Transcriptional regulation and expression network responding to cadmium stress in a Cd-tolerant perennial grass Poa Pratensis

Xian, Jingping; Wang, Yong; Niu, Kuiju; Ma, Haiching; Ma, Xiaopeng

doi:10.1016/j.chemosphere.2020.126158

Cited by 44 publications

(18 citation statements)

References 61 publications

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“…This can be explained by the stress produced by an increased bioavailability of Cd due to the presence of MPs. However, some plants may develop adaptive and protective mechanisms against Cd stress, such as combining Cd with suberin, pectin, and other compounds in the cell wall location, or being sequestered in vacuoles, which may restrict Cd mobility and reduce its toxicity [39]. Furthermore, some hormones in the plant, such as auxin, ethylene, or brassinosteroids, can form signal transduction cascades, which may contribute to an increase in the plant's Cd tolerance [40].…”

Section: Plant Growth and Yieldmentioning

confidence: 99%

Combined Effect of Microplastics and Cd Alters the Enzymatic Activity of Soil and the Productivity of Strawberry Plants

Pinto-Poblete

Retamal-Salgado

López

et al. 2022

Plants

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The synergistic effect between heavy metals and microplastics can affect soil properties as well as plant performance and yield. The objective of this study was to evaluate the combined effect of microplastics and cadmium on a soil–plant system. Specifically, we proposed to explore changes in soil microbiological activity, the growth and yield parameters of strawberry plants, and to evaluate the accumulation of these pollutants in the soil and root system. Plants were planted in clay pots under greenhouse conditions. The experiment was set up as a completely randomized design, with four treatments (Control; MPs; Cd; and Cd + MPs) and five replicates. The results showed that MPs and/or Cd affected plant growth, plant biomass, the number of fruits, root characteristics, dehydrogenase activity, acid phosphatase, and microbial biomass, and increased the accumulation of Cd in the roots and soil. The increased bioavailability of Cd, due to the presence of microplastics, could explain the observed negative effects on soil properties and the performance of strawberry plants.

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Section: Plant Growth and Yieldmentioning

confidence: 99%

Combined Effect of Microplastics and Cd Alters the Enzymatic Activity of Soil and the Productivity of Strawberry Plants

Pinto-Poblete

Retamal-Salgado

López

et al. 2022

Plants

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“…Each group included 6 pots of seedlings. The treatment method was based on our previous study [27]. Hoagland's nutrient solution containing 1000 µM Cd was applied to the pots of the treatment groups until the soil was saturated, while the control groups were watered with standard Hoagland's nutrient solution [27].…”

Section: Seedling Cultivation and CD Treatmentmentioning

confidence: 99%

“…Thus, it represents a potential phytoremediation material for Cd-contaminated soil. In our previous study, we identified a Cd-tolerant genotype 'Midnight' (M) and Cd-sensitive genotype 'Rugby' (R), and we used RNA sequencing technology to elucidate the molecular mechanisms through which these genotypes respond to 1000 µM Cd stress over 24 h [27]. The results showed that a large number of differentially expressed genes (DEGs) were involved in lignin biosynthesis and carbohydrate transport and metabolism [27].…”

Section: Introductionmentioning

confidence: 99%

“…In our previous study, we identified a Cd-tolerant genotype 'Midnight' (M) and Cd-sensitive genotype 'Rugby' (R), and we used RNA sequencing technology to elucidate the molecular mechanisms through which these genotypes respond to 1000 µM Cd stress over 24 h [27]. The results showed that a large number of differentially expressed genes (DEGs) were involved in lignin biosynthesis and carbohydrate transport and metabolism [27]. However, the long-term impacts of Cd stress on cell wall components and carbohydrate content in the leaves and roots of Kentucky bluegrass remain unclear.…”

