Biological control agents improve the productivity and induce the resistance against downy mildew of grapevine

El-Sharkawy, Hany H.A.; Abo-El-Wafa, Thoraya Saber Ali; Ibrahim, Seham A.

doi:10.1007/s42161-018-0007-0

Cited by 31 publications

(20 citation statements)

References 30 publications

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“…Plant growth-promoting fungi (PGPFs) have gained immense attention as biofertilizers due to their role in maintaining plant quality and quantity and their environment-friendly relationship [69] ( Figure 1a). Advancements in the development of PGPFs for crop cultivation have been achieved in Salvia miltiorrhiza, grapevine (Vitis vinifera), and lettuce (Lactuca sativa) [69][70][71][72]. For instance, Trichoderma spp., Ganoderma spp., and yeasts (Saccharomyces spp.)…”

Section: Plant Growth-promoting Fungimentioning

confidence: 99%

“…The biocontrol agents (BCAs), including various beneficial AMFs, PGPBs, and PGPFs have been investigated by several scientists in the last 30 years [11,[90][91][92][93]. For example, various species of Pseudomonas, Saccharomyces, Streptomyces, and Trichoderma genera are the most effective BCAs that help plants acquire nutrients and control the plant pathogens [71,91,94]. These species possess a number of antagonistic mechanisms, including competition for nutrients and space with pathogenic fungi or bacteria, producing antifungal and bacterial compounds for resisting pathogenic fungi and bacteria, and direct parasitism [71,91,94].…”

Section: Biocontrol Agentsmentioning

confidence: 99%

“…For example, various species of Pseudomonas, Saccharomyces, Streptomyces, and Trichoderma genera are the most effective BCAs that help plants acquire nutrients and control the plant pathogens [71,91,94]. These species possess a number of antagonistic mechanisms, including competition for nutrients and space with pathogenic fungi or bacteria, producing antifungal and bacterial compounds for resisting pathogenic fungi and bacteria, and direct parasitism [71,91,94]. In addition, these microbes can trigger plant resistance by strengthening the cell wall and enhancing the physiological and biochemical responses of plants to stresses [95].…”

Section: Biocontrol Agentsmentioning

confidence: 99%

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Research Advances of Beneficial Microbiota Associated with Crop Plants

Tian

Lin

Tian

et al. 2020

IJMS

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Plants are associated with hundreds of thousands of microbes that are present outside on the surfaces or colonizing inside plant organs, such as leaves and roots. Plant-associated microbiota plays a vital role in regulating various biological processes and affects a wide range of traits involved in plant growth and development, as well as plant responses to adverse environmental conditions. An increasing number of studies have illustrated the important role of microbiota in crop plant growth and environmental stress resistance, which overall assists agricultural sustainability. Beneficial bacteria and fungi have been isolated and applied, which show potential applications in the improvement of agricultural technologies, as well as plant growth promotion and stress resistance, which all lead to enhanced crop yields. The symbioses of arbuscular mycorrhizal fungi, rhizobia and Frankia species with their host plants have been intensively studied to provide mechanistic insights into the mutual beneficial relationship of plant–microbe interactions. With the advances in second generation sequencing and omic technologies, a number of important mechanisms underlying plant–microbe interactions have been unraveled. However, the associations of microbes with their host plants are more complicated than expected, and many questions remain without proper answers. These include the influence of microbiota on the allelochemical effect caused by one plant upon another via the production of chemical compounds, or how the monoculture of crops influences their rhizosphere microbial community and diversity, which in turn affects the crop growth and responses to environmental stresses. In this review, first, we systematically illustrate the impacts of beneficial microbiota, particularly beneficial bacteria and fungi on crop plant growth and development and, then, discuss the correlations between the beneficial microbiota and their host plants. Finally, we provide some perspectives for future studies on plant–microbe interactions.

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Section: Plant Growth-promoting Fungimentioning

confidence: 99%

Section: Biocontrol Agentsmentioning

confidence: 99%

Section: Biocontrol Agentsmentioning

confidence: 99%

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Research Advances of Beneficial Microbiota Associated with Crop Plants

Tian

Lin

Tian

et al. 2020

IJMS

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“…In order to control P. cubensis spread, a lot of fungicides are used worldwide, however, the oomycetes develop resistance to them quite quickly [1]. Therefore, to reduce the use of chemicals, research interest has been focused on alternatives such as enhancement of the plant immunity [3]. Also, priority is given to methods that decrease plant disease spread and preserve safety for the human health [4].…”

Section: Introductionmentioning

confidence: 99%

“…K is generally reported to reduce plant infection, although in other investigations it seems to intensify the disease symptoms. For example, K limited the growth of P. cubensis on cucumber [8] and increased the resistance of grapevine against P. viticola [3]. Sweeney et al demonstrated that K fertilizer suppressed leaf rust severity of wheat [9].…”

Section: Introductionmentioning

confidence: 99%

The impact of potassium on downy mildew of cucumber and its leaf/soil nutritional status.

Papadaki¹,

Papazoglou²,

Ladomenou³

et al. 2019

SDRP-JPS

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Background: The interaction of plant nutrition and disease development has been well documented. Potassium (K) application has been widely recognized to decrease disease incidence in many host plants. However, contradictory reports about its impact on plant diseases have been ascertained therefore further research is needed for each host-pathogen system. The objective of the present study was to examine the effect of K levels on downy mildew severity and assess their impact on soil and nutritional status of cucumber plants. Methods: K (200-700 mg L-1) was applied to plants grown in pots under greenhouse conditions through fertigation, according to a randomized block design with four replicates. Nitrogen (N) and phosphorus (P) were given to plants at stable concentrations. The cucumber leaves were inoculated with a zoospore suspension of Pseudoperonospora cubensis, the causal agent of downy mildew. Leaf and lesion area as well as nutrients in plant tissues and soil were determined. Results: Plants treated with 300 and 400 mg L-1 of K demonstrated the lowest downy mildew severity. Above these rates, K supply led to downy mildew increase in cucumber leaves. The cubic regression curve can be fitted to the disease progress for downy mildew, irrespective of K doses. Leaf and soil nutrient content appeared to affect infection and leaf size. Reduced concentration of soil NH 4-N was noticed in fertigation levels of 300 and 400 mg L-1 K and the lowest Mn content appeared in leaves of cucumber plants grown in 400 mg L-1 K. Conclusion: The suppression effect of K on downy mildew had an optimum limit and beyond this, disease spread was observed. K enrichment of soil via potassium nitrate fertilizer could be considered as an efficient method for the control of downy mildew of cucumber plants.

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