Table I.

List of the wild-type and o2 mutant alleles present in the various genetic backgrounds

Genetic Background	Wild-Type and o2 Allelesa	Abbreviationsb	Presence of o2 Transcriptc	o2 Cellular Locationd	Stock/Referencee
W64A	O2w1	W+			1fg
	o2T	Wo2T	Yes	Cytoplasm	1,3fgh
A69Y	O2w3	Y+			1fg
	o2It	Yo2It	Yes	Nuclear	1fgi
	o2T	Yo2T	Yes	Cytoplasm	6fgh
	o2-676	Y676	Yes	Nuclear	6jk
	o2R	Yo2R	No		6gh
W22	O2w2	X+			1,4fgl
	o2It	Xo2It	Yes	Nuclear	1fgi
	o2-676	X676	Yes	Nuclear	4jk
	o2R	Xo2R	No		4gh
Bianchi	o2It	Bo2	Yes	Nuclear	2g
NYR	O2w3	N+
	o2It	No2It	Yes	Nuclear	2g 2fg
3316	O2w3	33+			2g
	o2It	33o2It	Yes	Nuclear	2gi
Oh43	O2w1	Oh+			4,5g
	o2-676	Oh676	Yes	Nuclear	4jk
	o2R	Oho2R	No		4,5gh
B37	O2w1	37+			3g
	o2R	37o2R	No		3
B14	O2w3	14+			3g
	o2R	14o2R	No		3
Rossman	o2R	Ro2R	No		2fg
R802	ndm	802+	No		4j
	o2R	802o2R			4j
Mo17	O2w3	Mo+			3g
	o2R	Moo2	No		3g

^a The wild-type and mutant alleles occurring in the various GBs are reported. 

^b For convenience each line was abbreviated as reported. 

^d These columns report, respectively, the occurrence of o2 transcripts and the relative o2 cellular location deduced from the references reported in the last column and from unpublished data (B. Lazzari). 

^e Report of the nos. of the laboratories and centers from which the various lines have been obtained as listed in the “Materials and Methods” of Bernard et al. (1994). No. 6 identifies the Istituto Biosintesi Vegetali in which the introgression into the A69Y of the o2T, from W64Ao2T, and the o2-676 and o2R alleles from the Oh43 GB was obtained by six backcrosses. 

^fDolfini et al. (1992). 

^gBernard et al. (1994). 

^hLazzari et al. (1994). 

ⁱLazzari et al. (1995). 

^jAukerman et al. (1991). 

^kVaragona and Raikhel (1994). 

^lSchmidt et al. (1987). 

^mnd, Not determined.