Record Details

Draft genome sequence of Solanum aethiopicum provides insights into disease resistance, drought tolerance, and the evolution of the genome

OAR@ICRISAT

View Archive Info
 
 
Field Value
 
Relation http://oar.icrisat.org/11406/
https://doi.org/10.1093/gigascience/giz115
doi:10.1093/gigascience/giz115
 
Title Draft genome sequence of Solanum aethiopicum provides insights into disease resistance, drought tolerance, and the evolution of the genome
 
Creator Song, B
Song, Y
Fu, Y
Kizito, E B
Kamenya, S N
Kabod, P N
Liu, H
Muthemba, S
Kariba, R
Njuguna, J
Maina, S
Stomeo, F
Djikeng, A
Hendre, P S
Chen, X
Chen, W
Li, X
Sun, W
Wang, W
Cheng, S
Muchugi, A
Jamnadass, R
Shapiro, H Y
Van Deynze, A
Yang, H
Wang, J
Xu, X
Odeny, D A
Liu, X
 
Subject Biotic Stress
Drought Tolerance
Vegetable and Field crops
Genetics and Genomics
 
Description The African eggplant (Solanum aethiopicum) is a nutritious traditional vegetable used in many African countries,
including Uganda and Nigeria. It is thought to have been domesticated in Africa from its wild relative, Solanum anguivi. S.aethiopicum has been routinely used as a source of disease resistance genes for several Solanaceae crops, including Solanum
melongena. A lack of genomic resources has meant that breeding of S. aethiopicum has lagged behind other vegetable crops.
Results: We assembled a 1.02-Gb draft genome of S. aethiopicum, which contained predominantly repetitive sequences
(78.9%). We annotated 37,681 gene models, including 34,906 protein-coding genes. Expansion of disease resistance genes
was observed via 2 rounds of amplification of long terminal repeat retrotransposons, which may have occurred ∼1.25 and
3.5 million years ago, respectively. By resequencing 65 S. aethiopicum and S. anguivi genotypes, 18,614,838 single-nucleotide
polymorphisms were identified, of which 34,171 were located within disease resistance genes. Analysis of domestication
and demographic history revealed active selection for genes involved in drought tolerance in both “Gilo” and “Shum”
groups. A pan-genome of S. aethiopicum was assembled, containing 51,351 protein-coding genes; 7,069 of these genes were
missing from the reference genome. Conclusions: The genome sequence of S. aethiopicum enhances our understanding of
its biotic and abiotic resistance. The single-nucleotide polymorphisms identified are immediately available for use by
breeders. The information provided here will accelerate selection and breeding of the African eggplant, as well as other
crops within the Solanaceae family.
 
Publisher Oxford University Press
 
Date 2019-10
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://oar.icrisat.org/11406/1/giz115.pdf
Song, B and Song, Y and Fu, Y and Kizito, E B and Kamenya, S N and Kabod, P N and Liu, H and Muthemba, S and Kariba, R and Njuguna, J and Maina, S and Stomeo, F and Djikeng, A and Hendre, P S and Chen, X and Chen, W and Li, X and Sun, W and Wang, W and Cheng, S and Muchugi, A and Jamnadass, R and Shapiro, H Y and Van Deynze, A and Yang, H and Wang, J and Xu, X and Odeny, D A and Liu, X (2019) Draft genome sequence of Solanum aethiopicum provides insights into disease resistance, drought tolerance, and the evolution of the genome. GigaScience (TSI), 8 (10). pp. 1-16. ISSN 2047-217X