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Literature summary for 3.2.1.26 extracted from

  • Barratt, D.H.; Derbyshire, P.; Findlay, K.; Pike, M.; Wellner, N.; Lunn, J.; Feil, R.; Simpson, C.; Maule, A.J.; Smith, A.M.
    Normal growth of Arabidopsis requires cytosolic invertase but not sucrose synthase (2009), Proc. Natl. Acad. Sci. USA, 106, 13124-13129.
    View publication on PubMedView publication on EuropePMC
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Localization

Localization Comment Organism GeneOntology No. Textmining

Organism

Organism UniProt Comment Textmining
Arabidopsis thaliana
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General Information

General Information Comment Organism
physiological function single T-DNA insertion mutants of cytosolic isoforms cinv1 and cinv2 appear identical to wild-type plants on soil under our growth conditions. The cinv1/cinv2 double mutant plants flower and set seed when grown on soil, but are much smaller in all respects than wild-type plants at maturity. Seedlings of cinv1/cinv2 double mutant have relatively normal shoot growth, but drastically reduced root growth on solid medium without sugar. Whereas primary root extension over 7 days of growth is 60% of the wild-type value in cinv1 mutant, and 120% of the wild-type value in cinv2, it is only 17% of the wild-type value in cinv1/cinv2 double mutants. Cells in the root expansion zone of cinv1/cinv2 mutants are enlarged and have a greater tendency to collapse during manipulation than those of wild-type and single-mutant plants. Abnormal cell divisions occur in the stele, endodermis, and cortex. Growth on glucose restores root extension in double mutants to approximately half of wild-type. Neutral invertase activity in roots is 40% lower in double mutant than in wild-type seedlings Arabidopsis thaliana