| Autor: |
Gisela Adelina Rolón-Cárdenas, Joana Guadalupe Martínez-Martínez, Jackeline Lizzeta Arvizu-Gómez, Ruth Elena Soria-Guerra, Ma. Catalina Alfaro-De la Torre, Fulgencio Alatorre-Cobos, Jesús Rubio-Santiago, Regina de Montserrat González-Balderas, Candy Carranza-Álvarez, José Roberto Macías-Pérez, Liseth Rubí Aldaba-Muruato, Alejandro Hernández-Morales |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Plants, Vol 11, Iss 11, p 1447 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2223-7747 |
| DOI: |
10.3390/plants11111447 |
| Popis: |
The Typha genus comprises plant species extensively studied for phytoremediation processes. Recently, Pseudomonas rhodesiae GRC140, an IAA-producing bacterium, was isolated from Typha latifolia roots. This bacterium stimulates the emergence of lateral roots of Arabidopsis thaliana in the presence and absence of cadmium. However, the bacterial influence on cadmium accumulation by the plant has not been determined. Moreover, the P. rhodesiae GRC140 effect in Cd phytoextraction by T. latifolia remains poorly understood. In this work, an axenic hydroponic culture of T. latifolia was established. The plants were used to evaluate the effects of cadmium stress in axenic plants and determine the effects of P. rhodesiae GRC140 and exogenous indole acetic acid (IAA) on Cd tolerance and Cd uptake by T. latifolia. Biomass production, total chlorophyll content, root electrolyte leakage, catalase activity, total glutathione, and Cd content were determined. The results showed that Cd reduces shoot biomass and increases total glutathione and Cd content in a dose-dependent manner in root tissues. Furthermore, P. rhodesiae GRC140 increased Cd translocation to the shoots, while IAA increased the Cd accumulation in plant roots, indicating that both treatments increase Cd removal by T. latifolia plants. These results indicate that axenic plants in hydroponic systems are adequate to evaluate the Cd effects in plants and suggest that T. latifolia phytoextraction abilities could be improved by P. rhodesiae GRC140 and exogenous IAA application. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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