J Integr Plant Biol. ›› 1999, Vol. 41 ›› Issue (10): -.

• Research Articles •    

The Role of Calcium in the Fertilization Process in Flowering Plants

YANG Hong-Yuan   

Abstract: The fertilization process in flowering plants in a broad sense includes a progamic phase preceding the phase of double fertilization. To our present knowledge, calcium as a second messenger in the signal transduction plays important roles in all the links of this process. The present review attempts to highlight the recent advances in this research field, including: calcium in relation to in vitro pollen tube growth (distribution of calcium in pollen tube tip; regulation of pollen tube growth by calcium; calcium oscillation in pollen tube); distribution of calcium in pistil and its relation to in vivo pollen tube growth (calcium in relation to pollen-pistil recognition; pollen tube growth in pistil; pollen tube entry into embryo sac and the discharge and transportation of sperms); and calcium in relation to sperm-egg fusion and egg cell activation. In conclusion the author summarizes into several main view points, and gives recommendation for further researches on this topic.

Key words: Plant, Fertilization, Calcium, Developmental biology, Reproductive biology

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