Multifaceted beneficial effects of rhizosphere microorganisms on plant health and productivity

Avis, Tyler J.; Gravel, Valérie; Antoun, Hani; Tweddell, Russell J.

doi:10.1016/j.soilbio.2008.02.013

Cited by 287 publications

(172 citation statements)

References 107 publications

Supporting

Mentioning

156

Contrasting

Unclassified

Order By: Relevance

“…in controlling plant pathogens have been proven in many studies and through direct benefits of these fungi on plant growth and production (Avis et al, 2008). This was in agreement with our findings, where rice plants inoculated with Trichoderma spp.…”

Section: Discussionsupporting

confidence: 94%

“…However, Trichoderma spp. are multifunctional plant symbionts for enhancing germination rate and increasing seedling lengths of pepper, bean, radish, tomato, pepper and cucumber (Avis et al, 2008;Oyarbide et al, 2001;Yossen et al, 2003). Moreover, the present investigation shows that the use of Trichoderma T61 exhibited the highest dry biomass of rice seedlings was explained in relation to the high IAA production.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Potential of Trichoderma spp. as Biological Control Agents Against Bakanae Pathogen (Fusarium fujikuroi) in Rice

Ng¹,

Ngadin²,

azhari³

et al. 2015

Asian J. of Plant Pathology

View full text Add to dashboard Cite

Bakanae disease is a major rice disease caused by Fusarium fujikuroi. Infected plants show slender and hyper elongated internodes due to the over-production of gibberellic acid. Application of Trichoderma spp. as biocontrol agent is gaining attention due to high capability in hyperparasitize the soil borne pathogen. The studies aimed to screen and evaluate the bio-efficacy of Trichoderma spp. with antagonistic activities against F. fujikuroi and plant growth-promoting properties. All the 65 Trichoderma isolates were isolated from healthy rice rhizosphere soil. Thirty eight out of 65 Trichoderma isolates exhibited more than 45 Percentage of Inhibition Radial Growth (PIRG) against F. fujikuroi in dual culture plate testing. All selected Trichoderma isolates were further in vitro screened for antagonistic testing: volatile compounds production and hydrogen cyanide production and plant growth-promotion properties: IAA production and phosphate solubilization. Twelve Trichoderma isolates were selected for further evaluation on antagonistic activity against F. fujikuroi, germination rate, plumule and radical lengths and vigor index. Finally, seven of the most potential Trichoderma isolates were selected for greenhouse evaluation. The bakanae disease incidence and disease severity in rice plant treated with respective selected Trichoderma isolates were significant reduced as compared with untreated plant. However, there was no significant increase in plant height between Trichoderma inoculated and uninoculated plants. Moreover, rice plant treated with Trichoderma T61 showed significantly increase in total plant dry biomass as compared to untreated plants. The selected Trichoderma isolates have potential to be developed as biological control agent against F. fujikuroi and also as an alternative for bakanae management.

show abstract

Section: Discussionsupporting

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Potential of Trichoderma spp. as Biological Control Agents Against Bakanae Pathogen (Fusarium fujikuroi) in Rice

Ng¹,

Ngadin²,

azhari³

et al. 2015

Asian J. of Plant Pathology

View full text Add to dashboard Cite

show abstract

“…Moreover, the composition will likely evolve over time as fish production practices are constantly changing and improving. Knowing more about the functional diversity of microbial communities would make it easier to exploit the full potential of using aquaculture by-products in organic production systems (Avis et al 2008). …”

Section: Discussionmentioning

confidence: 99%

Fish effluents promote root growth and suppress fungal diseases in tomato transplants

