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Metabolome Reprogramming During Fruit Ripening and Post-Harvest Storage in Ten Crop Species.

Michael Wittenberg1, Yanitsa Ilieva1, Tsanko Gechev1,2

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Summary

Fruit ripening involves complex, species-specific changes in metabolites, impacting nutritional value. This study compared metabolite dynamics across ten fruit species, revealing phylogenetic patterns and highlighting diverse nutritional profiles for consumers.

Keywords:
applebananablueberrykiwifruitmetabolomicspeachpearplumraspberrystrawberrytomato

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Area of Science:

  • Plant Science
  • Metabolomics
  • Nutritional Science

Background:

  • Fruit ripening involves significant metabolite alterations, affecting taste and nutrition.
  • Post-harvest changes in fruit composition are species-specific.
  • Understanding these dynamics is crucial for optimizing fruit quality and shelf-life.

Purpose of the Study:

  • To simultaneously contrast the ripening dynamics of ten diverse fruit species.
  • To identify common and species-specific metabolite changes during ripening and storage.
  • To compare nutritional properties and elemental compositions across different fruit types.

Main Methods:

  • Collected fruits from ten species (apple, banana, blueberry, etc.) at unripe, ripe, and overripe stages.
  • Performed comparative metabolome analysis using Gas Chromatography-Mass Spectrometry (GC-MS).
  • Examined metabolite dynamics during ripening and post-harvest storage, supplemented with literature data on elemental composition.

Main Results:

  • Fruit metabolite profiles and ripening dynamics showed significant clustering based on plant phylogeny.
  • Nutritional assessments revealed high value in bananas and significant antioxidant content in blueberries and peaches.
  • Common ripening patterns included organic acid to sugar conversion and cell wall modification, with notable species-specific variations (e.g., kiwi, Rosaceae berries) influencing shelf-life.

Conclusions:

  • Inter- and intra-specific variations in fruit metabolites and elements provide valuable reference data for producers and consumers.
  • Consuming a diverse range of fruits, including different cultivars, maximizes phytonutrient, sugar, amino acid, and antioxidant intake.
  • This research underscores the importance of fruit variety for optimal human nutrition.