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Table 2 Relevant genes of the accessory genome related to symbiotic interaction

From: Exploring the symbiotic pangenome of the nitrogen-fixing bacterium Sinorhizobium meliloti

Orthologous group(s)*

Gene or Protein Name

Strain(s)

Copies

Phenotype***

Species****

NodMutID

Microaerophilic gene set

      

5488

fixK-like

Rm1021/BL225C

4

Nod+Fix-

B. japonicum USDA110

924-5

5305, 5324, 5377, 5379

fixNOQP 3

Rm1021/BL225C

3

Nod+Fix-

B. japonicum USDA110

933-950

5327, 5300, 5361, 5326, 5378

norBCDEQ

Rm1021/BL225C

1

Nod+-

B. japonicum USDA110

921

5432, 5427, 5508, 5586, 5502, 5567, 5554

nosRZDFYLX

Rm1021/BL225C

1

Nod+Fix+

B. japonicum USDA110

1075

5498, 5537

nirKV

Rm1021/BL225C

1**

Nod+-

B. japonicum USDA110

922

5298, 5394, 5563

nnrRSU

Rm1021/BL225C

1**

N2metabolism

S.meliloti JJ1c10

---

5441, 5485, 5583

nrtABC

Rm1021/BL225C

1**

N2metabolism

S.meliloti Rm1021

---

7166

cycB 2

Rm1021

2

Not known

S. meliloti Rm1021

---

5391

hemN

Rm1021/BL225C

1

Not known

S. meliloti JJ1c10

---

Others

      

5422

Symbiosis-related SDR

Rm1021/BL225C

1

Nod+Fix+-

S. meliloti Rm1021

1310

6532

nwsB

BL225C

1

Nod+-

B. japonicum USDA110

911, 1015, 1019

5532, 5338, 5424, 548, 5381, 5346, 5437, 5522

rhbABCDE, rhtAX, rhrA

Rm1021/BL225C

1**

Nod+Fix+-

S. meliloti Rm1021

---

5832

acdS

AK83/BL225C

1

Nod+-

Several rhizobial species

---

5635

fixKweakhomolog

AK83/BL225C

4

Nod+Fix-

B.japonicum USDA110

924-5

7649

nodQ 1

Rm1021/AK83

2

Nod+-

S. meliloti Rm1021

104, 119, 134-7, 618, 629

6799

fixT 3

Rm1021

7

Not known

S. meliloti Rm1021

---

6905

nodP 2

Rm1021

2

Host

S. meliloti Rm1021

---

7041

fixT 2

Rm1021

7

Nod+Fix+

S. meliloti Rm1021

685

7042

fixK 2

Rm1021

4

Nod+Fix-

S. meliloti Rm1021

489

5593

C P450

AK83/BL225C

3

Nod+Fix+

B. japonicum USDA110, Rhizobium sp. BR816

---

7427

hupE

AK83

1

Nod+Fix+

A. caulinodans ORS571

---

5770

hemA homolog

AK83/BL225C

1

Nod+Fix+-

B. japonicum USDA110

---

6640

Pcs distant homolog

BL225C

2

Host

Several bacterial species

---

7666

CTP:phosphocholinecytidylyltransferase

AK83

1

Host

Several bacterial species

---

7766

Cadherin-likeprotein

AK83

1

Host

R. leguminosarum bv.viciae

---

6766

cgmB

Rm1021

1

Host

S. meliloti Rm1021

---

6835

expR (fragment)

Rm1021

1

Not known

S. meliloti Rm1021

---

5551

Sugar isomerase

Rm1021/BL225C

1

Host

S. meliloti Rm1021

---

3183

nodM (AK83)

AK83

2

Host

S. meliloti Rm1021

---

Not characterized

      

6353

napC/nirT-like

BL225C

1

N2metabolism

Several rhizobial species

---

8184

glnA-like

AK83

9

N2metabolism

Several rhizobial species

---

5573

fixS2

Rm1021/BL225C

2

Not known

S. meliloti Rm1021

---

5936

fixO-like

AK83/BL225C

2

Not known

Several rhizobial species

---

5950

fixT1-like

AK83/BL225C

7

Not known

Several rhizobial species

---

6498

fixT-like

BL225C

7

Not known

Several rhizobial species

---

7148

fixL-related

Rm1021

2

Not known

S. meliloti Rm1021

---

  1. See text and Figure S1 for details of the searching procedure.
  2. * See Table S1 for the accession numbers of the single proteins belonging to each group
  3. ** One or more genes are present in more than one copy
  4. *** Host: recognition, communication and invasion of a host plant; Nod: nodulation phenotype; Fix: nitrogen fixation and plant growth promotion phenotype; + positive phenotype; +- slightly reduced phenotype; - absent phenotype
  5. **** Organism in which the function of a specific protein or operon was elucidated