Table II.

Vesicle trafficking genes that are down-regulated in Arabidopsis mutants

Genes enriched or selectively expressed in pollen and down-regulated in flower tissues (including pollen) of both ga1-3 and 35S:miR159a mutants are listed. “Pollen Selective” and “Pollen Enriched” data are from Pina et al. (2005). “Changed in Growth” indicates that gene expression is down- or up-regulated (at least 1.6-fold difference) during tube growth; data are from Wang et al. (2008). “Penta/Wild Type” shows a relative gene expression level in flower tissues (including pollen) of a penta mutant over wild-type Arabidopsis. The penta mutant carries five mutations in which gal1-3 and the members of the DELLA gene family are knocked out (Cao et al., 2006). “HSP90RNAi-A3/Wild Type” shows a relative gene expression level in flower tissues (including pollen) of a hsp90 knockdown line over wild-type Arabidopsis (Sangster et al., 2007). The data of “Penta/Wild Type” and “HSP90RNAi-A3/Wild Type” are from Genevestigator V3 (Hruz et al., 2008). “Reported” indicates that defective pollen tube growth in a knockout line was reported previously (Boavida et al., 2009; Szumlanski and Nielsen, 2009).

Kato Identifier	Family	Annotation	Arabidopsis Genome Initiative No.	Pollen Selective	Pollen Enriched	Changed in Growth	Penta/Wild Type	HSP90RNAi-A3/Wild Type	Reported
1	Rab GTPase	AtRABA1i	AT1G28550	Yes	Yes	No	0.43	5.98	No
1		AtRABA4d	AT3G12160	Yes	Yes	No	0.15	3.86	Yes
1		AtRABH1d	AT2G22290	Yes	Yes	No	0.64	3.73	No
1		AtRABH1e	AT5G10260	No	Yes	No	0.71	0.74	No
3	Aft GAP	AtAGD10	AT2G35210	No	Yes	No	0.53	8.36	Yes
4	Rab GDI	AtRabGDI3	AT5G09550	No	Yes	No	0.55	0.48	No
14	Exocyst	AtEXO70H3	AT3G09530	Yes	Yes	No	0.39	10.55	No
14		AtEXO70C1	AT5G13150	Yes	Yes	No	0.47	3.52	No
14		AtEXO70C2	AT5G13990	Yes	Yes	No	0.61	11.73	No
17	PI enzymes	PIP5K10	AT1G01460	Yes	Yes	No	0.41	2.76	No
18	SNARE	SYP125	AT1G11250	Yes	Yes	No	0.54	1.6	No
18		AtSNAP30	AT1G13890	Yes	Yes	No	0.36	2.05	No
18		SYP131	AT3G03800	Yes	Yes	No	0.59	9.29	No
18		SYP72	AT3G45280	Yes	Yes	No	0.41	2.57	No