Table 5.5 Transporters and phytohormones involved in uptake, transport, and assimilation of
mineral nutrients other than NPSK in plants
Mineral
Form
available/
uptake
Transporter and
phytohormones
Comments
References
B
Boric acid
1. Boric acid
channel: NIP5;1/
NIP3;1
2. Boric acid/
Borate exporter:
BOR1-7
1. NOD26-like
intrinsic proteins
(NIP) is involved in
uptake and import of
B
2. BOR1 is involved
in loading B into
xylem
3. Boron is also taken
up though passive
diffusion through lipid
bilayer, and, through
selective and
non-selective ion
channels
Takano et al.
(2002, 2006,
2008), Mosa et al.
(2016), and Reid
(2014)
Ca
Ca
2+
1.
Hyperpolarization
activated Ca2+
channel (HACC)
2. Depolarizationactivated Ca2+
channel (DACC)
3. Ca
2+ permeable
outward rectifying
K+ channel
(KORC)
4. Voltageinsensitive cation
channels (VICC)
5. Ca
2+ -ATPases
6. H
+ /Ca
+
antiporters
1. HACC encoded by
annexin genes
2. DACC encoded by
TPC1
3. KORC encoded by
SKOR and GORK
genes
4. VICC encoded by
CNGC (cyclic
nucleotide-gated) and
GLR (glutamate
receptor homologs)
genes
5. Ca
2+ -ATPases
encoded by ACA8
White and
Broadley (2003),
Thor (2019), and
Demidchik et al.
(2018)
Cl
Cl
À
Voltagedependent
chloride channel
CLC/Chloride
transporter
channel
Cation/Chloride
Cotransporters
(CCCs)
1. CLC-0 was the first
Cl
À transporter from
an electric ray fish,
Torpedo californica ,
and in plants from
N. tabaccum and
A. thaliana
2. Eukaryotic CLC
proteins are
characterized by
presence of two
cystathionine
b-synthetase (CBS)
domains
3. Severn
White and Miller
(1979), Lurin et al.
(1996),
Hechenberger
et al. (1996),
Zifarelli and
Pusch (2010),
Herdean et al.
(2016), and Li
et al. (2017a)
(continued)
5 Plant Roots and Mineral Nutrition: An Overview of Molecular Basis of Uptake and. . . 155