Abstract:
:The conversion of proline to glutamic acid and hence to other soluble compounds (proline oxidation) proceeds readily in turgid barley (Hordeum vulgare) leaves and is stimulated by higher concentrations of proline. This suggests that proline oxidation could function as a control mechanism for maintaining low cellular levels of proline in turgid tissue. In water-stressed tissue, however, proline oxidation is reduced to negligible rates. These results are consistent with the idea that proline accumulation results from inactivation by water stress of normal control mechanisms. It seems likely that inhibition of proline oxidation is necessary in maintaining the high levels of proline found in stressed barley leaves.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Stewart CRdoi
10.1104/pp.59.5.930subject
Has Abstractpub_date
1977-05-01 00:00:00pages
930-2issue
5eissn
0032-0889issn
1532-2548journal_volume
59pub_type
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