The effect of cold-acclimation on the water relations and freezing tolerance of Hordeum vulgare L
dc.contributor.author | Burchett, S | |
dc.contributor.author | Niven, S | |
dc.contributor.author | Fuller, MP | |
dc.date.accessioned | 2013-03-03T17:28:40Z | |
dc.date.available | 2013-03-03T17:28:40Z | |
dc.date.issued | 2006 | |
dc.identifier.issn | 0143-2044 | |
dc.identifier.uri | http://hdl.handle.net/10026.1/1435 | |
dc.description.abstract |
During a 5 degree C and a 5/-1 degree C cold acclimation (CA) regime there was a significant decline in the water potential of winter barley, and a concurrent decline in tissue water content of the 5/-1 degree C CA plants. Results of carbohydrate analysis illustrated a significant (P < 0.001) accumulation of sucrose, fructose and glucose in the 5/-1 degree C CA plants, which was inversely correlated to water potential. Using an infrared imaging radiometer during a convection frost test the water release time (WRT) of 5/-1 degree C CA was demonstrated to be significantly (P < 0.001) longer than that observed in non-cold acclimated plants. This observation is consistent with visual analysis of exotherm curves where the rate of cellular water release to extracellular ice is reduced in the 5/-1 degree C CA plants, compared to the non-cold acclimated plants. These biochemical and physiological changes were correlated to increased plant health following a non-lethal freezing test to -5 degree C, where non-cold acclimated plants produced 2.3 +/- 0.3 tillers and 5 degree C and 5/-1 degree C CA plants produced 2.4 +/- 0.3 and 4.7 +/- 0.7 tillers, respectively. Results from this study imply that cold acclimation leads to changes in the physical state of water that result in a less osmotically responsive cellular environment and subsequently significantly less damage to meristematic tissue. | |
dc.format.extent | 295-303 | |
dc.format.medium | ||
dc.language | eng | |
dc.language.iso | en | |
dc.subject | water potential | |
dc.subject | water content | |
dc.subject | carbohydrate analysis | |
dc.subject | infrared imaging radiometer | |
dc.subject | water release time | |
dc.title | The effect of cold-acclimation on the water relations and freezing tolerance of Hordeum vulgare L | |
dc.type | journal-article | |
dc.type | Article | |
plymouth.author-url | https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000242713700004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008 | |
plymouth.issue | 5 | |
plymouth.volume | 27 | |
plymouth.publication-status | Published | |
plymouth.journal | Cryoletters | |
plymouth.organisational-group | /Plymouth | |
plymouth.organisational-group | /Plymouth/Faculty of Science and Engineering | |
plymouth.organisational-group | /Plymouth/Faculty of Science and Engineering/School of Biological and Marine Sciences | |
plymouth.organisational-group | /Plymouth/REF 2021 Researchers by UoA | |
plymouth.organisational-group | /Plymouth/REF 2021 Researchers by UoA/UoA06 Agriculture, Veterinary and Food Science | |
plymouth.organisational-group | /Plymouth/Users by role | |
plymouth.organisational-group | /Plymouth/Users by role/Academics | |
dc.publisher.place | England | |
dc.rights.embargoperiod | Not known | |
rioxxterms.licenseref.uri | http://www.rioxx.net/licenses/all-rights-reserved | |
rioxxterms.type | Journal Article/Review |