología y Genética Marina (FIGEMA), Centro de Estudios Avanzados de Zonas Áridas (CEAZA), Coquimbo, Chile
A. Ávila-Valdés Escuela de Graduados, Facultad de Ciencias Agrarias, Universidad Austral de Chile, Valdivia, Chile
C. Henríquez-Castillo Facultad de Ciencias del Mar, Universidad Católica del Norte, Coquimbo, Chile
A. Ávila-Valdés : A. Zúñiga-Feest (*) Centro de Investigaciones en Suelos Volcánicos, CISVo, Universidad Austral de Chile, Valdivia, Chile
Plant Soil
supply. Morphophysiological responses, including CR number, growth, biomass, P and N plant concentration, were studied. Results Our results showed that at high N supply, CR formation was stimulated with increased P supply, but just until it reaches a maximum of 5 μM, above t
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