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Control of meristem determinacy by trehalose 6-phosphate phosphatases is uncoupled from enzymatic activity

Nature Plants, ISSN: 2055-0278, Vol: 5, Issue: 4, Page: 352-357
2019
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Crop yield in maize influenced by unexpected gene 'moonlighting'

Apr. 3, 2019 RA3 gene activity was detected and traced to presence in nucleus and cytoplasm of developing cell in maize ear. RA3 is in

Article Description

Meristem fate is regulated by trehalose 6-phosphate phosphatases (TPPs), but their mechanism of action remains mysterious. Loss of the maize TPPs RAMOSA3 and TPP4 leads to reduced meristem determinacy and more inflorescence branching. However, analysis of an allelic series revealed no correlation between enzymatic activity and branching, and a catalytically inactive version of RA3 complements the ra3 mutant. Together with their nuclear localization, these findings suggest a moonlighting function for TPPs.

Bibliographic Details

Claeys, Hannes; Vi, Son Lang; Xu, Xiaosa; Satoh-Nagasawa, Namiko; Eveland, Andrea L; Goldshmidt, Alexander; Feil, Regina; Beggs, Grace A; Sakai, Hajime; Brennan, Richard G; Lunn, John E; Jackson, David

Springer Science and Business Media LLC

Agricultural and Biological Sciences

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