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Are there speciation genes in plants?, : : : - Coggle Diagram
Are there speciation genes in plants?
Chromosomal re-arrangements
Mimulus example
Sunflowers
Cause reproductive isolation
Directly
DMB loci lethal interactions
disease resistance necrosis Dangerous Mix alleles -
Link Title
S loci
Indirectly
Flowering time
FT/FLC alleles flowering time
Pollinator attraction
Flower colour
Petunia
Anthocyanin pathway
Mimulus
YUP- miRNA link
Ecological fitness
Polyploidy
How to polyploids avoid swamping?
Sedges
METHODS
Genome sequencing
Reduced rep. sequencing
Mapping sterilty loci
QTL, NILS
Fst Scans
Speciation gene: single locus which
causes
reproductive isolation
Cause or consequence? Initial isolation or reinforcement
intraspecific polymorphism, consistent with an important role for stochastic forces and/or balancing selection in development of RI in plants.
Anthocyanin pathway and its regulators (pollinator isolation),
S RNase-SI genes (unilateral incompatibility),
Disease resistance genes (hybrid necrosis),
Chimeric mitochondrial genes (cytoplasmic male sterility),
Pentatricopeptide repeat family genes (cytoplasmic male sterility).
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