The effect of salts on the viscosity and wilt-inducing capacity of the capsular polysaccharide of Erwinia amylovora
Water solutions of the capsular polysaccharide (EPS) of Erwinia amylovora exhibit long flow times (t) in a kinematic viscometer. Addition of salts to the solutions greatly decreases the flow times. The salt-induced decrease in flow time is directly related to the ionic strength of the solution and i...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English English |
| Published: |
Academic Press
1985
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/40455/1/The%20effect%20of%20salts%20on%20the%20viscosity%20and%20wilt-inducing%20capacity%20of%20the%20capsular%20polysaccharide%20of%20Erwinia%20amylovora.pdf http://psasir.upm.edu.my/id/eprint/40455/7/1-s2.0-0048405985900232-main.pdf |
| _version_ | 1811137443085156352 |
|---|---|
| author | Sijam, Kamaruzaman Goodman, Robert N. Karr, Arthur L. |
| author_facet | Sijam, Kamaruzaman Goodman, Robert N. Karr, Arthur L. |
| author_sort | Sijam, Kamaruzaman |
| collection | UPM |
| description | Water solutions of the capsular polysaccharide (EPS) of Erwinia amylovora exhibit long flow times (t) in a kinematic viscometer. Addition of salts to the solutions greatly decreases the flow times. The salt-induced decrease in flow time is directly related to the ionic strength of the solution and independent of the ionic species present. The salt effect does not result from a change in the molecular weight of the EPS. Addition of NaCl, at concentrations sufficient to reduce the flow time, decreases or eliminates the capacity of EPS solution to cause wilt in the cut shoot assay. Treatment of EPS with either of two depolymerase phages decreases both t and the molecular weight of the EPS (from 100 × 106 D to less than 4 × 104 D). Such phage-produced fragments (ψdp) retain their capacity to cause wilt in the cut shoot assay but, like EPS, lose this ability in the presence of salts. Radiolabeled EPS and ψdp is retained at the end of the cut shoot when wilt occurs but is distributed throughout the shoot when wilt is inhibited by salt. |
| first_indexed | 2024-03-06T08:47:07Z |
| format | Article |
| id | upm.eprints-40455 |
| institution | Universiti Putra Malaysia |
| language | English English |
| last_indexed | 2024-09-25T03:34:22Z |
| publishDate | 1985 |
| publisher | Academic Press |
| record_format | dspace |
| spelling | upm.eprints-404552024-08-08T01:15:42Z http://psasir.upm.edu.my/id/eprint/40455/ The effect of salts on the viscosity and wilt-inducing capacity of the capsular polysaccharide of Erwinia amylovora Sijam, Kamaruzaman Goodman, Robert N. Karr, Arthur L. Water solutions of the capsular polysaccharide (EPS) of Erwinia amylovora exhibit long flow times (t) in a kinematic viscometer. Addition of salts to the solutions greatly decreases the flow times. The salt-induced decrease in flow time is directly related to the ionic strength of the solution and independent of the ionic species present. The salt effect does not result from a change in the molecular weight of the EPS. Addition of NaCl, at concentrations sufficient to reduce the flow time, decreases or eliminates the capacity of EPS solution to cause wilt in the cut shoot assay. Treatment of EPS with either of two depolymerase phages decreases both t and the molecular weight of the EPS (from 100 × 106 D to less than 4 × 104 D). Such phage-produced fragments (ψdp) retain their capacity to cause wilt in the cut shoot assay but, like EPS, lose this ability in the presence of salts. Radiolabeled EPS and ψdp is retained at the end of the cut shoot when wilt occurs but is distributed throughout the shoot when wilt is inhibited by salt. Academic Press 1985-03 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/40455/1/The%20effect%20of%20salts%20on%20the%20viscosity%20and%20wilt-inducing%20capacity%20of%20the%20capsular%20polysaccharide%20of%20Erwinia%20amylovora.pdf text en http://psasir.upm.edu.my/id/eprint/40455/7/1-s2.0-0048405985900232-main.pdf Sijam, Kamaruzaman and Goodman, Robert N. and Karr, Arthur L. (1985) The effect of salts on the viscosity and wilt-inducing capacity of the capsular polysaccharide of Erwinia amylovora. Physiological Plant Pathology, 26 (2). pp. 231-239. ISSN 0048-4059 http://www.sciencedirect.com/science/article/pii/0048405985900232 10.1016/0048-4059(85)90023-2 |
| spellingShingle | Sijam, Kamaruzaman Goodman, Robert N. Karr, Arthur L. The effect of salts on the viscosity and wilt-inducing capacity of the capsular polysaccharide of Erwinia amylovora |
| title | The effect of salts on the viscosity and wilt-inducing capacity of the capsular polysaccharide of Erwinia amylovora |
| title_full | The effect of salts on the viscosity and wilt-inducing capacity of the capsular polysaccharide of Erwinia amylovora |
| title_fullStr | The effect of salts on the viscosity and wilt-inducing capacity of the capsular polysaccharide of Erwinia amylovora |
| title_full_unstemmed | The effect of salts on the viscosity and wilt-inducing capacity of the capsular polysaccharide of Erwinia amylovora |
| title_short | The effect of salts on the viscosity and wilt-inducing capacity of the capsular polysaccharide of Erwinia amylovora |
| title_sort | effect of salts on the viscosity and wilt inducing capacity of the capsular polysaccharide of erwinia amylovora |
| url | http://psasir.upm.edu.my/id/eprint/40455/1/The%20effect%20of%20salts%20on%20the%20viscosity%20and%20wilt-inducing%20capacity%20of%20the%20capsular%20polysaccharide%20of%20Erwinia%20amylovora.pdf http://psasir.upm.edu.my/id/eprint/40455/7/1-s2.0-0048405985900232-main.pdf |
| work_keys_str_mv | AT sijamkamaruzaman theeffectofsaltsontheviscosityandwiltinducingcapacityofthecapsularpolysaccharideoferwiniaamylovora AT goodmanrobertn theeffectofsaltsontheviscosityandwiltinducingcapacityofthecapsularpolysaccharideoferwiniaamylovora AT karrarthurl theeffectofsaltsontheviscosityandwiltinducingcapacityofthecapsularpolysaccharideoferwiniaamylovora AT sijamkamaruzaman effectofsaltsontheviscosityandwiltinducingcapacityofthecapsularpolysaccharideoferwiniaamylovora AT goodmanrobertn effectofsaltsontheviscosityandwiltinducingcapacityofthecapsularpolysaccharideoferwiniaamylovora AT karrarthurl effectofsaltsontheviscosityandwiltinducingcapacityofthecapsularpolysaccharideoferwiniaamylovora |