Burkholderia gladioli associated with symptoms of bacterial grain rot and leaf-sheath browning of rice plants

Abstract

Rice plants with bacterial leaf-sheath browning and grain rot were observed in Fukuoka Prefecture in Japan during the autumn seasons of 1995 and 1996. Burkholderia spp. were consistently isolated from the infected leaf sheaths and grains. These isolates were pathogenic and induced symptoms of seedling rot, grain rot, and leaf-sheath browning in rice plants, as well as in some orchidaceous plants (cymbidium, dendrobium, and oncidium leaves), gladiolus leaves, and onion bulbs. On the basis of morphological, physiological and pathological tests, and speciesspecific polymerase chain reaction, the isolates were identified as belonging to either Burkholderia glumae or Burkholderia gladioli. B. gladioli, as well as B. glumae, attacked rice plants after artificial inoculation and reproduced the symptoms similar to those after natural infections. We confirmed that rice is an additional natural host of B. gladioli. It is clarified that bacterial grain rot of rice is caused not only by B. glumae but also by B. gladioli.

Burkholderia glumae en el cultivo de arroz en Costa Rica.

“…gladioli es una bacteria que comparte muchas características fenotípicas con B. glumae, tales como la temperatura de crecimiento (Nandakumar et al, 2009), el número de flagelos, producción de toxoflavina y la producción de síntomas similares en las plantas de arroz, debido a lo anterior, B. gladioli se considera un agente causal del añublo bacterial que provoca que los granos de arroz tomen tonalidades verdes y se encojan tornándose luego amarillo oscuro y finalmente café antes de secarse (Ura et al, 2006).…”

Burkholderia GladioliandPseudomonas MarginalisPathogens ofLeucojum Aestivum

“…B. gladioli is a plant pathogen and resident soil inhabitant (3,6 (3,4,5,7,9,13,15,19,28). B. gladioli has also been found as a pathogen of rice (23). Symptoms include scab and rot of bulbs and corms, rot of stems and grains, and necrotic spots or blight of leaves (3,23).…”

“…B. gladioli has also been found as a pathogen of rice (23). Symptoms include scab and rot of bulbs and corms, rot of stems and grains, and necrotic spots or blight of leaves (3,23). In Bulgaria B. gladioli pv.…”

Understanding the direction of evolution in Burkholderia glumae through comparative genomics

“…As a phytopathogen, plant-associated Burkholderia spp. are very important because they cause heavy damage and rapidly spread to many countries (Ura et al 2006;Nandakumar et al 2007Nandakumar et al , 2009Riera-Ruiz et al 2014). For example, B. plantarii causes seedling blight in rice through its phytotoxin tropolone (Urakami et al 1994).…”