Iron deprivation-induced reactive oxygen species generation leads to non-autolytic PCD in Brassica napus leaves

Tewari, Rajesh Kumar; Hadaček, Franz; Sassmann, Stefan; Lang, Ingeborg

doi:10.1016/j.envexpbot.2013.03.006

Cited by 62 publications

(32 citation statements)

References 59 publications

(49 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The O 2 À dismutates to H 2 O 2 spontaneously or catalytically by the action of superoxide dismutases (Munoz et al, 2005). Hydrogen peroxide accumulation has often been reported in plants exposed to various stresses such as summer drought (Jubany-Mari et al, 2008), hypoxia (Vergara et al, 2012), mineral nutrient deficiencies (Shin and Schachtman, 2004;Tewari et al, 2013aTewari et al, , 2006Tewari et al, , 2004 and heavy metals toxicity caused by Cd (Kumar et al, 2008a), Cu , Fe , Ni (Kumar et al, 2007) and Zn . However, information on U-induced H 2 O 2 generation or their interaction with the induction of toxic responses in U-exposed plants is unavailable in the literature.…”

Section: Introductionmentioning

confidence: 98%

Uranium exposure induces nitric oxide and hydrogen peroxide generation in Arabidopsis thaliana

Tewari

Horemans

Nauts

et al. 2015

Environmental and Experimental Botany

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 98%

Uranium exposure induces nitric oxide and hydrogen peroxide generation in Arabidopsis thaliana

Tewari

Horemans

Nauts

et al. 2015

Environmental and Experimental Botany

View full text Add to dashboard Cite

“…3(b)). This may result in the accumulation of O 2 •in the vetiver cell of PB100, which promoted chlorosis, necrotization, and hypersensitive response [51], as experimentally observed. This observation agrees with the literature reporting the clear role of SOD on the difference between a salt-tolerant cultivar and a salt-sensitive cultivar of tomato under salinity stress [52].…”

Section: Enzyme Activity: Role Of Vetiver Maturity Aeration and Rhimentioning

confidence: 58%

“…O 2 to O 2 and H 2 O in 1 min at pH 7.0 at 25°C at a substrate concentration of 50 mM H 2 O 2 . 43 P. Teeratitayangkul et al / Desalination and Water Treatment 159 (2019)[40][41][42][43][44][45][46][47][48][49][50][51][52] …”

mentioning

confidence: 99%

Rhizomicrobial-augmented mature vetiver root system rapidly degrades phenol in illegally dumped industrial wastewater

Teeratitayangkul¹,

Phutthasimma²,

Wichai³

et al. 2019

Desalination and Water Treatment

View full text Add to dashboard Cite

a b s t r a c tIllegal dumping of phenol-concentrated industrial wastewater in a residential area poses serious health risks to the community in Thailand. Thus, a low-cost and easily implementable treatment technique that the affected community can perform is greatly beneficial. Here, we evaluated the enhanced phenol-degradation kinetics using a rhizomicrobial-augmented mature vetiver root system on a floating platform (with and without aeration) in comparison to a previously published study of a young vetiver root system. The mature vetiver root was covered with a biofilm of phenol-degrading rhizomicrobes including bacteria (Enterobacter spp., Pseudomonas spp., Rhodococcus spp., and Acinetobacter spp.) and fungi (Candida spp., Rhizopus spp., Aspergillus spp., and Fusarium spp.). Phenol (500 mg L -1 ) was degraded to 1 mg L -1 in 249 h using rhizomicrobial-augmented mature vetiver with aeration. Using young vetiver plantlets with aeration, this occurred in 675 h, and using rhizomicrobial-augmented mature vetiver without aeration, this occurred in 766 h. The findings suggest that, in addition to augmented rhizomicrobes, vetiver maturity and aeration substantially contribute to the enhancement. The vetiver maturity increased the root biomass, which releases more peroxidase for accelerating phenol transformation, and enhanced the superoxide dismutase activity, which decreases the side effects of phenol detoxification. Aeration enhanced the peroxidase and superoxide dismutase activity in the vetiver and augmented rhizomicrobes to accelerate the phenol polymerization to non-toxic by-products.

show abstract

“…Plant performance was severely affected and the lower growth and compromised survival under Fe excess correlated with lower photosynthesis-related gene expression and cell death-related GO term regulation. These symptoms were expected because of the cytotoxic redox effects of elevated Fe in cells and plants, reported before (Tewari, Hadacek, Sassmann, & Lang, 2013).…”

Section: Discussionmentioning

confidence: 83%

Transcriptomic expression patterns of two contrasting lowland rice varieties reveal high iron stress tolerance

Kar

Khalouf

et al. 2020

Preprint

View full text Add to dashboard Cite

analyzed the data; P.B. and H.-J.M. wrote the original draft; and H.-J.M., A.B., S.K.P., G.X., L.S. and P.B. reviewed and edited the article; P.B. acquired funding. Summary statementLowland rice varieties Hacha and Lachit were selected for contrasting abilities to cope with iron excess stress. Morphological and physiological phenotypes were mirrored by molecular transcriptome changes, indicating altered metal homeostasis in the root as an adaptive tolerance mechanism in Lachit. AbstractIron (Fe) toxicity is a major challenge for plant cultivation in acidic water-logged soil environments, where lowland rice is a major staple food crop. Only few studies addressed the molecular characterization of excess Fe tolerance in rice, and these highlight different mechanisms for Fe tolerance in the studied varieties.Here, we screened 16 lowland rice varieties for excess Fe stress growth responses to identify contrasting lines, Fe-tolerant Lachit and -susceptible Hacha. Hacha and Lachit differed in their physiological and morphological responses to excess Fe, including leaf growth, leaf rolling, reactive oxygen species generation, Fe and metal contents. These responses were mirrored by differential gene expression patterns, obtained through RNA-sequencing, and corresponding GO term enrichment in tolerant versus susceptible lines. From the comparative transcriptomic profiles between Lachit and Hacha in response to excess Fe stress, individual genes of the category metal homeostasis, mainly root-expressed, may contribute to the tolerance of Lachit. 22 out of these 35 metal homeostasis genes are present in selection sweep genomic regions, in breeding signatures and/or differentiated during rice domestication. These findings will serve to design targeted Fe tolerance breeding of rice crops.

show abstract

Iron deprivation-induced reactive oxygen species generation leads to non-autolytic PCD in Brassica napus leaves

Cited by 62 publications

References 59 publications

Uranium exposure induces nitric oxide and hydrogen peroxide generation in Arabidopsis thaliana

Uranium exposure induces nitric oxide and hydrogen peroxide generation in Arabidopsis thaliana

Rhizomicrobial-augmented mature vetiver root system rapidly degrades phenol in illegally dumped industrial wastewater

Transcriptomic expression patterns of two contrasting lowland rice varieties reveal high iron stress tolerance

Contact Info

Product

Resources

About