Alternative oxidase regulation in roots of Vigna unguiculata cultivars differing in drought/salt tolerance

Costa, José Hélio; Jolivet, Yves; Hasenfratz‐Sauder, Marie‐Paule; Orellano, Elena G.; Lima, María da Guia Silva; Dizengremel, Pierre; Melo, Dirce Fernandes de

doi:10.1016/j.jplph.2006.04.001

Cited by 59 publications

(42 citation statements)

References 41 publications

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“…Drought tolerance screening related to Polyethylene (PEG) induced water stress has successfully been performed in many agricultural plant species such as Matricaria chamomilla (Afzali et al, 2006), Soybean (Hamayun et al, 2010), Helianthus annuus (Ahmad et al, 2009), Triticum aestivum (Raziuddin et al, 2010;Mujtaba et al, 2007;Shafeeq, et al, 2006), sugarcane (Errabi et al, 2006;Errabi et al, 2007), rice (Ahmad et al, 2007;Liu et al, 2007;Lefèvre et al, 2001), cowpea (Costa et al, 2007), alfalfa (Safarnejad, 2008), lentil (Yupsanis et al, 2001), maize and halophyte species i.e. Sevium portulacastrum (Slama et al, 2007), Cantaurea ragusina (Radić et al, 2005;Radić et al, 2006), Suaeda salsa and Kalanchoe claigremontiana (Kefu et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

Effects Of Drought Stress on Germination in Fourteen Provenances of Pinus Brutia Ten. Seeds in Turkey

Şevik

Ertürk

2015

Turkish JAF Sci.Tech.

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Pinus brutia Ten., Red pine, known to be tough drought resistant pine specie, could effectively be used for afforestation of disturbed areas. It is of great interest for the afforestation in arid zones. Appropriate seed sources for the specific areas guarantees reforestation success. Away from its native areas Pinus brutia Ten. is planted for its ornamental value and timber production purposes. Selection of drought resistant provenances can very well increase the survival success. In this study, the effects of water potential on germination were studied in fourteen provenances of Pinus brutia Ten. from Turkey. Water potentials between 0 and -8 bars were obtained using polyethylene glycol 6000 (PEG-6000) solutions. Seeds were kept for 35 day at 20 ± 0.5°C. A decrease in water potential produced a marked reduction in germination percentage and germination value. As a result, significant variations between the provenances were found. It was determined that, under a -8 bar water stress, Isparta-Bucak and Mersin-Silifke, respectively corresponding to 58% and 57% of the control group, were the least water stress affected provenances.

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Section: Discussionmentioning

confidence: 99%

Effects Of Drought Stress on Germination in Fourteen Provenances of Pinus Brutia Ten. Seeds in Turkey

Şevik

Ertürk

2015

Turkish JAF Sci.Tech.

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“…Low temperature (4À10 C) leads to an increase in the expression of AOX1a and AOX1b in rice and soybean AOX1 (Ito et al 1997;Djajanegara et al 2002). Osmotic stress in cowpea and ozone treatment of tobacco have also been shown to influence AOX expression (Ederli et al 2006;Costa et al 2007). Expression of AOX1a in A. thaliana is increased by treatment of plants with ozone, salt, ultraviolet light, cold and osmotic stress (Elhafez et al 2006).…”

Section: Transcriptional Control Of Aox Genesmentioning

confidence: 99%

Alternative oxidase: an inter-kingdom perspective on the function and regulation of this broadly distributed 'cyanide-resistant' terminal oxidase

McDonald¹

2008

Functional Plant Biol.

114

106

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Abstract. Alternative oxidase (AOX) is a terminal quinol oxidase located in the respiratory electron transport chain that catalyses the oxidation of quinol and the reduction of oxygen to water. However, unlike the cytochrome c oxidase respiratory pathway, the AOX pathway moves fewer protons across the inner mitochondrial membrane to generate a proton motive force that can be used to synthesise ATP. The energy passed to AOX is dissipated as heat. This appears to be very wasteful from an energetic perspective and it is likely that AOX fulfils some physiological function(s) that makes up for its apparent energetic shortcomings. An examination of the known taxonomic distribution of AOX and the specific organisms in which AOX has been studied has been used to explore themes pertaining to AOX function and regulation. A comparative approach was used to examine AOX function as it relates to the biochemical function of the enzyme as a quinol oxidase and associated topics, such as enzyme structure, catalysis and transcriptional expression and post-translational regulation. Hypotheses that have been put forward about the physiological function(s) of AOX were explored in light of some recent discoveries made with regard to species that contain AOX. Fruitful areas of research for the AOX community in the future have been highlighted.

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“…For example, in soybean, AOX2a and AOX2b (GmAOX2a and GmAOX2b) are the predominantly expressed genes in a variety of organs at different growth stages, whereas, in Arabidopsis, AOX1a and AOX1c (AtAOX1a and AtAOX1c) display the highest expression levels (Thirkettle-Watts et al, 2003). Furthermore, even when closely related species are compared, such as soybean and Vigna, there appears to be differences in how the single AOX1 gene in these species is regulated (Costa et al, 2007).…”

mentioning

confidence: 99%

Characterization of the Regulatory and Expression Context of an Alternative Oxidase Gene Provides Insights into Cyanide-Insensitive Respiration during Growth and Development

Giraud

Lister

et al. 2007

Plant Physiology

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Alternative oxidase (AOX) is encoded in small multigene families in plants. Functional analysis of the Arabidopsis (Arabidopsis thaliana) alternative oxidase 1c (AtAOX1c) promoter, an AOX gene not induced by oxidative stress, indicated that regulation of expression was complex, with the upstream promoter region containing positive and negative response regions. Comparison to the promoter region of soybean (Glycine max) alternative oxidase 2b (GmAOX2b), another AOX gene not induced by oxidative stress, revealed that they contained seven sequence elements in common. All elements were active in the promoter region of AtAOX1c in suspension cells and in leaf tissue from Columbia and mutant plants, where a mitochondrial protein import receptor was inactivated. Analysis of coexpressed and putatively coregulated genes, the latter defined as containing five or more sequence elements functional in AtAOX1c, indicated that AtAOX1c was coregulated with components involved with cell division and growth. Consistent with this analysis, we demonstrated that site II elements, previously shown to regulate the proliferating cell nuclear antigen, are present in the upstream promoter region of AtAOX1c and were strong negative regulators of AtAOX1c expression. It was demonstrated that NDB4, a gene encoding an external NAD(P)H dehydrogenase, displayed strong coexpression with AtAOX1c. Overall, these results indicate that AtAOX1c is regulated by growth and developmental signals.

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Alternative oxidase regulation in roots of Vigna unguiculata cultivars differing in drought/salt tolerance

Cited by 59 publications

References 41 publications

Effects Of Drought Stress on Germination in Fourteen Provenances of Pinus Brutia Ten. Seeds in Turkey

Effects Of Drought Stress on Germination in Fourteen Provenances of Pinus Brutia Ten. Seeds in Turkey

Alternative oxidase: an inter-kingdom perspective on the function and regulation of this broadly distributed 'cyanide-resistant' terminal oxidase

Characterization of the Regulatory and Expression Context of an Alternative Oxidase Gene Provides Insights into Cyanide-Insensitive Respiration during Growth and Development

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