Resumen:
p style="margin: 0in; font-family: Calibri; font-size: 11pt;">Background and Aims The integrity of actin
filaments (F-actin) is essential for pollen tube growth. In S-RNase-based
self-incompatibility (SI), incompatible pollen tubes are inhibited in the
style. Consequently, research efforts have focused on the alterations of pollen
F-actin cytoskeleton during the SI response. However, so far, these studies
were carried out in in vitro-grown
pollen tubes. This study aimed to assess the timing of in vivo changes of pollen F-actin cytoskeleton taking place
after compatible and incompatible pollinations in Nicotiana
alata. To our knowledge, this is the first report of the in vivo F-actin alterations occurring during
pollen rejection in the S-RNase-based SI system.