Call for Papers: Molecular regulation of starch metabolism

During the last three decades the basic scheme of starch biosynthesis has been established. It is well known that after the synthesis of ADPglucose by ADPglucose pyrophosphorylase, amylopectin’s fine structure is formed by concerted actions of multiple isozymes from three classes of enzymes, starch synthase (SS), starch branching enzyme (BE), and starch debranching enzyme (DBE), and that amylose is synthesized by mainly granule-bound SS (GBSS). In spite of numerous past investigations, the regulation of the network of enzymatic reactions has not been fully understood. To resolve the complex mechanisms, we need to examine several topics such as redundancy and supplementary functions of multiple isozymes, enzyme-enzyme interaction(s), and regulatory factors controlling catalytic and specific activities of individual isozymes, temporal and spatial co-expression of multiple isozymes, post-translational modification of enzymatic capacities such as phosphorylation, glycosylation, and redox state. There are still lots of uncertainties in the understanding of the initiation of starch biosynthesis.

Accumulation of information on starch metabolism and materials such as mutants and transformed lines having novel starch phenotypes will provide us with great opportunities to use these starches for food and industrial applications. For this purpose, plant materials in which multiple starch biosynthetic enzymes are simultaneously modified can be of great use because they frequently exhibit a variety of more interesting starch phenotypes than expected from the sum of contributions of individual enzymes. To make these materials suitable for practical uses, the relationship between the structure and composition of starch molecules and the internal structure of starch granules must be clarified in more detail.
At present, plant species-specific events are still secrets. New approaches for comparative studies using a number of different plant species might give us invaluable and useful information for agriculture and future applications.
This special issue will deal with many topics described above and aims to open our eyes to the vivid field of starch metabolism research.

Manuscripts may be submitted no later than 31 July 2021 through the regular PMB submission site. Authors should select this special issue choice during the “Additional Information” step to direct the submission to the appropriate path. All manuscripts will be subject to standard peer review.

Guest Editors: Yasunori Nakamura, Martin Steup, Christophe Colleoni, Alberto A. Iglesias, Jinsong Bao, Naoko Fujita, Ian Tetlow