The phytotoxic effects of selenium–mercury interactions on root growth in Brassica rapa (LvLing)

Bian, Zhiwei; Chen, Jian; Li, Hui; Liu, Dandan; Yang, Lifei; Zhu, Yuelin; Zhu, Wenjiao; Liu, Wei; Ying, Zheng-Zheng

doi:10.1007/s13580-016-0034-8

Cited by 12 publications

(7 citation statements)

References 30 publications

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“…The next step was to study how endogenous H 2 S help plants detoxify Hg + Se. Our previous study found that Hg + Se induced more severe oxidative injury than that of Hg or Se alone in B. rapa [ 10 ]. We studied the effect of altering endogenous H 2 S on oxidative injury in roots upon Hg + Se stress.…”

Section: Resultsmentioning

confidence: 99%

“…Na 2 SeO 3 (sodium selenite) (4 µM) and HgCl 2 (mercury chloride) (1 µM) were applied for root treatment according to our previous study [ 10 ]. NaHS (sodium sulfide) (0.1–16 mM), PAG (DL-propargylglicine) (0.05–4 µM), and HT (hypotaurine) (1–32 µM) were applied as H 2 S donor, H 2 S biosynthesis inhibitor, and H 2 S scavenger, respectively [ 18 ].…”

Section: Methodsmentioning

confidence: 99%

“…Se and Hg frequently coexist in the environment [ 9 ]. Our previous study also found synergistic toxic effect of Se and Hg on Brassica rapa , showing enhanced ROS accumulation and aggravated growth inhibition as compared to Se or Hg alone [ 10 ]. However, we still rarely know the plant signaling regulation in response to Hg + Se combined stress.…”

Section: Introductionmentioning

confidence: 94%

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The Defensive Role of Endogenous H2S in Brassica rapa against Mercury-Selenium Combined Stress

Yang

Bian

et al. 2022

IJMS

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Plants are always exposed to the environment, polluted by multiple trace elements. Hydrogen sulfide (H2S), an endogenous gaseous transmitter in plant cells, can help plant combat single elements with excess concentration. Until now, little has been known about the regulatory role of H2S in response to combined stress of multiple elements. Here we found that combined exposure of mercury (Hg) and selenium (Se) triggered endogenous H2S signal in the roots of Brasscia rapa. However, neither Hg nor Se alone worked on it. In roots upon Hg + Se exposure, the defensive role of endogenous H2S was associated to the decrease in reactive oxygen species (ROS) level, followed by alleviating cell death and recovering root growth. Such findings extend our knowledge of plant H2S in response to multiple stress conditions.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 94%

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The Defensive Role of Endogenous H2S in Brassica rapa against Mercury-Selenium Combined Stress

Yang

Bian

et al. 2022

IJMS

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“…Se reduces MDA, photosynthetic pigments, and tocopherol concentrations in Chinese cabbage (Brassica rapa subsp. pekinensis) buds, thereby reducing the damage on cell membrane under Cd stress (Bian et al 2016). Shekari et al (2019) have measured the physiological indexes of cucumbers under Pb and Cd stress after selenium application.…”

Section: Se Repairs Plant Cell Structure and Functionmentioning

confidence: 99%

Advances in physiological mechanisms of selenium to improve heavy metal stress tolerance in plants

et al. 2022

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Selenium (Se) is a metalloid mineral nutrient for human and animal health. Plants are the main foodstuff source of the Se intake of humans. For plants, the addition of an appropriate amount of Se could promotes growth and development, and improves the tolerance to environmental stress, especially stress from some of heavy metals (HM) stress, such as cadmium (Cd) and mercury (Hg). This paper mainly reviews and summarizes the physiological mechanism of Se in enhancing HM stress tolerance in plants. The antagonistic effect of Se on HM is a comprehensive effect that includes many physiological mechanisms. Se can promote the removal of excessive reactive oxygen species and reduce the oxidative damage of plant cells under HM elements stress. Se participates in the regulation of the transportation and distribution of HM ions in plants, and alleviates the damage caused by of HM stress. Moreover, Se combine with HM elements to form Se-HM complexes and promote the production of phytochelatins (PCs), thereby reducing the accumulation of HM ions in plants. Overall, Se plays an important role in plant response to HM stress, but current studies mainly focus on physiological mechanism, and further in-depth study on the molecular mechanism is essential to confirm the participation of Se in plant response to environmental stress. This review helps to comprehensively understand the physiological mechanism of Se in plant tolerance against to HM stress of plants, and provides important theoretical support for the practical application of Se in environmental remediation and agricultural development.

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“…Several research publications have studied the effect of heavy metals on plant growth and the list includes cadmium (Cd) (Li et al, 2016), lead (Pb) (Hussain Lahori et al, 2017), mercury (Hg) (Fernández-Martínez et al, 2019), manganese (Mn) (Santos et al, 2017), chromium (Cr) (Handa et al, 2019), zinc (Zn) (Mirshekali et al, 2012), copper (Cu) (Tang et al, 2015), arsenic (As) (Tripathi et al, 2017), selenium (Se) (Bian et al, 2016) and antimony (Sb) (Sun et al, 2020) and many of these compounds are highly toxic to humans even at trace amounts. The long-term persistency of these metals in the soil can lead to accumulations in food crops, contamination of water sources, and to decreased soil fertility due to reduced microbial communities (Xu et al, 2018).…”

Section: Soil Remediationmentioning

confidence: 99%

Soil amendments for sustainable agriculture: Microbial organic fertilizers

Bamdad

Papari

Lazarovits³

et al. 2021

Soil Use and Management

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There is an enormous body of the literature, proving that soil amendments enhance plant growth/yield and prevent the impact of pathogens/toxins. To the best of our knowledge, there is no comprehensive assessment focused on the synergistic effects of microorganisms and soil amendments with biochar or compost for upgrading the current fertilizers towards a more sustainable agriculture. The main objective of the present work is to discuss the most current information needed for developing advanced soil amendments using microorganisms along with safe, sustainable and low-cost waste sourced materials. The first step in designing the biofertilizer is the selection of a microorganism from among a variety of bacterial/fungi strains that have been identified as plant growth promoting (PGP) in the literature. This study classifies the effective types of soil microorganisms with respect to their functionality to facilitate the choice of the best compatible microbial strain(s) in order to satisfy the host environment requirements. The second part is dedicated to various inorganic and organic carriers, such as perlite, peat, fly ash and compost, for delivering of microorganism into the soils. The role of carriers in the survival and the functional contribution of the microbes to soilplant systems are investigated. Lastly, biochar is evaluated as a promising microbial carrier together with its influence on the soil biota including microorganisms and plants. The superior features of biochar, for example high surface area, porosity, customizable structure, high stability, carbon sequestration and synergy, with other fertilizers are also discussed.

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The phytotoxic effects of selenium–mercury interactions on root growth in Brassica rapa (LvLing)

Cited by 12 publications

References 30 publications

The Defensive Role of Endogenous H2S in Brassica rapa against Mercury-Selenium Combined Stress

The Defensive Role of Endogenous H2S in Brassica rapa against Mercury-Selenium Combined Stress

Advances in physiological mechanisms of selenium to improve heavy metal stress tolerance in plants

Soil amendments for sustainable agriculture: Microbial organic fertilizers

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