Relationship between antioxidant defence systems and salt tolerance in Solanum tuberosum

By M. Benavides, P. Marconi, S. Gallego, María E. Comba, M. Tomaro. 2000

144 citations recorded by the source corpus.

A relationship between the antioxidant defence system and salt tolerance in two clones of potato (Solanum tuberosum L.) differing in salt sensitivity was studied. The antioxidant defence system of the sensitive clone responded differently to 100 and 150 mM NaCl. At 100 mM NaCl, growth, dehydroascorbate reductase and catalase activities remained unaltered, but chlorophyll and reduced glutathione content decreased (23% and 35%, respectively), while ascorbate content and superoxide dismutase activity were increased 34% and 63%, with respect to the control (0 mM NaCl). The superoxide dismutase increment was higher under 150 mM NaCl treatment, while a general decrease (except for dehydroascorbate reductase and catalase activities) in all the antioxidant parameters studied was observed in the sensitive clone. Reduced glutathione and ascorbate, the main antioxidant soluble defences, and all antioxidant enzymes (except catalase) were significantly elevated in the tolerant clone compared to the sensitive one when both were grown in the absence of NaCl. Under 100 and 150 mM NaCl treatments, no changes in the antioxidant stress parameters were detected in the tolerant clone. These results suggest a relationship between salt tolerance and the antioxidant defence system in the two clones.

Subfields: Food Science, Plant Science

View Paper: https://www.semanticscholar.org/paper/b3ca3f7e7f41f535a1d831d9be89694687de78a0

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Citations in the corpus

Salinity stress alleviation using arbuscular mycorrhizal fungi. A review (2011, unknown): “A correlation between antioxidant capacity and NaCl tolerance has been demonstrated in several plant species (Gossett et al. 1994; Benavides et al. 2000; Núñez et al. 2003).”
Antioxidant defense mechanism under salt stress in wheat seedlings (2006, background): “(2000) and Benavides et al. (2000) who also reported higher enzyme activity in leaves of salt-tolerant than salt-sensitive cultivar of foxtail millet. The greater GR activity in salt stressed tolerant cultivar KRL-19 indicated that the tolerant plant exhibit a more active ascorbate-glutathione cycle”
In vitro selection of salt tolerant cell lines in Solanum tuberosum L. (2007, background): “In fact, the reduction in growth is a common phenomenon of salt stressed plants (Benavídes et al. 2000, Fidalgo et al. 2004, Sotiropoulos et al. 2006), which has also been observed in cultured cells on medium supplemented with NaCl (Rus et al. 1999, Shankhdhar et al. 2000, Gu et al. 2004, Lutts et…”
Behaviour of antioxidant defense system in the adaptive response to salt stress in Helianthus annuus L. cells (2003, background): “This elevated constitutive level of the antioxidant system has been related to a higher resistance to salt stress by other authors, as shown by Screenivasulu et al. (2000) in seedlings of foxtail (Setaria italica) and Benavides et al. (2000) in Solanum tuberosum.”
Arbuscular mycorrhizal fungi in alleviation of salt stress: a review. (2009, background): “APOX is also reported to be involved in detoxification of hydrogen peroxide produced in the chloroplasts of stressed host plants (Lopez et al., 1996; Benavides et al., 2000).”
DIFFERENTIAL ACCUMULATIONS OF PROLINE AND FLAVONOIDS IN INDICA RICE VARIETIES AGAINST SALINITY (2009, background): “A correlation between the antioxidant enzyme activities and salt tolerance has been demonstrated in several plant species (Dionisio-Sese & Tobita, 1998; Benavides et al., 2000; Ashraf & Harris, 2004).”
Salt tolerance and salinity effects on plants: a review. (2005, background): “The activities of the antioxidative enzymes such as catalase (CAT), ascorbate peroxidase (APX), guaicol peroxidase (POD), glutathione reductase (GR), and superoxide dismutase increase under salt stress in plants and a correlation of these enzyme levels and salt tolerance exists (Gossett et al., 1994”
Antioxidant responses of shoots and roots of lentil to NaCl-salinity stress (2004, background): “Conversely, as observed in our study, in potato (Benavides et al. 2000) and rice (Lin and Kao 2000) CAT activity did not change under salt stress.”
Selection of callus cultures of sugarcane (Saccharum sp.) tolerant to NaCl and their response to salt stress (2006, background): “1999), barley (Sibi and Fakiri 2000), potato (Benavides et al. 2000) and sunflower (Alvarez et al.”
Response of proline, soluble sugars, photosynthetic pigments and antioxidant enzymes in potato (Solanum tuberosum L.) to different irrigation regimes in greenhouse condition. (2011, background): “Potato responds to drought and salt stresses by accumulating proline which functions as an osmoprotector, osmoregulator and ROS scavenger (Benavides et al., 2000).”