Characterization of rhizosphere fungi that mediate resistance in tomato against bacterial wilt disease

Jogaiah, Sudisha; Abdelrahman, Mostafa; Tran, Lam‐Son Phan; Ito, Shin

doi:10.1093/jxb/ert212

Cited by 171 publications

(80 citation statements)

References 42 publications

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“…Induction of resistance in host plants is known to be accompanied by an increase in defense-related enzymes, including PPO, PAL, and POX (Reignault et al, 2001; Nandeeshkumar et al, 2008; Jogaiah et al, 2013; Babu et al, 2015). Therefore, we have tested the ability of seed-priming with trehalose in inducing PPO, PAL, and POX using the experimental design described in detail in “Materials and Methods.” The NIC and RC samples showed a significant difference ( P ≤ 0.05) from each other in terms of PPO activities.…”

Section: Resultsmentioning

confidence: 99%

Exogenous Trehalose Treatment Enhances the Activities of Defense-Related Enzymes and Triggers Resistance against Downy Mildew Disease of Pearl Millet

et al. 2016

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In recent years, diverse physiological functions of various sugars are the subject of investigations. Their roles in signal transduction in plant responses to adverse biotic and abiotic stress conditions have become apparent, and growing scientific evidence has indicated that disaccharides like sucrose and trehalose mediate plant defense responses in similar way as those induced by elicitors against the pathogens. Trehalose is a well-known metabolic osmoregulator, stress-protectant and non-reducing disaccharide existing in a variety of organisms, including fungi, bacteria, and plants. Commercially procured trehalose was applied to seeds of susceptible pearl millet (Pennisetum glaucum) cultivar “HB3,” and tested for its ability to reduce downy mildew disease incidence by induction of resistance. Seed treatment with trehalose at 200 mM for 9 h recorded 70.25% downy mildew disease protection, followed by those with 100 and 50 mM trehalose which offered 64.35 and 52.55% defense, respectively, under greenhouse conditions. Furthermore, under field conditions treatment with 200 mM trehalose for 9 h recorded 67.25% downy mildew disease protection, and reduced the disease severity to 32.75% when compared with untreated control which displayed 90% of disease severity. Trehalose did not affect either sporangial formation or zoospore release from sporangia, indicating that the reduction in disease incidence was not due to direct inhibition but rather through induction of resistance responses in the host. Additionally, trehalose was shown to enhance the levels of polyphenol oxidase, phenylalanine ammonia lyase, and peroxidase, which are known as markers of both biotic and abiotic stress responses. Our study shows that osmoregulators like trehalose could be used to protect plants against pathogen attacks by seed treatment, thus offering dual benefits of biotic and abiotic stress tolerance.

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Section: Resultsmentioning

confidence: 99%

Exogenous Trehalose Treatment Enhances the Activities of Defense-Related Enzymes and Triggers Resistance against Downy Mildew Disease of Pearl Millet

et al. 2016

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“…In addition, fungal-produced IAA can beneficially affect plants indirectly by strengthening plant immune responses to suppress phytopathogenic strains and disease development. [57][58][59] Biological control of plant diseases by microorganisms has been studied for many years. Fungi can secrete plant growth-promoting substances such as IAA, which, in turn, induce systemic resistance mechanism in plants to prevent pathogen attack.…”

Section: Fungal-produced Iaa Signaling In Plant Defense Responsesmentioning

confidence: 99%

“…A significant disease reduction against R. solanacearum was observed when tomato plants were pretreated with IAA-producing Trichoderma. 59 Furthermore, the induction of defense-related enzymes and genes was observed in tomato plants pretreated with Trichoderma or inoculated with the pathogen. IAA-producing Trichoderma stimulated the susceptible tomato cultivar to synthesize phenylalanine ammonia lyase, peroxidase, and b-1,3-glucanase, which contributed to defense resistance against the disease.…”

Section: Fungal-produced Iaa Signaling In Plant Defense Responsesmentioning

confidence: 99%

“…IAA-producing Trichoderma stimulated the susceptible tomato cultivar to synthesize phenylalanine ammonia lyase, peroxidase, and b-1,3-glucanase, which contributed to defense resistance against the disease. 59 Streptomyces strains were selected with the ability to prolifically produce IAA and siderophores. These strains significantly promoted tomato plant growth and antagonized the growth of Alternaria alternata, a causative agent of early blight.…”

Section: Fungal-produced Iaa Signaling In Plant Defense Responsesmentioning

confidence: 99%

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Indole-3-acetic acid: A widespread physiological code in interactions of fungi with other organisms

