Transcript and protein expression profiles of SEC24 homologues in various tissues. (A) Transcript expression values of SEC24 homologues in uninucleate microspores (UNMS), bicellular pollen (BICP), immature tricellular pollen (TRCP), and mature pollen grains (MPGR) were derived from the microarray experiments of Honys and Twell (2004). Data are expressed relative to the expression of SEC24A in UNMS (=1). (B) Transcript expression values of the SEC24 isoforms in dry pollen (DRYP), pollen germinated in vitro for 30 min (IV30), pollen germinated in vitro for 4 h (IV4H), and pollen tubes harvested after growth through pistil explants (PTPE) were derived from the microarray experiments of Qin et al. (2009). Data are expressed relative to the expression of SEC24B in PTPE (=1). (C) Transcript expression values of the AtSEC24 isoforms in various vegetative tissues including cauline leaves (CLEF), cotyledons (COTY), roots (ROOT), leaf 7 petioles (PETI), hypocotyls (HYPO), 2nd rosette leaves (ROSL), and second internodes of stems (STEM) were derived from the microarray experiments of Schmid et al. (2005). Data are expressed relative to the expression of SEC24B in ROOT (=1).