Journal of Experimental Botany, Vol. 54, No. 380, pp. 123-130,
January 1, 2003
© 2003 Oxford University Press
S-RNase complexes and pollen rejection
Received 22 May 2002; Accepted 24 September 2002
1 Department of Biochemistry, Facultad de Química, National Autonomous University of México, Conjunto ‘E’ Paseo de la Investigacio’n Cientifica, Ciudad Universitaria, 04510 México D.F., México
2 Department of Biochemistry, University of Missouri-Columbia, 117 Schweitzer Hall, Columbia, MO 65211, USA
3 To whom correspondence should be addressed. Fax: +1 573 882 5635. E-mail: mcclureb{at}missouri.edu
Biochemical interactions between the pollen and the pistil allow plants fine control over fertilization. S-RNase-based pollen rejection is among the most widespread and best understood of these interactions. At least three plant families have S-RNase-based self-incompatibility (SI) systems, and S-RNases have also been implicated in interspecific pollen rejection. Although S-RNases determine the specificity of SI, other genes are required for the pollen rejection system to function. Progress is being made toward identifying these non-S-RNase factors. HT-protein, first identified as a non-S-RNase factor that was required for SI in Nicotiana alata, has now been implicated in other species as well. In addition, several pistil proteins bind to S-RNase in vitro. One hypothesis is that S-RNase forms a complex with these proteins in vivo that is the active form of S-RNase in pollen rejection.
Key words: Interspecific incompatibility, pollen–pistil interactions, self-incompatibility, S-locus, S-RNase.
CiteULike 
Connotea 
Del.icio.us What's this?
This article has been cited by other articles:
|
|
 |
|
  J. I. Mena-Ali and A. G. Stephenson Segregation Analyses of Partial Self-Incompatibility in Self and Cross Progeny of Solanum carolinense Reveal a Leaky S-Allele Genetics, September 1, 2007; 177(1): 501 - 510. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. L. Stone, M. A. Sasuclark, and C. P. Blomberg Variation in the self-incompatibility response within and among populations of the tropical shrub Witheringia solanacea (Solanaceae) Am. J. Botany, April 1, 2006; 93(4): 592 - 598. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 A. N. ONUS and B. PICKERSGILL Unilateral Incompatibility in Capsicum (Solanaceae): Occurrence and Taxonomic Distribution Ann. Bot., August 1, 2004; 94(2): 289 - 295. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 A. M. Sanchez, M. Bosch, M. Bots, J. Nieuwland, R. Feron, and C. Mariani Pistil Factors Controlling Pollination PLANT CELL, June 1, 2004; 16(suppl_1): S98 - S106. [Full Text] [PDF]
|
|
|
|
|
|
T.-h. Kao and T. Tsukamoto The Molecular and Genetic Bases of S-RNase-Based Self-Incompatibility PLANT CELL, June 1, 2004; 16(suppl_1): S72 - S83. [Full Text] [PDF]
|
|