Construction of a garlic BAC library and chromosomal assignment of BAC clones using the FISH technique.

Abstract:

:For molecular and cytogenetic studies, two partial bacterial artificial chromosome (BAC) libraries of the garlic cultivar Allium sativum L. 'Danyang' were constructed using high molecular weight (HMW) garlic DNA, the pBAC1-SACB1 vector, and the pIndigoBAC536 vector. The average insert size of the BAC library was about 90 kb. The sequence compositions of the BAC clones were characterized by Southern hybridization with garlic genomic DNA and a repetitive sequence clone of garlic. Two BAC clones with weak signals (thus implying mostly unique sequences), GBC2-5e and GBC2-4d, were selected for FISH analysis. FISH analysis localized the GBC2-5e (approximately 100 kb) BAC clone on the long arm of garlic chromosome 7. The other BAC clone, GBC2-4d (approximately 110 kb), gave rise to discrete FISH signals on a mid-size early metaphase chromosome. The FISH screening with BAC clones proved to be a useful resource for molecular cytogenetic studies of garlic, and will be useful for further mapping and sequencing studies of important genes of this plant.

journal_name

Genome

journal_title

Genome

authors

Lee HR,Eom EM,Lim YP,Bang JW,Lee DH

doi

10.1139/g03-012

subject

Has Abstract

pub_date

2003-06-01 00:00:00

pages

514-20

issue

3

eissn

0831-2796

issn

1480-3321

pii

g03-012

journal_volume

46

pub_type

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