High throughput screening of starch structures using carbohydrate microarrays.

Abstract

In this study we introduce the starch-recognising carbohydrate binding module family 20 (CBM20) from Aspergillus niger for screening biological variations in starch molecular structure using high throughput carbohydrate microarray technology. Defined linear, branched and phosphorylated maltooligosaccharides, pure starch samples including a variety of different structures with variations in the amylopectin branching pattern, amylose content and phosphate content, enzymatically modified starches and glycogen were included. Using this technique, different important structures, including amylose content and branching degrees could be differentiated in a high throughput fashion. The screening method was validated using transgenic barley grain analysed during development and subjected to germination. Typically, extreme branching or linearity were detected less than normal starch structures. The method offers the potential for rapidly analysing resistant and slowly digested dietary starches.

Plant phenotyping relevance

植物種子（トランスジェニック・オオムギ穀粒）のデンプン構造を高スループットに抽出・識別するマイクロアレイ法が研究の中心であり、検証も実施しているため。

Code and data availability

The article describes carbohydrate microarray screening of starch structures, but contains no public phenotype dataset, image/sensor data, analysis code, trained model, or supplement deposit. All data are presented only as figures; methods reference commercial tools and cited prior work without any availability or URL.

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