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Table 3 Functional prediction of AAT genes in foxtail millet based on homology relationship, expression pattern and previous studies

From: Amino acid transporter (AAT) gene family in foxtail millet (Setaria italica L.): widespread family expansion, functional differentiation, roles in quality formation and response to abiotic stresses

Subfamilies

AATs in foxtail millet

expression organizationa

Possible biological processes

Previous studies

AAP

SiAAP7;

GS;

The intake of amino acid in endosperm and embryo development;

AtAAP8,1 [23, 58];

SiAAP1,5,13;

R,ST;

Amino acid absorption in root and transport in stems;

AtAAP7,1 [19];

SiAAP2,10,9;

GS,SP,G

Play a role in early embryo development and formation of floral organs and grain quality;

AtAAP8,1,VfAAP1,OsAAP6 [4, 6, 7];

SiAAP3,8,12,14

LS,LV, G

Participate in the transport and distribution of amino acids in leaf and grain formation;

 

SiAAP4,15,19,20

ST,LS,LV

Participate in the transfer and distribution of amino acids from stems to leaf

HvAAP3,AtAAP7 [25];AtAAP2,3,6,OsAAP8,15;HvAAP2,6 [8, 12, 20, 21]

GAT

SiGAT3;

LS,LV,L,SP

Maintain cell ion balance under normal conditions;

AtGAT1 [44]

SiGAT6

R,ST,LS,SP

Amino acid absorption in root and long-distance transportation of GABA

ProT

SiProT1

ST,L,GS

Participate in the long-distance transport of proline and regulate the distribution of proline in leaf

AtProT1,AtProT3 [5, 38]

LHT

SiLHT11

R;

Amino acid uptake in root;

AtLHT1,9 [28, 59]

SiLHT2,5,10

L;

Transport and distribution of amino acids in leaf;

SiLHT9

LS,ST,R

Long-distance transportation of amino acids from root to leaf

AUX

SiAUX1;

ST,R;

Participate in the geotropism of root and the transport of auxin in the stem;

AtAUX1 [32,33,34];

SiAUX2,3,4;

SP; G

Participate in spikelet development and grain formation

OsAUX1,StAUX [10, 12]

ANT

SiANT1;

ST,R,LS,LV;

Participate in long-distance transportation of amino acids;

AtANT1 [31]

SiANT2

SP,G,GS

Participate in seed germination, spike differentiation and grain formation

ATLa

SiATLa1;

GS,SE;

Participate in seed germination;

NA

SiATLa3,4,5;

ST,LS,LV,R,SP;

Participate in long-distance transportation of amino acids;

SiATLa6

L,SP

Regulate the distribution of amino acids in leaf and Participate in spike differentiation

ATLb

SiATLb3,6,10,13;

GS,SE,SP,G;

Participate in seed germination, spike differentiation and grain formation;

NA

SiATLb1;

R,ST,LV;

Long-distance transportation of amino acids from root to leaf;

SiATLb7;

GS;

Participate in seed germination;

SiATLb8;

ST,LS,LV

Long-distance transportation of amino acids from stem to leaf;

CAT

SiCAT10

GS

Participate in seed germination;

NA

SiCAT3, 5, 6, 8, 9

GS, ST, R, L

Participate in long-distance transportation of amino acids;

SiCAT7

SP

Specific influence on spike differentiation;

SiCAT11, 12

SP, L

Participate in spikelet formation and amino acid transport and distribution in leaves

ACT

SiBAT1, 2, 7

ST, L, SP

Participate in spikelet formation and long-distance transportation of amino acids

NA

PHS

SiLAT1, 2, 5

GS, SP, G;

Participate in seed germination, spike differentiation and grain formation;

NA

SiLAT3

GS, LS, LV, ST, R

Participate in spikelet formation and long-distance transportation of amino acids

TTP

SiTTP1

SE, SP

Affect seedling growth and spikelet differentiation

NA

  1. aGS Germinated seed, R Root, ST Stem, SP Spikelet, G Grain, SE Seedling, L Leaf, LV Leaf Vein, LS Leaf Sheath