Linked Life Data

16663703

Source:http://linkedlifedata.com/resource/pubmed/id/16663703

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2010-6-29
pubmed:abstractText
Using cultured pear (Pyrus communis cv Bartlett) cells, heat tolerance induced by heat shock was compared to that developed during growth at high temperature. After growth at 22 degrees C, cells exposed to 38 degrees C for 20 minutes (heat shock) showed maximum increased tolerance within 6 hours. Cells grown at 30 degrees C developed maximum heat tolerance after 5 to 6 days; this maximum was well below that induced by heat shock. Heat shock-induced tolerance was fully retained at 22 degrees C for 2 days and was only partly lost after 4 days. However, pear cells acclimated at 30 degrees C lost all acquired heat tolerance 1 to 2 days after transfer to 22 degrees C. In addition, cells which had been heat-acclimated by growth at 30 degrees C showed an additional increase in heat tolerance in response to 39 degrees C heat shock. The most striking difference between heat shock and high growth temperature effects on heat tolerance was revealed when tolerance was determined using viability tests based on different cell functions. Growth at 30 degrees C produced a general hardening, i.e. increased heat tolerance was observed with all three viability tests. In contrast, significantly increased tolerance of heat-shocked cells was observed only with the culture regrowth test. The two types of treatment evoke different mechanisms of heat acclimation.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:status
PubMed-not-MEDLINE
pubmed:month
Jul
pubmed:issn
0032-0889
pubmed:author
pubmed:issnType
Print
pubmed:volume
75
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
778-80
pubmed:dateRevised
2010-9-14
pubmed:year
1984
pubmed:articleTitle
Heat Stress Responses in Cultured Plant Cells : Heat Tolerance Induced by Heat Shock versus Elevated Growing Temperature.
pubmed:affiliation
Department of Horticulture, Colorado State University, Fort Collins, Colorado 80523.
pubmed:publicationType
Journal Article