Physiological and biochemical parameters controlling waterlogging stress tolerance in Prunus before and after drainage
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Date
2012
Authors
Amador, Maria L.Sancho, Sara
Bielsa Pérez, Beatriz
Gómez Aparisi, Joaquín
Rubio Cabetas, María José
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Journal ContributionArticle
Abstract
Waterlogging is associated with poor soil drainage. As a consequence oxygen levels decrease in the root environment inducing root asphyxia and affecting plant growth. Some plants can survive under these conditions triggering complex anatomical and biochemical adaptations, mostly in the roots. Long- and short-term responses to waterlogging stress were compared in two trials using a set of two myrobalans (Prunus cerasifera Erhr), P.2175 and P.2980, as tolerant rootstocks and two almond x peach [Prunus amygdalus Batsch x Prunus persica (L.) Batsch] interspecific hybrids, Garnem and Felinem, as sensitive ones in two consecutive years. Stomatal conductance and chlorophyll content were measured in the long-term trials to assess survival performance, while the enzyme activities of superoxide dismutase (SOD, EC 1.15.1.1), guaiacol peroxidase (POD, EC 1.11.1.7), and catalase (CAT, EC 1.11.1.6) were measured in the short-term trials to study early antioxidant response. The incidence of the stress in the root environment was different as a result of the different plant development at the moment of the treatment, as a consequence of different environmental conditions both before and during the treatment between the 2 years. The activity of the different enzymes was higher in the sensitive genotype Felinem than in the tolerant P.2175. This result shows an activation of the antioxidant system and has been observed to depend of the different nature of the roots between the 2 years. As the antioxidant enzymes seem to work more efficiently when roots are more aerated, we cannot conclude that they are responsible for the higher tolerance observed in the myrobalan plums.
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Bibliographic citation
Amador, Maria L; Sancho, S.; Bielsa, B.; Gomez-Aparisi, J.; Rubio-Cabetas, Maria J. Physiological and biochemical parameters controlling waterlogging stress tolerance in Prunus before and after drainage. Physiologia Plantarum, 2012, 144, 4, 357-368
AGROVOC subjects
PrunusPrunus cerasifera
Prunus persica
Prunus amygdalus
Estres
Antioxidantes
Suelo
Other field subjects
AnoxiaAntioxidants
Catalase
Cell-Death
Chlorophyll
Citrus
Floods
guaiacol peroxidase
Hypoxia
Metabolism
Oxidative Stress
Peroxidase
Plant Leaves
Plant Roots
Plant Transpiration
Plant-Growth
Prunus
Responses
ROOTSTOCKS
Soil
Stress, Physiological
superoxide dismutase
Time Factors
Sponsorship
This work was supported by RTA- 08-0086 and A12 research group from the Government of Aragon.