Proteins in Xylem Exudates from Rapeseed Plants (<i>Brassica napus</i> L.) Play a Crucial Role in Cadmium Phytoremediation

Jien, Shih‐Hao; Lin, Yong‐Hong

doi:10.1002/clen.201700164

Cited by 8 publications

(2 citation statements)

References 47 publications

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“…Proteomic analysis of xylem tissue of Cd-treated rapeseed plant revealed the proteins related to energy production, carbohydrate metabolism, and redox reduction [267]. Cd stress caused a reduction in growth and photosynthesis when Populus.…”

Section: Proteomicsmentioning

confidence: 99%

Phytoremediation of Cadmium: Physiological, Biochemical, and Molecular Mechanisms

Raza

Habib

Najafi-Kakavand

et al. 2020

Biology

185

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Cadmium (Cd) is one of the most toxic metals in the environment, and has noxious effects on plant growth and production. Cd-accumulating plants showed reduced growth and productivity. Therefore, remediation of this non-essential and toxic pollutant is a prerequisite. Plant-based phytoremediation methodology is considered as one a secure, environmentally friendly, and cost-effective approach for toxic metal remediation. Phytoremediating plants transport and accumulate Cd inside their roots, shoots, leaves, and vacuoles. Phytoremediation of Cd-contaminated sites through hyperaccumulator plants proves a ground-breaking and profitable choice to combat the contaminants. Moreover, the efficiency of Cd phytoremediation and Cd bioavailability can be improved by using plant growth-promoting bacteria (PGPB). Emerging modern molecular technologies have augmented our insight into the metabolic processes involved in Cd tolerance in regular cultivated crops and hyperaccumulator plants. Plants’ development via genetic engineering tools, like enhanced metal uptake, metal transport, Cd accumulation, and the overall Cd tolerance, unlocks new directions for phytoremediation. In this review, we outline the physiological, biochemical, and molecular mechanisms involved in Cd phytoremediation. Further, a focus on the potential of omics and genetic engineering strategies has been documented for the efficient remediation of a Cd-contaminated environment.

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Section: Proteomicsmentioning

confidence: 99%

Phytoremediation of Cadmium: Physiological, Biochemical, and Molecular Mechanisms

Raza

Habib

Najafi-Kakavand

et al. 2020

Biology

185

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show abstract

“…The variation in amino acid concentrations in the root exudates of the two tobacco lines may be due to differences in Cd uptake and accumulation. Amino acids can chelate with Cd ions, thus reducing the migration of Cd to plants and its toxic actions [ 37 ]. Lys and His secreted by plant roots play a key role in chelating, activating, and absorbing heavy metals [ 38 , 39 ].…”

Section: Discussionmentioning

confidence: 99%

Role of Root Exudates in Cadmium Accumulation of a Low-Cadmium-Accumulating Tobacco Line (Nicotiana tabacum L.)

Huang

Zhan

et al. 2023

Toxics

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Root exudates are tightly linked with cadmium (Cd) uptake by the root and thus affect plant Cd accumulation. A hydroponic experiment was carried out to explore the role of root exudates in Cd accumulation of a low-Cd-accumulating tobacco line (RG11) compared with a high-Cd- accumulating tobacco line (Yuyan5). Greater secretion of organic acids and amino acids by the roots was induced by an exogenous Cd addition in the two tobacco lines. The concentration of organic acid secreted by RG11 was only 51.1~61.0% of that secreted by Yuyan5. RG11 roots secreted more oxalic acid and acetic acid and less tartaric acid, formic acid, malic acid, lactic acid, and succinic acid than Yuyan5 under Cd stress. Oxalic acid accounted for 26.8~28.8% of the total organic acids, being the most common component among the detected organic acids, and was significantly negatively correlated with Cd accumulation in RG11. Propionic acid was only detected in the root exudates of RG11 under Cd stress. Lactic acid was positively linked with Cd accumulation in Yuyan5, being less accumulated in RG11. Similarly, RG11 secreted more amino acids than Yuyan5 under Cd stress. Aspartic acid, serine, and cysteine appeared in RG11 when it was exposed to Cd. Lysine was the most secreted amino acid in RG11 under Cd stress. RG11 roots secreted less lysine, histidine, and valine, but more phenylalanine and methionine than Yuyan5 under Cd stress. The results show that organic acids and amino acids in root exudates play a key role in Cd uptake by the root, and this contribution varied with cultivar/genotype. However, further research is still needed to explore the mechanisms underlying low Cd translocation to the leaf, which may be the key contribution of low Cd accumulation in RG11 to the security of tobacco leaf.

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Effects of root exudates on the activation and remediation of cadmium ion in contaminated soils

Chen

et al. 2019

Environ Sci Pollut Res

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Proteins in Xylem Exudates from Rapeseed Plants (Brassica napus L.) Play a Crucial Role in Cadmium Phytoremediation

Cited by 8 publications

References 47 publications

Phytoremediation of Cadmium: Physiological, Biochemical, and Molecular Mechanisms

Phytoremediation of Cadmium: Physiological, Biochemical, and Molecular Mechanisms

Role of Root Exudates in Cadmium Accumulation of a Low-Cadmium-Accumulating Tobacco Line (Nicotiana tabacum L.)

Effects of root exudates on the activation and remediation of cadmium ion in contaminated soils

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