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Redox biology response in germinating Phaseolus vulgaris seeds exposed to copper: Evidence for differential redox buffering in seedlings and cotyledon.

In agriculture, heavy metal contamination of soil interferes with processes associated with plant growth, development and productivity. Here, we describe oxidative and redox changes, and deleterious injury within cotyledons and seedlings caused by exposure of germinating (Phaseolus vulgaris L. var.... Full description

Journal Title: PloS one 2017, Vol.12(10), p.e0184396
Main Author: Karmous, Inès
Other Authors: Trevisan, Rafael , El Ferjani, Ezzeddine , Chaoui, Abdelilah , Sheehan, David
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: E-ISSN: 1932-6203 ; DOI: 1932-6203 ; DOI: 10.1371/journal.pone.0184396
Link: http://search.proquest.com/docview/1948753870/?pq-origsite=primo
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title: Redox biology response in germinating Phaseolus vulgaris seeds exposed to copper: Evidence for differential redox buffering in seedlings and cotyledon.
format: Article
creator:
  • Karmous, Inès
  • Trevisan, Rafael
  • El Ferjani, Ezzeddine
  • Chaoui, Abdelilah
  • Sheehan, David
subjects:
  • Copper–Pharmacology
  • Cotyledon–Drug Effects
  • Germination–Metabolism
  • Oxidation-Reduction–Drug Effects
  • Phaseolus–Physiology
  • Seedlings–Drug Effects
  • Soil–Metabolism
  • Soil–Drug Effects
  • Soil–Metabolism
  • Soil
  • Copper
ispartof: PloS one, 2017, Vol.12(10), p.e0184396
description: In agriculture, heavy metal contamination of soil interferes with processes associated with plant growth, development and productivity. Here, we describe oxidative and redox changes, and deleterious injury within cotyledons and seedlings caused by exposure of germinating (Phaseolus vulgaris L. var. soisson nain h#226;tif) seeds to copper (Cu). Cu induced a marked delay in seedling growth, and was associated with biochemical disturbances in terms of intracellular oxidative status, redox regulation and energy metabolism. In response to these alterations, modulation of activities of antioxidant proteins (thioredoxin and glutathione reductase, peroxiredoxin) occurred, thus preventing oxidative damage. In addition, oxidative modification of proteins was detected in both cotyledons and seedlings by one- and two-dimensional electrophoresis. These modified proteins may play roles in redox buffering. The changes in activities of redox proteins underline their fundamental roles in controlling redox homeostasis. However, observed differential redox responses in cotyledon and seedling tissues showed a major capacity of the seedlings' redox systems to protect the reduced status of protein thiols, thus suggesting quantitatively greater antioxidant protection of proteins in seedlings compared to cotyledon. To our knowledge, this is the first comprehensive redox biology investigation of the effect of Cu on seed germination.
language: eng
source:
identifier: E-ISSN: 1932-6203 ; DOI: 1932-6203 ; DOI: 10.1371/journal.pone.0184396
fulltext: fulltext
issn:
  • 19326203
  • 1932-6203
url: Link


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titleRedox biology response in germinating Phaseolus vulgaris seeds exposed to copper: Evidence for differential redox buffering in seedlings and cotyledon.
creatorKarmous, Inès ; Trevisan, Rafael ; El Ferjani, Ezzeddine ; Chaoui, Abdelilah ; Sheehan, David
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subjectCopper–Pharmacology ; Cotyledon–Drug Effects ; Germination–Metabolism ; Oxidation-Reduction–Drug Effects ; Phaseolus–Physiology ; Seedlings–Drug Effects ; Soil–Metabolism ; Soil–Drug Effects ; Soil–Metabolism ; Soil ; Copper
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descriptionIn agriculture, heavy metal contamination of soil interferes with processes associated with plant growth, development and productivity. Here, we describe oxidative and redox changes, and deleterious injury within cotyledons and seedlings caused by exposure of germinating (Phaseolus vulgaris L. var. soisson nain h#226;tif) seeds to copper (Cu). Cu induced a marked delay in seedling growth, and was associated with biochemical disturbances in terms of intracellular oxidative status, redox regulation and energy metabolism. In response to these alterations, modulation of activities of antioxidant proteins (thioredoxin and glutathione reductase, peroxiredoxin) occurred, thus preventing oxidative damage. In addition, oxidative modification of proteins was detected in both cotyledons and seedlings by one- and two-dimensional electrophoresis. These modified proteins may play roles in redox buffering. The changes in activities of redox proteins underline their fundamental roles in controlling redox homeostasis. However, observed differential redox responses in cotyledon and seedling tissues showed a major capacity of the seedlings' redox systems to protect the reduced status of protein thiols, thus suggesting quantitatively greater antioxidant protection of proteins in seedlings compared to cotyledon. To our knowledge, this is the first comprehensive redox biology investigation of the effect of Cu on seed germination.
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