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Article

Ectopic maltase alleviates dwarf phenotype and improves plant frost tolerance of maltose transporter mutants.

Plant physiology - 27 May 2021

Cvetkovic Jelena, Haferkamp Ilka, Rode Regina, Keller Isabel, Pommerrenig Benjamin, Trentmann Oliver, Altensell Jacqueline, Fischer-Stettler Michaela, Eicke Simona, Zeeman Samuel C, Neuhaus H Ekkehard

Abstract excerpt

Maltose, the major product of starch breakdown in Arabidopsis (Arabidopsis thaliana) leaves, exits the chloroplast via the maltose exporter1 MEX1. Consequently, mex1 loss-of-function plants exhibit substantial maltose accumulation, a starch-excess phenotype and a specific chlorotic phenotype during leaf development. Here, we investigated whether the introduction of an alternative metabolic route could suppress...

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Identifiers

PMID: 33650638
DOI: 10.1093/plphys/kiab082
PMCID: PMC8154053

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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Ectopic maltase alleviates dwarf phenotype and improves plant frost tolerance of maltose transporter mutants.PMID 33650638Read ↗

Blocking the metabolism of starch breakdown products in Arabidopsis leaves triggers chloroplast degradation.Semantic proximity Read ↗

A previously unknown maltose transporter essential for starch degradation in leaves.Semantic proximity Read ↗

Chloroplast stress caused by maltose hyperaccumulation activates chlorophagy via the core autophagy machinery.Semantic proximity Read ↗

A maltose transporter from apple is expressed in source and sink tissues and complements the Arabidopsis maltose export-defective mutant.Semantic proximity Read ↗

Role of the plastidic glucose translocator in the export of starch degradation products from the chloroplasts in Arabidopsis thaliana.Semantic proximity Read ↗

Double knockout mutants of Arabidopsis grown under normal conditions reveal that the plastidial phosphorylase isozyme participates in transitory starch metabolism.Semantic proximity Read ↗

The Chlamydomonas mex1 mutant shows impaired starch mobilization without maltose accumulation.Semantic proximity Read ↗

A cytosolic glucosyltransferase is required for conversion of starch to sucrose in Arabidopsis leaves at night.Semantic proximity Read ↗

Defects in leaf carbohydrate metabolism compromise acclimation to high light and lead to a high chlorophyll fluorescence phenotype in Arabidopsis thaliana.Semantic proximity Read ↗

RNA interference of Arabidopsis beta-amylase8 prevents maltose accumulation upon cold shock and increases sensitivity of PSII photochemical efficiency to freezing stress.Semantic proximity Read ↗

Isolation and characterization of maltose non utilizing (mnu) mutants mapping outside the MAL1 locus in Saccharomyces cerevisiae.Semantic proximity Read ↗

Increased activity of the vacuolar monosaccharide transporter TMT1 alters cellular sugar partitioning, sugar signaling, and seed yield in Arabidopsis.Semantic proximity Read ↗

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