Differential effects of copper sulfate (CuSO4) and copper tetraamine sulfate complex ([Cu(NH3)4]SO4) on Cu-enzyme activities, Cu and Fe levels, and lignin deposition in Cu-deficient tobacco (Nicotiana rustica) plants

Knowledge of the effect of different copper (Cu) chemical forms and their application mode on meeting the plant’s Cu requirement is much more limited than that of other micronutrients. In this work, hydroponically-grown tobacco ( Nicotiana rustica L . ) plants were pre-cultured for thirty days under...

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Vydáno v:	Acta physiologiae plantarum Ročník 46; číslo 3; s. 34
Hlavní autoři:	Bahrami-Rad, Sara, Hajiboland, Roghieh
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	Berlin/Heidelberg Springer Berlin Heidelberg 01.03.2024 Springer Nature B.V
Témata:	Agriculture Ammonia biomass Biomedical and Life Sciences catechol oxidase Cellulose Copper copper deficiency Copper sulfate Deposition diamine oxidase Diamines Enzymatic activity Enzymes Fertilizers Foliar applications Hydroponics Iron Leaves Life Sciences Lignin lignin content mechanical stress Micronutrients Middle age Nicotiana rustica Nutrition Original Article Peroxidase phenolic compounds Phenylalanine Phenylalanine ammonia-lyase Physiology Plant Anatomy/Development Plant Biochemistry Plant Genetics and Genomics Plant Pathology Plant Physiology Polyphenol oxidase Spraying starvation Structural strength Sulfates Superoxide dismutase Tobacco Translocation Lignin Copper-containing enzymes Cell wall-bound phenolics Diamine oxidase Copper–iron interaction Polyphenol oxidase
ISSN:	0137-5881, 1861-1664
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Shrnutí:	Knowledge of the effect of different copper (Cu) chemical forms and their application mode on meeting the plant’s Cu requirement is much more limited than that of other micronutrients. In this work, hydroponically-grown tobacco ( Nicotiana rustica L . ) plants were pre-cultured for thirty days under Cu-sufficient and Cu-deficient conditions, then the Cu-deficient plants were resupplied with 0.5 µM CuSO 4 (CuSu) or Cu tetraamine sulfate complex ([Cu(NH 3 ) 4 ]SO 4 ) (CuAm) through roots or leaves. The biomass of plants was resumed almost equally by both chemical forms of Cu. Cu’s leaf and root concentrations exhibited a more pronounced response to CuSu application. In contrast, the restoration of the activities of Cu-containing enzymes (superoxide dismutase, polyphenol oxidase, diamine oxidase) was either similar to or, in some cases, even higher when CuAm was applied. The leaf iron concentration was also diminished under Cu starvation and increased by Cu resupply more effectively by CuAm. The activity of phenylalanine ammonia-lyase and peroxidase, phenolics accumulation, and lignin deposition was significantly influenced by Cu deficiency and resupply. Foliar-applied CuAm and root-applied CuSu were the most effective treatments for the resumption of lignin concentration. Results showed efficient re-translocation of foliar-applied Cu. However, the activity of defense enzymes and lignin content suggests that foliar spraying likely induced mechanical stress in the leaves. Furthermore, the effect of the accompanying ion (NH 4 + ) was likely the mechanism for the superior effect of CuAm in the induction of structural strength through lignin deposition and improvement of Fe uptake in plants compared with CuSu.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23
ISSN:	0137-5881 1861-1664
DOI:	10.1007/s11738-024-03669-1