Root system architecture ( We characterised 98 two‐dimensional and three‐dimensional The two weeds were distinguishable from the crop in similar and predictable ways, suggesting independent evolution of a ‘weedy’ Our findings suggest that despite the double bottlenecks of domestication and de‐domestication, weedy rice nonetheless shows genetic flexibility in the repeated evolution of weedy
Weedy plants are a major constraint on agricultural productivity. Weedy rice is a weed that invades rice fields worldwide and is responsible for reductions in rice yields. Studies to date have detected multiple independent weedy rice origins in different parts of the world. We investigated the origin of weedy rice in Spain and Portugal and found that it has evolved from a cultivated rice variety group grown locally. Iberian weeds carry mutations that reverse domesticated pericarp color to its ancestral red color. Our results imply that management strategies are needed to prevent the evolution of troublesome weeds from cultivated ancestors.
Weedy rice, a damaging conspecific weed of cultivated rice, has arisen multiple times independently around the world. Understanding all weedy rice origins is necessary to create more effective weed management strategies. The origins of weedy rice in Spain and Portugal, where there are no native We used genotyping by sequencing to understand the origin of Iberian weedy rice and its relationship to other weedy, wild, and cultivated rice groups worldwide. We also genotyped candidate genes for shattering and pericarp color. We find that weedy rice in the Iberian Peninsula has primarily evolved through de‐domestication of Our characterization of Iberian weedy rice adds to the growing evidence that de‐domestication of cultivated rice varieties is the main source of weedy rice worldwide. Their evolutionary versatility explains why weedy rice continues to be one of the most problematic weeds of cultivated rice.
- Award ID(s):
- 1947609
- NSF-PAR ID:
- 10370536
- Publisher / Repository:
- Wiley Blackwell (John Wiley & Sons)
- Date Published:
- Journal Name:
- PLANTS, PEOPLE, PLANET
- Volume:
- 4
- Issue:
- 5
- ISSN:
- 2572-2611
- Page Range / eLocation ID:
- p. 499-510
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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