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Article

OsVPS34-generated PI3P recruits GPA5/Rab5a to regulate post-Golgi glutelin trafficking in rice endosperm.

Plant physiology - 2 Jul 2026

Xu Shanbin, Ma Mingqing, Zhao Huanhuan, Zhou Aoni, Li Zi, Li Bo, He Yuzhe, Zhang Guiping, Cai Hongping, Gu Chuanwei, Yu Ting, Yang Xue, Zhou Lei, Zhang Yu, Duan Erchao, Teng Xuan, Liu Xi, Liu Shijia, Tian Yunlu, Jiang Ling, Ren Yulong, Wang Yihua, Dong Hui, Wan Jianmin

Abstract excerpt

Seed storage proteins (SSPs) are stored in protein storage vacuoles (PSVs) within plant endosperm cells. In rice, glutelins undergo post-Golgi trafficking via dense vesicles (DVs) to protein body II (PBII). Phosphatidylinositol 3-phosphate (PI3P) regulates endosomal, autophagic, and vacuolar trafficking, yet its role in glutelin transport remains unclear. Here, we characterized the glutelin precursor...

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Methodology Data sources Editorial policy Privacy About Contact Helena Bioinformatics

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Identifiers

PMID: 41851989
DOI: 10.1093/plphys/kiag154
PMCID: PMC13360276

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OsVPS34-generated PI3P recruits GPA5/Rab5a to regulate post-Golgi glutelin trafficking in rice endosperm.PMID 41851989Read ↗

GLUTELIN PRECURSOR ACCUMULATION3 encodes a regulator of post-Golgi vesicular traffic essential for vacuolar protein sorting in rice endosperm.Semantic proximity Read ↗

OsOSCA2.4 regulates post-Golgi trafficking of storage proteins by modulating Ca2+ homeostasis in rice endosperm.Semantic proximity Read ↗

OsRab5a regulates endomembrane organization and storage protein trafficking in rice endosperm cells.Semantic proximity Read ↗

Subunit E isoform 1 of vacuolar H+-ATPase OsVHA enables post-Golgi trafficking of rice seed storage proteins.Semantic proximity Read ↗

GPA5 Encodes a Rab5a Effector Required for Post-Golgi Trafficking of Rice Storage Proteins.Semantic proximity Read ↗

The small GTPase Rab5a is essential for intracellular transport of proglutelin from the Golgi apparatus to the protein storage vacuole and endosomal membrane organization in developing rice endosperm.Semantic proximity Read ↗

Functional diversification of Sec13 isoforms for storage protein trafficking in rice endosperm cells.Semantic proximity Read ↗

Preserving the functional integrity of BiP1 is essential for rice storage protein export from the endoplasmic reticulum.Semantic proximity Read ↗

Involvement of a rice mutation in storage protein biogenesis in endosperm and its genomic location.Semantic proximity Read ↗

A guanine nucleotide exchange factor for Rab5 proteins is essential for intracellular transport of the proglutelin from the Golgi apparatus to the protein storage vacuole in rice endosperm.Semantic proximity Read ↗

iTRAQ-based quantitative glutelin proteomic analysis reveals differentially expressed proteins in the physiological metabolism process during endosperm development and their impacts on yield and quality in autotetraploid rice.Semantic proximity Read ↗

PROTEIN PHOSPHATASE95 Regulates Phosphate Homeostasis by Affecting Phosphate Transporter Trafficking in Rice.Semantic proximity Read ↗

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