et al. 2015

Self Cite

View full text Add to dashboard Cite

Gravel, V., Dorais, M., Dey, D. and Vandenberg, G. 2015. Fish effluents promote root growth and suppress fungal diseases in tomato transplants. Can. J. Plant Sci. 95: 427–436. Aquaculture systems generate large amounts of wastes which may constitute a beneficial amendment for horticultural crop in terms of nutrients, plant growth promoter and disease suppressiveness. This study aimed to determine (1) the nutrient value of rainbow trout farming effluents coming from two feed regimes and (2) the plant growth and disease suppressiveness effects of those fish farming effluents on tomato transplants. The effluent sludge from Skretting Orient™ (SO) had a higher content of P (38 vs. 32 mg L−1), K (23 vs. 11 mg L−1), N (19 vs. to 11 mg NO3 L−1; 186 vs. 123 mg NH4 L−1), and a higher NO3:NH4 ratio (1:9 vs. 1:13) compared with the Martin Classic (MC), while MC was richer in Mg (42 vs. 24 mg L−1) and Ca (217 vs. 169 mg L−1). For the first trial, a stimulating effect of the fish effluent was observed on plant height, leaf area and root dry biomass, while only the root biomass was increased during the second trial. Fish sludge was rich in microorganisms (97 and 142 µg fluorescein h−1 mL−1 for SO and MC, respectively) and their ability to suppress Pythium ultimum Trow and Fusarium oxysporum f.sp. lycopersici (Sacc.) Snyder & Hansen was observed. Both crude fish effluents reduced in vitro mycelial growth of P. ultimum and F. oxysporum, by 100 and 32%, respectively, while MC effluents showed a higher inhibition against F. oxysporum. When fish effluents were sterilized by filtration or autoclaving, lower in vitro inhibition of P. ultimum and F. oxysporum was observed. Mixed fish effluents reduced tomato plant root colonization by P. ultimum (by up to 5.7-fold) and F. oxysporum (by up to 2.1-fold). These results showed that fish effluent can be used as soil amendments to promote plant growth and increase soil suppressiveness, which in turn can prevent soil-borne diseases.

show abstract

“…To increase agricultural efficiency, increase in plant growth by using eco-friendly alternatives is essential for sustainable agricultural production. Thus, the use of natural processes to improve the quantity and quality of agronomics can result in development of expanded food production system, which will ultimately bring sustainability to the ecological systems (Avis et al, 2008;Berg, 2009).…”

Section: Root Microbiomementioning

confidence: 99%

Plant growth promoting rhizobacteria and their potential for biocontrol of phytopathogens

Ramadan¹,

Abdel-Hafez²,

Hassan³

et al. 2016

Afr. J. Microbiol. Res.

View full text Add to dashboard Cite

Growth promotion and disease control by rhizobacteria are complex interrelated processes that involve direct and indirect mechanisms. The mechanisms include synthesis of some metabolites (auxin, cytokinin and gibberellins), induction of 1-aminocyclopropane-1-carboxylate (ACC) deaminase, production of siderophore, antibiotics, hydrogen cyanide hydrogen cyanide (HCN) and volatile compounds. They also include mineral solubilization competition, and induction of systemic resistance. These bacteria are suitable as soil inoculants because they have the potential for rapid and aggressive colonization. This feature alone is characterised as a disease control mechanism, which prevents the invasion of detrimental soil microorganisms onto the root surface. Inoculant-based plant growthpromoting rhizobacteria (PGPR) is applied extensively on agricultural crops to improve plants' growth and simultaneously reduce chemical inputs like fertilizer and pesticide which can cause environmental degradation. The structure of the rhizobacterial community is affected by several factors including plant genotype and is determined by the amount and composition of root exudates. In addition, soil type and fertility are the contributing factors that shape the community. This form of communication can affect plants' growth, nutrient status and also susceptibility to stress and pathogens in the host plant. PGPR inoculants cause diverse beneficial interactions among plants, which leads to sustainable and environment-friendly agriculture. The application of rhizosphere soil of agricultural crops with desirable bacterial populations is considered promising in both laboratory and greenhouse experiment. Further, a clearer understanding of the way PGPRs promote plants' growth can lead to expanded exploitation of these 'biofertilizers' in order to reduce the potential negative environmental effects associated with food and fiber production.

show abstract

Multifaceted beneficial effects of rhizosphere microorganisms on plant health and productivity

Cited by 287 publications

References 107 publications

Potential of Trichoderma spp. as Biological Control Agents Against Bakanae Pathogen (Fusarium fujikuroi) in Rice

Potential of Trichoderma spp. as Biological Control Agents Against Bakanae Pathogen (Fusarium fujikuroi) in Rice

Fish effluents promote root growth and suppress fungal diseases in tomato transplants

Plant growth promoting rhizobacteria and their potential for biocontrol of phytopathogens

Contact Info

Product

Resources

About