An aquaporin-like gene required for the Brassica self-incompatibility response.
Self-incompatibility in Brassica refers to the rejection of self-related pollen and is mediated by a receptor protein kinase localized to the plasma membrane of the stigma epidermis in the flower. The recessive mutation mod eliminates self-incompatibility in the stigma. In mod mutants, self-compatibility was shown to be associated with the absence of transcripts encoded by an aquaporin-related gene. This observation suggests that a water channel is required for the self-incompatibility response of Brassica, which is consistent with the concept that regulation of water transfer from the stigma to pollen is a checkpoint in the early events of pollination in the crucifer family.
Ikeda
S
S
Section of Plant Biology, Division of Biological Sciences, Cornell University, Ithaca, NY 14853, USA.
Nasrallah
J B
JB
Dixit
R
R
Preiss
S
S
Nasrallah
M E
ME
D000595:Amino Acid Sequence; D001937:Brassica / Q000235:genetics / Q000502:physiology*; D017343:Genes, Plant; D007473:Ion Channels / Q000235:genetics / Q000502:physiology*; D008969:Molecular Sequence Data; D010940:Plant Proteins / Q000235:genetics / Q000502:physiology*; D011058:Pollen; D012098:Reproduction; D014867:Water / Q000502:physiology
D007473:Ion Channels; C106143:MOD protein, Brassica rapa; D010940:Plant Proteins; D014867:Water