Unknown

Dataset Information

0

Population structure, genetic diversity and downy mildew resistance among Ocimum species germplasm.


ABSTRACT: BACKGROUND:The basil (Ocimum spp.) genus maintains a rich diversity of phenotypes and aromatic volatiles through natural and artificial outcrossing. Characterization of population structure and genetic diversity among a representative sample of this genus is severely lacking. Absence of such information has slowed breeding efforts and the development of sweet basil (Ocimum basilicum L.) with resistance to the worldwide downy mildew epidemic, caused by the obligate oomycete Peronospora belbahrii. In an effort to improve classification of relationships 20 EST-SSR markers with species-level transferability were developed and used to resolve relationships among a diverse panel of 180 Ocimum spp. accessions with varying response to downy mildew. RESULTS:Results obtained from nested Bayesian model-based clustering, analysis of molecular variance and unweighted pair group method using arithmetic average (UPGMA) analyses were synergized to provide an updated phylogeny of the Ocimum genus. Three (major) and seven (sub) population (cluster) models were identified and well-supported (P?

SUBMITTER: Pyne RM 

PROVIDER: S-EPMC5914031 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature

altmetric image

Publications

Population structure, genetic diversity and downy mildew resistance among Ocimum species germplasm.

Pyne Robert M RM   Honig Josh A JA   Vaiciunas Jennifer J   Wyenandt Christian A CA   Simon James E JE  

BMC plant biology 20180423 1


<h4>Background</h4>The basil (Ocimum spp.) genus maintains a rich diversity of phenotypes and aromatic volatiles through natural and artificial outcrossing. Characterization of population structure and genetic diversity among a representative sample of this genus is severely lacking. Absence of such information has slowed breeding efforts and the development of sweet basil (Ocimum basilicum L.) with resistance to the worldwide downy mildew epidemic, caused by the obligate oomycete Peronospora be  ...[more]

Similar Datasets

| S-EPMC4299303 | biostudies-other
2016-04-30 | GSE79807 | GEO
| S-EPMC8525366 | biostudies-literature
| S-EPMC4018448 | biostudies-literature
| S-EPMC5688169 | biostudies-literature
| S-EPMC3792140 | biostudies-literature
| S-EPMC7397172 | biostudies-literature
| S-EPMC6744718 | biostudies-literature
| S-EPMC7239897 | biostudies-literature
| S-EPMC9715576 | biostudies-literature