Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1016/j.plantsci.2023.111919 |
Licence  |
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| Title (Primary) | Phytosiderophore pathway response in barley exposed to iron, zinc or copper starvation |
| Author | Aleksza, D.; Spiridon, A.; Tarkka, M.; Hauser, M.-T.; Hann, S.; Causon, T.; Kratena, N.; Stanetty, C.; George, T.S.; Russell, J.; Oburger, E. |
| Source Titel | Plant Science |
| Year | 2024 |
| Department | BOOEK; iDiv |
| Volume | 339 |
| Page From | art. 111919 |
| Language | englisch |
| Topic | T5 Future Landscapes |
| Supplements | https://ars.els-cdn.com/content/image/1-s2.0-S0168945223003369-mmc1.pdf https://ars.els-cdn.com/content/image/1-s2.0-S0168945223003369-mmc2.xlsx |
| Keywords | Root exudation; Barley; Biofortification; Iron; Zinc; Copper deficiency; Mugineic acid; Phytosiderophore |
| Abstract | Efficient micronutrient acquisition is a critical factor in selecting micronutrient dense
crops for human consumption. Enhanced exudation and re-uptake of metal
chelators, so-called phytosiderophores, by roots of graminaceous plants has
been implicated in efficient micronutrient acquisition. We compared PS biosynthesis
and exudation as a response mechanism to either Fe, Zn or Cu starvation. Two
barley (Hordeum vulgare L.) lines with
contrasting micronutrient grain yields were grown hydroponically and PS
exudation (LC-MS) and root gene expression (RNAseq) were determined after
either Fe, Zn, or Cu starvation. The response strength of the PS pathway was
micronutrient dependent and decreased in the order Fe > Zn > Cu
deficiency. We observed a stronger expression of PS pathway genes and greater
PS exudation in the barley line with large micronutrient grain yield suggesting
that a highly expressed PS pathway might be an important trait involved in high
micronutrient accumulation. In addition to several metal specific transporters,
we also found that the expression of IRO2 and bHLH156 transcription factors was
not only induced under Fe but also under Zn and Cu deficiency. Our study
delivers important insights into the role of the PS pathway in the acquisition
of different micronutrients. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=28611 |
| Aleksza, D., Spiridon, A., Tarkka, M., Hauser, M.-T., Hann, S., Causon, T., Kratena, N., Stanetty, C., George, T.S., Russell, J., Oburger, E. (2024): Phytosiderophore pathway response in barley exposed to iron, zinc or copper starvation Plant Sci. 339 , art. 111919 10.1016/j.plantsci.2023.111919 |
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