Transcriptome -wide modulation combined with morpho-physiological analyses of Typha orientalis roots in response to lead challenge

Xu, Xiaoying; Chen, Qi; Mo, Shuangrong; Qian, Ying; Wu, Xiaoxia; Jin, Y. G.; Ding, Haidong

doi:10.1016/j.jhazmat.2019.121405

Cited by 21 publications

(8 citation statements)

References 72 publications

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“…Peroxidase catalyzes the oxidation of phenylpropanoids to phenoxy, and the subsequent nonenzymatic coupling controls the pattern and extent of polymerization 47 . Under lead stress, phenylpropanoid biosynthesis is most significantly enriched in T. orientalis and the expression of DEGs such as PAL , C4H , 4CL and CCoAOM is up-regulated 48 . Bacillus altitudinis WR10 regulates the phenylpropanoid biosynthesis related genes, which may improve phenolic acids accumulation, thus protecting plant cells from copper toxicity 49 .…”

Section: Discussionmentioning

confidence: 99%

Exogenous Brassinosteroid Enhances Zinc tolerance by activating the Phenylpropanoid Biosynthesis pathway in Citrullus lanatus L

Liu

Zhu

et al. 2023

Plant Signaling & Behavior

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Zinc (Zn) is an important element in plants, but over-accumulation of Zn is harmful. The phytohormone brassinosteroids (BRs) play a key role in regulating plant growth, development, and response to stress. However, the role of BRs in watermelon ( Citrullus lanatus L.) under Zn stress, one of the most important horticultural crops, remains largely unknown. In this study, we revealed that 24-epibrassinolide (EBR), a bioactive BR enhanced Zn tolerance in watermelon plants, which was related to the EBR-induced increase in the fresh weight, chlorophyll content, and net photosynthetic rate (Pn) and decrease in the content of hydrogen peroxide (H 2 O 2 ), malondialdehyde (MDA), and Zn in watermelon leaves. Through RNA deep sequencing (RNA-seq), 350 different expressed genes (DEG) were found to be involved in the response to Zn stress after EBR treatment, including 175 up-regulated DEGs and 175 down-regulated DEGs. The up-regulated DEGs were significantly enriched in ‘phenylpropanoid biosynthesis’ pathway (map00940) using KEGG enrichment analysis. The gene expression levels of PAL , 4CL , CCR , and CCoAOMT , key genes involved in phenylpropanoid pathway, were significantly induced after EBR treatment. In addition, compared with Zn stress alone, EBR treatment significantly promoted the activities of PAL, 4CL, and POD by 30.90%, 20.69%, and 47.28%, respectively, and increased the content of total phenolic compounds, total flavonoids, and lignin by 23.02%, 40.37%, and 29.26%, respectively. The present research indicates that EBR plays an active role in strengthening Zn tolerance, thus providing new insights into the mechanism of BRs enhancing heavy metal tolerance.

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Section: Discussionmentioning

confidence: 99%

Exogenous Brassinosteroid Enhances Zinc tolerance by activating the Phenylpropanoid Biosynthesis pathway in Citrullus lanatus L

Liu

Zhu

et al. 2023

Plant Signaling & Behavior

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“…In the present study, the Pb concentration in all parts of A. bettzickiana increased with increasing concentration of applied Pb in soil. The larger uptake of Pb in roots compared to leaves and stems was due to the direct exposure of roots to Pb in soil [ 34 ]. Our findings agree with those of Tauqeer et al [ 15 ] and Kanwal et al [ 14 ], who confirmed the phytoextraction potential of A. bettzickiana for Pb and Cd, respectively.…”

Section: Discussionmentioning

confidence: 99%

“…Similar to other plants such as B. napus , L. minor, and Typha latifolia , [ 24 , 26 ], A. bettzickiana accumulated Pb from media [ 15 ]. Conversely, a few plant species such as T. orientali restricted the accumulation of Pb in roots [ 34 ]. Addition of AA under Pb stress significantly increased the uptake of Pb and its accumulation in leaves, stems, and roots, similar to the findings reported by Bjelkova et al [ 36 ] and Ji et al [ 31 ].…”

Section: Discussionmentioning

confidence: 99%

Physiological and Biochemical Response of Alternanthera bettzickiana (Regel) G. Nicholson under Acetic Acid Assisted Phytoextraction of Lead

