Abstract
Many winter annual crops, such as pennycress (Thlaspi arvense L.), are subjected to heavy precipitation events during their growing season. Therefore, it is essential to identify pennycress accessions with natural variation in flooding resilience. We used climate modeling data to assess spring soil moisture levels in the geographic origins of 471 natural pennycress accessions. We selected 34 accessions with variation in predicted soil moisture and tested survivability under prolonged waterlogging at the rosette stage. It took seven weeks for the first accessions to die, indicating that pennycress is hardy to prolonged waterlogging at the vegetative stage. Furthermore, we chose ‘susceptible’ and ‘tolerant’ accessions to waterlog for one week at the reproductive stage, the growth stage aligned with spring rainfall. Six accessions had significantly reduced seed weight at maturity and two had minimal impacts on growth and seed yield after waterlogging and can be further explored for adaptive traits.
| Original language | English |
|---|---|
| Article number | 2455414 |
| Journal | Journal of Plant Interactions |
| Volume | 20 |
| Issue number | 1 |
| DOIs | |
| State | Published - 2025 |
Funding
This research was funded by the U.S. Department of Energy, Office of Science, Office of Biological and Environmental Research, Genomic Science Program under grant DE-SC0021286. Combs-Giroir was also financially supported in part by the National Science Foundation Graduate Research Fellowship Program. We would like to thank the numerous citizen scientists who assisted with collecting seeds for the IPReP collection and acknowledge Maliheh Esfahanian, Barsanti Gautam, Donald Wyse, Winthrop Phippen, Ratan Chopra, and John Sedbrook for organizing the collection. We also acknowledge the IPReP team for collectively bulking seed from the natural accessions and for feedback and direction related to this project. We would like to acknowledge Gary Posey, Thiranya Wanigarathna, Alex Solum, Molly Dougherty, Rosemary Ball, and Tara Creech for assistance with plant care & maintenance and/or data collection.
Keywords
- Thlaspi arvense
- climate modeling
- root hypoxia
- soil moisture