Winter rye antifreeze activity increases in response to cold and drought, but not abscisic acid

Physiologia Plantarum
Xiao-Ming Yu, Marilyn Griffith

Abstract

Antifreeze activity increases in winter rye (Secale cereale L.) during cold acclimation as the plants accumulate antifreeze proteins (AFPs) that are similar to glucanases, chitinases and thaumatin-like proteins (TLPs) in the leaf apoplast. In the present work, experiments were conducted to assess the role of drought and abscisic acid (ABA) in the regulation of antifreeze activity and accumulation of AFPs. Antifreeze activity was detected as early as 24 h of drought treatment at 20 degrees C and increased as the level of apoplastic proteins increased. Apoplastic proteins accumulated rapidly under water stress and reached a level within 8 days that was equivalent to the level of apoplastic proteins accumulated when plants were acclimated to cold temperature for 7 weeks. These drought-induced apoplastic proteins had molecular masses ranging from 11 to 35 kDa and were identified as two glucanases, two chitinases, and two TLPs, by using antisera raised against cold-induced rye glucanase, chitinase, and TLP, respectively. Apoplastic extracts obtained from plants treated with ABA lacked the ability to modify the growth of ice crystals, even though ABA induced the accumulation of apoplastic proteins within 4 days to a level similar to ...Continue Reading

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Citations

Oct 16, 2002·Biochemical and Biophysical Research Communications·Michiya KoikeRyozo Imai
Nov 6, 2003·Phytochemistry·Okkeş Atici, Barbaros Nalbantoglu
Mar 7, 2008·Critical Reviews in Biotechnology·S Venketesh, C Dayananda
May 18, 2013·Journal of Basic Microbiology·Jian LiShihong Zhang
Apr 28, 2010·Proteomics·Charles GouletDominique Michaud
Sep 11, 2004·Trends in Plant Science·Marilyn Griffith, Mahmoud W F Yaish
Nov 9, 2010·Journal of Theoretical Biology·Krishna Kumar KandaswamyGanesan Pugalenthi
Mar 13, 2012·International Journal of Molecular Sciences·Xiaowei ZhaoMinghao Yin
Jan 24, 2017·IEEE/ACM Transactions on Computational Biology and Bioinformatics·Shujaat KhanMohammed Bennamoun
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Apr 5, 2005·Plant Physiology·Marilyn GriffithAlejandro G Marangoni
May 4, 2004·Plant Physiology·Maja StressmannAlejandro G Marangoni

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