Biocontrol agents in co-inoculation manages root knot nematode [ Meloidogyne incognita (Kofoid &amp; White) Chitwood] and enhances essential oil content in Ocimum basilicum L.

Tiwari, Sudeep; Pandey, Swapnil; Chauhan, Puneet Singh; Pandey, Rakesh

doi:10.1016/j.indcrop.2016.12.030

Cited by 44 publications

(32 citation statements)

References 22 publications

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“…They concluded that nematodes clogged the vascular pathways of plants by their rapid multiplication within the tissues leading to overall impairment in their metabolic activities [ 51 ]. A similar decline in the fresh weight was observed in Ocimum basilicum plants infected with M. incognita [ 52 ]. According to them, nematode infestation had a negative impact on the uptake of nutrients by plants.…”

Section: Discussionsupporting

confidence: 72%

Insights into the Role of Streptomyces hydrogenans as the Plant Growth Promoter, Photosynthetic Pigment Enhancer and Biocontrol Agent against Meloidogyne incognita in Solanum lycopersicum Seedlings

Sharma

Khanna

Bhardwaj

et al. 2020

Plants

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Root-knot nematodes (RKN), Meloidogyne sp. hinders functioning of crops and causes global losses in terms of productivity and yield. Meloidogyne sp. are microscopic, obligatory endoparasites with ubiquitous distribution in different parts of the world. Taking into consideration these aspects, the present study was conducted to explore nematicidal activity of the Streptomyces hydrogenans strain DH-16 against M. incognita to regulate its pathogenicity in plants. In-vitro experimentation revealed that pretreated seeds with solvent and culture supernatant lowered root galls in infested plants and promoted growth of Solanum lycopersicum seedlings, revealed through the morphological analysis. Additionally, antioxidative defense responses were induced with microbes. However, oxidative stress markers were considerably reduced after microbial inoculations. Apart from this, secondary metabolites were assessed and modulated in RKN infested plants on microbial supplementations. Confocal studies evaluated glutathione accumulation within root apices and its enhancement was directly proportional to defense responses. Therefore, the current study concluded the role of S. hydrogenans in stimulating antioxidant potential against RKN along with growth promoting aids. Thus, the outcome of the current study endorses that metabolites produced by S. hydrogenans can be used as safe biocontrol agents against M. incognita and also as plant growth promoting agents.

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Section: Discussionsupporting

confidence: 72%

Insights into the Role of Streptomyces hydrogenans as the Plant Growth Promoter, Photosynthetic Pigment Enhancer and Biocontrol Agent against Meloidogyne incognita in Solanum lycopersicum Seedlings

Sharma

Khanna

Bhardwaj

et al. 2020

Plants

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“…Some authors reported antioxidant, insecticide, nematicidal, antifungal, and antibacterial activities of the basil EO (Copetta et al, 2006(Copetta et al, , 2007Toussaint et al, 2007;Verma et al, 2016;Avetisyan et al, 2017;Hanif et al, 2017;Tiwari et al, 2017). However, in the present study, the antibacterial effect of the basil EO was low or inexistent.…”

Section: Resultscontrasting

confidence: 79%

“…According to the authors, these compounds are responsible for the peculiar aroma of basil and have antioxidant and antimicrobial activities. Linalool and estragole were also the major compounds of the basil EO in studies carried out in India (Elansary et al, 2016;Pandey et al, 2016;Padalia et al, 2017;Tiwari et al, 2017) and Canada (Elansary et al, 2016).…”

Section: Resultsmentioning

confidence: 97%

“…The authors observed a significant increase (2 to 4.7 times) in the dry mass production of mint and oregano plants when submitted to AMF inoculation. In a recent study, the co-inoculation of the AMF Glomus aggregatum and the fungus Trichoderma harzanium was tested in basil plants, which resulted in increased plant growth and EO production (Tiwari et al, 2017). The authors also observed that this co-inoculation more than doubled the SDM production of basil plants.…”

Section: Resultsmentioning

confidence: 99%

“…Few studies are found in the literature on the effects of AMF inoculation on the growth and production of essential oil (EO) of basil. In a recent study, Tiwari et al (2017) co-inoculated the AMF Glomus aggregatum and the fungus Trichoderma harzanium in basil and concluded that this interaction can reduce the negative effects of nematodes and, at the same time, increase plant growth and EO production. In another study with basil, inoculation with the AMF Glomus intraradices and humic substance (HS) addition (as vermicomposting) also increased the plant growth by 56% and the EO production by up to 48% (Verma et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Antimicrobial activity of essential oil and growth of Ocimum basilicum (L.) inoculated with mycorrhiza and humic substances applied to soil

Morelli¹,

Ferarrese²,

Munhoz³

et al. 2017

Genet. Mol. Res.

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ABSTRACT. Mycorrhizal association increases the absorption of water and nutrients by plants, and thus, affects their metabolism. This study aimed at assessing the single and conjoint effects of the arbuscular mycorrhizal fungus (AMF) Claroideoglomus etunicatum and soil's humic substances (HS) on the composition of essential oil (EO), its antimicrobial activity, and development of basil (Ocimum basilicum L.). The experimental design was completely randomized in a 2 x 2-factorial design (with and without AMF and HS) with 10 replications as follows: T1 -without AMF inoculation and without HS addition; T2 -with AMF inoculation and with HS (2 L/ha); T3 -without AMF inoculation and with HS; T4 -with AMF inoculation and with HS. Plants were grown in pots with 5 kg sterile soil in a greenhouse for 6 months. Then, they were harvested and evaluated for spore density, AMF root colonization, shoot dry matter (SDM), yield and chemical composition of EO as well as minimum inhibitory concentration, used to compare the antimicrobial effect of EO in nine bacteria. The addition of HS to the soil increased the spore density of AMF and SDM (P < 0.001). The AMF inoculation with and without HS increased the EO yield of basil (P < 0.001). The treatments altered the composition of the basil EO, in which a total of fourteen compounds were detected. In treatments with AMF and/or HS, linalool (28.64 to 42.94%) and estragole (27.53 to 47.17%) were the major compounds. However, in the control (without AMF and HS), eugenol (33.90%) was the major compound. The EO showed low microbial activity against bacteria Bacillus cereus, Salmonella enterica serovar typhi, Shigella flexneri, Klebsiella pneumoniae, and Xanthomonas axonopodis pathovar begoniae. AMF inoculation and HS addition could improve the development of basil, increase EO yield, alter the EO chemical composition and its major compounds, but presented low or none microbial activity against most of the bacteria tested in this study.

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Diseases of Basil

McGovern

2023

Handbook of Vegetable and Herb Diseases

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Biocontrol agents in co-inoculation manages root knot nematode [ Meloidogyne incognita (Kofoid & White) Chitwood] and enhances essential oil content in Ocimum basilicum L.

Cited by 44 publications

References 22 publications

Insights into the Role of Streptomyces hydrogenans as the Plant Growth Promoter, Photosynthetic Pigment Enhancer and Biocontrol Agent against Meloidogyne incognita in Solanum lycopersicum Seedlings

Insights into the Role of Streptomyces hydrogenans as the Plant Growth Promoter, Photosynthetic Pigment Enhancer and Biocontrol Agent against Meloidogyne incognita in Solanum lycopersicum Seedlings

Antimicrobial activity of essential oil and growth of Ocimum basilicum (L.) inoculated with mycorrhiza and humic substances applied to soil

Diseases of Basil

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