Variation in the Amino Acid Concentration During Development of Canavalia ensiformes

Camargos, Liliane Santos de; Aguiar, Leandro Ferreira; Azevedo, Ricardo Antunes

doi:10.1023/b:biop.0000033463.98440.db

Cited by 12 publications

(10 citation statements)

References 20 publications

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“…As a result, Glu and Gln, which make up the highest proportion of AAs in plant proteomes (Hildebrandt et al, 2015), are likely isotopically well-mixed within the internal nitrogen pool, potentially leading to lower variability in their δ 15 N values as compared to other AAs. Lastly, tissue-specific differences in plant trophic or source AA δ 15 N values, and by extension β values, likely occur due to differing AA concentrations and turnover rates among plant tissue types (Camargos et al, 2004;Kruse et al, 2003;Mapelli et al, 2001).…”

Section: In S I G Hts Into β Variab Ilit Y: Nitrog En a Ss Imil Ati On And Amino Acid B I Osynthe S Ismentioning

confidence: 99%

Meta‐analysis of primary producer amino acid δ¹⁵N values and their influence on trophic position estimation

et al. 2021

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Section: In S I G Hts Into β Variab Ilit Y: Nitrog En a Ss Imil Ati On And Amino Acid B I Osynthe S Ismentioning

confidence: 99%

Meta‐analysis of primary producer amino acid δ¹⁵N values and their influence on trophic position estimation

et al. 2021

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“…The concentration of asparagine ranged from 18.96 to 62.24 mg g −1 DW following germination for 4 days, having increased dramatically from almost zero in the dry seed and represented 40–50% of the soluble amino acids. Even in Canavalia ensiformis , a seed known to accumulate high concentrations of the non‐protein amino acid canavanine, asparagine was present as a higher percentage of the total amino acid pool, 7 days after germination (Camargos et al , 2004). However, it should be noted that asparagine does not always accumulate during seed germination (Lea & Joy, 1983), e.g.…”

Section: The Occurrence and Accumulation Of Asparagine In Plantsmentioning

confidence: 99%

Asparagine in plants

Lea¹,

Sodek²,

Parry³

et al. 2006

Annals of Applied Biology

566

421

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Interest in plant asparagine has rapidly taken off over the past 5 years following the report that acrylamide, a neurotoxin and potential carcinogen, is present in cooked foods, particularly carbohydrate-rich foods such as wheat and potatoes which are subjected to roasting, baking or frying at high temperatures. Subsequent studies showed that acrylamide could be formed in foods by the thermal degradation of free asparagine in the presence of sugars in the Maillard reaction. In this article, our current knowledge of asparagine in plants and in particular its occurrence in cereal seeds and potatoes is reviewed and discussed in relation to acrylamide formation. There is now clear evidence that soluble asparagine accumulates in most if not all plant organs during periods of low rates of protein synthesis and a plentiful supply of reduced nitrogen. The accumulation of asparagine occurs during normal physiological processes such as seed germination and nitrogen transport. However, in addition, stress-induced asparagine accumulation can be caused by mineral deficiencies, drought, salt, toxic metals and pathogen attack. The properties and gene regulation of the enzymes involved in asparagine synthesis and breakdown in plants are discussed in detail.

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“…In this work, histidine, arginine and threonine concentrations were shown to be higher at flowering (S2) in relation to vegetative stage (S1), whilst glycine, which was not detected in S1, was found in S2 during the flowering stage (Table 4). Camargos et al (2004) observed that glycine concentrations were higher in mature seeds in C. ensiformis, suggesting that an increase in the synthesis of this amino acid at this developmental stage can be related to its accumulation in seeds.…”

Section: Discussionmentioning

confidence: 90%

Changes in soluble amino acid composition during Canavalia ensiformis development: responses to nitrogen deficiency

Camargos

Aguiar

Souza³

et al. 2015

Theor. Exp. Plant Physiol.

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A limited number of studies focusing nitrogen metabolism have been carried out with plants from Cerrado, the second largest biome of Brazil. Canavalia ensiformes is a legume native from Cerrado and is considered an important forage crop that contributes to soil nitrogen (N) improvement. There are few studies related to amino acid metabolism and growth capacity under nitrogen deficiency for this plant species. Therefore, the objective of this work was to study the profile of soluble amino acids during the growth cycle (from vegetative to the reproductive stage) of Canavalia ensiformis. Major changes in the concentration and composition of soluble amino acids at the beginning of the reproductive stage were observed indicating important alterations in amino acids metabolism. The data revealed that N-stress conditions led to increased aspartate and decreased asparagine contents in most organs and developmental stages of C. ensiformis. A pronounced increase in glutamate concentration during N-stress was also detected. Glutamine, alanine, GABA, threonine, histidine, arginine and glycine metabolisms were probably impaired by N deficiency, which was dependent upon plant developmental stage. The effect of nitrate presence or absence on amino acids metabolism in C. ensiformis is discussed.

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Variation in the Amino Acid Concentration During Development of Canavalia ensiformes

Cited by 12 publications

References 20 publications

Meta‐analysis of primary producer amino acid δ¹⁵N values and their influence on trophic position estimation

Meta‐analysis of primary producer amino acid δ¹⁵N values and their influence on trophic position estimation

Asparagine in plants

Changes in soluble amino acid composition during Canavalia ensiformis development: responses to nitrogen deficiency

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Variation in the Amino Acid Concentration During Development of Canavalia ensiformes

Cited by 12 publications

References 20 publications

Meta‐analysis of primary producer amino acid δ15N values and their influence on trophic position estimation

Meta‐analysis of primary producer amino acid δ15N values and their influence on trophic position estimation

Asparagine in plants

Changes in soluble amino acid composition during Canavalia ensiformis development: responses to nitrogen deficiency

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Product

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Meta‐analysis of primary producer amino acid δ¹⁵N values and their influence on trophic position estimation

Meta‐analysis of primary producer amino acid δ¹⁵N values and their influence on trophic position estimation