Latif

Farid

Rizwan

et al. 2020

Plants

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Heavy metals (HMs) stress causes severe damage to physiology and biochemistry of plant species leading to stunted growth and low yield. Phytoremediation via phytoextraction, a viable low-cost and environment-friendly alternative to other techniques that are often too expensive, impractical and hazardous. However, phytoextraction potential, physiological and biochemical response of various plant species against HMs stress is not fully understood. Among other HMs, lead (Pb) is an inorganic pollutant with deleterious biotic effects. Bioavailability and mobility of the Pb can be enhanced by addition of organic acids. A pot scale experiment was done to assess the effects of Pb on Alternanthera bettzickiana (Regel) G. Nicholson and its ability to accumulate Pb with or without acetic acid (AA). The Results showed that Pb caused significant damage in A. bettzickiana, and its ecotoxicity was evident from increased levels of lipid peroxidation up to 107% under Pb stress. The significant decrease in plant height (32%), root length (21%), leaf area (38%) and number of leaves per plant (46%) was observed. On the other hand, application of AA to Pb stressed plants reduced the oxidative damage by further enhancing the activities of ascorbate peroxidase (APX) and catalases (CAT) up to 16% and 21% respectively. Moreover, addition of AA significantly improved plant total chlorophylls (15%) and carotenoids (50%). The application of AA also promoted Pb accumulation in leaf, stem and roots up to 70%, 65% and 66% respectively. This research concluded that AA has the ability to enhance the phytoextraction of Pb and support the plant growth and physiology under Pb stress condition.

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“…ABCs often play important roles in transferring heavy metals [45][46][47]. The most numerous subtype transporter of the ABC transporter family is ABCGs, with the most complex function in a plant's response to abiotic stresses [43,59]. Previous studies have shown that ABCGs play key roles in plant Pb tolerance [28,45,59,60], and MaABCG16 and MaABCG19 were upregulated by Pb and AM fungi (data unpublished).…”

Section: Relative Expressions Of Related Genesmentioning

confidence: 98%

Pb Transfer Preference of Arbuscular Mycorrhizal Fungus Rhizophagus irregularis in Morus alba under Different Light Intensities

Ren

Zhang

Jin

et al. 2022

JoF

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Arbuscular mycorrhizal (AM) fungi can improve the lead (Pb) tolerance of host plants and accumulate intensive Pb in mycorrhizal roots. However, the detailed contribution of AM fungal extraradical hyphae to the plants’ Pb uptake remains unknown. In this study, mulberry (Morus alba) colonized by the AM fungus (Rhizophagus irregularis) with light treatments were linked by fungal extraradical hyphae using a three-compartment system (pot test), and their differences in responding to Pb application were compared. Shading inhibited mulberry photosynthesis and the growth of mulberry. In this study, Pb application did not affect the colonization of R. irregularis when symbiosis had already formed as the root was not exposed to Pb during the colonization and formation of the AM fungal hyphae network. The R. irregularis preferred to transfer more Pb to the unshaded mulberry than to the shaded mulberry, a condition capable of providing more C supply for fungal survival than to low-light mulberry. The Pb transferred through the mycorrhizal pathway to mulberry had low mobility and might be compartmented in the root by R. irregularis until exceeding a threshold. The relatively high expressions of MaABCG16 with high Pb concentrations in plants suggest that MaABCG16 might play an important role in Pb translocation.

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Transcriptome -wide modulation combined with morpho-physiological analyses of Typha orientalis roots in response to lead challenge

Cited by 21 publications

References 72 publications

Exogenous Brassinosteroid Enhances Zinc tolerance by activating the Phenylpropanoid Biosynthesis pathway in Citrullus lanatus L

Exogenous Brassinosteroid Enhances Zinc tolerance by activating the Phenylpropanoid Biosynthesis pathway in Citrullus lanatus L

Physiological and Biochemical Response of Alternanthera bettzickiana (Regel) G. Nicholson under Acetic Acid Assisted Phytoextraction of Lead

Pb Transfer Preference of Arbuscular Mycorrhizal Fungus Rhizophagus irregularis in Morus alba under Different Light Intensities

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