Michaela Stettler

TL;DR: Data suggest that BAM4 facilitates or regulates starch breakdown and operates independently of BAM1 and BAM3, consistent with the proposal that β-amylase is a major enzyme of starch breakdown in leaves, but they reveal unexpected complexity in terms of the specialization of protein function.

TL;DR: It is proposed that the accumulation of maltose and malto-oligosaccharides causes chloroplast dysfunction, which may by signaled via a form of retrograde signaling and trigger chloropleft degradation.

TL;DR: It is shown that LSF1 is also required for starch degradation: lsf1 mutants, like sex4 mutants, have substantially more starch in their leaves than wild-type plants throughout the diurnal cycle.

TL;DR: An overview of current models of starch breakdown in leaves is provided and it is now apparent that glucan phosphorylation is required for normal rates of starch mobilisation to occur, although a detailed understanding of this step is still lacking.

TL;DR: The results indicate that the ABC1K1 kinase constitutes a new type of regulatory link between photosynthetic activity and chloroplast metabolism.