1. Interaction between ABA and cytokinins in salinized tomato plants
- Author
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Martínez Pérez, A., Bahar Oztekin, G., Albacete Moreno, Alfonso, Thompson, A.J., Sánchez Iglesias, María del Puerto, Pérez Alfocea, Francisco, Martínez Andújar, Cristina, and Universidad Politécnica de Cartagena
- Subjects
Phytohormones ,Hydroponic ,Grafting ,fungi ,food and beverages ,Tecnología de los Alimentos ,Transgenics - Abstract
Abscisic acid (ABA) and cytokinins (CKs) are phytohormones that mediate plant responses to abiotic stress and are mainly considered to be produced in roots. These two plant hormones have long been considered antagonists, but the role of this antagonism in mediating abiotic stress resistance remains unknown. In this study we have used reciprocal grafting of transgenic lines with altered hormone synthesis (ABA or CK synthesis) with the aim of assessing the importance of ABA and CK interaction in mediating plant salinity responses in tomato. Preliminary results have shown a negative effect in ABA and CK on tomato plant biomass under salinity. Results have also indicated that jasmonic acid (JA) might be involved in the negative impact on tomato growth caused by ABA and CK interaction under salt conditions. The authors thank Andrew J. Thompson, from Cranfield Univertity (UK), and Ann C. Smigocki from Molecular Plant Pathology Laboratory (EEUU) the NCED and IPT seeds sets respectively. This work was supported by CICYT AGL2011‐27996 and ROOTOPOWER (REF: 289365. FP7‐KBBE‐2011‐5 European Union).
- Published
- 2016