Differential superoxide dismutase expression in ryegrass cultivars in response to short term aluminium stress

Cartes, Paula; McManus, Michael T.; Wulff-Zottele, Cristián; Leung, Susanna; Gutiérrez-Moraga, Ana; Mora, María de la Luz

doi:10.1007/s11104-011-0919-3

Cited by 36 publications

(27 citation statements)

References 44 publications

(62 reference statements)

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“…Manganese toxicity may depress photosynthesis as well as the uptake, translocation and utilization of other mineral elements (Ryan and Delhaize 2010). In addition, numerous studies have shown that Al and Mn toxicities can also induce the formation of reactive oxygen species (ROS), and thus trigger oxidative stress in plants (Darkó et al 2004;Mora et al 2009;Cartes et al 2012;Ribera et al 2013).…”

Section: Aluminium and Manganese Toxicitiesmentioning

confidence: 99%

Silicon in vascular plants: uptake, transport and its influence on mineral stress under acidic conditions

Pontigo

Ribera

Gianfreda

et al. 2015

Planta

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So far, considerable advances have been achieved in understanding the mechanisms of Si uptake and transport in vascular plants. This review presents a comprehensive update about this issue, but also provides the new insights into the role of Si against mineral stresses that occur in acid soils. Such information could be helpful to understand both the differential Si uptake ability as well as the benefits of this mineral element on plants grown under acidic conditions. Silicon (Si) has been widely recognized as a beneficial element for many plant species, especially under stress conditions. In the last few years, great efforts have been made to elucidate the mechanisms involved in uptake and transport of Si by vascular plants and recently, different Si transporters have been identified. Several researches indicate that Si can alleviate various mineral stresses in plants growing under acidic conditions, including aluminium (Al) and manganese (Mn) toxicities as well as phosphorus (P) deficiency all of which are highly detrimental to crop production. This review presents recent findings concerning the influence of uptake and transport of Si on mineral stress under acidic conditions because a knowledge of this interaction provides the basis for understanding the role of Si in mitigating mineral stress in acid soils. Currently, only four Si transporters have been identified and there is little information concerning the response of Si transporters under stress conditions. More investigations are therefore needed to establish whether there is a relationship between Si transporters and the benefits of Si to plants subjected to mineral stress. Evidence presented suggests that Si supply and its subsequent accumulation in plant tissues could be exploited as a strategy to improve crop productivity on acid soils.

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Section: Aluminium and Manganese Toxicitiesmentioning

confidence: 99%

Silicon in vascular plants: uptake, transport and its influence on mineral stress under acidic conditions

Pontigo

Ribera

Gianfreda

et al. 2015

Planta

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“…; Cartes et al . ). Similar results were found in T. aestivum , but no differences were observed between sensitive and tolerant cultivars (Nasr et al .…”

Section: Discussionmentioning

confidence: 97%

“…SOD isoforms were up‐regulated over a longer period in sensitive Nui compared with semi‐tolerant Jumbo, leading finally to increased protection in roots against short‐term Al toxicity (Cartes et al . ). Moreover, using oligonucleotide microarrays in Medicago truncatula , Chandran et al .…”

Section: Discussionmentioning

confidence: 97%

The role of two superoxide dismutase mRNAs in rye aluminium tolerance

et al. 2015

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Aluminium (Al) is the main factor that limits crop production in acidic soils. There is evidence that antioxidant enzymes such as superoxide dismutase (SOD) play a key role against Al-induced oxidative stress in several plant species. Rye is one of the most Al-tolerant cereals and exudes both citrate and malate from the roots in response to Al. The role of SOD against Al-induced oxidative stress has not been studied in rye. Al accumulation, lipid peroxidation, H₂O₂ production and cell death were significantly higher in sensitive than in tolerant rye cultivars. Also, we characterised two genes for rye SOD: ScCu/ZnSOD and ScMnSOD. These genes were located on the chromosome arms of 2RS and 3RL, respectively, and their corresponding hypothetical proteins were putatively classified as cytosolic and mitochondrial, respectively. The phylogenetic relationships indicate that the two rye genes are orthologous to the corresponding genes of other Poaceae species. In addition, we studied Al-induced changes in the expression profiles of mRNAs from ScCu/ZnSOD and ScMnSOD in the roots and leaves of tolerant Petkus and sensitive Riodeva rye. These genes are mainly expressed in roots in both ryes, their repression being induced by Al. The tolerant cultivar has more of both mRNAs than the sensitive line, indicating that they are probably involved in Al tolerance.

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“…To measure concentrations of H 2 O 2 in leaf tissue, the Amplex ® Red Hydrogen Peroxide/Peroxidase Assay Kit (Invitrogen) was used according to the protocol supplied. Superoxide dismutase (SOD) activity was measured as described in Cartes et al (2012), and quercetin glycoside content determined as described in Ballizany et al (2012).…”

Section: Biochemical Assaysmentioning

confidence: 99%

Knock‐down of transcript abundance of a family ofKunitz proteinase inhibitorgenes in white clover (Trifolium repens) reveals a redundancy and diversity of gene function

et al. 2015

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SummaryThe transcriptional regulation of four phylogenetically distinct members of a family of Kunitz proteinase inhibitor (KPI) genes isolated from white clover (Trifolium repens; designated Tr-KPI1, Tr-KPI2, Tr-KPI4 and Tr-KPI5) has been investigated to determine their wider functional role.The four genes displayed differential transcription during seed germination, and in different tissues of the mature plant, and transcription was also ontogenetically regulated. Heterologous over-expression of Tr-KPI1, Tr-KPI2, Tr-KPI4 and Tr-KPI5 in Nicotiana tabacum retarded larval growth of the herbivore Spodoptera litura, and an increase in the transcription of the pathogenesis-related genes PR1 and PR4 was observed in the Tr-KPI1 and Tr-KPI4 overexpressing lines.RNA interference (RNAi) knock-down lines in white clover displayed significantly altered vegetative growth phenotypes with inhibition of shoot growth and a stimulation of root growth, while knock-down of Tr-KPI1, Tr-KPI2 and Tr-KPI5 transcript abundance also retarded larval growth of S. litura. Examination of these RNAi lines revealed constitutive stress-associated phenotypes as well as altered transcription of cellular signalling genes.These results reveal a functional redundancy across members of the KPI gene family. Further, the regulation of transcription of at least one member of the family, Tr-KPI2, may occupy a central role in the maintenance of a cellular homeostasis.

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Differential superoxide dismutase expression in ryegrass cultivars in response to short term aluminium stress

Cited by 36 publications

References 44 publications

Silicon in vascular plants: uptake, transport and its influence on mineral stress under acidic conditions

Silicon in vascular plants: uptake, transport and its influence on mineral stress under acidic conditions

The role of two superoxide dismutase mRNAs in rye aluminium tolerance

Knock‐down of transcript abundance of a family ofKunitz proteinase inhibitorgenes in white clover (Trifolium repens) reveals a redundancy and diversity of gene function

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