Toggle Main Menu Toggle Search

Open Access padlockePrints

Expression of dehydration-stress-related genes in the crowns of wheatgrass species [Lophopyrum elongatum (Host) A. Love and Agropyron desertorum (Fisch. ex Link.) Schult.] having contrasting acclimation to salt, cold and drought

Lookup NU author(s): Dr Roger Pearce


Full text for this publication is not currently held within this repository. Alternative links are provided below where available.


Agropyron desertorum and Lophopyrum elongatum were grown in a control environment or acclimated in high-salt (daily exposure to 75 or 150 mM NaCl for 6 d), cold (6/2 °C for 14 d) or drought environments (watering withheld for 6 d). Lophopyrum elongatum was constitutively tolerant to salt and also acclimated more to salt than did A. desertorum whereas A. desertorum acclimated more to cold and drought. Dehydrin and non-specific lipid transfer protein (nsLTP) mRNA sequences and polypeptides increased more, during acclimation to cold and drought, in A. desertorum than in L. elongatum crowns. Expression of immunologically identified dehydrin polypeptides was much higher in drought-acclimated A. desertorum than in any other species/treatment combination. The most strongly expressed were 42 and 20 kDa. No change in dehydrin or nsLTP polypeprides were detected in the crowns during acclimation to salt. Overall, there was stronger acclimation to dehydrative stresses, at the molecular level, in A. desertorum than in L. elongatum crowns. Differences in dehydrin and nsLTP mRNA and polypeptide expression during acclimation to different stresses indicated that plants sense the differences between different primary potential causes of cellular dehydration.

Publication metadata

Author(s): Pearce RS; Tabaei-Aghdaei SR; Harrison P

Publication type: Article

Publication status: Published

Journal: Plant, Cell and Environment

Year: 2000

Volume: 23

Issue: 6

Pages: 561-571

ISSN (print): 0140-7791

ISSN (electronic): 1365-3040

Publisher: Wiley-Blackwell Publishing Ltd.


DOI: 10.1046/j.1365-3040.2000.00572.x


Altmetrics provided by Altmetric