Table 4.
Genera and plant growth promoting (PGP) traits of the selected endophytes.
| Straina | Genus | IAA Production | Salt tolerance (7% NaCl) | Phosphate solubilization | nifH gene | Nitrogenase activity (nmol C2H4 plants−1 min−1) |
|---|---|---|---|---|---|---|
| BA1 | Bacillus | - | + | - | - | - |
| BA2 | Paenibacillus | - | - | - | - | - |
| BA3 | Bacillus | + | ++ | - | + | + |
| BA5 | Bacillus | + | + | - | - | - |
| BA7 | Bacillus | - | + | - | - | - |
| BA8 | Paenibacillus | - | - | - | - | - |
| BA11 | Bacillus | + | + | - | + | + |
| BA14 | Bacillus | - | + | - | - | - |
| BA18 | Bacillus | - | ++ | + | - | - |
| BA20 | Pseudomonas | - | - | - | - | - |
| BA21 | Paenibacillus | - | - | + | - | - |
| BA22 | Paenibacillus | - | - | ++ | - | - |
| BA26 | Staphylococcus | + | - | ++ | - | - |
| BA27 | Bacillus | - | + | - | - | - |
| BA29 | Bacillus | + | - | - | - | - |
| BA30 | Bacillus | - | ++ | - | - | - |
| BA38 | Bacillus | - | + | - | - | - |
| BB1 | Chryseobacterium | - | - | - | - | - |
| BB4 | Acinetobacter | - | - | - | - | - |
| BB11 | Chryseobacterium | + | - | - | - | - |
| BB14 | Chryseobacterium | - | - | - | - | - |
| BB17 | Paenibacillus | + | - | + | - | - |
| BB18 | Chryseobacterium | - | - | - | - | - |
| BB20 | Acinetobacter | - | - | - | - | - |
| BB22 | Bacillus | - | + | - | - | - |
| BB24 | Bacillus | - | + | - | - | - |
| BB27 | Kosakonia | - | - | - | + | + |
| BB30 | Bacillus | - | - | - | - | - |
| BB35 | Kosakonia | - | - | - | + | + |
| BB39 | Kosakonia | - | - | - | + | + |
| BB40 | Phytobacter | + | - | - | - | - |
| BC1 | Enterobacter | + | - | - | - | - |
| BC2 | Enterobacter | + | - | - | - | - |
| BC3 | Enterobacter | + | - | - | - | - |
| BC5 | Enterobacter | + | - | - | - | - |
| BC6 | Enterobacter | + | - | - | - | - |
| BC14 | Enterobacter | + | + | - | - | - |
| BC19 | Enterobacter | + | - | - | - | - |
| BC20 | Enterobacter | + | - | - | - | - |
| PA5 | Kosakonia | - | - | + | + | + |
| PA6 | Kosakonia | - | - | - | + | + |
| PA12 | Kosakonia | - | - | - | + | + |
| PA13 | Kosakonia | - | - | - | + | + |
| PA15 | Kosakonia | - | - | - | + | + |
| PA18 | Chromobacterium | + | - | - | - | - |
| PA20A | Paenibacillus | + | - | + | + | + |
| PA20B | Staphylococcus | + | - | + | + | + |
| PA21 | Kosakonia | - | - | - | + | + |
| PA26 | Kosakonia | - | - | - | + | + |
| PA29 | Kosakonia | - | - | - | + | + |
| PA35 | Kosakonia | - | - | - | + | + |
| PA38 | Chromobacterium | + | - | - | - | - |
| PA40 | Kosakonia | - | - | - | + | + |
| PB8 | Kosakonia | - | - | - | + | + |
| PB24 | Kosakonia | + | - | - | + | + |
| PC19 | Kosakonia | - | - | - | + | + |
| PC20 | Pseudomonas | - | + | - | - | - |
+, positive response; -, negative response.
a
The first letters in the name of the strains indicate the plant of origin, i.e. “B” means strain isolated from ‘Baldo’ and “P” means strain isolated from ‘Primadur’, while the second letter refers to the biological replicates (A, B, and C).