The effective antagonistic potential of plant growth-promoting rhizobacteria against Alternaria solani-causing early blight disease in tomato plant

Attia, Mohamed S.; El-Sayyad, Gharieb S.; Elkodous, M. Abd; El-Batal, Ahmed I.

doi:10.1016/j.scienta.2020.109289

Cited by 99 publications

(66 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The correlation analysis between disease severity and yield components indicated that fruit yield had significant negative correlations with the disease severity. These results proved the negative impact of early blight disease on the fruit yield and growth traits of tomato plants in mock-treated plants, which agreed with previous studies [7]. However, treatment with difenoconazole fungicide or gallic acid and its derivatives significantly weakened this correlation, and we suggested that those compounds protected the tomato plants from pathogen attack.…”

Section: Discussionsupporting

confidence: 92%

“…The inoculated plants were covered with polythene bags for 24 h to increase the humidity and after that, the plants were kept under greenhouse conditions. Disease incidence (DI%) was evaluated and data were collected three times regularly (7,14, and 21 days post-inoculation (dpi)) to observe the progress of early blight disease. The experiment was repeated twice with the same experimental design as described above.…”

Section: Pathogenicity Testmentioning

confidence: 99%

See 1 more Smart Citation

The Antifungal Activity of Gallic Acid and Its Derivatives against Alternaria solani, the Causal Agent of Tomato Early Blight

et al. 2020

View full text Add to dashboard Cite

Tomato (Solanum lycopersicum L.) is among the most important vegetable crops worldwide. Early blight disease, caused by Alternaria solani, is a destructive foliar disease of tomato and other Solanaceae species. Herein, we investigated the in vitro antifungal properties of gallic acid and two of its derivatives (syringic and pyrogallic acids) against A. solani during 2019 and 2020 seasons. The physiological and biochemical effects of these compounds on infected tomato plants were also investigated using the whole plant bioassay. The in vitro investigation showed that all tested compounds showed fungistatic action and inhibited the mycelial radial growth of A. solani in a dose-dependent manner. In two separate pot-experiments, those compounds efficiently suppressed the development of the disease symptoms and area under disease progress curve (AUDPC), without any phytotoxic effects on the treated tomato plants. Additionally, all tested compounds positively enhanced the biochemical traits of treated plants including the chlorophyll content, the total soluble phenolics, the total soluble flavonoids, and the enzymatic activities of catalase, peroxidase, and polyphenol oxidase during 2019 and 2020 seasons. Moreover, the treatment with gallic acid and its derivatives significantly increased all yield components of A. solani-infected tomato plants such as the total number of flowers and fruits, and the fruit yield for each tomato plant in both experiments. Considering the fungitoxicity of phenolic acids against A. solani with no phytotoxicity on treated tomato plants, we believe that gallic acid and its derivatives might be a sustainable eco-friendly control strategy to reduce the usage of chemical fungicides partially or entirely against A. solani particularly, and fungal diseases in general.

show abstract

Section: Discussionsupporting

confidence: 92%

Section: Pathogenicity Testmentioning

confidence: 99%

The Antifungal Activity of Gallic Acid and Its Derivatives against Alternaria solani, the Causal Agent of Tomato Early Blight

et al. 2020

View full text Add to dashboard Cite

show abstract

“…not only improves nutrient access to plants but also suppress diseases and other abiotic stresses faced by the plants 48 – 50 . PGPR suppress foliar pathogens by inducing systemic resistance via metabolic pathways involving ethylene or jasmonic acid (JA) 51 , 52 . Therefore, considering a balanced use of soil organic additives and biological antagonists provide an innovative platform to control the soil-borne as well as aerial pathogens 53 .…”

Section: Introductionmentioning

confidence: 99%

Role of biochar, compost and plant growth promoting rhizobacteria in the management of tomato early blight disease

