<span style="font-size: 21.5pt;mso-bidi-font-size:14.5pt;font-family:"Times New Roman","serif"">Effect of metal ions on growth of <i>Pseudomonas aeruginosa </i>and siderophore and protein production </span>

Abstract

<i><span style="font-size:15.5pt;mso-bidi-font-size:8.5pt;font-family:" times="" new="" roman","serif""="">Pseudomonas aeruginosa </span></i><span style="font-size:15.5pt;mso-bidi-font-size:8.5pt; font-family:" times="" new="" roman","serif""="">(GRC₁<span style="font-size:13.0pt;mso-bidi-font-size:6.0pt;font-family:" arial","sans-serif""=""> ) <span style="font-size:15.5pt;mso-bidi-font-size:8.5pt;font-family: " times="" new="" roman","serif""="">isolated from potato rhizosphere, grew better on succinate medium than tryptic soy medium and produced hydroxamate type of siderophore in iron-deficient succinate medium. When the strain GRC₁<span style="font-size:13.0pt;mso-bidi-font-size:6.0pt;font-family:" arial","sans-serif""=""> <span style="font-size:15.5pt;mso-bidi-font-size:8.5pt;font-family:" times="" new="" roman","serif""="">was grown in the presence of different metal ion compounds, viz. ZnSO₄, MnSO₄, MnCl­₂<span style="font-size:13.0pt; mso-bidi-font-size:6.0pt;font-family:" times="" new="" roman","serif""=""> <span style="font-size:15.5pt;mso-bidi-font-size:8.5pt;font-family:" times="" new="" roman","serif""="">and FeCl_{<span style="font-size:13.0pt;mso-bidi-font-size:6.0pt; font-family:" times="" new="" roman","serif""="">3</span>}<span style="font-size: 13.0pt;mso-bidi-font-size:6.0pt;font-family:" times="" new="" roman","serif""=""> <span style="font-size:15.5pt;mso-bidi-font-size:8.5pt;font-family:" times="" new="" roman","serif""="">at 6 and 12 <i><span style="font-size:16.0pt;mso-bidi-font-size:9.0pt; font-family:" times="" new="" roman","serif""="">μM </span></i><span style="font-size: 15.5pt;mso-bidi-font-size:8.5pt;font-family:" times="" new="" roman","serif""="">concentrations individually, ZnSO₄ (12 <i><span style="font-size:16.0pt; mso-bidi-font-size:9.0pt;font-family:" times="" new="" roman","serif""="">μM) </span></i><span style="font-size:15.5pt;mso-bidi-font-size:8.5pt;font-family:" times="" new="" roman","serif""="">promoted siderophore production but suppressed the growth and protein content of test organism. MnCl_{<span style="font-size:13.0pt;mso-bidi-font-size:6.0pt; font-family:" times="" new="" roman","serif""="">2</span>}<span style="font-size: 13.0pt;mso-bidi-font-size:6.0pt;font-family:" times="" new="" roman","serif""=""> <span style="font-size:15.5pt;mso-bidi-font-size:8.5pt;font-family:" times="" new="" roman","serif""="">and FeCl_{<span style="font-size:13.0pt;mso-bidi-font-size:6.0pt; font-family:" times="" new="" roman","serif""="">3</span>}<span style="font-size: 13.0pt;mso-bidi-font-size:6.0pt;font-family:" times="" new="" roman","serif""=""> <span style="font-size:15.5pt;mso-bidi-font-size:8.5pt;font-family:" times="" new="" roman","serif""="">(12<i><span style="font-size:16.0pt;mso-bidi-font-size:9.0pt;font-family:" times="" new="" roman","serif""="">μM) </span></i><span style="font-size:15.5pt;mso-bidi-font-size:8.5pt;font-family: " times="" new="" roman","serif""="">enhanced the growth, whereas MnCl₂ and MnSO₄ (12 <i><span style="font-size:16.0pt;mso-bidi-font-size: 9.0pt;font-family:" times="" new="" roman","serif""="">μM) </span></i><span style="font-size:15.5pt;mso-bidi-font-size:8.5pt;font-family:" times="" new="" roman","serif""="">induced protein contents of strain GRC₁<span style="font-size:12.5pt; mso-bidi-font-size:5.5pt;font-family:" arial","sans-serif""="">.

</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>