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Article

Exocyst mutants suppress pollen tube growth and cell wall structural defects of hydroxyproline O-arabinosyltransferase mutants.

The Plant journal : for cell and molecular biology - 1 Aug 2020

Beuder Steven, Dorchak Alexandria, Bhide Ashwini, Moeller Svenning Rune, Petersen Bent L, MacAlister Cora A

Abstract excerpt

HYDROXYPROLINE O-ARABINOSYLTRANSFERASEs (HPATs) initiate a post-translational protein modification (Hyp-Ara) found abundantly on cell wall structural proteins. In Arabidopsis thaliana, HPAT1 and HPAT3 are redundantly required for full pollen fertility. In addition to the lack of Hyp-Ara in hpat1/3 pollen tubes (PTs), we also found broadly disrupted cell wall polymer distributions, particularly the conversion of...

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PMID: 32391581
DOI: 10.1111/tpj.14808
PMCID: PMC7496944

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