RT Journal Article
T1 Characterization of two Peruvian maize landraces differing in boron toxicity tolerance
A1 Mamani-Huarcaya, Betty M
A1 González-Fontes, Agustín
A1 Navarro-Gochicoa, M. Teresa
A1 Camacho-Cristóbal, Juan José
A1 Ceacero, Carlos J.
A1 Herrera Rodríguez, María Begoña
A1 Fernández Cutire, Oscar
A1 Rexach, Jesús
K1 Aquaporins
K1 Boron toxicity
K1 Boron transporters
K1 Photosynthesis
K1 Zea mays
AB Boron (B) toxicity is a major agricultural problem that causes a considerable decrease in crop yield and quality. The soil in arid and semi-arid areas is often subjected to excessive B content. Southwestern Perú (department of Tacna) is characterized by high B levels in its agricultural land and irrigation water. This work analyzes the response of two local maize (Zea mays) landraces (Pachía and Sama) from Tacna to B toxicity. Both landraces were, therefore, grown in hydroponic media under control and B toxicity conditions, and after 10 days, seedlings were harvested and B content, B-transporter gene expressions, and several morphological and physiological parameters were determined. The leaf and root soluble B content was lower in Sama than in Pachía when both landraces were subjected to high B concentrations, which could be explained by its higher expression levels of B-efflux transporters. The capacity of Sama to maintain reduced levels of soluble B in its leaves and roots led to decreased leaf damage and higher photosynthetic and growth parameters under B toxicity conditions. These results support the proposal that Sama would perform better than Pachía under excessive B conditions, thus making it a more suitable landrace to be used in soils with toxic levels of B.
PB Elsevier
YR 2022
FD 2022-06-06
LK http://hdl.handle.net/10433/16734
UL http://hdl.handle.net/10433/16734
LA en
NO Plant Physiol Biochem. 185 (2022) 167–177
NO Agencia Andaluza de Cooperación Internacional para el Desarrollo (Consejería de Igualdad y Políticas Sociales) from Junta de Andalucía (2016SEC014), by the Consejería de Economía, Innovación, Ciencia y Empleo from Junta de Andalucía (BIO- 266) and by the Ministerio de Ciencia e Innovación (Grant PID2020- 118327GB-I00 funded by MCIN/AEI/10.13039/501100011033), Spain
NO Departamento de Fisiología, Anatomía y Biología Celular, Universidad Pablo de Olavide
DS RIO
RD May 22, 2026