A bacterial pathogen infecting gametophytes of Saccharina japonica(Laminariales,Phaeophyceae)  

作　　者：彭艳婷 李伟 

机构地区：[1]College of Marine Life Science,Ocean University of China [2]Key Laboratory of Experimental Marine Biology,Institute of Oceanology,Chinese Academy of Sciences

出　　处：《Chinese Journal of Oceanology and Limnology》2013年第2期366-373,共8页中国海洋湖沼学报（英文版）

基　　金：Supported by the Shandong Postdoctoral Science Foundation Funded Project(No.2009003027);the National Natural Science Foundation of China(No.31100010);the Key Laboratory of Experimental Marine Biology of Institute of Oceanology,Chinese Academy of Sciences(No.Kf201017);the Qingdao Municipal Science and Technology Project(No.09-1-3-13-jch);the Award Program for Outstanding Young Researchers of Shandong Province(No.BS2009NY018)

摘　　要：A newly identified bacterial disease of kelp(Saccharina japonica) gametophytes was found in clone cultures.It is characterized by swollen gametophyte cells in the early period of infection followed by filamentous fading.An alginolytic marine bacterium referred to as A-1 was isolated from the diseased gametophytes.On the basis of 16S rDNA sequencing and morphological,physiological and biochemical characteristics,the bacterium was identified as a strain of the genus Alteromonas.By testing Koch's postulates,Alteromonas sp.A-1 was further confirmed as the pathogen.The infection process was also investigated using both scanning electron and light microscopy.A newly identified bacterial disease of kelp （Saccharina japonica） gametophytes was found in clone cultures. It is characterized by swollen gametophyte cells in the early period of infection followed by filamentous fading. An alginolytic marine bacterium referred to as A-1 was isolated from the diseased gametophytes. On the basis of 16S rDNA sequencing and morphological, physiological and biochemical characteristics, the bacterium was identified as a strain of the genus Alteromonas. By testing Koch＇s postulates, Alteromonas sp. A-1 was further confirmed as the pathogen. The infection process was also investigated using both scanning electron and light microscopy.

关 键 词：Saccharinajaponica GAMETOPHYTE PATHOGEN BACTERIA Alteromonas 

分 类 号：S946.11[农业科学—水产养殖]