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Phylogeographic analysis of Siraitia grosvenorii in subtropical China provides insight into the origin of cultivated monk fruit and conservation of genetic resources
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  • Bingbin Xie,
  • Bowen Lai,
  • Liping Chen,
  • Sujuan Wei,
  • Shaoqing Tang
Bingbin Xie
Guangxi Normal University

Corresponding Author:[email protected]

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Bowen Lai
Guangxi Normal University
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Liping Chen
Guangxi Normal University
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Sujuan Wei
Guangxi Normal University
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Shaoqing Tang
Guangxi Normal University
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Siraitia grosvenorii, an economically important plant species with high medicinal value, is endemic to subtropical China. To determine the population structure and origin of cultivated S. grosvenorii, we examined the variation in three chloroplast DNA regions (trnR-atpA, trnH-psbA, trnL-trnF) and two nuclear gene orthologs (CHS and EDL2) of S. grosvenorii in 130 individuals, selected from 13 wild populations across its natural distribution range, and 21 cultivated accessions using a phylogeographic approach. The results showed non-overlapping distribution of chlorotypes, three distinct chloroplast genetic groups restricted to different mountain ranges, and comparable nuclear diversity among the distinct geographical groups, suggesting the existence of at least three separate refugia. The current phylogeographic patterns of S. grosvenorii probably resulted from long-term survival in multiple refugia and limited expansion. Our results also demonstrated that wild populations in northeastern Guangxi share the same gene pool as cultivated S. grosvenorii accessions, suggesting that the current cultivars originated from wild populations distributed in northeastern Guangxi. The results of this study provide insight into improving the efficiency of S. grosvenorii breeding using a genetic approach, and outline measures for the conservation of its genetic resources.
14 Oct 2022Submitted to Ecology and Evolution
14 Oct 2022Submission Checks Completed
14 Oct 2022Assigned to Editor
20 Oct 2022Reviewer(s) Assigned
29 Nov 2022Review(s) Completed, Editorial Evaluation Pending
01 Dec 2022Editorial Decision: Revise Minor
07 Feb 20231st Revision Received
09 Feb 2023Submission Checks Completed
09 Feb 2023Assigned to Editor
09 Feb 2023Review(s) Completed, Editorial Evaluation Pending
09 Feb 2023Reviewer(s) Assigned
26 Apr 2023Editorial Decision: Revise Minor
11 May 20232nd Revision Received
12 May 2023Submission Checks Completed
12 May 2023Assigned to Editor
12 May 2023Review(s) Completed, Editorial Evaluation Pending
29 May 2023Editorial Decision: Accept