The role of antioxidant defense in freezing tolerance of resurrection plant Haberlea rhodopensis.

Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology
Katya GeorgievaMaya Velitchkova

Abstract

Haberlea rhodopensis Friv. is unique with its ability to survive two extreme environmental stresses-desiccation to air-dry state and subzero temperatures. In contrast to desiccation tolerance, the mechanisms of freezing tolerance of resurrection plants are scarcely investigated. In the present study, the role of antioxidant defense in the acquisition of cold acclimation and freezing tolerance in this resurrection plant was investigated comparing the results of two sets of experiments-short term freezing stress after cold acclimation in controlled conditions and long term freezing stress as a part of seasonal temperature fluctuations in an outdoor ex situ experiment. Significant enhancement in flavonoids and anthocyanin content was observed only as a result of freezing-induced desiccation. The total amount of polyphenols increased upon cold acclimation and it was similar to the control in post freezing stress and freezing-induced desiccation. The main role of phenylethanoid glucoside, myconoside and hispidulin 8-C-(2-O-syringoyl-b-glucopyranoside) in cold acclimation and freezing tolerance was elucidated. The treatments under controlled conditions in a growth chamber showed enhancement in antioxidant enzymes activity upon cold a...Continue Reading

References

Dec 1, 1984·Analytical Biochemistry·G RicciG Federici
Sep 11, 1998·Plant Physiology·M F Thomashow
Aug 19, 2000·Journal of Experimental Botany·K S GouldJ J Goris
Sep 18, 2002·Trends in Plant Science·Ron Mittler
Mar 12, 2004·Annual Review of Plant Physiology and Plant Molecular Biology·Michael F. Thomashow
Mar 12, 2004·Annual Review of Plant Physiology and Plant Molecular Biology·Graham Noctor, Christine H. Foyer
May 20, 2005·Journal of Plant Physiology·Małgorzata M PosmykFrançoise Corbineau
Feb 6, 2008·Physiologia Plantarum·Sonja Veljovic-JovanovicFlavia Navari-Izzo
Jan 31, 2009·Trends in Plant Science·John P MooreJill M Farrant
Jul 7, 2009·Annual Review of Plant Biology·Zhirong LiKrishna K Niyogi
Jun 8, 2010·Plant, Cell & Environment·Thomas LennéMarilyn C Ball
Sep 28, 2010·Plant Physiology and Biochemistry : PPB·Sarvajeet Singh Gill, Narendra Tuteja
Mar 8, 2011·The New Phytologist·Nicole M Hughes
Apr 23, 2011·Current Opinion in Plant Biology·Jill M Farrant, John P Moore
Oct 15, 2013·Pharmacognosy Magazine·Magdalena Kondeva-BurdinaMitka Mitcheva
Dec 19, 2013·Frontiers in Plant Science·Challabathula Dinakar, Dorothea Bartels
Apr 17, 2014·Physiologia Plantarum·Daniela MoyankovaDimitar Djilianov
Aug 2, 2016·Current Opinion in Plant Biology·Mallikarjuna Rao KoviOdd Arne Rognli
Mar 8, 2017·Plant Physiology and Biochemistry : PPB·Katya GeorgievaSnezhana Doncheva

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