Premium
EFFECT OF POTASSIUM ON PROLINE ACCUMULATION IN CUCUMBER COTYLEDONS
Author(s) -
UDAYAKUMAR M.,
RAO S. RAMA,
PRASAD T. G.,
SASTRY K. S. KRISHNA
Publication year - 1976
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1976.tb04651.x
Subject(s) - proline , potassium , cycloheximide , water content , chemistry , horticulture , cotyledon , botany , biology , biochemistry , amino acid , protein biosynthesis , geotechnical engineering , organic chemistry , engineering
S ummary Free proline accumulation in excised cucumber cotyledons and in leaves of cowpea seedlings increased after treatment of the plants with potassium chloride. In excised cucumber cotyledons there was less K‐induced proline accumulation in the presence of benzyladenine (BA) and free proline disappeared when cotyledons were transferred to BA. Cycloheximide increased the proline content in the tissue when present alone or in combination with BA and/or K. Under simulated water stress, the proline content increased but the increase was greater in cotyledons also treated with KCl. In cowpea seedlings, reduction in relative water content (RWC) under stress was much less in seedlings treated with additional amounts of KCl, and their praline content was also high. There appears to be thus a relationship between K content, praline accumulation and water content of the leaves.