Lactuca dregeana DC. (Asteraceae: Chicorieae) – A South African crop relative under threat from hybridization and climate change

  title={Lactuca dregeana DC. (Asteraceae: Chicorieae) – A South African crop relative under threat from hybridization and climate change},
  author={Michal Sochor and John C. Manning and Petra {\vS}arhanov{\'a} and Zeger O van Herwijnen and Ale{\vs} Lebeda and Ivana Dole{\vz}alov{\'a}},
  journal={South African Journal of Botany},
1 Citations
Whole-genome resequencing of 445 Lactuca accessions reveals the domestication history of cultivated lettuce.
This study sequenced a total of 445 Lactuca accessions, including major lettuce crop types and wild relative species, and generated a comprehensive map of lettuce genome variations, which revealed that lettuce was first domesticated near the Caucasus, which was marked by loss of seed shattering.


Representation of wild Lactuca spp. (Asteraceae, Lactuceae) in world genebank collections
The spread of the genus Lactuca worldwide includes 16 species in Europe, 51 in Asia, 43 in Africa and 12 in America (mostly North American subcontinent). Natural distributions of Lactuca spp. are
Karyological and Phylogenetic Studies in the Genus Lactuca L. (Asteraceae)
Karyotypes of 40 accessions representing 10 different Lactuca species were studied in detail and cluster analysis of the collected karyological data indicated significant inter- and intra-speciflc differences for all variables measured.
Hybridization rates between lettuce (Lactuca sativa) and its wild relative (L. serriola) under field conditions.
In sympatric crop-wild populations, cross-pollination between cultivated lettuce and its wild relative has to be seen as the rule rather than the exception for short distances, and hybridization between L. sativa and L. serriola is investigated.
The wild genetic resources of cultivated lettuce (Lactuca sativa L.)
The combined taxonomic and genetic evidence indicates that all these 7 wild lettuces are very likelyertile (or largely cross-fertile) with the crop, and constitute its primary wild gene pool.
Phylogenetic relationships among Lactuca (Asteraceae) species and related genera based on ITS-1 DNA sequences.
The ITS-1 phylogenies, calculated using PAUP and PHYLIP, correspond better to the classification of Feráková than to other classifications evaluated, although the inclusion of sect.
Processes Driving the Adaptive Radiation of a Tropical Tree ( Diospyros , Ebenaceae) in New Caledonia, a Biodiversity Hotspot
The results suggest that both allopatric diversification and (parapatric) ecological divergence shaped successive rounds of speciation in the Diospyros radiation on New Caledonia.
Species relationships in Lactuca s.l. (Lactuceae, Asteraceae) inferred from AFLP fingerprints.
An AFLP data set comprising 95 accessions from 20 species of Lactuca s.l. (sensu lato) and related genera was generated using the primer combinations E35/M48 and E 35/M49, and it is postulated that these species are conspecific.
Characterization of Lactuca spp. germplasm by protein and molecular markers - a review
The development of molecular genetic methods and their application has contributed to the elucidation of various aspects related to the taxonomy, variability, biodiversity, genetics and breeding within the genus Lactuca.
Geographical distribution of genetic diversity in Secale landrace and wild accessions
Levels of ascertainment bias, STRUCTURE and principal component analyses all supported the proposed classification of S. africanum and S. strictum as a separate species from S. cereale, while S. vavilovii was found to be the most likely wild ancestor of cultivated rye.