e-journal

Antibacterial Activity of Pseudoalteromonas in the Coral Holobiont

---

Abstract
Corals harbor diverse and abundant prokaryotic populations. Bacterial communities residing in the coral
mucus layer may be either pathogenic or symbiotic. Some species may produce antibiotics as a method of controlling populations of competing microbial species. The present study characterizes cultivable Pseudoalteromonas sp. isolated from the mucus layer of different coral species from the northern Gulf of Eilat, Red Sea, Israel. Six mucusassociated Pseudoalteromonas spp. obtained from different
coral species were screened for antibacterial activity against 23 tester strains. Five of the six Pseudoalteromonas strains demonstrated extracellular antibacterial activity against Gram-positive—but not Gram-negative—tester strains. Active substances secreted into the cell-free supernatant are
heat-tolerant and inhibit growth of Bacillus cereus, Staphylococcus aureus, and of ten endogenous Gram-positive marine bacteria isolated from corals. The Pseudoalteromonas spp. isolated from Red sea corals aligned in a phylogenetic tree with previously isolated Pseudoalteromonas spp. of marine origin that demonstrated antimicrobial activity. These results suggest that coral mucus-associated seudoalteromonas may play a protective role in the coral holobiont's defense against potential Gram-positive coral pathogens.

---

Ketersediaan

Tidak ada salinan data

Informasi Detail

Judul Seri

Microbial Ecology (2012) 64:851–859

No. Panggil

-

Penerbit

: Springer Science Business Media., 2012

Deskripsi Fisik

-

Bahasa

English

ISBN/ISSN

1432-184X

Klasifikasi

-

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subjek

EKOLOGI
MIKROBIOLOGI

Info Detail Spesifik

-

Pernyataan Tanggungjawab

ETY

Versi lain/terkait

Lampiran Berkas

Komentar

---

Anda harus masuk sebelum memberikan komentar