Rasool

Akhter

Soja

et al. 2021

Sci Rep

View full text Add to dashboard Cite

The individual role of biochar, compost and PGPR has been widely studied in increasing the productivity of plants by inducing resistance against phyto-pathogens. However, the knowledge on combined effect of biochar and PGPR on plant health and management of foliar pathogens is still at juvenile stage. The effect of green waste biochar (GWB) and wood biochar (WB), together with compost (Comp) and plant growth promoting rhizobacteria (PGPR; Bacillus subtilis) was examined on tomato (Solanum lycopersicum L.) physiology and Alternaria solani development both in vivo and in vitro. Tomato plants were raised in potting mixture modified with only compost (Comp) at application rate of 20% (v/v), and along with WB and GWB at application rate of 3 and 6% (v/v), each separately, in combination with or without B. subtilis. In comparison with WB amended soil substrate, percentage disease index was significantly reduced in GWB amended treatments (Comp + 6%GWB and Comp + 3%GWB; 48.21 and 35.6%, respectively). Whereas, in the presence of B. subtilis disease suppression was also maximum (up to 80%) in the substrate containing GWB. Tomato plant growth and physiological parameters were significantly higher in treatment containing GWB (6%) alone as well as in combination with PGPR. Alternaria solani mycelial growth inhibition was less than 50% in comp, WB and GWB amended growth media, whereas B. subtilis induced maximum inhibition (55.75%). Conclusively, the variable impact of WB, GWB and subsequently their concentrations in the soil substrate was evident on early blight development and plant physiology. To our knowledge, this is the first report implying biochar in synergism with PGPR to hinder the early blight development in tomatoes.

show abstract

“…Several reports have demonstrated that rhizobacteria are able to enhance plant resistance to salinity stress, and this effect is produced via up-regulation of ABA signaling [35][36][37][38]. Although the ability of growth-promoting rhizobacteria to induce the accumulation of ABA under abiotic stress has been thoroughly explored, only few reports related to accumulation of ABA in response to pathogen infection in rhizobacteria-treated plants can be found in the literature [39,40]. The antagonistic relationship between ABA and ET signaling is consistent with the observed ABA accumulation and P. putida-induced low ET level [41,42].…”

Section: Discussionmentioning

confidence: 99%

Pseudomonas putida Represses JA- and SA-Mediated Defense Pathways in Rice and Promotes an Alternative Defense Mechanism Possibly through ABA Signaling

Wang

Tang

et al. 2020

Plants

View full text Add to dashboard Cite

The signaling pathways induced by Pseudomonas putida in rice plants at the early plant–rhizobacteria interaction stages, with and without inoculation of Xanthomonas oryzae pv. oryzae, were studied. In the absence of pathogen, P. putida reduced ethylene (ET) production, and promoted root and stem elongation. Interestingly, gene OsHDA702, which plays an important role in root formation, was found significantly up-regulated in the presence of the rhizobacterium. Although X. oryzae pv. oryzae inoculation enhanced ET production in rice plants, P. putida treatment repressed ET-, jasmonic acid (JA)- and salicylic acid (SA)-mediated defense pathways, and induced the biosynthesis of abscisic acid (ABA), and the overexpression of OsHDA705 and some pathogenesis-related proteins (PRs), which in turn increased the susceptibility of the rice plants against the pathogen. Collectively, this is the first work on the defense signaling induced by plant growth-promoting rhizobacteria in plants at the early interaction stages, and suggests that rhizobacteria stimulate an alternative defense mechanism in plants based on ABA accumulation and OsHDA705 signaling.

show abstract

The effective antagonistic potential of plant growth-promoting rhizobacteria against Alternaria solani-causing early blight disease in tomato plant

Cited by 99 publications

References 72 publications

The Antifungal Activity of Gallic Acid and Its Derivatives against Alternaria solani, the Causal Agent of Tomato Early Blight

The Antifungal Activity of Gallic Acid and Its Derivatives against Alternaria solani, the Causal Agent of Tomato Early Blight

Role of biochar, compost and plant growth promoting rhizobacteria in the management of tomato early blight disease

Pseudomonas putida Represses JA- and SA-Mediated Defense Pathways in Rice and Promotes an Alternative Defense Mechanism Possibly through ABA Signaling

Contact Info

Product

Resources

About