Tolerance and potential for bioaccumulation of Alternanthera tenella Colla to cadmium under in vitro conditions

Rodrigues, L. C. A.; Martins, João Paulo Rodrigues; Júnior, Osmar de Almeida; Guilherme, Luiz Roberto Guimarães; Pasqual, Moacir; Castro, Evaristo Mauro de

doi:10.1007/s11240-017-1241-4

Cited by 19 publications

(30 citation statements)

References 65 publications

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“…However, the exposure to exogenous CKs was not a limiting factor for inducing adventitious shoots in A. imperialis. Side shoot formation without supplementation of PGRs in culture media has already been reported in species of the subfamily Tillandsioideae (Resende et al, 2016;Martins et al, 2020). Bromeliads can produce adventitious shoots under abiotic stress during in vitro growth (Martins et al, 2020).…”

Section: Discussionmentioning

confidence: 83%

“…High endogenous CK content can cause hyperaccumulation of phenolic compounds and increase the activity of some enzymes of the antioxidant system (Mamedes-Rodrigues et al, 2019). Plants with high antioxidant system activity may present low photosynthetic pigment content due to the action of reactive oxygen species (ROS) (Gentile et al, 2017;Rodrigues et al, 2017). Likewise, high concentrations of exogenous AUX supplemented in the culture medium can increase the antioxidant system's activity (peroxidase) (Larraburu et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…Likewise, high concentrations of exogenous AUX supplemented in the culture medium can increase the antioxidant system's activity (peroxidase) (Larraburu et al, 2016). Under oxidative stress, plants also grow slowly (Rodrigues et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…In in vitro culture of bromeliads, the supplementation of AUXs in the medium is also frequently reported (Martins et al, 2018a;Resende et al, 2016). For bromeliads, the employment of AUXs has been combined with CKs during in vitro multiplication or isolated during in vitro rooting (Faria et al, 2018;Martins et al, 2018a).…”

Section: Introductionmentioning

confidence: 99%

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Modulation of the anatomical and physiological responses of in vitro grown Alcantarea imperialis induced by NAA and residual effects of BAP

et al. 2020

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During in vitro propagation, cytokinins (CKs) and auxins (AUXs), such as 6-benzylaminopurine (BAP) and 1-naphthaleneacetic acid (NAA), are often used to induce adventitious shoots and roots, respectively. However, it is not clear how CKs affect plants over a long period of in vitro propagation as well as the synergy of direct exposure to AUX with previous CK treatments. The aim was to assess the physiological and anatomical responses of Alcantarea imperialis in function of the interaction of both previous BAP treatments and direct NAA exposure during in vitro propagation. Plants previously grown in vitro were transferred to media containing 0, 5, 10 or 15 μM BAP. After 60 days, the adventitious shoots from each previous BAP treatment were subcultured in media with 0, 2 or 4 μM NAA. Pigment content, anatomical and growth traits were assessed in the plants from each treatment. Both previous BAP treatments and direct NAA exposure altered the anatomy and pigment contents of plants as well as their growth traits. BAP induced negative effects over the long term on physiological status as well as changed the plants’ anatomy. NAA supplementation in the medium can partially reverse the negative effects induced by BAP. The application of 2 μM NAA during in vitro rooting improved the plants’ quality.

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Section: Discussionmentioning

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modulation of the anatomical and physiological responses of in vitro grown Alcantarea imperialis induced by NAA and residual effects of BAP

et al. 2020

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“…Plants subjected to toxic metals need to activate defense machinery and adjust their metabolic responses, particularly the activity and concentration of antioxidant system elements, as well as transport and accumulation of toxic ions (Shahid et al 2014;Viehweger 2014;Khan et al 2018). As a result of metabolism remodeling, HM can be either stabilized in the rhizosphere or accumulated in aboveground organs, in various cellular compartments, contributing to plant tolerance towards their toxicity (Vrbová et al 2013;Rodrigues et al 2017).…”

Section: Introductionmentioning

confidence: 99%

In vitro acclimation to prolonged metallic stress is associated with modulation of antioxidant responses in a woody shrub Daphne jasminea

Wiszniewska

Muszyńska

Kołton

et al. 2019

Plant Cell Tiss Organ Cult

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The study aimed at distinguishing antioxidant responses conditioning acclimation status to metallic stress in a shoot culture of a woody plant Daphne jasminea. Growth, organogenesis, metal accumulation, oxidative stress level and antioxidant responses were compared in the long-term treated shoots (Lt lines) and short-term treated (St lines) with Cd, Ni and Pb in relation to control shoots. Growth rate and organogenic potential were higher in the long-term treated Lt Cd and Lt Pb lines than in respective short-term treated St lines. Lt Ni line proliferated less effectively than St Ni line, whereas biomass accretion was similar in both Ni lines. All heavy metal (HM)-exposed shoots suffered from oxidative stress, however, it was more severe in St than in Lt lines. In the long-term treated lines three major factors were associated with the acclimation status: activity of peroxidase (POD) and accumulation of anthocyanins and carotenoids. POD activity was 4-1.5-times higher in Lt lines than in the control one. Anthocyanin content nearly tripled, while carotenoid content doubled in Lt lines. Other elements of antioxidant system, CAT and SOD, glutathione, ascorbic acid and proline, complemented the action of the "major players" in long-term treated Lt lines depending on heavy metal type. Short-term treated lines responded by accumulation of proteins and a decline in catalase activity. The study demonstrated that long-term heavy metal treatment can be considered acclimation strategy, during which substantial modulation of the antioxidant system occurs. Due to orchestrated action of cytosolic POD, vacuolar anthocyanins and membrane-bound carotenoids HM toxicity could be counteracted in various cellular compartments. Key message Acclimation to heavy metal exposure in D. jasminea shoot cultures involves modulation of antioxidant activity and is conditioned by an orchestrated action of cellular peroxidases, vacuolar anthocyanins and membrane-bound carotenoids.

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Effects of 6-benzylaminopurine on photosystem II functionality and leaf anatomy of in vitro cultivated Aechmea blanchetiana

et al. 2018

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Tolerance and potential for bioaccumulation of Alternanthera tenella Colla to cadmium under in vitro conditions

Cited by 19 publications

References 65 publications

Modulation of the anatomical and physiological responses of in vitro grown Alcantarea imperialis induced by NAA and residual effects of BAP

Modulation of the anatomical and physiological responses of in vitro grown Alcantarea imperialis induced by NAA and residual effects of BAP

In vitro acclimation to prolonged metallic stress is associated with modulation of antioxidant responses in a woody shrub Daphne jasminea

Effects of 6-benzylaminopurine on photosystem II functionality and leaf anatomy of in vitro cultivated Aechmea blanchetiana

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