2021
DOI: 10.1590/1413-7054202145020220
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Temperature and GA3 on ROS and cytogenetic stability during in vitro cultivation of strelitzia zygotic embryos

Abstract: Tropical species may require higher temperatures as well as higher growth regulator concentrations for in vitro development. Since these conditions may affect plant metabolism, the objective of this study was to identify how different temperatures and gibberellin concentrations may affect the in vitro development of strelitzia embryos, analyzing the effect on ROS and cytogenetic stability. Zygotic embryos were cultivated on MS medium supplemented with 5, 10 and 20 µM GA3 under temperatures of 25 °C, 30/25 °C a… Show more

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Cited by 6 publications
(9 citation statements)
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“…Similar observations on elevated SOD activity during the acclimatization period have been reported by de Souza et al (2021). In addition, with high levels of PPFD, the enhanced CAT, SOD, CAT, and GPX activity has been documented which they able to reduce ROS in several plants Dieffenbachia cultivars (Figueiredo et al 2021;Ahmed et al 2020;Ahmed and Anis 2014b, a;Perveen and Anis 2015). Our data demonstrate that effective photosynthetic machinery developed in acclimated microshoots significantly decreased oxidative stress throughout the acclimatization period.…”
Section: Discussionsupporting
confidence: 89%
“…Similar observations on elevated SOD activity during the acclimatization period have been reported by de Souza et al (2021). In addition, with high levels of PPFD, the enhanced CAT, SOD, CAT, and GPX activity has been documented which they able to reduce ROS in several plants Dieffenbachia cultivars (Figueiredo et al 2021;Ahmed et al 2020;Ahmed and Anis 2014b, a;Perveen and Anis 2015). Our data demonstrate that effective photosynthetic machinery developed in acclimated microshoots significantly decreased oxidative stress throughout the acclimatization period.…”
Section: Discussionsupporting
confidence: 89%
“…This better growth performance of micropropagated may be related to the presence of a root system in the plants at the time of planting, which allows the absorption of water and nutrients, providing greater advantage during acclimatization and establishment of the plants. in the field (Souza et al, 2021). Similar results were verified in an experiment with heliconia, in which the height of the plant and the number of tillers were higher when derived from in vitro cultivation, in relation to propagation by rhizome (Ulisses et al, 2018).…”
Section: Resultssupporting
confidence: 79%
“…While at 2 and 4 MAP the total chlorophyll index was higher in M+MAF plants (Figure 4C). It is known that the root system already formed in micropropagated plantlets favours the absorption of water and nutrients from the soil, including nitrogen, which is an important component of chlorophyll molecules (Lopes et al, 2019;Souza et al, 2021). In addition, the results demonstrate the symbiotic efficacy of G. albida under the studied conditions, since AMF produced beneficial effects on plant growth.…”
Section: Resultsmentioning
confidence: 55%
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“…During S. fusiforme holdfast regeneration, GA 3 may achieve photosynthesis-promoting effects by regulating the photoperiod and light sensitivity. In a previous study, addition of 20 mM GA 3 to the in vitro medium of Strelitzia reginae conidia embryos increase nitrate reductase activity (Figueiredo et al, 2021). In this study, exogenous application of 1.5 GA 3 mg•L -1 significantly promoted the uptake and transformation of nitratenitrogen by S. fusiforme holdfasts.…”
Section: Discussionsupporting
confidence: 62%