Induction of defense-related proteins and growth promotion in tomato by mixture of Trichoderma harzianum OTPB3 and Bacillus subtilis OTPB1 and Pseudomonas putida OPf1 against Phytophthora infestans

Kumar, Santosh; Chowdappa, P.; Krishna, V. Hari; Sandhya, H.

doi:10.5897/ajmr2014.7141

Cited by 7 publications

(1 citation statement)

References 73 publications

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“…Our results are analogous to Harish et al (2009) [65], who showed that, compared with individual isolate applications, maximum PAL, POD, and PPO activities were induced in bananas challenged with the banana bunchy top virus that were treated with a mixture of the two isolates. Similarly, Mohan [66] reported that tomato seeds treated with a combination of Trichoderma harzianum (OTPB3), Bacillus subtilis (OTPB1), and Pseudomonas putida (OPf1) had significantly reduced incidence of late blight and significantly increased PAL, PPO, and POD activities compared to treatment with OPf1, OTPB3, or OTPB1 alone. Similarly, maximum PAL, POD, and SOD activities in chickpea were induced in Pseudomonas (PHU094), Trichoderma (THU0816), and Rhizobium (RL091) consortium-treated plants challenged with the pathogen compared to the single strain and dual strain consortia [57].…”

Section: Discussionmentioning

confidence: 99%

Synergistic Effect between Trichoderma virens and Bacillus velezensis on the Control of Tomato Bacterial Wilt Disease

et al. 2021

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(1) Background: Ralstonia solanacearum causes tomato bacterial wilt disease, one of the most serious tomato diseases. As the combination of Trichoderma virens (Tvien6) and Bacillus velezensis (X5) was more effective at controlling tomato bacterial wilt disease than a single agent, we investigated the synergistic effect of Tvien6 and X5 in controlling this disease; (2) Methods: The disease incidence, plant heights and weights, relative chlorophyll content (SPAD values), defensive enzymes (PPO, POD, and SOD) activities, and metabolome were estimated among four treatment groups (BR treatment, X5 + R. solanacearum (RS-15); TR treatment, Tvien6+ RS-15; TBR treatment, Tvien6 + X5 + RS-15; and R treatment, RS-15); (3) Results: The R treatment group had the highest disease incidence and lowest plant heights, plant weights, SPAD values, defensive enzyme activities, and D-fructose and D-glucose contents; the TBR treatment group had the lowest disease incidence and highest plant heights, plant weights, SPAD values, defensive enzyme activities, and D-fructose and D-glucose contents; (4) Conclusions: The results revealed that Tvien6 and X5 can both individually promote tomato plant growth, increase leaf chlorophyll content, enhance defensive enzyme activities, and induce the accumulation of D-fructose and D-glucose; however, they were more effective when combined.

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