NDLI: A genetic linkage map of Spinacia oleracea and localization of a sex determination locus

Content Provider	Springer Nature Link
Author	Khattak, Jabar Z. K. Torp, Anna Maria Andersen, Sven B.
Copyright Year	2006
Abstract	A genetic map of Spinach (Spinacia oleracea) was constructed in a classical back cross population using 101 AFLP and 9 microsatellite markers. The map was divided into seven linkage groups with a total length of 585 cM and an average distance between the markers of 5.18 cM. The linkage map was constructed with LOD 3.5, but was quite stable with seven linkage groups remaining until LOD 7.0. Gender segregated 1 male to 1 female in the mapping population and was mapped to a small area of one linkage group with a distance of 1.9 cM to a microsatellite marker termed SO4. This small chromosomal region co-segregating with sex determination in the species is in contrast to previous reports on a heterologous XY chromosome system in spinach. Microsatellite markers used as anchors in the map construction were isolated from sequences of known nuclear encoded genes in spinach. This enabled simultaneous positioning on the map of these genes: Rubisco activase (Rca), Photosytem 1 subunit V (PsaG), Protein Kinase (Pk), Nitrate reductase (Nir), ferrodoxin:thioredoxin reductase (Ftr), Ribosomal protein L1 (Rps22), Choline monooxygenase (Cmo), Pseudogene for BZIP protein (Bzip), Glycerol-3-phosphate acyltransferase (Act1) and stromal ascorbate peroxidase, thylakoid-bound ascorbate peroxidase (Apx2). Spinach has a small genome, which makes it suitable for basic genomic studies and many physiologically important genes have been cloned from the species. The present map anchored with user friendly microsatellite markers will be useful for future studies of physiology and genetics of the species as well as studies of the nature of gender determination.
Starting Page	311
Ending Page	318
Page Count	8
File Format	PDF
ISSN	00142336
Journal	Euphytica
Volume Number	148
Issue Number	3
e-ISSN	15735060
Language	English
Publisher	Springer Netherlands
Publisher Date	2006-06-02
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	AFLP linkage map sex Spinacia oleracea SSR Biotechnology Plant Physiology Plant Pathology Plant Genetics & Genomics Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Horticulture Agronomy and Crop Science

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