Signaling in Soybean Phenylpropanoid Responses (Dissection of Primary, Secondary, and Conditioning Effects of Light, Wounding, and Elicitor Treatments)

Graham, Terrence L.; Graham, Madge Y.

doi:10.1104/pp.110.4.1123

Cited by 125 publications

(70 citation statements)

References 31 publications

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“…The content of all identified isoflavones increased in all stress-treated samples, which confirms previously published data [26,33,37,38]. Wu [39] demonstrated that soybean isoflavones show free radical scavenging potential, with aglycones (daidzein and genistein) being stronger scavengers than their glycoside conjugates (daizdin and genistin).…”

Section: Figsupporting

confidence: 77%

Influence of abiotic stress during soybean germination followed by recovery on the phenolic compounds of radicles and their antioxidant capacity

et al. 2014

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Abiotic stress factors are among the major causes of lower crop yields. It is known, that in response to cold and/or osmotic stress, crops activate various defense mechanisms, including morphological, physiological and metabolic adaptations. Secondary metabolism, especially phenolic compounds, seem to be an important factor of stress-induced metabolic re-engineering as their levels are alternated by abiotic stress in plants. Despite the fact, that the nature and function of phenolic compounds was already studied in various plant species, it is important to define tissue-specific changes induced by two most potent abiotic stressors -low temperature and decreased water potential. Moreover, in fields, the appearance of single stress is rather rare. Usually two or more factors are acting in parallel, which may potentially result in different effects. Therefore, the aim of this study was to analyze selected elements of secondary metabolism in roots of germinating soybean seeds under cold stress, osmotic stress and both stresses combined. In addition the effects of constant and persistent stress were compared to those induced by sudden and brief stress appearance, as well as after the post-stress recovery process. In the presented study standard methods for identification and quantification of phenolic acids and isoflavones were used and the antioxidant capacity of the radicle extracts was measured. The phenolic metabolism in plants was greatly intensified in response to cold and osmotic stress and remained at high level during the post-stress recovery. The amount and composition of both phenolic acids and identified isoflavones also changed in stress-and duration-dependent manner. This proves an important role of phenolic compounds in abiotic stress response of germinating soybean seeds and opens up new perspectives for further investigations.

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Section: Figsupporting

confidence: 77%

Influence of abiotic stress during soybean germination followed by recovery on the phenolic compounds of radicles and their antioxidant capacity

et al. 2014

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“…4, see also Shelp et al 1999;Allan et al 2008). There was no evidence that water stress affected the phenylpropanoid pathway in either species, which is at odds with observations that many aspects of phenylpropanoid metabolism are responsive to stress (Dixon and Paiva 1995;Graham and Graham 1996;Salekdeh et al 2002;Singh et al 2009), but may reflect inherent limitations of GC-MS for quantification of phenylpropanoids.…”

Section: Response Of Leaf Metabolites To Water Stresscontrasting

confidence: 52%

Metabolomics demonstrates divergent responses of two Eucalyptus species to water stress

2011

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Past studies of water stress in Eucalyptus spp. generally highlighted the role of fewer than five "important" metabolites, whereas recent metabolomic studies on other genera have shown tens of compounds are affected. There are currently no metabolite profiling data for responses of stress-tolerant species to water stress. We used GC-MS metabolite profiling to examine the response of leaf metabolites to a long (2 month) and severe (^Ppredawn < -2 MPa) water stress in two species of the perennial tree genus Eucalyptus (the mesic Eucalyptus pauciflora and the semi-arid Eucalyptus dumosa). Polar metabolites in leaves were analysed by GC-MS and inorganic ions by capillary electrophoresis. Pressure-volume curves and metabolite measurements showed that water stress led to more negative osmotic potential and increased total osmotically active solutes in leaves of both species. Water stress affected around 3(MK)% of measured metabolites in E. dumosa and 10-15% in E. pauciflora. There were many metabolites that were affected in E. dumosa but

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“…Therefore, although quite high doses of JA were applied, the amount finally reaching a putative JA receptor may have been much lower. A number of recent reports support the view of JA a s a n enhancer of defense responses (Graham and Graham, 1996;Kauss e t al., 1994;Nojiri et al, 1996;Schweizer et al, 1997;Xu et al, 1994). The fact that ASP3l accumulation is enhanced by JA, although JA by itself could not induce accumulation of this protein, is a clear indication of the existence of a signaling network between the octadecanoid pathway a n d another, INA-induced pathway (Figs.…”

Section: Discussionmentioning

confidence: 77%

Gene-Expression Patterns and Levels of Jasmonic Acid in Rice Treated with the Resistance Inducer 2,6-Dichloroisonicotinic Acid

1997

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Signaling in Soybean Phenylpropanoid Responses (Dissection of Primary, Secondary, and Conditioning Effects of Light, Wounding, and Elicitor Treatments)

Cited by 125 publications

References 31 publications

Influence of abiotic stress during soybean germination followed by recovery on the phenolic compounds of radicles and their antioxidant capacity

Influence of abiotic stress during soybean germination followed by recovery on the phenolic compounds of radicles and their antioxidant capacity

Metabolomics demonstrates divergent responses of two Eucalyptus species to water stress

Gene-Expression Patterns and Levels of Jasmonic Acid in Rice Treated with the Resistance Inducer 2,6-Dichloroisonicotinic Acid

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