Environmental Modulation of Mini-Clonal Gardens for Cutting Production and Propagation of Hard- and Easy-to-Root <i>Eucalyptus</i> spp
Clonal <i>Eucalyptus</i> propagation is essential for various industry sectors. It requires cuttings to successfully develop adventitious roots (ARs). Environmental conditions are influential on AR development and may be altered to modulate the productivity of hard-to-root clones. The cu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/11/23/3281 |
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| author | Johnatan Vilasboa Cibele T. Da Costa Arthur G. Fett-Neto |
| author_facet | Johnatan Vilasboa Cibele T. Da Costa Arthur G. Fett-Neto |
| author_sort | Johnatan Vilasboa |
| collection | DOAJ |
| description | Clonal <i>Eucalyptus</i> propagation is essential for various industry sectors. It requires cuttings to successfully develop adventitious roots (ARs). Environmental conditions are influential on AR development and may be altered to modulate the productivity of hard-to-root clones. The current knowledge gap in research on the physiological patterns underlying commercial-scale propagation results hinders the design of novel strategies. This study aimed to identify patterns of variation in AR-relevant parameters in contrasting seasons and species with distinct rooting performances. <i>E. dunnii</i> and <i>E.</i> ×<i>urograndis</i> (hard- (hardR) and easy-to-root (easyR), respectively) mini-stumps were subjected to light modulation treatments and to mini-tunnel use (MT) for a year. The treatment impact on the branching and rooting rates was recorded. The carbohydrate content, AR-related gene expression, and mineral nutrition profiles of cuttings from the control (Ctrl) and treated mini-stumps were analyzed. Light treatments were often detrimental to overall productivity, while MTs had a positive effect during summer, when it altered the cutting leaf nutrient profiles. Species and seasonality played large roles in all the assessed parameters. <i>E.</i> ×<i>urograndis</i> was particularly susceptible to seasonality, and its overall superior performance correlated with changes in its gene expression profile from excision to AR formation. These patterns indicate fundamental differences between easyR and hardR clones that contribute to the design of data-driven management strategies aiming to enhance propagation protocols. |
| first_indexed | 2024-03-09T17:35:35Z |
| format | Article |
| id | doaj.art-586f4848934c4369b0d6e84f1a53a5db |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-09T17:35:35Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-586f4848934c4369b0d6e84f1a53a5db2023-11-24T11:55:20ZengMDPI AGPlants2223-77472022-11-011123328110.3390/plants11233281Environmental Modulation of Mini-Clonal Gardens for Cutting Production and Propagation of Hard- and Easy-to-Root <i>Eucalyptus</i> sppJohnatan Vilasboa0Cibele T. Da Costa1Arthur G. Fett-Neto2Plant Physiology Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, RS 91501-970, BrazilPlant Physiology Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, RS 91501-970, BrazilPlant Physiology Laboratory, Federal University of Rio Grande do Sul, Porto Alegre, RS 91501-970, BrazilClonal <i>Eucalyptus</i> propagation is essential for various industry sectors. It requires cuttings to successfully develop adventitious roots (ARs). Environmental conditions are influential on AR development and may be altered to modulate the productivity of hard-to-root clones. The current knowledge gap in research on the physiological patterns underlying commercial-scale propagation results hinders the design of novel strategies. This study aimed to identify patterns of variation in AR-relevant parameters in contrasting seasons and species with distinct rooting performances. <i>E. dunnii</i> and <i>E.</i> ×<i>urograndis</i> (hard- (hardR) and easy-to-root (easyR), respectively) mini-stumps were subjected to light modulation treatments and to mini-tunnel use (MT) for a year. The treatment impact on the branching and rooting rates was recorded. The carbohydrate content, AR-related gene expression, and mineral nutrition profiles of cuttings from the control (Ctrl) and treated mini-stumps were analyzed. Light treatments were often detrimental to overall productivity, while MTs had a positive effect during summer, when it altered the cutting leaf nutrient profiles. Species and seasonality played large roles in all the assessed parameters. <i>E.</i> ×<i>urograndis</i> was particularly susceptible to seasonality, and its overall superior performance correlated with changes in its gene expression profile from excision to AR formation. These patterns indicate fundamental differences between easyR and hardR clones that contribute to the design of data-driven management strategies aiming to enhance propagation protocols.https://www.mdpi.com/2223-7747/11/23/3281adventitious rootingpropagation by cuttingshoot branching<i>Eucalyptus</i>mini-tunnelenvironmental modulation |
| spellingShingle | Johnatan Vilasboa Cibele T. Da Costa Arthur G. Fett-Neto Environmental Modulation of Mini-Clonal Gardens for Cutting Production and Propagation of Hard- and Easy-to-Root <i>Eucalyptus</i> spp Plants adventitious rooting propagation by cutting shoot branching <i>Eucalyptus</i> mini-tunnel environmental modulation |
| title | Environmental Modulation of Mini-Clonal Gardens for Cutting Production and Propagation of Hard- and Easy-to-Root <i>Eucalyptus</i> spp |
| title_full | Environmental Modulation of Mini-Clonal Gardens for Cutting Production and Propagation of Hard- and Easy-to-Root <i>Eucalyptus</i> spp |
| title_fullStr | Environmental Modulation of Mini-Clonal Gardens for Cutting Production and Propagation of Hard- and Easy-to-Root <i>Eucalyptus</i> spp |
| title_full_unstemmed | Environmental Modulation of Mini-Clonal Gardens for Cutting Production and Propagation of Hard- and Easy-to-Root <i>Eucalyptus</i> spp |
| title_short | Environmental Modulation of Mini-Clonal Gardens for Cutting Production and Propagation of Hard- and Easy-to-Root <i>Eucalyptus</i> spp |
| title_sort | environmental modulation of mini clonal gardens for cutting production and propagation of hard and easy to root i eucalyptus i spp |
| topic | adventitious rooting propagation by cutting shoot branching <i>Eucalyptus</i> mini-tunnel environmental modulation |
| url | https://www.mdpi.com/2223-7747/11/23/3281 |
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