Wei

Chen

et al. 2015

Plant Signaling & Behavior

267

142

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“…The ability of Trichoderma spp. to induce systemic resistance in dicotyledonous and monocotyledonous plants has been demonstrated against different pathogens, including the fungus S. sclerotiorum in tomato and cauliflower [18], the bacteria Ralstonia solanacearum in tomato [19], the cucumber mosaic virus in A. thaliana [20], and the nematode Meloidogyne incognita in Vigna radiate [21]. The fungus T. viride can induce systemic resistance against Fusarium oxysporum and Alternaria spp.…”

Section: Introductionmentioning

confidence: 99%

Induced Systemic Resistance in Two Genotypes of Brassica napus (AACC) and Raphanus oleracea (RRCC) by Trichoderma Isolates against Sclerotinia sclerotiorum

Alkooranee¹,

Aledan²,

Xiang³

et al. 2015

AJPS

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Two different species, Trichoderma viride TV10 and Trichoderma harzianum TH12 from 30 Trichoderma isolates were selected out based on their high growth inhibition of the phytopathogen Sclerotinia sclerotiorum (Lib) de Bary, which reached 84.44% and 100%, respectively. Their untreated culture filtrates (CF) and culture filtrates treated with heat (CFH) also were tested for growth inhibition of the pathogen in potato dextrose agar (PDA). Morphological and molecular characterisation by internal transcribed spacer (ITS) PCR provided consistent identification of these isolates. The degree of infection and disease index (DI) of S. sclerotiorum were examined in Brassica napus (AACC) and Raphanus alboglabra (RR) and Brassica alboglabra (CC). The results revealed that Raphanus alboglabra showed higher disease resistance than that of B. napus. Biotic elecitors T. harzianum TH12 and T. viride TV10 and their CF and CFH demonstrated the ability to cause induced systemic resistance (ISR) in B. napus and Raphanus alboglabra against sclerotinia stem rot (SSR) disease. Furthermore, a high ability to reduce the degree of infection and DI in B. napus with the biotic elicitors T. harzianum TH12 and T. viride TV10 was observed, with numbers reaching 7.22% to 6.67% and 17.78% to 11.67%, respectively. When CF were used, reached 20.00% to 16.67% and 33.33% to 23.33%, respectively; with CFH, values reached 35.00% to 21.67% and 37.78% to 28.33%, respectively. While in Raphanus alboglabra the degree of infection and DI * Corresponding authors. J. T. Alkooranee et al. 1663reached 0.00% and 0.00% with all biotic elicitors treatments. These results show that biotic elicitor treatments significantly (P < 0.05) can increase the fresh and dry weights of both roots and shoots as well as plant height compared with controls. The TH12 treatment in B. napus and Raphanus alboglabra ranked as most effective. This study showed for the first time the ability of genotype Raphanus alboglabra (RRCC) to demonstrate resistance against S. sclerotiorum with or without treatment by biotic elicitors and the ability of genotype B. napus (AACC) to demonstrate resistance to the pathogen after treatment with biotic elicitors.

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Characterization of rhizosphere fungi that mediate resistance in tomato against bacterial wilt disease

Cited by 171 publications

References 42 publications

Exogenous Trehalose Treatment Enhances the Activities of Defense-Related Enzymes and Triggers Resistance against Downy Mildew Disease of Pearl Millet

Exogenous Trehalose Treatment Enhances the Activities of Defense-Related Enzymes and Triggers Resistance against Downy Mildew Disease of Pearl Millet

Indole-3-acetic acid: A widespread physiological code in interactions of fungi with other organisms

Induced Systemic Resistance in Two Genotypes of <i>Brassica napus</i> (AACC) and <i>Raphanus oleracea</i> (RRCC) by <i>Trichoderma</i> Isolates against <i>Sclerotinia sclerotiorum</i>

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Characterization of rhizosphere fungi that mediate resistance in tomato against bacterial wilt disease

Cited by 171 publications

References 42 publications

Exogenous Trehalose Treatment Enhances the Activities of Defense-Related Enzymes and Triggers Resistance against Downy Mildew Disease of Pearl Millet

Exogenous Trehalose Treatment Enhances the Activities of Defense-Related Enzymes and Triggers Resistance against Downy Mildew Disease of Pearl Millet

Indole-3-acetic acid: A widespread physiological code in interactions of fungi with other organisms

Induced Systemic Resistance in Two Genotypes of &lt;i&gt;Brassica napus&lt;/i&gt; (AACC) and &lt;i&gt;Raphanus oleracea&lt;/i&gt; (RRCC) by &lt;i&gt;Trichoderma&lt;/i&gt; Isolates against &lt;i&gt;Sclerotinia sclerotiorum&lt;/i&gt;

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Induced Systemic Resistance in Two Genotypes of <i>Brassica napus</i> (AACC) and <i>Raphanus oleracea</i> (RRCC) by <i>Trichoderma</i> Isolates against <i>Sclerotinia sclerotiorum</i>