title: [Identification of pathogens causing root rot of Sophora tonkinensis].
abstract: OBJECTIVE
  To identify the pathogens what caused of root rot, it can provide method of theoretical gist of integrated pest management of these kinds of diseases in the future.
  
  
  METHODS
  Pathogens from rotten root of Sophora tonkinensis were isolated by tissue isolation. Their morphological characteristics were observed and rDNA-ITS sequence were sequenced, then analyzed by Blast in GenBank.
  
  
  RESULTS
  Round colony in PDA medium. The aerial mycelium was thin, white, light gray and yellowish brown eustroma was on the surface of material. The surface of base material was flesh. Large number of small conidia ware oval, kidney-shaped, 8-16 microm x 2.5 -4 microm. And the large conidia just like Matt spore type, which had 3 to 5 septums. The length of rDNA-ITS of the fungi was 553 bp, which the ITS region sequences compared with the sequence of Fusarium solani (accession number: AB518683.1, AB470903.1, AB369488.1, AJ608989.1, GQ365154.1, EF152426.1), and Fusarium oxysporum (accession number: GQ922558.1, GQ922559.1, DQ452447.1) homology reached 99%.
  
  
  CONCLUSIONS
  Combination of two identification methods,it arrived at the cause of root rot pathogen fungi was Fusarium solani.
authors.affiliation: Guangxi Botanical Garden of Medicinal Plant, Nanning 530023, China. qinliuyan@126.com
authors.forename: Liu-Yan
authors.initials: LY
authors.lastname: Qin
authors.forename: Mei-Qiong
authors.initials: MQ
authors.lastname: Tang
authors.forename: Ni
authors.initials: N
authors.lastname: Jiang
authors.forename: Lin-Xuan
authors.initials: LX
authors.lastname: Li
authors.forename: Fan
authors.initials: F
authors.lastname: Wei
authors.forename: Jian-Hua
authors.initials: JH
authors.lastname: Miao
mesh_terms: D001483:Base Sequence; D004271:DNA, Fungal / Q000235:genetics; D004275:DNA, Ribosomal / Q000235:genetics; D021903:DNA, Ribosomal Spacer / Q000235:genetics; D005670:Fusarium / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D008969:Molecular Sequence Data; D010935:Plant Diseases / Q000382:microbiology*; D018517:Plant Roots / Q000382:microbiology*; D017422:Sequence Analysis, DNA; D029909:Sophora / Q000382:microbiology*; D013045:Species Specificity
chemical_list: D004271:DNA, Fungal; D004275:DNA, Ribosomal; D021903:DNA, Ribosomal Spacer