Malate secretion from the root system is an important reason for higher resistance of <i>Miscanthus sacchariflorus</i> to cadmium

Guo, Haipeng; Xue, Feng; Hong, Chuntao; Chen, Houming; Zeng, Fanrong; Zheng, Bingsong; Jiang, Dongxiang

doi:10.1111/ppl.12526

Cited by 29 publications

(14 citation statements)

References 56 publications

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“…Of two species of grass from the genus Miscanthus under Cd stress, less accumulation of Cd in roots and shoots and more intense exudation of malate from roots were shown for the more Cd-tolerant Miscanthus sacchariflorus than for the less stable Miscanthus floridulus (Guo et al, 2017). Inhibition of the anion channel was accompanied by the blocking of malate secretion and an increase in Cd influx in M. sacchariflorus plants.…”

Section: Plant Sciencementioning

confidence: 90%

The role of organic acids in heavy metal tolerance in plants

Osmolovskaya¹,

Dung

Kuchaeva³

2018

BioComm

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Organic acid metabolism is of fundamental importance at the cellular and at the whole plant level. In recent years there has been increased attention in the role of organic acids in modulating adaptation to the environment, including organic acids participation in the detoxification of heavy metals. The basis of the phenomenon is the ability of acids such as citrate, malate, oxalate, malonate, aconitate and tartrate to form strong bonds with heavy metal ions through metal chelatation with carboxyl groups carrying the function of donor oxygen in metal-ligands. This review deals with aspects of extracellular and intracellular chelation of heavy metal ions with the involvement of organic acids. We consider the role of metal-induced secretion of malate, citrate and oxalate by roots of various plant species in extracellular complexation of heavy metals and in the reduction of their bioavailability for plants. We also review the possible mechanisms of stimulation of metals uptake by plants under the influence of exogenous application of organic acids in the soil. The efficiency of intracellular chelation of heavy metal ions with the participation of organic acids is considered due to the importance of this strategy in hyperaccumulators and non-hyperaccumulators to improve metal tolerance in plants.

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Section: Plant Sciencementioning

confidence: 90%

The role of organic acids in heavy metal tolerance in plants

Osmolovskaya¹,

Dung

Kuchaeva³

2018

BioComm

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“…Excluders are able to secrete into the soil organic acids (like citrate, malate, or oxylate) as well as amino acids (like histidine) that chelate metallic ions and transform them into insoluble forms. The restricted metals uptake by root exudates was observed in different species, among others Thlaspi arvense [136], Ricinus communis [137], or Miscanthus sacchariflorus [138] that were treated with Ni, Cu, and Cd ions, respectively. An analogous role is performed by phytosiderophores that are produced by roots of monocot plants to limit the acquisition of Fe ions under their excess amount, as observed e.g., in Triticum aestivum [38].…”

Section: Metallophytes As Unique Communities From Metalliferous Sitesmentioning

confidence: 99%

Dual Role of Metallic Trace Elements in Stress Biology—From Negative to Beneficial Impact on Plants

Muszyńska

Labudda

2019

IJMS

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Heavy metals are an interesting group of trace elements (TEs). Some of them are minutely required for normal plant growth and development, while others have unknown biological actions. They may cause injury when they are applied in an elevated concentration, regardless of the importance for the plant functioning. On the other hand, their application may help to alleviate various abiotic stresses. In this review, both the deleterious and beneficial effects of metallic trace elements from their uptake by roots and leaves, through toxicity, up to the regulation of physiological and molecular mechanisms that are associated with plant protection against stress conditions have been briefly discussed. We have highlighted the involvement of metallic ions in mitigating oxidative stress by the activation of various antioxidant enzymes and emphasized the phenomenon of low-dose stimulation that is caused by non-essential, potentially poisonous elements called hormesis, which is recently one of the most studied issues. Finally, we have described the evolutionary consequences of long-term exposure to metallic elements, resulting in the development of unique assemblages of vegetation, classified as metallophytes, which constitute excellent model systems for research on metal accumulation and tolerance. Taken together, the paper can provide a novel insight into the toxicity concept, since both dose- and genotype-dependent response to the presence of metallic trace elements has been comprehensively explained.

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“…Plants face a plethora of biotic and abiotic stresses during their entire life which have negative impact on their growth, development, and productivity [1,2,3]. Biotic factors include insect pests, fungi, and weeds whereas abiotic stresses include salinity, drought, heavy metals, pesticides, ultraviolet (UV) radiation, as well as heat and cold stress [3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18]. The amplitude of these abiotic stresses has increased severely in recent years principally due to anthropogenic activities [7,19].…”

Section: Introductionmentioning

confidence: 99%

Response of Phenylpropanoid Pathway and the Role of Polyphenols in Plants under Abiotic Stress

et al. 2019

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Phenolic compounds are an important class of plant secondary metabolites which play crucial physiological roles throughout the plant life cycle. Phenolics are produced under optimal and suboptimal conditions in plants and play key roles in developmental processes like cell division, hormonal regulation, photosynthetic activity, nutrient mineralization, and reproduction. Plants exhibit increased synthesis of polyphenols such as phenolic acids and flavonoids under abiotic stress conditions, which help the plant to cope with environmental constraints. Phenylpropanoid biosynthetic pathway is activated under abiotic stress conditions (drought, heavy metal, salinity, high/low temperature, and ultraviolet radiations) resulting in accumulation of various phenolic compounds which, among other roles, have the potential to scavenge harmful reactive oxygen species. Deepening the research focuses on the phenolic responses to abiotic stress is of great interest for the scientific community. In the present article, we discuss the biochemical and molecular mechanisms related to the activation of phenylpropanoid metabolism and we describe phenolic-mediated stress tolerance in plants. An attempt has been made to provide updated and brand-new information about the response of phenolics under a challenging environment.

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Malate secretion from the root system is an important reason for higher resistance of Miscanthus sacchariflorus to cadmium

Cited by 29 publications

References 56 publications

The role of organic acids in heavy metal tolerance in plants

The role of organic acids in heavy metal tolerance in plants

Dual Role of Metallic Trace Elements in Stress Biology—From Negative to Beneficial Impact on Plants

Response of Phenylpropanoid Pathway and the Role of Polyphenols in Plants under Abiotic Stress

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