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What Worth the Garlic Peel.

Jeevan R Singiri¹, Bupur Swetha¹, Arava Ben-Natan¹

¹French Associates Institute for Agriculture and Biotechnology of Drylands, Jacob Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben-Gurion 84990, Israel.

International Journal of Molecular Sciences

|February 26, 2022

Summary

Garlic peels, dead organs enclosing asexual reproductive bodies, contain proteins and metabolites that protect the bulb, influence plant growth, and combat pathogens. These peels offer physical protection and possess biochemical properties for survival.

Keywords:

Allium sativum (garlic)Asexual reproduction allelochemicals bulb chitinases dead organs enclosing reproductive body garlic peels microbial growth nucleases primary metabolites proteases proteome

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Area of Science:

Plant Biology
Biochemistry
Agricultural Science

Background:

Plants reproduce sexually (embryos) or asexually (vegetative bodies like bulbs).
Dead organs enclosing embryos (DOEEs) protect and nurture reproductive units.
Garlic (Allium sativum) bulb peels, dead organs enclosing asexual propagules, were investigated.

Purpose of the Study:

To investigate the biochemical and biological properties of garlic bulb's outer and inner peels.
To understand the role of these dead organs in plant reproduction and survival.

Main Methods:

Bioassays
Proteomics
Metabolomics

Main Results:

Garlic peels differentially affected germination and growth of other plant species.
Proteomic analysis revealed 67 active proteins, including chitinases and proteases.
Outer peels accumulated sugars (rhamnose, mannitol, sorbitol, trehalose) and 5-hydroxylysine.
Peel extracts promoted bacterial growth but inhibited fungal spore germination.

Conclusions:

Garlic peels provide physical protection and possess bioactive compounds.
These compounds enhance growth, combat pathogens, and confer stress tolerance.
Dead organs enclosing asexual propagules have complex protective and developmental roles.