Characterization of multiple SPS knockout mutants reveals redundant functions of the four Arabidopsis sucrose phosphate synthase isoforms in plant viability, and strongly indicates that enhanced respiration and accelerated starch turnover can alleviate the blockage of sucrose biosynthesis.

doi:10.1016/j.plantsci.2015.06.009

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Characterization of multiple SPS knockout mutants reveals redundant functions of the four Arabidopsis sucrose phosphate synthase isoforms in plant viability, and strongly indicates that enhanced respiration and accelerated starch turnover can alleviate the blockage of sucrose biosynthesis.

Plant science : an international journal of experimental plant biology - 1 Sept 2015

Bahaji Abdellatif, Baroja-Fernández Edurne, Ricarte-Bermejo Adriana, Sánchez-López Ángela María, Muñoz Francisco José, Romero Jose M, Ruiz María Teresa, Baslam Marouane, Almagro Goizeder, Sesma María Teresa, Pozueta-Romero Javier

Abstract excerpt

We characterized multiple knock-out mutants of the four Arabidopsis sucrose phosphate synthase (SPSA1, SPSA2, SPSB and SPSC) isoforms. Despite their reduced SPS activity, spsa1/spsa2, spsa1/spsb, spsa2/spsb, spsa2/spsc, spsb/spsc, spsa1/spsa2/spsb and spsa2/spsb/spsc mutants displayed wild type (WT) vegetative and reproductive morphology, and showed WT photosynthetic capacity and respiration. In contrast, growth...

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PMID: 26259182
DOI: 10.1016/j.plantsci.2015.06.009

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