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Fruit Development, Structure, and Function

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Related Experiment Video

Updated: Jan 11, 2026

Combining Histochemical Staining and Image Analysis to Quantify Starch in the Ovary Primordia of Sweet Cherry during Winter Dormancy

Combining Histochemical Staining and Image Analysis to Quantify Starch in the Ovary Primordia of Sweet Cherry during Winter Dormancy

Published on: March 20, 2019

Malate accumulation and transcriptome patterns during fruit development in sweet Cherry (Prunus avium L.).

Congli Liu^1,2, Lei Chen³, Xiliang Qi¹

¹National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, 450009, China.

BMC Plant Biology

|November 12, 2025

Summary

Sweet cherry acidity is key to flavor. Researchers identified genes regulating malate accumulation, providing insights for breeding better fruit quality.

Keywords:

Fruit acidity Malate metabolism Sweet cherry Transcriptome sequencing

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Area of Science:

Plant Science
Fruit Biology
Molecular Genetics

Background:

Fruit acidity is crucial for organoleptic quality in fleshy fruits.
Malate is a key organic acid influencing sweet cherry flavor and palatability.
Molecular mechanisms of malate accumulation in sweet cherries are not well understood.

Purpose of the Study:

To establish a phenotyping framework for sweet cherry acidity classification.
To identify genes and regulatory networks controlling malate accumulation in sweet cherries.
To provide a foundation for precision breeding of sweet cherry fruit quality.

Main Methods:

Quantitative profiling of titratable acidity (TA) in 97 sweet cherry cultivars.
Temporal metabolomic and transcriptomic analyses of high-acid and low-acid fruits.
Identification of differentially expressed genes and candidate transcription factors.

Main Results:

A phenotyping framework for acidity classification was established.
Malate was identified as the dominant organic acid with a biphasic accumulation pattern.
Six structural genes (PavPEPC3, PavMDH1, PavME1, PavPHA5, PavALMT1, PavALMT6) and two transcription factors (PavWRKY33, PavbHLH149) correlated with malate content and TA variation.

Conclusions:

A comprehensive framework for sweet cherry acidity classification was developed.
The core genetic regulatory network for malate accumulation was elucidated.
Mechanistic insights support precision breeding for optimized fruit acidity and quality.