Colonization Dynamics Difference of Acidovorax.citrulli Subgroup I Pslb3 Strains And Subgroup II Pslbtw43 Strains in Melon Plants

• Main Authors: B.X. Sun, J.F. Fu, T.C. Zhao, Y.J. Bai, H. Dong
• Format: Article
• Language: English
• Published: AIDIC Servizi S.r.l. 2015-12-01
• Series: Chemical Engineering Transactions
• Online Access: https://www.cetjournal.it/index.php/cet/article/view/4406

This paper researched the colonization dynamics difference of the causal agent of bacterial fruit blotch of watermelon Acidovorax.citrulli subgroup1 pslb3 strains and subgroup 2 strains pslbtw43 in melon plants. Under sunlit greenhouse condition, inoculated melon seeds with subgroup I pslb3 strains and subgroup II pslbtw43 strains marked green fluorescent protein(GFP),collection hypocotya, root, cotyledon and blade periodically, separate pathogenic bacterium and count it. The result showed that both subgroup I pslb3 and subgroup II pslbtw43 can colonization on all organs of melon plant, and it was the strongest in cotyledon. The maximum of bacteria recycled of group I pslb3 strain in cotyledon was 5.26×108 CFU/g, it was 2.56×107 CFU/g of group II pslbtw43 strain. The bacteria recycled in cotyledons which inoculated subgroup I pslb3 strains or subgroup II pslbtw43 strains were both 0 after 30 days inoculated. The colonized ability of subgroup I pslb3 strains in melon organization was stronger than subgroup II pslbtw43 strains, the colonization ability of both them was weakest in blade.