Improved tolerance toward low temperature in banana (Musa AAA Group Cavendish Williams)

• Authors : Zhang, J.Z.; Zhang, Q.; Chen, Y.J.; Sun,L.L.; Song, L.Y.; Peng, C.L.


• Document type : Journal article


• Year of publication : 2012


• Journal title : South African Journal of Botany


• Number : 78




• Pages : 290-294


• Peer-reviewed : Yes


• ISSN : 0254-6299


• Language(s) : English


• Abstract : To further understand the physiological mechanisms of cold-tolerance in banana plants, the responses of four introducing cultivars (cv.) W811 (via long-term cold adaptation), PB, BJ10 and BJ11 to low-temperature stress (LT) were investigated. LT caused increased malondialdehyde (MDA) content, elevated contents of hydrogen peroxide (H2O2) and superoxide radical (O2−), and decreased photochemical efficiency (Fv/Fm) and net photosynthetic rate (Pn) in the leaves of four banana cultivars, but cv. W811 showed better LT tolerance than the other three cultivars. After 72 h of LT, four key antioxidative enzymes in the four cultivars showed different responses. Compared to controls, superoxide dismutase (SOD) activities in the four cultivars showed a significant decrease and W811 had the smallest amount of decrease. Catalase (CAT) activities showed a significant decrease. Peroxidase (POD) activities kept relatively higher activities and showed no significant changes (P > 0.05) in W811, BJ10 and BJ11 whereas that in PB showed a significant increase (P < 0.001). Ascorbate peroxidase (APX) activities in W811 and PB showed no significant changes (P > 0.05). Our results showed that higher cold-tolerance in cv. W811 may correlate with the long-term cold adaptation of the antioxidative enzymes such as SOD, POD and APX that alleviate oxidative stress caused by LT.
  Highlights
  • Four banana cultivars including W811 (via long-term cold adaptation) were studied.
  • Relationship between cold-tolerance and long-term cold adaptation was investigated.
  • It can promote banana productivity via cultivating cold-resistant variety.
  • Cold-tolerance may be related to long-term cold adaptation of antioxidant enzymes.


• Keywords : COLD; TEMPERATURE RESISTANCE; PEROXIDASES; PHOTOSYNTHESIS; CATALASE; SUPEROXIDE DISMUTASE; HYDROGEN PEROXIDE


• Open access : Yes


• Document on publisher's site : View article on publisher's site


• Musalit document ID : IN120039

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