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Sucrose and fructan metabolism of different wheat cultivars at chilling temperatures
Author(s) -
Tognetti J. A.,
Salerno C. L.,
Crespi M. D.,
Pontis H. G.
Publication year - 1990
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1990.tb05241.x
Subject(s) - fructan , sucrose , sucrose phosphate synthase , cultivar , sucrose synthase , biology , subtropics , horticulture , botany , poaceae , invertase , metabolism , freezing tolerance , food science , biochemistry , ecology , gene
Four wheat ( Triticum aestivum L.) varieties cultivated in different climates from subtropics to North Patagonia were used to study sucrose and fructan metabolism in plants when submitted to a cold period. Higher levels of sugars were found in the more cold tolerant cultivars. Sucrose synthase (EC 2.4.1.13) and sucrose phosphate synthase (EC 2.4.1.14) activities showed a 2–3 fold increase when plants were grown at 4°C for 10 days. The more cold‐tolerant wheat cultivars also showed the higher levels of enzyme activities. These metabolical changes were not due to anatomical or morphological differences produced during growth at 4°C