The role of phytochromes in cadmium stress responses in tomato

Gaion, Lucas Aparecido; Lorevice, Paulo Guilherme; Monteiro, Carolina Cristina; Gavassi, Marina Alves; D’Amico-Damião, Victor; Gratão, Priscila Lupino; Gasparino, Eduardo Custódio; Carvalho, Rogério Falleiros

doi:10.1590/1678-4499.2016417

Cited by 5 publications

(2 citation statements)

References 46 publications

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“…Guo et al (2022) [23] speculated that red light, in contrast to blue light, increases the sensitivity of cucumbers to Cd toxicity by promoting Cd accumulation in a phytochrome B-dependent manner [23]. However, Gaion et al (2017) [49] reported that phytochromes do not determine Cd stress tolerance in tomato plants [49]. Despite this discrepancy, additional research is necessary to elucidate the signaling pathway and specific mechanisms by which light quality regulates plant tolerance to Cd-induced phytotoxicity.…”

Section: The Effect Of Light Qualities On Leaf Anatomy and The Ultras...mentioning

confidence: 99%

Blue Light Enhances Cadmium Tolerance of the Aquatic Macrophyte Potamogeton crispus

Wang

Zhang

et al. 2023

Plants

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Cadmium (Cd) is highly toxic and widely distributed in aquatic systems due to its high solubility and mobility in water, which can severely inhibit the survival of aquatic macrophytes. The phytotoxicity of Cd depends on environmental factors; however, it remains unclear whether and how light quality affects its toxicity on aquatic macrophytes. In this study, we investigated the effects of Cd on aquatic macrophytes Potamogeton crispus under different light qualities (white, blue, and red light). We evaluated morphological and photo-physiological traits, as well as the cellular antioxidant defense system. Our findings indicate that P. crispus under Cd stress showed notable damage in leaf morphology, decreased photosynthetic efficiency, inhibited HCO3− uptake, and reduced antioxidant enzyme activities, as well as oxidative damage indicated by MDA accumulation and superoxide (O2−) overproduction. However, compared with white or red light under Cd stress, blue light reduced structural damage and oxidative stress caused by Cd while increasing pigment synthesis and photosynthetic efficiency, as well as increasing ascorbate peroxidase (APX) activity. In conclusion, the changes induced by blue light in P. crispus’s photosynthesis and antioxidant system strengthen its tolerance to Cd. Further research on signal transmission in relation to light quality in Cd-exposed aquatic plants is still needed.

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Section: The Effect Of Light Qualities On Leaf Anatomy and The Ultras...mentioning

confidence: 99%

Blue Light Enhances Cadmium Tolerance of the Aquatic Macrophyte Potamogeton crispus

Wang

Zhang

et al. 2023

Plants

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“…In 7‐day‐old phyB1 and phyB2 mutant tomato seedlings, Gavassi et al (2017) reported higher dry weight and lower MDA than the WT after cadmium (Cd) treatment (65 mM of CdCl 2 ). However, both tomato mutants did not show any changes compared to the WT in 21‐day‐old plants under Cd treatment (150 mM of CdCl 2 ) (Gaion et al, 2018). However, further studies are needed to elucidate whether phyB influences HM stress responses, considering the lack of reports about this topic.…”

Section: Heavy Metal Stressmentioning

confidence: 99%

Phytochrome type B family: The abiotic stress responses signaller in plants

Silva

D’Amico-Damião

Carvalho

2020

Annals of Applied Biology

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Photoreceptors are primarily known as key photomorphogenic modulators of various physiological events during plant development. Although there are different groups of photoreceptors, the phytochrome B (phyB) family mediates developmental responses in a wide range of plant species, from seed germination to flowering. In addition, these molecules also regulate abiotic stress acclimation responses, such as salinity, drought, low/high temperature, high light and heavy metals. The signalling pathways mediated by phyB could enhance plant resistance to environmental stresses, as phyB photoreceptors reduce leaf transpiration, increase the antioxidant system, enhance protective pigments and increase the expression of genes related to plant stress acclimation. Thus, the elucidation of positive or negative roles for phyB in these stress tolerance characteristics would provide essential knowledge for genetic engineering, improving plant growth and development in critical environments. In this review, we cover the main findings on how the phyB family works to modulate abiotic stress by discussing biochemical and molecular aspects of the underlying mechanisms operated by these photoreceptors.

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