Physio-morphological and biochemical responses of pot marigold (Calendula officinalis L.) to split iron nutrition

Izadi, Zeinab; Nejad, Abdolhossein Rezaei; Abadı́a, Javier

doi:10.1007/s11738-020-3011-x

Cited by 7 publications

(3 citation statements)

References 44 publications

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“…The aim of this work was to assess the hypothesis that foliar applications of the compounds TDZ and PUT, known to elicit NO production, can alleviate to some extent Fe deficiency in pot marigold (C. officinalis) grown under limited Fe supply, by mobilizing pre-existing plant Fe pools. Pot marigold is an ornamental species that when grown in controlled conditions requires supplementation with synthetic Fe(III)-chelates for optimal flower production (Izadi et al 2020). In this study, we have monitored the changes caused by repeated foliar applications of TDZ and PUT on leaf photosynthetic pigments, photosynthesis rates, and Fe concentrations in C. officinalis grown in controlled conditions.…”

Section: Introductionmentioning

confidence: 99%

Foliar applications of thidiazuron and putrescine increase leaf iron and chlorophyll concentrations in iron-deficient pot marigold (Calendula officinalis L.)

2021

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The study was aimed to determine the effects of foliar applications of thidiazuron and putrescine, two compounds that may cause iron (Fe) remobilization, in pot marigold (Calendula officinalis L.) grown in controlled conditions under a limited Fe supply. In a first experiment, plants were grown in a greenhouse in a mixture of sand and perlite with pre-growth/growth Fe concentrations ranging from 0 to 20 µM, and treated three consecutive times with foliar sprays of 0 or 45.4 µM thidiazuron. In a second experiment, plants were grown in a greenhouse in hydroponics with pre-growth/growth Fe concentrations in the nutrient solution ranging from 0 to 20 µM, and treated three consecutive times with foliar sprays of 0, 2.27, or 5.67 mM putrescine. Parameters measured included leaf photosynthetic pigments and Fe concentrations, root ferric chelate reductase activities, photosynthesis rates and peroxidase in leaf extracts in the first experiment, and leaf photosynthetic pigments, leaf and root micronutrient concentrations, root ferric chelate reductase activities, and superoxide dismutase and peroxidase activities in leaf extracts in the second experiment. Results indicate that foliar thidiazuron and putrescine treatments in the µM and mM ranges, respectively, improve Fe transport to the leaf under zero or low supply of Fe. This indicates that foliar treatments with thidiazuron and putrescine increase remobilization of pre-existing plant Fe pools. This could be an additional tool for the optimization of Fe nutrition in ornamental plants such as C. officinalis when grown in controlled conditions.

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Section: Introductionmentioning

confidence: 99%

Foliar applications of thidiazuron and putrescine increase leaf iron and chlorophyll concentrations in iron-deficient pot marigold (Calendula officinalis L.)

2021

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“…Iron plays roles in chlorophyll [45] and carotenoid biosynthesis [46] and is also part of many components in the chloroplast thylakoid membrane, which can be assembled only when all of them are present [45,47]. For instance, Calendula officinalis grown under low Fe showed decreases in Chl and Car concentrations under low Fe in the growth media [48,49]. An increase in photosynthetic pigment levels leads to higher photosynthetic rates, and therefore increases the resources for the formation and development of the root system.…”

Section: Discussionmentioning

confidence: 99%

Iron Chelate Improves Rooting in Indole-3-Butyric Acid-Treated Rosemary (Rosmarinus officinalis) Stem Cuttings

2022

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Adventitious root formation in stem cuttings is affected by exogenous and endogenous factors. The study assessed the effect of Fe(III)-EDDHA (ethylenediamine-N,N-bis 2-hydroxyphenyl acetic acid) on the rooting of 4 indol-3-butyric acid (IBA)-treated hardwood cuttings of the aromatic and medicinal species Rosmarinus officinalis. Cuttings treated with 0, 1000, 2000 or 3000 mg L−1 IBA were placed in pots filled with sand:perlite mixture and irrigated daily with nutrient solution pH 5.8, containing 0, 5, 10 or 20 µM Fe(III)-EDDHA. Ten days later, the number of new emerging roots were recorded. After 20 days, leaf photosynthetic pigments and morphological traits, including root number, fresh (FW) and dry weight (DW), shoot FW and DW, mean length of the longest roots, number of new shoots and new growth in old shoots, were measured. Finally, plants were transplanted to pots filled with a sand:soil mixture and survival was measured after 10 days. Results indicate that Fe application promotes root emergence and improves root and shoot biomass, leaf photosynthetic pigment concentrations and survival percentage. This indicates that using low concentrations of Fe(III)-EDDHA (5–20 µM) in the growth medium could be a good management strategy to facilitate the production of vigorous R. officinalis plants from hardwood cuttings.

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“…It has been cultivated extensively by Egyptians, Arabs, Greeks, and Hindus for its importance in herbal medicine. The calendula extracts develop a broad range of pharmacological activities (anti-in ammatory, antipyretic, antimicrobial, antifungal, antiviral, and anti-genotoxic properties) and are utilized as antiseptic, tinctures, ointments, stimulant, anti-spasmodic, and diaphoretic agents (Izadi et al 2020).…”

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Effects of Fly Ash Amended Soil on Biochemical Attributes and Antioxidant Responses of Medicinally Potent Plant Calendula Officinalis

Varshney

Dahiya

Mohan

2021

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Phytoremediation of fly ash (FA) deposits using metal tolerant plant species has become an important eco-friendly technique for reclamation nowadays. The present study was carried out to determine the impact of FA application on photosynthetic pigments (chlorophyll a, chlorophyll b, total chlorophyll, and carotenoids), biochemical parameters (soluble protein, reducing sugar, nitrate and nitrate reductase (NR) activity), metal accumulation (Fe, Zn, Cu, Co, Cd, Cr, and Mn) and antioxidant defense activity (SOD, CAT, POD, and APX) of Calendula officinalis. With this aim in mind, under pot culture conditions, Calendula officinalis was grown in different combinations of FA and soil which include: Control, 10%, 20%, 40%, 60%, 80%, and 100% FA. The results from the study indicated that the addition of FA (40%) in soil not only improved the physico-chemical properties of soil but also increased the photosynthetic pigment and other biochemical parameters in plants, however, these parameters declined under high FA applications. On the other hand, antioxidant enzyme activities (SOD, CAT, APX and Peroxidase) of Calendula increased with increasing FA application to combat heavy metal stress from fly ash. At high FA applications, antioxidant enzyme levels increased in leaves thereby reflecting heavy metal stress and mitigation of reactive oxygen species.

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Physio-morphological and biochemical responses of pot marigold (Calendula officinalis L.) to split iron nutrition

Cited by 7 publications

References 44 publications

Foliar applications of thidiazuron and putrescine increase leaf iron and chlorophyll concentrations in iron-deficient pot marigold (Calendula officinalis L.)

Foliar applications of thidiazuron and putrescine increase leaf iron and chlorophyll concentrations in iron-deficient pot marigold (Calendula officinalis L.)

Iron Chelate Improves Rooting in Indole-3-Butyric Acid-Treated Rosemary (Rosmarinus officinalis) Stem Cuttings

Effects of Fly Ash Amended Soil on Biochemical Attributes and Antioxidant Responses of Medicinally Potent Plant Calendula Officinalis

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