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Open AccessArticle

Comprehensive Metabolite Profiling in Genetic Resources of Garlic (Allium sativum L.) Collected from Different Geographical Regions

Botany Department, Faculty of Science, Aswan University, Aswan 81528, Egypt
Laboratory of Agroecology, Faculty of Agriculture, Kyushu University, Kasuya, Fukuoka 811-2307, Japan
Laboratory of Vegetable Crop Science, Graduate School of Sciences and Technology for Innovation, College of Agriculture, Yamaguchi University Yamaguchi City, Yamaguchi 753-8515, Japan
Allium Unit, Division of Vegetable Breeding, Institute of Vegetable and Floriculture Science, National Agriculture and Food Research Organization (NARO), 360 Kusawa, Ano, Tsu, Mie 514-2392, Japan
RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa 230-0045, Japan
Molecular Biotechnology Program, Field of Advanced Basic Sciences, Galala University, New Galala City 43511, Egypt
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editors: Ifedayo Victor Ogungbe, Masayoshi Shigyo and Mostafa Abdelrahman
Molecules 2021, 26(5), 1415;
Received: 2 January 2021 / Revised: 18 February 2021 / Accepted: 25 February 2021 / Published: 5 March 2021
(This article belongs to the Special Issue Alliums: Traditional Uses, Phytochemistry and Biological Activities)
Garlic (Allium sativum) is the second most important Allium crop that has been used as a vegetable and condiment from ancient times due to its characteristic flavor and taste. Although garlic is a sterile plant that reproduces vegetatively through cloves, garlic shows high biodiversity, as well as phenotypic plasticity and environmental adaptation capacity. To determine the possible mechanism underlying this phenomenon and to provide new genetic materials for the development of a novel garlic cultivar with useful agronomic traits, the metabolic profiles in the leaf tissue of 30 garlic accessions collected from different geographical regions, with a special focus on the Asian region, were investigated using LC/MS. In addition, the total saponin and fructan contents in the roots and cloves of the investigated garlic accessions were also evaluated. Total saponin and fructan contents did not separate the garlic accessions based on their geographical origin, implying that saponin and fructan contents were clone-specific and agroclimatic changes have affected the quantitative and qualitative levels of saponins in garlic over a long history of cultivation. Principal component analysis (PCA) and dendrogram clustering of the LC/MS-based metabolite profiling showed two major clusters. Specifically, many Japanese and Central Asia accessions were grouped in cluster I and showed high accumulations of flavonol glucosides, alliin, and methiin. On the other hand, garlic accessions grouped in cluster II exhibited a high accumulation of anthocyanin glucosides and amino acids. Although most of the accessions were not separated based on country of origin, the Central Asia accessions were clustered in one group, implying that these accessions exhibited distinct metabolic profiles. The present study provides useful information that can be used for germplasm selection and the development of new garlic varieties with beneficial biotic and abiotic stress-adaptive traits. View Full-Text
Keywords: garlic; saponins; fructan; metabolome profiles garlic; saponins; fructan; metabolome profiles
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MDPI and ACS Style

Abdelrahman, M.; Hirata, S.; Mukae, T.; Yamada, T.; Sawada, Y.; El-Syaed, M.; Yamada, Y.; Sato, M.; Hirai, M.Y.; Shigyo, M. Comprehensive Metabolite Profiling in Genetic Resources of Garlic (Allium sativum L.) Collected from Different Geographical Regions. Molecules 2021, 26, 1415.

AMA Style

Abdelrahman M, Hirata S, Mukae T, Yamada T, Sawada Y, El-Syaed M, Yamada Y, Sato M, Hirai MY, Shigyo M. Comprehensive Metabolite Profiling in Genetic Resources of Garlic (Allium sativum L.) Collected from Different Geographical Regions. Molecules. 2021; 26(5):1415.

Chicago/Turabian Style

Abdelrahman, Mostafa; Hirata, Sho; Mukae, Takuya; Yamada, Tomohiro; Sawada, Yuji; El-Syaed, Magdi; Yamada, Yutaka; Sato, Muneo; Hirai, Masami Y.; Shigyo, Masayoshi. 2021. "Comprehensive Metabolite Profiling in Genetic Resources of Garlic (Allium sativum L.) Collected from Different Geographical Regions" Molecules 26, no. 5: 1415.

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