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Bhowmick BK, Sarkar S, Roychowdhury D, Patil SD, Lekhak MM, Ohri D, Rama Rao S, Yadav SR, Verma RC, Dhar MK, Raina SN, Jha S. Allium cytogenetics: a critical review on the Indian taxa. COMPARATIVE CYTOGENETICS 2023; 17:129-156. [PMID: 37304149 PMCID: PMC10252142 DOI: 10.3897/compcytogen.17.98903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 02/28/2023] [Indexed: 06/13/2023]
Abstract
The genus Allium Linnaeus, 1753 (tribe Allieae) contains about 800 species worldwide of which almost 38 species are reported in India, including the globally important crops (onion, garlic, leek, shallot) and many wild species. A satisfactory chromosomal catalogue of Allium species is missing which has been considered in the review for the species occurring in India. The most prominent base number is x=8, with few records of x=7, 10, 11. The genome size has sufficient clues for divergence, ranging from 7.8 pg/1C to 30.0 pg/1C in diploid and 15.16 pg/1C to 41.78 pg/1C in polyploid species. Although the karyotypes are seemingly dominated by metacentrics, substantial variation in nucleolus organizing regions (NORs) is noteworthy. The chromosomal rearrangement between A.cepa Linnaeus, 1753 and its allied species has paved way to appreciate genomic evolution within Allium. The presence of a unique telomere sequence and its conservation in Allium sets this genus apart from all other Amaryllids and supports monophyletic origin. Any cytogenetic investigation regarding NOR variability, telomere sequence and genome size in the Indian species becomes the most promising field to decipher chromosome evolution against the background of species diversity and evolution, especially in the Indian subcontinent.
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Affiliation(s)
- Biplab Kumar Bhowmick
- Department of Botany, Scottish Church College, 1&3, Urquhart Square, Kolkata- 700006, West Bengal, IndiaDepartment of Botany, Scottish Church CollegeKolkataIndia
| | - Sayantika Sarkar
- Department of Botany, University of Calcutta, 35 Ballygunge Circular Road, Kolkata- 700019, West Bengal, IndiaUniversity of CalcuttaKolkataIndia
| | - Dipasree Roychowdhury
- Department of Botany, University of Calcutta, 35 Ballygunge Circular Road, Kolkata- 700019, West Bengal, IndiaUniversity of CalcuttaKolkataIndia
| | - Sayali D. Patil
- Angiosperm Taxonomy Laboratory, Department of Botany, Shivaji University, Kolhapur, Maharashtra- 416004, IndiaShivaji UniversityKolhapurIndia
| | - Manoj M. Lekhak
- Angiosperm Taxonomy Laboratory, Department of Botany, Shivaji University, Kolhapur, Maharashtra- 416004, IndiaShivaji UniversityKolhapurIndia
| | - Deepak Ohri
- Amity Institute of Biotechnology, Research Cell, Amity University Uttar Pradesh, Lucknow Campus, Lucknow- 226028, Uttar Pradesh, IndiaAmity University Uttar PradeshLucknowIndia
| | - Satyawada Rama Rao
- Department of Biotechnology and Bioinformatics, North-Eastern Hill University, Shillong, Meghalaya- 793022, IndiaNorth-Eastern Hill UniversityShillongIndia
| | - S. R. Yadav
- Angiosperm Taxonomy Laboratory, Department of Botany, Shivaji University, Kolhapur, Maharashtra- 416004, IndiaShivaji UniversityKolhapurIndia
| | - R. C. Verma
- School of Studies in Botany, Vikram University, Ujjain, Madhya Pradesh 456010, IndiaVikram UniversityUjjainIndia
| | - Manoj K. Dhar
- Genome Research Laboratory, School of Biotechnology, University of Jammu, Jammu, Jammu and Kashmir- 180006, IndiaUniversity of JammuJammuIndia
| | - S. N. Raina
- Amity Institute of Biotechnology, Amity University, Sector 125, Noida, Uttar Pradesh- 201313, IndiaAmity UniversityNoidaIndia
| | - Sumita Jha
- Department of Botany, University of Calcutta, 35 Ballygunge Circular Road, Kolkata- 700019, West Bengal, IndiaUniversity of CalcuttaKolkataIndia
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