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Potential of Pantoea dispersa as an effective biocontrol agent for black rot in sweet potato.

ABSTRACT: Biocontrol offers a promising alternative to synthetic fungicides for the control of a variety of pre- and post-harvest diseases of crops. Black rot, which is caused by the pathogenic fungus Ceratocytis fimbriata, is the most destructive post-harvest disease of sweet potato, but little is currently known about potential biocontrol agents for this fungus. Here, we isolated several microorganisms from the tuberous roots and shoots of field-grown sweet potato plants, and analyzed their ribosomal RNA gene sequences. The microorganisms belonging to the genus Pantoea made up a major portion of the microbes residing within the sweet potato plants, and fluorescence microscopy showed these microbes colonized the intercellular spaces of the vascular tissue in the sweet potato stems. Four P. dispersa strains strongly inhibited C. fimbriata mycelium growth and spore germination, and altered the morphology of the fungal hyphae. The detection of dead C. fimbriata cells using Evans blue staining suggested that these P. dispersa strains have fungicidal rather than fungistatic activity. Furthermore, P. dispersa strains significantly inhibited C. fimbriata growth on the leaves and tuberous roots of a susceptible sweet potato cultivar ("Yulmi"). These findings suggest that P. dispersa strains could inhibit black rot in sweet potato plants, highlighting their potential as biocontrol agents.

SUBMITTER: Jiang L

PROVIDER: S-EPMC6841936 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature

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Potential of Pantoea dispersa as an effective biocontrol agent for black rot in sweet potato.

Jiang Lingmin L Jeong Jae Chul JC Lee Jung-Sook JS Park Jeong Mee JM Yang Jung-Wook JW Lee Myoung Hui MH Choi Seung Hee SH Kim Cha Young CY Kim Dae-Hyuk DH Kim Suk Weon SW Lee Jiyoung J

Scientific reports 20191108 1

Biocontrol offers a promising alternative to synthetic fungicides for the control of a variety of pre- and post-harvest diseases of crops. Black rot, which is caused by the pathogenic fungus Ceratocytis fimbriata, is the most destructive post-harvest disease of sweet potato, but little is currently known about potential biocontrol agents for this fungus. Here, we isolated several microorganisms from the tuberous roots and shoots of field-grown sweet potato plants, and analyzed their ribosomal RN ...[more]

PMID: 31704990

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Dataset Information

Potential of Pantoea dispersa as an effective biocontrol agent for black rot in sweet potato.

Publications

Potential of Pantoea dispersa as an effective biocontrol agent for black rot in sweet potato.

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