Biology Reference
In-Depth Information
Table 5.
Genes expressed in nectary tissues, compiled from published studies that specifically
indicated the expression of these genes in nectary tissues.
Gene
Species
Function
Reference
Nec1
Nicotiana
sp.
Superoxide dismutase
Carter & Thornburg,
2000
Nec2/3
Nicotiana
sp.
MDHR and carbonic
anhydrase
Carter & Thornburg,
2004b
Nec4
Nicotiana
sp.
XEGIP
Naqvi et al., 2005
Nec5
Nicotiana
sp.
Glucose oxidase and DHA
reductase
Carter & Thornburg,
2004c
ALL
Allium porrum
Alliinase
Peumans et al., 1997
MBL
A. porrum
Mannose binding lectin
Peumans et al., 1997
CRC
Arabidopsis
thaliana
CRABS CLAW
transcription
factor
Bowman & Smyth, 1999
LTP1
A. thaliana
Lipid Transfer Protein
Thoma et al., 1994
CRT
A. thaliana
Calcium-binding protein
Nelson et al., 1997
GPa1
A. thaliana
G protein
Weiss et al., 1993
UGD
A. thaliana
UDPG dehydrogenase
Seitz et al., 2000
myb305
Antirrhinum majus
Transcription factor
Jackson et al., 1991
NTR1
Brassica napus
SAM salicylic acid methyl
transferase
Song et al., 2000
MSG
Glycine max
Latex protein
Stromvik et al., 1999
ACP3
Cucumis sativus
ACC oxidase
Kahana et al., 1999
ACO3/4
Petunia hybrida
ACC oxidase
Tang et al., 1994
NEC1
P. hybrida
Unknown
Ge et al., 2000
ADH
P. hybrida
Alcohol dehydrogenase
Garabagi et al., 2005
MTA
Pisum sativum
Metallothionien
Fordham-Skelton et al.,
1997
MEN9
Silene latifolia
Sex-specific expression
Robertson et al., 1997
nectary” on page 269) and the
Nec1
gene from
Petunia
. The
Nec1
protein is
a transmembrane protein that localizes to petunia nectaries. It is highly ex-
pressed in nectaries and much less so in stamens. Its expression is highest in
open flowers that are actively secreting nectar (Ge et al., 2000). Antisense
co-suppression and transposon inactivation of the
Nec1
function yielded pe-
tunia plants with an “early open anther” phenotype.
Nec1
may function in the
anthers in the development of stomium cells, which are ruptured in normal
anther development to release pollen at maturity (Ge et al., 2001).
