Suspended cells of metallicolous and nonmetallicolous Viola species tolerate, accumulate and detoxify zinc and lead

Sychta, Klaudia; Słomka, Aneta; Suski, Szymon; Fiedor, Elżbieta; Gregoraszczuk, Ewa Ł.; Kuta, Elżbieta

doi:10.1016/j.plaphy.2018.10.013

Cited by 14 publications

(20 citation statements)

References 58 publications

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“…A large number of hyperaccumulators in Viola species have been reported in Asian and European countries, for example, V. baoshanensis for the hyperaccumulation of cadmium (Liu et al, 2004;Tonin et al, 2001) and V. calaminaria (Tonin et al, 2001) and V. lutea (Sychta et al, 2018) for the hyperaccumulation of zinc. In their study on V. boashanensis in China, Wu et al (2010) mg kg -1 , and Zn concentration of 3428 mg kg -1 .…”

Section: Resultsmentioning

confidence: 99%

Accumulation of cadmium, copper and zinc in selected natural Viola taxa in Turkish Mediterranean serpentine soils

Aksoy

2021

Anatolian Journal of Botany

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Currently, 55 serpentine areas have been determined in Turkey. More than 60 Ni-accumulators and more than 43 serpentine-endemics are known from these areas. Within our field studies in the Mediterranean phytogeographic region, 8 Viola taxa distributed in serpentine areas and their respective soil samples were collected. Cd, Cu, and Zn concentrations of the soil and plant samples were investigated. After the plant and soil samples were digested in the microwave, metal measurements were made using a ICP-OES device. As a result of the Cd, Cu, and Zn measurements, none of the 8 Viola taxa collected from different localities were found to be hyperaccumulators. However, it was determined that Viola kizildaghensis has an accumulator feature in terms of Zn.

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Section: Resultsmentioning

confidence: 99%

Accumulation of cadmium, copper and zinc in selected natural Viola taxa in Turkish Mediterranean serpentine soils

Aksoy

2021

Anatolian Journal of Botany

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“…Despite the consecutive reporting of hyperaccumulators in Violaceae, progress in understanding the hypertolerance abilities of metallicolous plants in this class has been limited to metal mobilizing in cells at a physiological level [21], while transcriptome-level studies are rare. Here, we compared the transcriptomes of two Viola species, a tolerant hyperaccumulator V. baoshanensis and a non-tolerant accumulator V. inconspicua , from metalliferous and nonmetalliferous sites respectively.…”

Section: Discussionmentioning

confidence: 99%

“…A large number of hyperaccumulators in Violaceae have been reported in Asian and European countries, for example, V. baoshanensis for the hyperaccumulation of Cd [19,20], V. calaminaria [20] and V. lutea [21] for zinc (Zn), and Rinorea niccolifera [22] for nickel (Ni). Previous studies on the responses of Viola species to Cd stress were mostly limited to ecological and physiological levels, and only few studies were done at the transcriptional level, while comparative analyses with closely related non-metalliferous species are lacking.…”

Section: Introductionmentioning

confidence: 99%

Comparative Transcriptomic Studies on a Cadmium Hyperaccumulator Viola baoshanensis and Its Non-Tolerant Counterpart V. inconspicua

Shu

Zhang

Liu

et al. 2019

IJMS

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Many Viola plants growing in mining areas exhibit high levels of cadmium (Cd) tolerance and accumulation, and thus are ideal organisms for comparative studies on molecular mechanisms of Cd hyperaccumulation. However, transcriptomic studies of hyperaccumulative plants in Violaceae are rare. Viola baoshanensis is an amazing Cd hyperaccumulator in metalliferous areas of China, whereas its relative V. inconspicua is a non-tolerant accumulator that resides at non-metalliferous sites. Here, comparative studies by transcriptome sequencing were performed to investigate the key pathways that are potentially responsible for the differential levels of Cd tolerance between these two Viola species. A cascade of genes involved in the ubiquitin proteosome system (UPS) pathway were observed to have constitutively higher transcription levels and more activation in response to Cd exposure in V. baoshanensis, implying that the enhanced degradation of misfolded proteins may lead to high resistance against Cd in this hyperaccumulator. Many genes related to sucrose metabolism, especially those involved in callose and trehalose biosynthesis, are among the most differentially expressed genes between the two Viola species, suggesting a crucial role of sucrose metabolism not only in cell wall modification through carbon supply but also in the antioxidant system as signaling molecules or antioxidants. A comparison among transcriptional patterns of some known transporters revealed that several tonoplast transporters are up-regulated in V. baoshanensis under Cd stress, suggesting more efficient compartmentalization of Cd in the vacuoles. Taken together, our findings provide valuable insight into Cd hypertolerance in V. baoshanensis, and the corresponding molecular mechanisms will be useful for future genetic engineering in phytoremediation.

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“…Plants, in general, do not accumulate trace elements over their metabolic needs. Such settings are trivial in the range of 10 to 15 ppm of most trace elements suitable for most needs [59]. The exemptions are plants that are classified as "hyperaccumulator", which can absorb toxic metal ions at a concentration in the thousands of ppm.…”

Section: Mechanism Of Heavy Metals Uptake In Plantsmentioning

confidence: 99%

Understanding Potential Heavy Metal Contamination, Absorption, Translocation and Accumulation in Rice and Human Health Risks

Zakaria

Zulkafflee

Redzuan

et al. 2021

Plants

126

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Rice is a worldwide staple food and heavy metal contamination is often reported in rice production. Heavy metal can originate from natural sources or be present through anthropogenic contamination. Therefore, this review summarizes the current status of heavy metal contamination in paddy soil and plants, highlighting the mechanism of uptake, bioaccumulation, and health risk assessment. A scoping search employing Google Scholar, Science Direct, Research Gate, Scopus, and Wiley Online was carried out to build up the review using the following keywords: heavy metals, absorption, translocation, accumulation, uptake, biotransformation, rice, and human risk with no restrictions being placed on the year of study. Cadmium (Cd), arsenic (As), and lead (Pb) have been identified as the most prevalent metals in rice cultivation. Mining and irrigation activities are primary sources, but chemical fertilizer and pesticide usage also contribute to heavy metal contamination of paddy soil worldwide. Further to their adverse effect on the paddy ecosystem by reducing the soil fertility and grain yield, heavy metal contamination represents a risk to human health. An in-depth discussion is further offered on health risk assessments by quantitative measurement to identify potential risk towards heavy metal exposure via rice consumption, which consisted of in vitro digestion models through a vital ingestion portion of rice.

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Suspended cells of metallicolous and nonmetallicolous Viola species tolerate, accumulate and detoxify zinc and lead

Cited by 14 publications

References 58 publications

Accumulation of cadmium, copper and zinc in selected natural Viola taxa in Turkish Mediterranean serpentine soils

Accumulation of cadmium, copper and zinc in selected natural Viola taxa in Turkish Mediterranean serpentine soils

Comparative Transcriptomic Studies on a Cadmium Hyperaccumulator Viola baoshanensis and Its Non-Tolerant Counterpart V. inconspicua

Understanding Potential Heavy Metal Contamination, Absorption, Translocation and Accumulation in Rice and Human Health Risks

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