Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Journal of Ecological Engineering

1 2025

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: CaCl2 stress

Sortuj według:

Ogranicz wyniki do:

Morphological and physiological differences in fern Athyrium nipponicum exposed to drought, salinity and depolymerized sodium alginate

Pietrak Anna, Salachna Piotr, Łopusiewicz Łukasz

Journal of Ecological Engineering

2025

Vol. 26, nr 5

28--39

A significant gap remains in the understanding of the systemic responses of ferns to multiple stress factors and the application of biostimulants. Effects of single drought stress (DS), salinity stress (CaCl2), combined stress (CaCl2 +DS) and depolymerized sodium alginate (DA) on morphology and physiology characteristics of the fern Athyrium nipponicum cv. Metallicum in a pot experimental were investigated. Plants grown in a plastic tunnel were treated with CaCl2 at a target concentration of 100 mmol dm-3 and DA at 100 mg dm-3 under normal irrigation and drought stress conditions. Combined stress (CaCl2+DS) most severely reduced plant height, plant width, leaf number, and leaf length. Plant leaf and rhizome weights were reduced to a significantly greater degree under water deficit stress than excess soluble salts in the substrate. The plants exposed to CaCl2 had elevated leaf carotenoids (by 40.9%), total polyphenols (by 22.1%) and total flavonoid (by 15.0%) content relative to control plants. The application of DA had no apparent effect on the aboveground part of the plants, while it increased the fresh and dry weights of the rhizomes by 48.1% and 51.0%, respectively. Moreover, DA application increased the chlorophyll a, chlorophyll b, and total chlorophyll contents of leaves by 53.0%, 56.3%, and 53.1%, respectively, compared to the control. Application of DA under single (CaCl2 +DA and DS+DA) and combined (CaCl2+DS+DA) stress conditions significantly reduced the fresh and dry weights loss of rhizomes. Comparing the content of secondary metabolites in fern, rhizomes had 4.8 times more total polyphenols and 3.6 times more total flavonoids than leaves. The results suggest the potential application of DA in mitigating the adverse effects of salinity and water stress during fern cultivation.