Aluminum-induced programmed cell death promoted by AhSAG, a senescence-associated gene in Arachis hypoganea L.

Zhan, Jiasui; He, Hua; Wang, Tianju; Wang, Aiqin; ChuangZhen, Li; He, Long-Fei

doi:10.1016/j.plantsci.2013.05.012

Cited by 34 publications

(12 citation statements)

References 62 publications

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“…Zhan et al ([2011]) reported firstly Al induced PCD in peanut, and the cloned AhSAG (a senescence-associated gene) could induce or promote the occurrence of PCD in plants. Unfortunately, it should take 4 days for Al inducing PCD in the report (Zhan et al [2013]). The type of Al-induce PCD could not be determined in peanut, and the mechanism and regulation referred to PCD have poorly understood.…”

Section: Introductionmentioning

confidence: 99%

Aluminum induces rapidly mitochondria-dependent programmed cell death in Al-sensitive peanut root tips

Huang

et al. 2014

Bot Stud

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BackgroundAlthough many studies suggested that aluminum (Al) induced programmed cell death (PCD) in plants, the mechanism of Al-induced PCD and its effects in Al tolerance is limited. This study was to investigate the mechanism and type of Al induced PCD and the relationship between PCD and Al tolerance.ResultsIn this study, two genotypes of peanut 99-1507 (Al tolerant) and ZH2 (Al sensitive) were used to investigate Al-induced PCD. Peanut root growth inhibition induced by AlCl3 was concentration and time-dependent in two peanut varieties. AlCl3 at 100 μM could induce rapidly peanut root tip PCD involved in DNA cleavage, typical apoptotic chromatin condensation staining with DAPI, apoptosis related gene Hrs203j expression and cytochrome C (Cyt c) release from mitochondria to cytosol. Caspase3-like protease was activated by Al; it was higher in ZH2 than in 99-1507. Al increased the opening of mitochondrial permeability transition pore (MPTP), decreased inner membrane potential (ΔΨm) of mitochondria. Compared with the control, Al stress increased O2•- and H2O2 production in mitochondria. Reactive oxygen species (ROS) burst was produced at Al treatment for 4 h.ConclusionsAl-induced PCD is earlier and faster in Al-sensitive peanut cultivar than in Al-tolerant cultivar. There is a negative relationship between PCD and Al resistance. Mitochondria- dependence PCD was induced by Al and ROS was involved in this process. The mechanism can be explained by the model of acceleration of senescence under Al stress.Electronic supplementary materialThe online version of this article (doi:10.1186/s40529-014-0067-1) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Aluminum induces rapidly mitochondria-dependent programmed cell death in Al-sensitive peanut root tips

Huang

et al. 2014

Bot Stud

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“…DNA fragmentation in plants has also been observed during germination (Wang et al 1996) and following exposure to salt stress (Katsuhara and Kawasaki 1996) or aluminum (Surapu et al 2014; Zhan et al 2013). Al has a negative effect that arises from an increase in the rigidity of the DNA double helix; this can affect DNA composition and chromatin structure (Gupta et al 2013).…”

Section: Discussionmentioning

confidence: 99%

Protoplasts: a friendly tool to study aluminum toxicity and coffee cell viability

et al. 2016

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ObjectiveAluminum toxicity is a major limiting factor with regard to crop production and quality in most acidic soils around the world. We propose the use of C. arabica L. protoplasts to evaluate the toxic effects of aluminum, the nuclear localization of aluminum and propensity of aluminum to cause DNA damage.ResultsAfter protoplasts were exposed to aluminum (Al) for varying periods of time (0, 5, 10, 20 and 30 min), we detected a reduction in protoplast viability. Additionally, we observed a rapid decline in the ability of protoplasts to synthesize DNA following exposure to Al for 30 min. Furthermore, DNA damage was observed after 10 min of treatment with Al.ConclusionsProtoplasts can be used to evaluate the effects of Al upon entry into the cell, which affects the structure of the nucleus. These results indicate that protoplasts provide a useful model for the study Al toxicity at the cellular level.

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“…Plants deploy this mechanism for the purposes of development and defense [2,16,38] and generate ROS, that are central to the regulation of PCD. During stress, an imbalance between ROS generation and scavenging results in oxidative burst.…”

Section: Discussionmentioning

confidence: 99%

Tospo viral infection instigates necrosis and premature senescence by micro RNA controlled programmed cell death in Vigna unguiculata

Permar

Singh

Pandey

et al. 2014

Physiological and Molecular Plant Pathology

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Aluminum-induced programmed cell death promoted by AhSAG, a senescence-associated gene in Arachis hypoganea L.

Cited by 34 publications

References 62 publications

Aluminum induces rapidly mitochondria-dependent programmed cell death in Al-sensitive peanut root tips

Aluminum induces rapidly mitochondria-dependent programmed cell death in Al-sensitive peanut root tips

Protoplasts: a friendly tool to study aluminum toxicity and coffee cell viability

Tospo viral infection instigates necrosis and premature senescence by micro RNA controlled programmed cell death in Vigna unguiculata

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