Table 5.5 (continued)
Mineral
Form
available/
uptake
Transporter and
phytohormones
Comments
References
homologues, CLCaCLCg, are present in
A. thaliana genome;
rice has five
homologues
4. A.thaliana CLCa,
and CLCe are
selective towards
NO 3
À ion, whereas
CLCc has dual affinity
for Cl
À and NO 3
À
5. CCC may retrieve
Cl from the root
xylem
Cu
Cu
+ , Cu
2+
1. Copper
transporter protein
(COPT) family
(high affinity
transporter)
2. P 1B -type
ATPase
transporters
3. ZIP family
4. ATX family
5. CCS family
6. COX family
7. Yellow stripelike 1 (YS1)
family
8. H+/Cu2+
antiporters
1. Being a
micronutrient, Cu is
required in small
amount and excess of
Cu causes
phytotoxicity
2. Ferric reductase
(FRO) converts Cu
2+
to Cu
+ in soil which is
then taken up by
COPT
3. COPT1 is
responsible for uptake
of Cu
+ whereas ZIP2
and YSL are
speculated to take up
Cu
2+
4. P 1B -type ATPase
transporters are
involved in transport
of a range of ions such
as Cu
+ , Cu
2+ , Zn
2+ ,
Cd
2+ and Pb
2+
5. ATX, CCS and
COX are chaperone
proteins
6. Members of YSL
family are part of OPT
(oligopeptide
transporter)
superfamily and
function as Cu
2+ -
Nicotinamine (NA;
phytosiderophore)
Kampfenkel et al.
(1995), Yruela
(2009), Printz
et al. (2016),
Migocka and
Malas (2018), and
Puig (2014)
(continued)
156
E. Bhardwaj et al.