Disturbed electron transport beyond PSI changes metabolome and transcriptome in Zn-deficient soybean
Jazyk angličtina Země Nizozemsko Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
PubMed
37852568
DOI
10.1016/j.bbabio.2023.149018
PII: S0005-2728(23)00064-6
Knihovny.cz E-zdroje
- Klíčová slova
- Chlorophyll fluorescence, Metabolomics, Metalloproteomics, Soybean, Transcriptomics, Zinc deficiency,
- MeSH
- antioxidancia MeSH
- chlorofyl * metabolismus MeSH
- Glycine max * genetika MeSH
- metabolom MeSH
- transkriptom MeSH
- transport elektronů MeSH
- zinek MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- antioxidancia MeSH
- chlorofyl * MeSH
- zinek MeSH
Low Zn availability in soils is a problem in many parts of the world, with tremendous consequences for food and feed production because Zn deficiency affects the yield and quality of plants. In this study we investigated the consequences of Zn-limitation in hydroponically cultivated soybean (Glycine max L.) plants. Parameters of photosynthesis biophysics were determined by spatially and spectrally resolved Kautsky and OJIP fluorescence kinetics and oxygen production at two time points (V4 stage, after five weeks, and pod development stage, R5-R6, after 8-10 weeks). Lower NPQ at 730 nm and lower quantum yield of electron transport flux until PSI acceptors were observed, indicating an inhibition of the PSI acceptor side. Metalloproteomics showed that down-regulation of Cu/Zn-superoxide dismutase (CuZnSOD) and Zn‑carbonic anhydrase (CA) were primary consequences of Zn-limitation. This explained the effects on photosynthesis in terms of decreased use of excitons, which consequently led to oxidative stress. Indeed, untargeted metabolomics revealed an accumulation of lipid oxidation products in the Zn-deficient leaves. Further response to Zn deficiency included up-regulation of gene expression of cell wall metabolism, response to (a)biotic stressors and antioxidant activity, which correlated with accumulation of antioxidants, Vit B6, (iso)flavonoids and phytoalexins.
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