title: Colonization by endophytic Ochrobactrum anthropi Mn1 promotes growth of Jerusalem artichoke.
abstract: The Ochrobactrum anthropi Mn1 strain, taxonomically identified using 16S ribosomal DNA sequence, was isolated from roots of Jerusalem artichoke. Its endophytic colonization was investigated microscopically using green fluorescent protein introduced by vector pHC60. The strain entered Jerusalem artichoke tissues through the root, and was localized in the roots and stems. The plant growth-promoting (PGP) effects of O. anthropi Mn1 were assessed in greenhouse as well as field trials with different nitrogen supplies. Only under moderate to ample nitrogen supply, could O. anthropi Mn1 promoted growth of host plant. The PGP effects of the strain were symbiotic nitrogen fixation, root morphological optimization and enhanced nutrient uptake. We hypothesize that the symbiotic interspecies interaction might be quorum sensing related.
authors: Jiangsu Provincial Key Laboratory of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, China.
authors: Xianfa
authors: X
authors: Meng
authors: Dekai
authors: D
authors: Yan
authors: Xiaohua
authors: X
authors: Long
authors: Changhai
authors: C
authors: Wang
authors: Zhaopu
authors: Z
authors: Liu
authors: Zed
authors: Z
authors: Rengel
mesh_terms: D060026:Endophytes / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism*; D006368:Helianthus / Q000254:growth & development* / Q000382:microbiology*; D008969:Molecular Sequence Data; D009584:Nitrogen / Q000378:metabolism; D009586:Nitrogen Fixation; D020621:Ochrobactrum anthropi / Q000145:classification / Q000235:genetics / Q000254:growth & development* / Q000302:isolation & purification; D010802:Phylogeny; D018517:Plant Roots / Q000254:growth & development / Q000382:microbiology
chemical_list: D009584:Nitrogen