Countering elevated CO2 induced Fe and Zn reduction in Arabidopsis seeds

A - Papers appearing in refereed journals

Sun, P., Isner, J., Coupel-Ledru, A., Zhang, Q., Pridgeon, A., He, Y., Menguer, P., Miller, A. J., Sanders, D., McGrath, S. P., Noothong, F., Liang, Y. and Hetherington, A. 2022. Countering elevated CO2 induced Fe and Zn reduction in Arabidopsis seeds. New Phytologist. https://doi.org/10.1111/nph.18290

AuthorsSun, P., Isner, J., Coupel-Ledru, A., Zhang, Q., Pridgeon, A., He, Y., Menguer, P., Miller, A. J., Sanders, D., McGrath, S. P., Noothong, F., Liang, Y. and Hetherington, A.
Abstract

Growth at increased concentrations of CO2 induces a reduction in seed zinc (Zn) and iron (Fe). Using Arabidopsis thaliana, we investigated whether this could be mitigated by reducing the elevated CO2-induced decrease in transpiration.
We used an infrared imaging-based screen to isolate mutants in At1g08080 that encodes ALPHA CARBONIC ANHYDRASE 7 (ACA7). aca7 mutant alleles display wild-type (WT) responses to abscisic acid (ABA) and light but are compromised in their response to elevated CO2. ACA7 is expressed in guard cells. When aca7 mutants are grown at 1000 ppm CO2 they exhibit higher transpiration and higher seed Fe and Zn content than WT grown under the same conditions. Our data show that by increasing transpiration it is possible to partially mitigate the reduction in seed Fe and Zn content when Arabidopsis is grown at elevated CO2.

KeywordsStomatal function; C02 signalling pathway; Zn ; Fe; Zinc; Iron; Arabidopsis thaliana; Alpha carbonic anhydrases
Year of Publication2022
JournalNew Phytologist
Digital Object Identifier (DOI)https://doi.org/10.1111/nph.18290
PubMed ID35637611
Open accessPublished as green open access
FunderBiotechnology and Biological Sciences Research Council
Funder project or codeS2N - Soil to Nutrition - Work package 1 (WP1) - Optimising nutrient flows and pools in the soil-plant-biota system
Accepted author manuscript
Output statusPublished
Publication dates
Online30 May 2022
Publication process dates
Accepted17 May 2022
PublisherWiley
ISSN0028-646X

Permalink - https://repository.rothamsted.ac.uk/item/98930/countering-elevated-co2-induced-fe-and-zn-reduction-in-arabidopsis-seeds

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