Histidine promotes the loading of nickel and zinc, but not of cadmium, into the xylem in<i>Noccaea caerulescens</i>

Кожевникова, А. Д.; Серегин, И. В.; Verweij, Rudo A.

doi:10.4161/psb.29580

Cited by 14 publications

(3 citation statements)

References 29 publications

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“…Its expression is raised in response to heavy metal stress implying a role in detoxification. Further metal binding compounds include amino acids like histidine and the amine nicotianamine which appear particularly important for xylem mediated translocation of metals like Ni and Zn (Kozhevnikova et al, 2014; Kozhevnikova et al, 2014). For example, defects in root cell nicotianamine synthesis were shown to have a negative effect on the translocation of Zn from roots to shoots (Clemens, 2019).…”

Section: Metal Toxicity; Similarities In Mechanisms and Responsesmentioning

confidence: 99%

The role of roots and rhizosphere in providing tolerance to toxic metals and metalloids

Podar

Maathuis

2021

Plant Cell & Environment

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Human activity and natural processes have led to the widespread dissemination of metals and metalloids, many of which are toxic and have a negative impact on plant growth and development. Roots, as the first point of contact, are essential in endowing plants with tolerance to excess metal(loid) in the soil. The most important root processes that contribute to tolerance are: adaptation of transport processes that affect uptake efflux and long‐distance transport of metal(loid)s; metal(loid) detoxification within root cells via conjugation to thiol rich compounds and subsequent sequestration in the vacuole; plasticity in root architecture; the presence of bacteria and fungi in the rhizosphere that impact on metal(loid) bioavailability; the role of root exudates. In this review, we provide details on these processes and assess their relevance on the detoxification of arsenic, cadmium, mercury and zinc in crops. Furthermore, we assess which of these strategies have been tested in field conditions and whether they are effective in terms of improving crop metal(loid) tolerance.

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Section: Metal Toxicity; Similarities In Mechanisms and Responsesmentioning

confidence: 99%

The role of roots and rhizosphere in providing tolerance to toxic metals and metalloids

Podar

Maathuis

2021

Plant Cell & Environment

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“…Its expression is raised in response to heavy metal stress. Lastly, amino acids like histidine can bind metals and appear particularly important for xylem mediated translocation of metals like Ni and Zn (Kozhevnikova et al, 2014a, Kozhevnikova et al, 2014b.…”

Section: Metal Toxicity; Similarities In Mechanisms and Responsesmentioning

confidence: 99%

The role of roots and rhizosphere in providing tolerance to toxic metals and metalloids

Podar

Maathuis

2021

Preprint

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Human activity and natural processes have led to widespread dissemination of metals and metalloids, many of which are toxic and have a negative impact on agronomic production. Roots, as the first point of contact, are essential in endowing plants with tolerance to excess metal(loid) in the soil. The most important root responses include: adaptation of transport processes that affect uptake, efflux and long distance transport of metal(loid)s; metal(loid) detoxification within root cells via conjugation to thiol rich compounds and subsequent sequestration in the vacuole; plasticity in root architecture; the presence of bacteria and fungi in the rhizosphere that impact on metal(loid) bioavailability; the role of root exudates. In this review we will provide details on these processes and assess their relevance for the detoxification of arsenic, cadmium, mercury and zinc. Furthermore, we will assess if any of these methodologies has been tested in field conditions and whether they are effective in terms of improving crop metal(loid) tolerance.

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“…Amino acids have higher stability constants for Ni than do carboxylates (Homer et al, 1991), and thus offer better transport of this metal within the plant. Among the potential non-protein metal chelators, the amino acid histidine (His) has been suggested to be implicated in plant-internal transport of Ni in hyperaccumulator and non-hyperaccumulator plants (Kerkeb and Kramer, 2003;Richau et al, 2009;Kozhevnikova et al, 2014). In some hyperaccumulator plants, however, transport of Ni in the xylem sap is mainly as free hydrated cation and histidine has no significant role in xylem sap chelation of Ni during root-to-shoot transport (Tiffin, 1972;Alves et al, 2011;Centofanti et al, 2013).…”

Section: Introductionmentioning

confidence: 98%

Root uptake and translocation of nickel in wheat as affected by histidine

Dalir

Khoshgoftarmanesh

2015

Journal of Plant Physiology

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Histidine promotes the loading of nickel and zinc, but not of cadmium, into the xylem inNoccaea caerulescens

Cited by 14 publications

References 29 publications

The role of roots and rhizosphere in providing tolerance to toxic metals and metalloids

The role of roots and rhizosphere in providing tolerance to toxic metals and metalloids

The role of roots and rhizosphere in providing tolerance to toxic metals and metalloids

Root uptake and translocation of nickel in wheat as affected by histidine

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