Figure 1.
Phenotypic and molecular characterization of cassava srd mutant. (A) Normal foliage development of wild type (WT) and srd mutants and delay of storage root formation in srd mutants after three months of growth in the greenhouse using shoot culture; no obvious change in mature leaves at the end of the dark period after iodine staining were noted; by contrast, the young stem of the srd mutant showed markedly decreased starch accumulation in cortical parenchyma cells than in the WT. (B) Reduced growth of storage roots in the srd mutant in the greenhouse (left and upper-right panels) and field-grown (bottom right panel) plants using stem cuttings. (C) Verification of the T-DNA insert by PCR using the primer pair FP1/RP1 and FP1/RP2, and qRT-PCR using the primer pair G1qrt5’F/G1qrt5′R and following Western blot using a specific antibody directed against MeGWD1, where it was found that the T-DNA insert in the eighth exon of MeGWD1 led to reduced protein expression.