Section: Introductionmentioning

confidence: 99%

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Comparison and Characterization of Oxidation Resistance and Carbohydrate Content in Cd-Tolerant and -Sensitive Kentucky Bluegrass under Cd Stress

et al. 2021

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Kentucky bluegrass (Poa pratensis L.), a turf grass species that is hypertolerant of cadmium (Cd), is a potential phytoremediation material for soil polluted with Cd. However, the mechanism of Cd phytotoxicity in Kentucky bluegrass is unclear. Here, we compared the phenotype, induction of oxidative stress, and structural and non-structural carbohydrate contents between a Cd-tolerant genotype (‘Midnight’, M) and Cd-sensitive genotype (‘Rugby’, R). The results showed that both genotypes accumulated more Cd in the roots, whereas the R genotype distributed more Cd into the leaves compared with the M genotype. In both genotypes, Cd inhibited the length and fresh weight of the leaves and roots; increased the peroxidase (POD) activity but inhibited ascorbate peroxidase (APX) and catalase (CAT) activity; and increased the superoxide radical (O2−), hydrogen peroxide (H2O2), and malondialdehyde (MDA) contents. However, the M genotype exhibited lower root length inhibition, and the H2O2 and MDA contents confirmed that the M genotype had increased Cd accumulation and resistance, while the R genotype exhibited a better distribution of Cd. Moreover, Cd stress significantly increased the soluble sugar, trehalose, and sucrose contents of both genotypes. Pectin, lignin, and cellulose were significantly increased to prevent the entry of Cd into the roots. The Cd-induced growth inhibition and physiological responses in Kentucky bluegrass were preliminarily explored herein, with the chelation of pectin, lignification, and antioxidant response being possible contributors to Cd detoxification in Kentucky bluegrass. In addition, the Cd-induced increase in trehalose, sucrose, and soluble sugar contents might play a pivotal role in the defense against Cd stress in Kentucky bluegrass.

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“…K01990 (ABC-2 type transport system ATP-binding protein), K01992 (ABC-2 type transport system permease protein), and K02004 (putative ABC transport system permease protein) are members of the ABC transporter family, which not only participate in the transport of plant hormones, ions, and secondary metabolites, but also facilitate an increase in resistance [24], and play important roles in maintaining cell stability. K00059 (3-oxoacyl-[acyl-carrier protein] reductase) can participate in lipid metabolic processes and is closely related to the biosynthesis of fatty acids and unsaturated fatty acids [25].…”

Section: Functional Prediction Of Rhizosphere Bacteriamentioning

confidence: 99%

Soil Type Influences Rhizosphere Bacterial Community Assemblies of Pecan Plantations, a Case Study of Eastern China

Tang

Liu

Bao

et al. 2022

Forests

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The rhizosphere microbiome is closely related to forest health and productivity. However, whether soil type affects pecan (Carya illinoinensis) rhizosphere microbiomes is unclear. We aimed to explore the diversity and structural characteristics of rhizosphere bacteria associated with pecan plantations grown in three soil types (Luvisols, Cambisols, Solonchaks) in Eastern China and analyze their potential functions through high-throughput sequencing. The results showed that the diversity and community structure of rhizosphere bacteria in pecan plantations were significantly affected by soil type and the pH, available phosphorus content, electrical conductivity, soil moisture, and ammonium nitrogen contents were the main factors. At the phylum level, the rhizosphere bacterial community composition was consistent, mainly included Actinobacteria, Proteobacteria, Acidobacteria, and Chloroflexi. At the family level, the pecan plantations formed different rhizosphere enriched biomarkers due to the influence of soil type, with functional characteristics such as plant growth promotion and soil nutrient cycling. In addition, there existed low abundance core species such as Haliangiaceae, Bryobacteraceae, and Steroidobacteraceae. They played important roles in the rhizosphere environments through their functional characteristics and community linkages. Overall, this study provides a basis for the study of the rhizosphere microbiome in different soil types of pecan plantations, and plays an important role in the sustainable management of forest soil.

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Transcriptional regulation and expression network responding to cadmium stress in a Cd-tolerant perennial grass Poa Pratensis

Cited by 44 publications

References 61 publications

Combined Effect of Microplastics and Cd Alters the Enzymatic Activity of Soil and the Productivity of Strawberry Plants

Combined Effect of Microplastics and Cd Alters the Enzymatic Activity of Soil and the Productivity of Strawberry Plants

Comparison and Characterization of Oxidation Resistance and Carbohydrate Content in Cd-Tolerant and -Sensitive Kentucky Bluegrass under Cd Stress

Soil Type Influences Rhizosphere Bacterial Community Assemblies of Pecan Plantations, a Case Study of Eastern China

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