Article
Impaired phloem loading in zmsweet13a,b,c sucrose transporter triple knock-out mutants in Zea mays.
The New phytologist - 1 Apr 2018
Bezrutczyk Margaret, Hartwig Thomas, Horschman Marc, Char Si Nian, Yang Jinliang, Yang Bing, Frommer Wolf B, Sosso Davide
Abstract excerpt
Crop yield depends on efficient allocation of sucrose from leaves to seeds. In Arabidopsis, phloem loading is mediated by a combination of SWEET sucrose effluxers and subsequent uptake by SUT1/SUC2 sucrose/H+ symporters. ZmSUT1 is essential for carbon allocation in maize, but the relative contribution to apoplasmic phloem loading and retrieval of sucrose leaking from the translocation path is not known. Here we...
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