Interspecific hybridization in Allium crops: status and prospectus

Benke, Ashwini Prashant; Mahajan, Vijay; Manjunathagowda, Dalasanuru Chandregowda; Mokat, Digambar

doi:10.1007/s10722-021-01283-5

Cited by 13 publications

(15 citation statements)

References 60 publications

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“…Therefore, the estimated sequence of each chromosome of the bunching onion can be used as a template for onions with high commonality in the chromosome structure. Meanwhile, this genomic evidence well explains the weak reproductive isolation and ubiquitous existence of interspecific hybridization among Allium crops [14][15][16][17] , which provides valuable information for directing future genome-aided breeding of Allium crops. The Allium genus is characterized by unique flavors and medicinal properties owing to its specific cysteine-derived sulfur compounds [3][4][5] .…”

Section: Discussionmentioning

confidence: 77%

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Chromosome-level genome assembly of bunching onion illuminates genome evolution and flavor formation in Allium crops

Liao

Miao

et al. 2022

Nat Commun

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The Allium genus is cultivated globally as vegetables, condiments, or medicinal plants and is characterized by large genomes and strong pungency. However, the genome evolution and genomic basis underlying their unique flavor formation remain poorly understood. Herein, we report an 11.27-Gb chromosome-scale genome assembly for bunching onion (A. fistulosum). The uneven bursts of long-terminal repeats contribute to diversity in genome constituents, and dispersed duplication events largely account for gene expansion in Allium genomes. The extensive duplication and differentiation of alliinase and lachrymatory factor synthase manifest as important evolutionary events during flavor formation in Allium crops. Furthermore, differential selective preference for flavor-related genes likely lead to the variations in isoalliin content in bunching onions. Moreover, we reveal that China is the origin and domestication center for bunching onions. Our findings provide insights into Allium genome evolution, flavor formation and domestication history and enable future genome-assisted breeding of important traits in these crops.

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Section: Discussionmentioning

confidence: 77%

“…Natural or artificial interspecific hybridizations are ubiquitous among the Allium genus, which have been empirically and randomly utilized to introduce disease resistance and quality traits [14][15][16][17] . Genomeinformed interspecific hybridization could be an effective strategy to expand Allium genetic diversity for desirable agronomic traits.…”

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confidence: 99%

Chromosome-level genome assembly of bunching onion illuminates genome evolution and flavor formation in Allium crops

Liao

Miao

et al. 2022

Nat Commun

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“…The practice of onion cultivation and its subsequent worldwide spread isthought to have closely followed human migration patterns and trade routes [ 3 , 13 ]. Owing to their unique flavor, health-promoting properties, and culinary versatility, onions have become a staple in human diets and cultures over millennia, adding flavor and aroma to countless dishes [ 14 , 15 ]. Presently, onion cultivation is distributed over more than 140 countries.…”

Section: Introductionmentioning

confidence: 99%

Conservation and Global Distribution of Onion (Allium cepa L.) Germplasm for Agricultural Sustainability

Ochar,

Kim

2023

Plants

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Onion (Allium cepa L.) is recognized globally as a crucial vegetable crop, prized not only for its culinary applications but also for its numerous health-promoting properties. With climate change relentlessly exerting mounting challenges to agriculture, the preservation and deployment of onion germplasm has become critical to ensuring sustainable agriculture and safeguarding food security. Global onion germplasm collections function as repositories of genetic diversity, holding within them an extensive array of valuable traits or genes. These can be harnessed to develop varieties resilient to climate adversities. Therefore, detailed information concerning onion germplasm collections from various geographical regions can bolster their utility. Furthermore, an amplified understanding of the importance of fostering international and inter-institutional collaborations becomes essential. Sharing and making use of onion genetic resources can provide viable solutions to the looming agricultural challenges of the future. In this review, we have discussed the preservation and worldwide distribution of onion germplasm, along with its implications for agricultural sustainability. We have also underscored the importance of international and interinstitutional collaboration in onion germplasm collecting and conservation for agricultural sustainability.

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“…It includes economically important crops such as onion and garlic, which are regularly being in use as food, and were also being exploited for their medicinal and horticultural uses (Dutta and Bandyopadhyay 2014). The Allium genus is comprised of 750 species (Stearn 1992;Friesen et al 2006), and at up-to-date around 1000 species are enumerated (Benke et al 2021;Singh et al 2021). Alliums are found throughout the Northern Hemisphere's Temperate and Alpine zones, with diverse hotspots in Southwest or Central Asia, Eastern Asia, and North America (Nguyen et al 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Alliums are found throughout the Northern Hemisphere's Temperate and Alpine zones, with diverse hotspots in Southwest or Central Asia, Eastern Asia, and North America (Nguyen et al 2008). The Western Himalayas of Jammu, Kashmir, Uttaranchal and Himachal Pradesh, as well as the Eastern Himalayan region of Darjeeling hill tracts of West Bengal, Sikkim, and the North-Eastern provinces, are hotspots for Allium species in India (Dutta and Bandyopadhyay 2014;Benke et al 2021). A. tuberosum is native to the temperate region of Asia, it has been widely cultivated in temperate and tropical regions of Asia, Australia, Europe, and the Americas, and it has also become naturalized, it was mostly spread into other Asian countries by Chinese immigrants, especially to northern India (Hanelt et al 1992(Hanelt et al , 2001, extensively grown in China, Japan, Korea, Vietnam and Taiwan (Sharma and Gohil 2013a).…”

Section: Introductionmentioning

confidence: 99%

Characterization and relative mineral quantification of male gametophytes of garlic chives (Allium tuberosum Rottler ex Sprengel)

Manjunathagowda

Benke

Bhagat³

et al. 2021

Genet Resour Crop Evol

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Garlic chives (Allium tuberosum Rottler ex Sprengel) are an underutilized and neglected food crop of the Allium genus. For the future genetic development of alliums, phenotypic characterization and insights of breeding behaviour could be the aid to breed the new garlic chives varieties. Field Emission Scanning Electron Microscopy (FESEM) was used to reveal the morphological features of male gametophytes. The anther was reticulate, conspicuous, folded surface with scaly plates, and pollen was found to be sub-ovoid morphologies with long regulate and striated sexine. Spectra from FESEM-based Energy Dispersive X-ray Spectroscopy (EDS) revealed the elemental composition and distribution. The micrograph of an anther sample revealed the presence of O,

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Interspecific hybridization in Allium crops: status and prospectus

Cited by 13 publications

References 60 publications

Chromosome-level genome assembly of bunching onion illuminates genome evolution and flavor formation in Allium crops

Chromosome-level genome assembly of bunching onion illuminates genome evolution and flavor formation in Allium crops

Conservation and Global Distribution of Onion (Allium cepa L.) Germplasm for Agricultural Sustainability

Characterization and relative mineral quantification of male gametophytes of garlic chives (Allium tuberosum Rottler ex Sprengel)

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