PGPR-Induced Systemic Resistance (ISR) in Plant Disease Management

Annapurna, K.; Kumar, Amod; Kumar, Lakkineni Vithal; Govindasamy, Venkadasamy; Bose, P. C.; Ramadoss, D.

doi:10.1007/978-3-642-33639-3_15

Cited by 37 publications

(21 citation statements)

References 99 publications

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“…These changes in phytohormones influence plant responses to biotic and abiotic stress because they modulate defense signaling pathways that culminate in the production of secondary metabolites as well as activate defense priming (Pieterse et al, 2001(Pieterse et al, , 2014Bhattacharyya and Jha, 2012;Bulgarelli et al, 2013;Backer et al, 2018). The enhanced ability to defend itself in PGPR-colonized plants is often given by the activation of induced systemic resistance (ISR), but in some cases also by systemic acquired resistance (SAR) (Bhattacharyya and Jha, 2012;Annapurna et al, 2013;Pieterse et al, 2014;Conrath et al, 2015;Mhatre et al, 2019). Initially, both defense-priming processes were thought to act against only pathogens, however, they also play a role in enhancing plant defensive response against insect herbivores (Zamioudis and Pieterse, 2012;Conrath et al, 2015).…”

Section: Plant Growth Promoting Rhizobacteria (Pgpr)mentioning

confidence: 99%

The Effects of Biostimulants on Induced Plant Defense

et al. 2021

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The search for innovative and alternative methods for chemical control to manage pests is an increasingly growing reality. The use of biostimulants such as plant growth promoting rhizobacteria (PGPR) and humic acids (HA) has been shown to improve many agronomic characteristics of plants while increasing yield. These biostimulants also alter the production of secondary metabolites with consequences for insect herbivores. Here we review the role of biostimulants such as PGPR and HA in promoting and eliciting plant defenses. The cascading effects of using these biostimulants on insect herbivores and their natural enemies are discussed in this context. Synergism between biostimulants are also discussed. The potential role of these products in augmenting agricultural productivity is highlighted as is further need for additional research. This review highlights the potential of this tool to enhance integrated pest management in agricultural production systems, reduce the use of pesticides, and increase the efficiency of fertilization while supporting healthier more pest-resistant plants.

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Section: Plant Growth Promoting Rhizobacteria (Pgpr)mentioning

confidence: 99%

The Effects of Biostimulants on Induced Plant Defense

et al. 2021

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“…Seed germination experiments were conducted at a constant temperature of 20°C in an incubator (LHS-3-acetic acid (IAA; Zak et al, 2003), alters the nutritional status of the rhizosphere (Carvalhais et al, 2013) and can induce disease resistance (Annapurna et al, 2013). Various microbial species are present in the soil, but only few of them have certain advantages and significantly impact on plant growth (Kamal et al, 2015).…”

Section: Isolation Of Rhizospheric Bacteria and Seed Germination Expementioning

confidence: 99%

Effects of rhizobacteria on the respiration and growth of Cerasus sachalinensis Kom. seedlings

Qin

Zhou

et al. 2016

Span. j. agric. res.

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In this study, we investigated the influence of rhizosphere microorganisms on seed germination and root metabolism in Cerasus sachalinensis Kom. We inoculated C. sachalinensis plants with suspensions of dominant bacterial strains isolated from their rhizosphere. Four bacterial strains each with significant growth-promoting or growth-inhibiting effects were screened from the efficient root-colonizing microorganisms. The number of actinomycetes increased and that of fungi decreased significantly in the seedling rhizospheres after rhizobacteria treatment. The growth-promoting bacteria slightly affected the respiration rates and respiratory pathway enzymes, but significantly improved root viability, root carbohydrate concentration and seedling growth. Bacillus cereus, Staphylococcus sp. and Pseudomonas fluorescens were identified as the growth-promoting rhizobacteria; one strain could not be identified. After inoculation with the growth-inhibiting bacteria, the number of fungal colonies in the seedling rhizospheres increased and root viability and respiration rate as well as starch and sucrose accumulation in the roots significantly decreased. The glycolysis, pentose phosphate and alternative oxidase pathways became the major pathways of respiratory metabolism after inoculation with the growth-inhibiting bacteria. The height, leaf number, growth and dry weight of the seedlings decreased significantly in plants inoculated with the growth-inhibiting bacteria. Inoculation of C. sachalinensis rhizosphere with growth-promoting and growth-inhibiting bacteria affected the soil environmental factors such as microbial group composition, nutrient concentration and seedling biomass.

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“…4). salicylic acid jasmonic acid ethylene (Induced systemic resistance) (Annapurna , 2013;Beneduzi , 2012 …”

Section: 옥수수를 이용한 방제효과검정mentioning

confidence: 99%

Biological Control of Fusarium Stalk Rot of Maize Using Bacillus spp.

Han¹,

Park²,

Kim³

et al. 2015

Research in Plant Disease

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Maize (Zea mays L.) is an economically important crop in worldwide. While the consumption of the maize is steadily increasing, the yield is decreasing due to continuous mono-cultivation and infection of soil-borne fungal pathogens such as Fusarium species. Recently, stalk rot disease in maize, caused by F. subglutinans and F. temperatum has been reported in Korea. In this study, we isolated bacterial isolates in rhizosphere soil of maize and subsequently tested for antagonistic activities against F. subglutinans and F. temperatum. A total of 1,357 bacterial strains were isolated from rhizosphere. Among them three bacterial isolates (GC02, GC07, GC08) were selected, based on antagonistic effects against Fusarium species. The isolates GC02 and GC07 were most efficient in inhibiting the mycelium growth of the pathogens. The three isolates GC02, GC07 and GC08 were identified as Bacillus methylotrophicus, B. amyloliquefaciens and B. thuringiensis using 16S rRNA sequence analysis, respectively. GC02 and GC07 bacterial suspensions were able to suppress over 80% conidial germination of the pathogens. GC02, GC07 and GC08 were capable of producing large quantities of protease enzymes, whereas the isolates GC07 and GC08 produced cellulase enzymes. The isolates GC02 and GC07 were more efficient in phosphate solubilization and siderophore production than GC08. Analysis of disease suppression revealed that GC07 was most effective in suppressing the disease development of stalk rot. It was also found that B. methylotrophicus GC02 and B. amyloliquefaciens GC07 have an ability to inhibit the growth of other plant pathogenic fungi. This study indicated B. methylotrophicus GC02 and B. amyloliquefaciens GC07 has potential for being used for the development of a biological control agent.

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PGPR-Induced Systemic Resistance (ISR) in Plant Disease Management

Cited by 37 publications

References 99 publications

The Effects of Biostimulants on Induced Plant Defense

The Effects of Biostimulants on Induced Plant Defense

Effects of rhizobacteria on the respiration and growth of Cerasus sachalinensis Kom. seedlings

Biological Control of Fusarium Stalk Rot of Maize Using Bacillus spp.

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