Involvement of ethylene and lipid signalling in cadmium-induced programmed cell death in tomato suspension cells

Yakimova, Elena; Kapchina-Toteva, Veneta; Laarhoven, Lucas J. J.; Harren, F.J.M.; Woltering, E.J.

doi:10.1016/j.plaphy.2006.09.003

Cited by 82 publications

(70 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Bitkilerde SAM, 1-aminosiklopropan-1-karboksilik asit (ACC) ve ACC'de etilen biyosentezi için substrattır. SAM sentetaz ve ACC'den etilen biyosentezinde rol alan ACC oksidaz enzimlerinin ağır metallerce teşvik edilmesiyle etilen üretiminin arttığı ve dolayısıyla bu artışın ağır metal teşvikli hücre ölümü ile ilişkili olduğu ileri sürülmüştür (Yakimova et al 2006). Bununla birlikte, Cr(VI) stresinin SAM sentetaz miktarını azaltarak SAM ve ACC biyosentezini azalttığı ve bu nedenle azalan etilen sentezinin Cr(VI) teşvikli senesensi geciktirdiği bildirilmiştir (Sharmin et al 2012).…”

Section: Sinyal İletim Mekanizması Ve Sekonder Metabolizma Ile İlişkiunclassified

Heavy Metal Toxicity in Plants: Proteomics Approach

Terzi¹,

Yıldız²

2013

AKU-J. Sci. Eng.

View full text Add to dashboard Cite

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.

show abstract

Section: Sinyal İletim Mekanizması Ve Sekonder Metabolizma Ile İlişkiunclassified

Heavy Metal Toxicity in Plants: Proteomics Approach

Terzi¹,

Yıldız²

2013

AKU-J. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…1). Activation of phospholipases-C and D and the production of second messengers phosphatidic acid and calcium are involved in this type of cell death (Yakimova et al, 2006). Although ethylene alone does not induce cell death in these systems, it seems an important stimulator of the process as blocking ethylene production or perception usually greatly diminishes the effect of the chemical and physical cell death inducers.…”

Section: Pcd In Cultured Plant Cellsmentioning

confidence: 99%

Programmed Cell Death and Postharvest Deterioration of Horticultural Produce

Woltering¹,

Iakimova²

2010

Acta Hortic.

Self Cite

View full text Add to dashboard Cite

Programmed cell death (PCD) is a process where cells or tissues are broken down in an orderly and predictable manner, whereby nutrients are re-used by other cells, tissues or plant parts. The process of (petal) senescence shows many similarities to autophagic PCD in animal cells including a massive breakdown of protein, DNA and RNA, the formation of autophagic vacuoles for the breakdown of cytoplasm and organelles therein and, the eventual rupture of these vacuoles that kills the cell. Common storage disorders such as scald, internal browning, core breakdown and senescent breakdown in fruit and formation of a variety of storagerelated problems in vegetables that are induced by severe conditions such as low temperature, low oxygen and increased carbon dioxide concentrations, are accompanied by death and sometimes disappearance of cells. This type of cell death shows similarities to autophagic cell death during aerenchyma formation in flooded roots. This paper discusses different types of cell death in relation to flower petal senescence and storage disorders in fruit and vegetables.

show abstract

“…In contrast to auxin flow inhibition, ethylene production was stimulated by Cd treatment in suspended carrot cell cultures [20]. With suspended tomato cells, ethylene signalling was involved in the Cd-induced programmed cell death [21]. In addition, enhanced generation of ethylene has been reported in both roots and leaves after cadmium treatment in wheat and barley seedlings [22,23].…”

Section: Introductionmentioning

confidence: 97%

How cobalt facilitates cadmium- and ethylene precursor-induced growth inhibition and radial cell expansion in barley root tips

et al. 2012

View full text Add to dashboard Cite

Significant root growth inhibition was observed during the very short 5 minute exposure time of barley roots to the low 10 μM concentration of cadmium. In addition to the cadmium-induced root growth inhibition, considerable radial expansion of roots was observed as a characteristic symptom of transient short-term exposure of roots to cadmium. The cadmium-induced radial expansion of roots was observed mainly the cortical cells of elongation zone that were twice as large as in control roots. Similarly as in cadmium-treated roots, short-term treatment with ACC significantly inhibited root growth and caused a marked radial expansion of cortical cells. The ethylene synthesis inhibitor cobalt significantly alleviated both the cadmium- and ethylene precursor-induced root growth inhibition and radial root expansion. The results indicate that ethylene probably plays a crucial role in the short-term cadmium-induced inhibition of root growth and radial cell expansion of barley root tips, which are the very early symptoms of cadmium toxicity.

show abstract

Involvement of ethylene and lipid signalling in cadmium-induced programmed cell death in tomato suspension cells

Cited by 82 publications

References 54 publications

Heavy Metal Toxicity in Plants: Proteomics Approach

Heavy Metal Toxicity in Plants: Proteomics Approach

Programmed Cell Death and Postharvest Deterioration of Horticultural Produce

How cobalt facilitates cadmium- and ethylene precursor-induced growth inhibition and radial cell expansion in barley root tips

Contact Info

Product

Resources

About