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Position: Home > Articles > Colonization of Bacillus cereus NJSZ-13, a species with nematicidal activity in Masson pine (Pinus massoniana Lamb.) Journal of Forestry Research 2020,31 (3)

Colonization of Bacillus cereus NJSZ-13, a species with nematicidal activity in Masson pine (Pinus massoniana Lamb.)

作者：

Liangliang Li;Jiajin Tan;Fengmao Chen;Dejun Ha

单位：

College of Forestry, Nanjing Forestry University, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing, People’s Republic of China;College of Forestry, Nanjing Forestry University, Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing, People’s Republic of Chin

关键词：

Bacillus cereus;Endophytes;Green fluorescent protein;Plasmid stability;Colonization;BACTERIAL ENDOPHYTES;NEMATODE;MARKER;COTTO

摘要：

Bacillus cereus NJSZ-13, an endophytic bacterium with nematicidal activity, was isolated from stems of healthy Pinus elliottii Engelm. Colonization of P. massoniana Lamb. by endophytic B. cereus was studied using scanning electron microscopy and confocal laser scanning microscopy. After the plasmid pGFP78 containing the green fluorescent protein (GFP) gene was transformed into the NJSZ-13 strain, the NJSZ-13:gfp showed the same nematicidal activity and growth curve as the wild-type strain, and the plasmid pGFP78 was stably maintained in strain NJSZ-13 for at least 96 h of bacterial cultivation on medium without antibiotics. After inoculation into Masson pine roots, colonization of the NJSZ-13:gfp strain in plant roots and stems was visualized using confocal laser scanning and the strain was enumerated in inoculated roots and stems. These results suggest that NJSZ-13:gfp is an efficient colonizer of Masson pine and can transfer vertically from roots to stems.

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Colonization of Bacillus cereus NJSZ-13, a species with nematicidal activity in Masson pine (Pinus massoniana Lamb.)

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