Gene expression profiling in maize roots under aluminum stress

Cançado, Geraldo M. A.; Nogueira, Fábio Tebaldi Silveira; Camargo, Sandra R.; Drummond, Rodrigo Duarte; Jorge, Renato Atílio; Menossi, Marcelo

doi:10.1007/s10535-008-0093-5

Cited by 16 publications

(25 citation statements)

References 59 publications

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“…When rice is exposed to toxic levels of Al, the ASR transcription factors act concertedly and complementarily, recognizing the cis -acting elements in the promoters of the STAR1 gene to potentiate the Al response expression of a set of target genes [15–17]. Another family of transcription factors that responds to Al is NAC [1,18], which are specific to plants [19–21]. The acronym, NAC, derives from three genes that codify the NAC domain: NAM (for no apical meristem ), ATAF1/2 (for Arabidopsis thaliana Activation Factor 1/2 ), and CUC2 (for cup-shaped cotyledon 2 ).…”

Section: Introductionmentioning

confidence: 99%

Expression patterns and promoter analyses of aluminum-responsive NAC genes suggest a possible growth regulation of rice mediated by aluminum, hormones and NAC transcription factors

et al. 2017

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In acid soils, the solubilized form of aluminum, Al+3, decreases root growth and affects the development of most crops. However, like other toxic elements, Al can have hormetic effects on plant metabolism. Rice (Oryza sativa) is one of the most tolerant species to Al toxicity, and when this element is supplied at low doses, growth stimulation has been observed, which could be due to combined mechanisms that are partly triggered by NAC transcription factors. This protein family can regulate vital processes in plants, including growth, development, and response to environmental stimuli, whether biotic or abiotic. Under our experimental conditions, 200 μM Al stimulated root growth and the formation of tillers; it also caused differential expression of a set of NAC genes. The promoter regions of the genes regulated by Al were analyzed and the cis-acting elements that are potentially involved in the responses to different stimuli, including environmental stress, were identified. Through the Genevestigator platform, data on the expression of NAC genes were obtained by experimental condition, tissue, and vegetative stage. This is the first study on NAC genes where in vivo and in silico data are complementarily analyzed, relating the hormetic effect of Al on plant growth and gene expression with a possible interaction in the response to phytohormones in rice. These findings could help to elucidate the possible convergence between the signaling pathways mediated by phytohormones and the role of the NAC transcription factors in the regulation of growth mediated by low Al doses.

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Section: Introductionmentioning

confidence: 99%

Expression patterns and promoter analyses of aluminum-responsive NAC genes suggest a possible growth regulation of rice mediated by aluminum, hormones and NAC transcription factors

et al. 2017

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“…It has been reported that Al affects the expression of some genes, including those encoding pathogen-, wounding-and oxidative stressinduced proteins, phenyl ammonia-lyase, chitinase and a glutathione S-transferase (Ezaki et al 2000;Watt 2003;Xiao et al 2005;Cancado et al 2005Cancado et al , 2008Tabaldi et al 2009). But these studies have been restricted to wheat, maize, potato, Arabidopsis thaliana and some other species.…”

Section: Introductionmentioning

confidence: 99%

Differential expression of expressed sequence tags in alfalfa roots under aluminum stress

Fan

et al. 2010

Acta Physiol Plant

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To gain a better understanding of differentially expressed sequence tags (ESTs) for aluminum (Al) tolerance and to investigate the molecular mechanisms of Al toxicity, cDNA subtraction libraries were generated from Al-stressed roots of alfalfa (Medicago sativa L.) compared with no Al-stressed ones, employing suppression subtractive hybridization. Using differential screening technique in which the probes were labeled with DIG, we identified 45 non-redundant ESTs in Al-stressed alfalfa root tips with significantly altered expression. Among the up-regulated ESTs, we have found genes encoding identified proteins, including malate dehydrogenase, 6-phosphogluconate dehydrogenase, peroxidase, and an ABC transporter, while the down-regulate genes included ATPase, secretory carrier membrane protein 2, pectinesterase inhibitor. In addition, two novel ESTs, EW678752 and EY976957, up-and down-regulated by Al stress were sequenced. Analyzed by real-time PCR, the expressions of EST EW678718, EW678739, EY976969 and EW678728, which encode for ABC transporter, malate dehydrogenase, peroxidase and 6-phosphogluconate dehydrogenase correspondingly, increased 1.64-, 2.75-, 3.27-and 6.54-folds, respectively, and the expression of EY976957 encoding for ATPase decreased 3.27 folds. The expression of EST EW678752 increased 34.54-fold, while that of EY976957 decreased 16.68 folds. It suggested that the two novel ESTs maybe play a significant role in the aluminum tolerance of alfalfa.

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“…sucest-fun.org) has been used to study biochemical pathways related to Al toxicity in related grasses such as maize, barley and sorghum due to the level of genomic conservation (Drummond et al 2001). For instance, sugarcane expressed sequence tags (ESTs) were used to analyze the expression profile of maize genes in root tips of Al-tolerant and Al-sensitive genotypes (Cançado et al 2008). These authors reported up-regulated ESTs in Al-stressed maize roots, involving genes encoding proteins such as chitinase, phenylalanine ammonia lyase and a Bowman-Birk proteinase inhibitor, which are induced by Al stress (Cançado et al 2008).…”

Section: Toxic Metal Stressmentioning

confidence: 99%

“…For instance, sugarcane expressed sequence tags (ESTs) were used to analyze the expression profile of maize genes in root tips of Al-tolerant and Al-sensitive genotypes (Cançado et al 2008). These authors reported up-regulated ESTs in Al-stressed maize roots, involving genes encoding proteins such as chitinase, phenylalanine ammonia lyase and a Bowman-Birk proteinase inhibitor, which are induced by Al stress (Cançado et al 2008). Al is a very commonly occurring metal and due to its world-wide distribution in soils and in the earth's crust, deserves special attention particularly if sugarcane is to be cultivated in Al-contaminated soils.…”

Section: Toxic Metal Stressmentioning

confidence: 99%

Sugarcane Under Pressure: An Overview of Biochemical and Physiological Studies of Abiotic Stress

Azevedo

Carvalho

Cicarelli

et al. 2011

Tropical Plant Biol.

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Sugarcane is now an extremely important crop, particularly in tropical countries. Its use for sugar and ethanol production is critical and cultivated area and biomass yield are increasing. Environmental pollution by anthropogenic activities is perhaps one of the most disturbing problems the world is facing and the cultivation of crops is subjected to this pollution, which may result in drastic effects on crop production. Curiously, the literature on the study of abiotic stresses on sugarcane is very limited, indicating that there is far more research to be done and investigations on this topic need to be prioritized. In this article, we have tried to focus on four key abiotic stresses, drought, temperature, salt and toxic metals, to which sugarcane is most likely to be subjected and reviewed the scarce current literature on the subject.

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Gene expression profiling in maize roots under aluminum stress

Cited by 16 publications

References 59 publications

Expression patterns and promoter analyses of aluminum-responsive NAC genes suggest a possible growth regulation of rice mediated by aluminum, hormones and NAC transcription factors

Expression patterns and promoter analyses of aluminum-responsive NAC genes suggest a possible growth regulation of rice mediated by aluminum, hormones and NAC transcription factors

Differential expression of expressed sequence tags in alfalfa roots under aluminum stress

Sugarcane Under Pressure: An Overview of Biochemical and Physiological Studies of Abiotic Stress

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