บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Biochemical and molecular aspects of calcium action.

Poovaiah, B. W.;

Acta Horticulturae Year: 1993 Issue: No. 326 Pages: 139-147 Ref: 43 ref.

1993

บทคัดย่อ

Attempts at predicting storage ability of apples.

Accumulating evidence indicates that Ca2+ acts as a messenger in signal transduction in plants. Many signal-induced responses are mediated by Ca2+. Increased Ca2+ in the cytoplasm can affect diverse physiological processes through the action of calmodulin, a ubiquitous Ca2+-binding protein. Much of this diversity in response in plants is believed to be achieved by the modulation of the activity of Ca2+ and/or Ca2+-calmodulin-dependent protein kinases. In addition to the role of Ca2+ as a cellular messenger, it has long been known to confer rigidity to cell walls. Of special interest is the effect of Ca2+ on various parameters of senescence in plant organs such as fruits. Apple fruits are particularly sensitive to low tissue Ca2+ content and are susceptible to a number of physiological disorders. Ca2+ treatments have been shown to reduce the occurrence of several physiological disorders including senescent breakdown. This review outlines the ubiquitous and pivotal role of Ca2+ in plant growth and development. Ca2+/calmodulin-dependent protein phosphorylation and its role in signal transduction are emphasized. Effects of Ca2+ treatment on various parameters of cell function in Golden Delicious apples are tabulated.