Chinese Bulletin of Botany ›› 2008, Vol. 25 ›› Issue (02): 139-148.

• 综述 • Previous Articles     Next Articles

Comparison of Germination Between Fern Spores and Spermatophyte Pollen

Shaojun Dai1, 2*, Jing Gao1, Hongfei Mu1, Yingying Song1   

  1. 1College of Life Sciences, Northeast Forestry University, Harbin 150040, China; 2College of Life and Environmental Sciences, Harbin Normal University, Harbin 150080, China
  • Received:2007-08-22 Revised:2007-09-29 Online:2008-03-01 Published:2008-03-01
  • Contact: Dai Shaojun

Abstract: Fern spores and spermatophyte pollen have major roles in plant sex reproduction. As the male gametophyte, pollen delivers sperm to the embryo sac for fertilization by pollen-tube polarized growth. The fern spore, the original cell of the gametophyte, carries out asymmetrical mitosis to produce a large cell and a small cell. The small cell geminates to a rhizoid by tip growth, and the large cell further divides and develops to become a prothallus( the fern gametophyte). Fern spores and pollen are metabolically quiescent cells, and their germination is affected by various environmental factors. Moreover, the germination of fern spores and pollen probably has similar molecular regulated mechanisms in cell division, polarity establishment and energy metabolism. This paper gives an overview of the different and conserved features of fern spores and spermatophyte pollen germination.