The role of two superoxide dismutase <scp>mRNA</scp>s in rye aluminium tolerance

Sánchez-Parra, Beatriz; Figueiras, A. M.; El-Moneim, Diaa Abd; Contreras, Roberto; Rouco, Raquel; Gallego, Francisco Javier; Benito, C.

doi:10.1111/plb.12281

Cited by 6 publications

(4 citation statements)

References 34 publications

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“…It is the first time that repression of the mCS gene following Al treatment was observed in S. cereale and B. distachyon , although repression of other genes related to organic acid metabolism ( Abd El-Moneim et al, 2015 ) or related to Al stress ( Sánchez-Parra et al, 2015 ) has been previously detected in rye.…”

Section: Discussionmentioning

confidence: 97%

“…In rye, the inbred lines Riodeva and P105 show a constitutive citrate exudation pattern ( Santos et al, 2018 ). However, the tolerant cultivars Imperial and Petkus have an inducible pattern of citrate exudation ( Abd El-Moneim et al, 2014 , 2015 ; Sánchez-Parra et al, 2015 ). In addition, different species of the Secale genus show different citric acid exudation patterns ( Santos et al, 2018 ).…”

Section: Discussionmentioning

confidence: 99%

“…In response to Al stress, the rye S. cereale , one of the most Al-tolerant cereal crops, secretes citrate and malate from its roots ( Li et al, 2000 ). Al-stress tolerant cultivars (Ailés and Petkus) and the sensitive Riodeva inbred line show pattern II (inducible) of malic exudation ( Abd El-Moneim et al, 2014 , 2015 ; Sánchez-Parra et al, 2015 ). For citrate, the tolerant Petkus also showed an inducible exudation pattern ( Abd El-Moneim et al, 2014 ).…”

Section: Introductionmentioning

confidence: 99%

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Repression of Mitochondrial Citrate Synthase Genes by Aluminum Stress in Roots of Secale cereale and Brachypodium distachyon

et al. 2022

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Aluminum (Al) toxicity in acid soils influences plant development and yield. Almost 50% of arable land is acidic. Plants have evolved a variety of tolerance mechanisms for Al. In response to the presence of Al, various species exudate citrate from their roots. Rye (Secale cereale L.) secretes both citrate and malate, making it one of the most Al-tolerant cereal crops. However, no research has been done on the role of the mitochondrial citrate synthase (mCS) gene in Al-induced stress in the rye. We have isolated an mCS gene, encoding a mitochondrial CS isozyme, in two S. cereale cultivars (Al-tolerant cv. Ailés and Al-sensitive inbred rye line Riodeva; ScCS4 gene) and in two Brachypodium distachyon lines (Al-tolerant ABR8 line and Al-sensitive ABR1 line; BdCS4 gene). Both mCS4 genes have 19 exons and 18 introns. The ScCS4 gene was located on the 6RL rye chromosome arm. Phylogenetic studies using cDNA and protein sequences have shown that the ScCS4 gene and their ScCS protein are orthologous to mCS genes and CS proteins of different Poaceae plants. Expression studies of the ScCS4 and BdSC4 genes show that the amount of their corresponding mRNAs in the roots is higher than that in the leaves and that the amounts of mRNAs in plants treated and not treated with Al were higher in the Al-tolerant lines than that in the Al-sensitive lines of both species. In addition, the levels of ScCS4 and BdCS4 mRNAs were reduced in response to Al (repressive behavior) in the roots of the tolerant and sensitive lines of S. cereale and B. distachyon.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Repression of Mitochondrial Citrate Synthase Genes by Aluminum Stress in Roots of Secale cereale and Brachypodium distachyon

et al. 2022

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“…In rye, higher Al accumulation, ROS, and cell death occurred in the Al-sensitive cultivar Riodeva compared to the Al-tolerant Petkus, along with lower SOD gene expression in the roots. Petkus, however, showed greater expression in roots than in leaves ( Sánchez-Parra et al, 2015 ). A similar behavior was observed in ryegrass ( Cartes et al, 2012 ).…”

Section: Discussionmentioning

confidence: 99%

Physiological, nutritional, and molecular responses of Brazilian sugarcane cultivars under stress by aluminum

Oliveira

Rocha

Schneider

et al. 2021

PeerJ

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Background Sugarcane is a crop of global importance and has been expanding to areas with soils containing high levels of exchangeable aluminum (Al), which is a limiting factor for crop development in acidic soils. The study of the sugarcane physiological and nutritional behavior together with patterns of gene expression in response to Al stress may provide a basis for effective strategies to increase crop productivity in acidic soils. Methods Sugarcane cultivars were evaluated for physiological parameters (photosynthesis, stomatal conductance, and transpiration), nutrient (N, P, K, Ca, Mg, and S) and Al contents in leaves and roots and gene expression, of the genes MDH, SDH by qPCR, both related to the production of organic acids, and SOD, related to oxidative stress. Results Brazilian sugarcane RB867515, RB928064, and RB935744 cultivars exhibited very different responses to induced stress by Al. Exposure to Al caused up-regulation (SOD and MDH) or down-regulation (SDH, MDH, and SOD), depending on the cultivar, Al level, and plant tissue. The RB867515 cultivar was the most Al-tolerant, showing no decline of nutrient content in plant tissue, photosynthesis, transpiration, and stomatal conductance after exposure to Al; it exhibited the highest Al content in the roots, and showed important MDH and SOD gene expression in the roots. RB928064 only showed low expression of SOD in roots and leaves, while RB935744 showed important expression of the SOD gene only in the leaves. Sugarcane cultivars were classified in the following descending Al-tolerance order: RB867515 > RB928064 = RB935744. These results may contribute to the obtention of Al-tolerant cultivars that can play their genetic potential in soils of low fertility and with low demand for agricultural inputs; the selection of potential plants for breeding programs; the elucidation of Al detoxification mechanisms employed by sugarcane cultivars.

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Omics Tools to Understand Abiotic Stress Response and Adaptation in Rye, Oat and Barley

Singh,

Roychoudhury

2022

Omics Approach to Manage Abiotic Stress in Cereals

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The role of two superoxide dismutase mRNAs in rye aluminium tolerance

Cited by 6 publications

References 34 publications

Repression of Mitochondrial Citrate Synthase Genes by Aluminum Stress in Roots of Secale cereale and Brachypodium distachyon

Repression of Mitochondrial Citrate Synthase Genes by Aluminum Stress in Roots of Secale cereale and Brachypodium distachyon

Physiological, nutritional, and molecular responses of Brazilian sugarcane cultivars under stress by aluminum

Omics Tools to Understand Abiotic Stress Response and Adaptation in Rye, Oat and Barley

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