Foliar applications of thidiazuron and putrescine increase leaf iron and chlorophyll concentrations in iron-deficient pot marigold (Calendula officinalis L.)
| Autor: | Abdolhossein Rezaei Nejad, Javier Abadía, Zeinab Izadi |
|---|---|
| Přispěvatelé: | Lorestan University, Agencia Estatal de Investigación (España), European Commission, Abadía Bayona, Javier, Abadía Bayona, Javier [0000-0001-5470-5901] |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
biology
Physiology fungi Thidiazuron food and beverages Plant physiology Plant Science Foliar sprays biology.organism_classification Hydroponics Photosynthesis Iron defciency chemistry.chemical_compound Horticulture Flower production chemistry Calendula officinalis Chlorophyll Perlite Putrescine Ferric-chelate reductase Agronomy and Crop Science |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | 13 Pags.- 7 Figs. The study was aimed to determine the efects of foliar applications of thidiazuron and putrescine, two compounds that may cause iron (Fe) remobilization, in pot marigold (Calendula ofcinalis L.) grown in controlled conditions under a limited Fe supply. In a frst 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 frst 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. ofcinalis when grown in controlled conditions. This research was fnanced by Lorestan University, Iran. Partial support for JA was by the Spanish State Research Agency (AEI) co-fnanced with the European Regional Development Fund (FEDER) (projects AGL2016-75226-R and PID2020-115856RBI00; AEI/FEDER, UE). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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