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Summary Mosses hold a unique position in plant evolution and are crucial for protecting natural, long‐term carbon storage systems such as permafrost and bogs. Due to small stature, mosses grow close to the soil surface and are exposed to high levels of CO2, produced by soil respiration. However, the impact of elevated CO2(eCO2) levels on mosses remains underexplored.We determined the growth responses of the mossPhyscomitrium patensto eCO2in combination with different nitrogen levels and characterized the underlying physiological and metabolic changes.Three distinct growth characteristics, an early transition to caulonema, the development of longer, highly pigmented rhizoids, and increased biomass, define the phenotypic responses ofP. patensto eCO2. Elevated CO2impacts growth by enhancing the level of a sugar signaling metabolite, T6P. The quantity and form of nitrogen source influences these metabolic and phenotypic changes. Under eCO2,P. patensexhibits a diffused growth pattern in the presence of nitrate, but ammonium supplementation results in dense growth with tall gametophores, demonstrating high phenotypic plasticity under different environments.These results provide a framework for comparing the eCO2responses ofP. patenswith other plant groups and provide crucial insights into moss growth that may benefit climate change models.
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Translational regulation contributes to the elevated CO 2 response in two Solanum species
Summary Understanding the impact of elevated CO2(eCO2) in global agriculture is important given climate change projections. Breeding climate‐resilient crops depends on genetic variation within naturally varying populations. The effect of genetic variation in response to eCO2is poorly understood, especially in crop species. We describe the different ways in whichSolanum lycopersicumand its wild relativeS. pennelliirespond to eCO2, from cell anatomy, to the transcriptome, and metabolome. We further validate the importance of translational regulation as a potential mechanism for plants to adaptively respond to rising levels of atmospheric CO2.
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- Award ID(s):
- 1856749
- PAR ID:
- 10458079
- Publisher / Repository:
- Wiley-Blackwell
- Date Published:
- Journal Name:
- The Plant Journal
- Volume:
- 102
- Issue:
- 2
- ISSN:
- 0960-7412
- Page Range / eLocation ID:
- p. 383-397
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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