Proceedings of the International Symposium Southeast Asia Vegetable 2021 (SEAVEG 2021)

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Evaluation of Biocontrol Agents Against Bacterial Wilt in Tomato Using Seedling Screening

Authors
Lourena Arone Maxwell1, Hung-Chia Chang1, Jaw-Rong Chen1, Lawrence Kenyon1, Srinivasan Ramasamy1, *
1World Vegetable Center, P.O. Box 42, Tainan, 74199, Taiwan
*Corresponding author. Email: srini.ramasamy@worldveg.org
Corresponding Author
Srinivasan Ramasamy
Available Online 12 December 2022.
DOI
10.2991/978-94-6463-028-2_43How to use a DOI?
Keywords
Tomato; Biocontrol; Bacterial wilt; Seedling screening
Abstract

Tomato is among the most cultivated vegetable crops worldwide, and bacterial wilt (BW) caused by the Ralstonia solanacearum species complex (RSSC) is the most devastating disease affecting tomato, impacting food and nutrition security in many areas. Pesticides used for controlling plant diseases are hazardous to producers, consumers, and the environment, whereas biological control is potentially a sustainable and environmentally safe alternative for disease management. To identify efficient biocontrol agents (BCAs), twenty-five potential BCA isolates were screened for control efficacy to BW on ten-day-old tomato seedlings of highly susceptible (L390) and moderately resistant (L180) cultivars previously inoculated with R. solanacearum strain PSS4 (=Asian origin, Race 1, Phylotype I; Biovar 3). After ten days incubation at 28 ℃ in the growth chamber, wilting (W%) and biocontrol efficacy (BE%) percent were evaluated. Of the 25 BCAs tested, four significantly reduced W%, with BE% ranging from 50% to 80% for both varieties. The four BCA isolates were identified as Talaromyces sp., Trichoderma sp., Bacillus sp., and Variovorax sp. The seedling method allows the rapid and cost-effective in vivo screening of many potential BCAs to reliably identify those with higher bacterial wilt control efficacy for further testing.

Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the International Symposium Southeast Asia Vegetable 2021 (SEAVEG 2021)
Series
Advances in Biological Sciences Research
Publication Date
12 December 2022
ISBN
978-94-6463-028-2
ISSN
2468-5747
DOI
10.2991/978-94-6463-028-2_43How to use a DOI?
Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Lourena Arone Maxwell
AU  - Hung-Chia Chang
AU  - Jaw-Rong Chen
AU  - Lawrence Kenyon
AU  - Srinivasan Ramasamy
PY  - 2022
DA  - 2022/12/12
TI  - Evaluation of Biocontrol Agents Against Bacterial Wilt in Tomato Using Seedling Screening
BT  - Proceedings of the International Symposium Southeast Asia Vegetable 2021 (SEAVEG 2021)
PB  - Atlantis Press
SP  - 415
EP  - 422
SN  - 2468-5747
UR  - https://doi.org/10.2991/978-94-6463-028-2_43
DO  - 10.2991/978-94-6463-028-2_43
ID  - Maxwell2022
ER  -