Responses of wheat seedlings to cadmium, mercury and trichlorobenzene stresses

Ge, Cailin; Ding, Yan; Wang, Zegang; Wan, Dingzhen; Wang, Yulong; Shang, Qi; Luo, Sulan

doi:10.1016/s1001-0742(08)62345-1

Cited by 36 publications

(18 citation statements)

References 35 publications

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“…As described above, the intensification of pectins and hemicellulose synthesis could be the effect of the NO signalization pathway in the cell (Xiong et al 2009). Moreover, recent studies concerning the response of leaves of wheat Yangmai 13 to Cd have shown that CW thickening could be due to the effect of ethylene production (Ge et al 2009). Ethylene plays an important defense role inducing the expression of various defensive genes in response to Cd stress (O'Donnell et al 1996).…”

Section: Cell Wall Thickeningsmentioning

confidence: 99%

“…In leaves of wheat Yangmai 13 exposed to Cd, ethylene production resulted in the induction of the UDP-glucose protein transglucosylase (UPTG) enzyme, which plays an important role in synthesizing CW components (Dhugga et al 1997). According to the authors, it leads to the stimulation of CW thickening formation and increases the CW capacity for Cd immobilization (Ge et al 2009). …”

Section: Cell Wall Thickeningsmentioning

confidence: 99%

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The cell wall in plant cell response to trace metals: polysaccharide remodeling and its role in defense strategy

2010

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This review paper is focused predominantly on the role of the cell wall in the defense response of plants to trace metals. It is generally known that this compartment accumulates toxic divalent and trivalent metal cations both during their uptake by the cell from the environment and at the final stage of their sequestration from the protoplast. However, from results obtained in recent years, our understanding of the role played by the cell wall in plant defense response to toxic metals has markedly altered. It has been shown that this compartment may function not only as a sink for toxic trace metal accumulation, but that it is also actively modified under trace metal stress. These modifications lead to an increase in the capacity of the cell wall to accumulate trace metals and a decrease of its permeability for trace metal migration into the protoplast. One of the most striking alterations is the enhancement of the level of low-methylesterified pectins: the polysaccharides able to bind divalent and trivalent metal ions. This review paper will present the most recent results, especially those that are concerned with polysaccharide level, composition and distribution under trace metal stress, and describe in detail the polysaccharides responsible for metal binding and immobilization in different groups of plants (algae and higher plants). The review also contains information related to the entry pathways of trace metals into the cell wall and their detection methods.

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Section: Cell Wall Thickeningsmentioning

confidence: 99%

Section: Cell Wall Thickeningsmentioning

confidence: 99%

The cell wall in plant cell response to trace metals: polysaccharide remodeling and its role in defense strategy

2010

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“…Kobalaminbağımsız metiyonin sentaz (MS) ise L-homosisteine bir metil grubunun transferini kataliz etmektedir (Pejchal and Ludwig 2005). Metal stresine maruz kalan birçok bitki türünde gerçekleştirilen proteomik çalışmalarda SAMS ve MS enzimlerinin miktarında artış belirlenmiştir (Farinati et al 2009;Ge et al 2009;Zhao et al 2011). Ayrıca, Cd stresi altındaki hücrelere uygulanan SAM'in koruyucu etkiye sahip olduğu gösterilmiştir (Noriega et al 2007).…”

Section: Kükürt Ve Glutatyon Metabolizması Ile İlişkili Proteinlerunclassified

“…Bu nedenle, V-ATPazın Cd detoksifikasyonunda fonksiyon görebildiği belirtilmiştir (Wang et al 2011). Birkaç proteomik çalışmada Cd ve Cr stresinin V-ATPaz proteininin sentezinde artışa neden olduğu bildirilmiştir (Ge et al 2009;Wang et al 2011;Sharmin et al 2012).…”

Section: Antioksidant Savunma Ve Detoksifikasyon Ile İlişkili Proteinlerunclassified

“…Uzama faktörleri (EF) translasyonel uzamayı sağlayan bir protein setidir. Kloroplast translasyonel EF-Tu ve EF-P proteinlerinin miktarının Cd stresi altındaki Arabidopsis thaliana ve çeltik bitkilerinde arttığı belirtilmiştir (Ge et al 2009;Lee et al 2010;Semane et al 2010;Cai et al 2011). Kloroplastik EF-Tu'nun bitkilerde sıcaklık toleransına katkıda bulunduğu ve sıcaklığa hassas kloroplast proteinlerini termal çökelmeden ve inaktivasyondan koruyan bir moleküler şaperon olarak işlev gördüğü bildirilmiştir (Ristic et al 2007).…”

Section: Protein Metabolizması Ile İlişkili Proteinlerunclassified

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Heavy Metal Toxicity in Plants: Proteomics Approach

Terzi¹,

Yıldız²

2013

AKU-J. Sci. Eng.

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ÖzetAğır metal kirliliği, insan sağlığını olumsuz etkileyen ve tarımsal verimde kayıplara neden olan önemli çevresel tehlikelerden biridir. Bitki hücresinin en önemli fonksiyonu, kendi savunması için ağır metal stresine karşı cevap vermektir. Ağır metal stresine cevap olarak fonksiyonel genler veya proteinlerin teşhisi stres cevaplarının moleküler mekanizmalarının anlaşılmasında önemli bir basamaktır. Protein ekspresyonu sadece transkripsiyonel seviyede değil, aynı zamanda translasyonel ve post-translasyonel seviyelerde de düzenlenmektedir. Bu nedenle, farklı stres koşulları altında bitki proteomundaki değişimleri araştırmak önemlidir. Genom tarafından eksprese olan proteinlerin geniş ölçekli analizi olarak tanımlanan proteomik, sadece proteomun tamamını tanımlamak için değil, aynı zamanda ağır metal stresi gibi farklı fizyolojik koşullar altındaki proteomların karşılaştırılması için güçlü bir moleküler araçtır. Bu derlemede, proteomik teknolojileri ve bitkilerde farklı metabolik olaylarda rolü olan ağır metal teşvikli proteinler tartışılmıştır. Heavy Metal Toxicity in Plants: Proteomics Approach Key wordsPlants; Heavy Metal; Toxicity; Proteomics; Mass Spectrometry AbstractHeavy metal contamination is one of the major environmental hazards, leading to losses in agricultural yields and harmfully affecting human health. The most crucial function of plant cell is to respond against heavy metal stress for self-defence. The identification of the functional genes or proteins that are involved in responses to heavy-metal stress is a fundamental step in understanding the molecular mechanisms of stress responses. Protein expression is regulated not only at the transcriptional level, but also at the translational and post-translational levels. Therefore, it is crucial to investigate the changes in plant proteome under different stress conditions. Proteomics, defined as the large-scale analysis of proteins expressed by the genome, is not only a powerful molecular tool for describing complete proteome, but also for comparative proteomes under different physiological conditions, such as heavy metal stress. In this review, proteomics technologies, and heavy metal induced proteins which play a role in different metabolic events in plants are discussed.

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Cellular and Molecular Phytotoxicity of Lead and Mercury

Roychoudhury

Chakraborty

2020

Cellular and Molecular Phytotoxicity of Heavy Metals

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Responses of wheat seedlings to cadmium, mercury and trichlorobenzene stresses

Cited by 36 publications

References 35 publications

The cell wall in plant cell response to trace metals: polysaccharide remodeling and its role in defense strategy

The cell wall in plant cell response to trace metals: polysaccharide remodeling and its role in defense strategy

Heavy Metal Toxicity in Plants: Proteomics Approach

Cellular and Molecular Phytotoxicity of Lead and Mercury

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