Sequencing of Chinese castor lines reveals genetic signatures of selection and yield-associated loci.
Nat Commun
; 10(1): 3418, 2019 07 31.
Article
in En
| MEDLINE
| ID: mdl-31366935
ABSTRACT
Oil produced by castor (Ricinus communis) has broad industrial applications. However, knowledge on the genetic diversity, especially genetic alterations that occurred during domestication and subsequent traits selection, of this oil crop is limited. Here, our population genomics analyses show that the Chinese castors have developed a geographic pattern, classified into the southern-, the middle-, and the northern-China groups. We detect a number of candidate genomic loci that are associated with the selection signals during the geographical differentiation and domestication. Using genome-wide association analysis, we identify candidate genes associated with nine agronomically important traits. One of the candidate genes encoding a glycosyltransferase related to cellulose and lignin biosynthesis is associated with both capsule dehiscence and endocarp thickness. We hypothesize that the abundance of cellulose or lignin in endocarp is an important factor for capsule dehiscence. Our results provide foundation for castor breeding and genetic study.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Ricinus
/
Plant Oils
/
Genome, Plant
/
Fruit
Type of study:
Prognostic_studies
/
Risk_factors_studies
Country/Region as subject:
Asia
Language:
En
Journal:
Nat Commun
Journal subject:
BIOLOGIA
/
CIENCIA
Year:
2019
Document type:
Article
Affiliation country:
China