Control of common bunt of wheat under field conditions with the biofumigant fungus Muscodor albus

Goates, Blair J.; Mercier, Jean

doi:10.1007/s10658-011-9817-z

Cited by 12 publications

(5 citation statements)

References 16 publications

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“…Tilletia caries causes common bunt of wheat and commonly interferes in the processes of the production of organically grown wheat. The VOCs of M. albus (Cz 620) were effective against Tilletia caries under field conditions [22,23].…”

Section: Role Of Muscodor Spp In Crop Protectionmentioning

confidence: 99%

Marvellous Muscodor spp.: Update on Their Biology and Applications

Saxena

Strobel

2020

Microb Ecol

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Nearly 20 years ago, the first report appeared on the discovery of a novel genus-Muscodor. This organism was isolated as an endophyte from a cinnamon tree that had been introduced to Honduras from Sri Lanka in the early part of the last century. Characteristically, the original Muscodor albus, and all of its species isolated since that time are non-spore producers and each one exudes a characteristic spectrum of volatile bioactive compounds. The majority have a whitish mycelium, which is sometimes coiling, intertwined and decorated with variously shaped structures. Presently, there are at least 22 type species known/ documented and each has been described as an endophyte from various plant families with widely varying habitats. An enormous variety of volatile organic compounds (VOCs) are produced by Muscodor spp. and some of these include esters, acids, aldehydes, ketones, aromatics, alkanes, alcohols, nitrosamides and terpenoids. The VOCs are both inhibitory and lethal to a wide variety of fungi and bacteria including some major pathogens of plants and humans. Interestingly, in almost all cases studied, no one compound by itself can mimic the bioactivity of the complete gas mixture, suggesting that the volatiles are acting in a synergistic manner and this has been tested with individual as well as the VOCs in various mixtures and concentrations. This review will discuss some of the recent findings in all aspects of this unique fungal genus whilst at the same time pointing out some of the major questions that remain about its biology, ecology and its applications in agriculture, medicine and other sectors. Most importantly, the authors provide arguments supporting the claim that Muscodor is taxonomically distinct from Induratia, a recently proposed change to its nomenclature.

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Section: Role Of Muscodor Spp In Crop Protectionmentioning

confidence: 99%

Marvellous Muscodor spp.: Update on Their Biology and Applications

Saxena

Strobel

2020

Microb Ecol

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“…Based on HS-SPME GC-MS analysis, 28 components were identified, representing 89.85% of PSK volatiles (Table 1). These volatiles belonged to alcohols (2), aldehydes (5), ketones (2), monoterpenes (18), and sesquiterpenes (1). Monoterpenes were the major components, accounting for 79.46% of the peak area.…”

Section: Components Of Psk Volatiles and Extractsmentioning

confidence: 99%

Prickly Ash Seed Kernel: A New Bio-Fumigation Material Against Tobacco Black Shank

et al. 2020

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The present study evaluated the fumigant effect and potential mechanisms of Chinese prickly ash seed kernel (PSK) against tobacco black shank caused by Phytophthora nicotianae Breda de Haan. The results showed that PSK fumigant increased the soil organic matter, hydrolysable nitrogen, available potassium, and total phosphorus significantly, while the pH was decreased. Application of 2% PSK promoted plant growth, with higher plant height, root length, and dry weight compared to those in the treatment with no PSK. Both in vitro and in vivo tests indicated that PSK fumigant effectively inhibited mycelial growth of P. nicotianae, and significantly reduced the severity of tobacco black shank. Based on the analysis of volatiles in PSK by headspace solid-phase microextraction (HS-SPME) gas chromatography-mass spectrometry (GC-MS), 28 components were identified, among which monoterpenes were the major components (accounting for 79.46% of peak area). Among the six top components, linalool, piperitone, sabinene, and limonene exhibited strong mycelial inhibition of P. nicotianae. Linalool was the most effective with an IC50 value of 18.03 μL/L. Results of GC-MS revealed that the main components of PSK extract were cis-Vaccenic acid (40.81%), n-Hexadecanoic acid (15.67%), 9,12-Octadecadienoic acid (Z,Z)- (15.25%), Ethanone-1-(2-hydroxy-4,6-dimethoxyphenyl)- (10.32%), cis-9-Hexadecenoic acid (6.21%), and Psilocin (11.75%). Among them, Ethanone-1-(2-hydroxy-4,6-dimethoxyphenyl)- and 9,12-Octadecadienoic acid (Z,Z)- have an obvious inhibitory effect on P. nicotianae. Additionally, changes in soil bacterial and fungal communities were observed. The relative abundance of some microbes, such as Pseudomonas, Azospirillum, Thermomonas, Glutamicibacter, Dyella, and Trichoderma, increased, which have many beneficial microbes in these genera, indicating that microbial community shift could be one of the important outcomes of the PSK fumigant effect. In conclusion, PSK could be a new bio-fumigation material against plant soilborne pathogens, which can function as both a fungicide and fertilizer.

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“…Numerous experimental and commercialized micro-organisms have been examined as seed treatments on wheat against common bunt (Hökeberg et al 1997;Koch et al 2004;Koch et al 2006;Goates and Mercier 2011). However, so far only the bacterium Pseudomonas chlororaphis MA342 has been commercialised and is marketed in Europe as an oil-based formulation (Cedomon®) for hulled seeds (like barley) and as a water-based formulation (Cerall®) for non-hulled seeds (like wheat).…”

Section: Common Bunt Of Wheatmentioning

confidence: 99%

Non-chemical Seed Treatment in the Control of Seed-Borne Pathogens

Koch¹,

Roberts²

2014

Global Perspectives on the Health of Seeds and Plant Propagation Material

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Non-chemical seed treatments include physical treatments, microbial treatments and treatments with other agents of natural origin like plant powders or extracts. Physical treatments with hot water, aerated steam, or dry heat have successfully been applied to a range of crops against a range of target pathogens and are in commercial use primarily for vegetable seeds. They can be very effective but need to be optimised on a per seed lot basis.Microbial seed treatments may control not only seed-borne pathogens but also provide some protection against pathogenic soil-borne inoculum. However, research on the use of micro-organisms as seed treatments has been limited, and there are only a few examples of commercial use. The latter is also true for botanical seed treatments, despite many reports of bactericidal and fungicidal effects of compounds from plants. The reason may be a lack of research on the one hand but mainly commercial constraints like development and registration costs in relation to market size.The current chapter gives an overview of approaches that have been taken to utilize the above-described non-chemical methods for control of important seedborne pathogens of vegetables and small grain cereals. The examples treated include bacterial (black rot of brassicas, pea bacterial blight, bacterial blotch of cucurbits, black chaff of cereals), fungal (Alternaria diseases of carrot, black leg of brassicas, common bunt of wheat, Fusarium seedling diseases of small grain cereals, the loose smuts of barley and wheat, fungal diseases of rice and sorghum) and important viral diseases.

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Control of common bunt of wheat under field conditions with the biofumigant fungus Muscodor albus

Cited by 12 publications

References 16 publications

Marvellous Muscodor spp.: Update on Their Biology and Applications

Marvellous Muscodor spp.: Update on Their Biology and Applications

Prickly Ash Seed Kernel: A New Bio-Fumigation Material Against Tobacco Black Shank

Non-chemical Seed Treatment in the Control of Seed-Borne Pathogens

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