Pectin esterases (PE, EC 3.1.1.11) catalyse the demethylation of pectin. As a result of its activity, structural interactions among cell wall components during cell wall turnover and loosening are affected. In plants, PEs are typically encoded by a gene family. This family has been studied in strawberry (Fragaria x ananassa Duch.) in order to investigate the role of distinct PE genes during fru...

Changes of superoxide(O ) and hydrogen peroxide(H O ), malondialdehyde(MDA) contents and 2 2 2 activities of enzymes involving cell defense in leaves of strawberry (Fragaria×ananassa Duch) plantlets under different time of low temperature stress were studied. With the increase of stress times, the rates of O2 generation and contents of H O increased to a certain degree and then decreased. The M...

Changes in fruit quality, decay, phenolic and anthocyanin content, and antioxidant capacity of strawberries (Fragaria ananassa Duch. cv. Allstar) stored under air and high oxygen atmospheres at 5 1C were investigated. Freshly harvested strawberries were placed in jars and ventilated continuously with air or with 40, 60, 80, or 100 kPa O2 at 5 1C for up to 14 days. Samples were taken initially, ...

The pattern of polypeptides at different stages of strawberry (Fragaria ananassa Duch. cv Ozark Beauty) fruit development was studied by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. An 81,000-dalton polypeptide appeared between 5 and 10 days after pollination. Polypeptides with molecular weights of 76,000 and 37,000 daltons were formed after 10 days. The control exerted by auxin i...

The effects of daylength and temperature on flowering of the cultivated octoploid strawberry (Fragaria × ananassa Duch.) have been studied extensively at the physiological level, but information on the molecular pathways controlling flowering in the species is scarce. The flowering pathway has been studied at the molecular level in the diploid short-day woodland strawberry (F. vesca L.), in whi...