The Mycoherbicide Approach with Plant Pathogens

Charudattan, R.

doi:10.1007/978-1-4615-9680-6_2

Cited by 115 publications

(55 citation statements)

References 93 publications

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“…No products are currently available in Europe. Two products, 'Collego' (Colletotrichum gloeosporioides) and 'DeVine' (Phytophthora palmivora) have been used in the USA [38]. Collego is a bioherbicide of northern jointvetch in soya beans and rice that was sold from 1982 to 2003 [39].…”

Section: Biopesticidesmentioning

confidence: 99%

The development, regulation and use of biopesticides for integrated pest management

Chandler

Bailey

Tatchell

et al. 2011

Phil. Trans. R. Soc. B

628

364

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Over the past 50 years, crop protection has relied heavily on synthetic chemical pesticides, but their availability is now declining as a result of new legislation and the evolution of resistance in pest populations. Therefore, alternative pest management tactics are needed. Biopesticides are pest management agents based on living micro-organisms or natural products. They have proven potential for pest management and they are being used across the world. However, they are regulated by systems designed originally for chemical pesticides that have created market entry barriers by imposing burdensome costs on the biopesticide industry. There are also significant technical barriers to making biopesticides more effective. In the European Union, a greater emphasis on Integrated Pest Management (IPM) as part of agricultural policy may lead to innovations in the way that biopesticides are regulated. There are also new opportunities for developing biopesticides in IPM by combining ecological science with post-genomics technologies. The new biopesticide products that will result from this research will bring with them new regulatory and economic challenges that must be addressed through joint working between social and natural scientists, policy makers and industry.

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Section: Biopesticidesmentioning

confidence: 99%

The development, regulation and use of biopesticides for integrated pest management

Chandler

Bailey

Tatchell

et al. 2011

Phil. Trans. R. Soc. B

628

364

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“…Biocontrol agents (BCAs) have been recognized not only as a replacement for chemical pesticides, but also as a viable part of well designed, integrated weed management systems, utilizing living organisms or plant pathogens to control or reduce the population of undesirable weed species (Charudattan, 1991(Charudattan, , 2001Christy et al, 1992;MullerScharer et al, 2000). Biological weed control is an approach utilizing living organisms to control or reduce the population of an undesirable weed species (Watson, 1991).…”

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confidence: 99%

Evaluation of a Fungal Strain, Myrothecium roridum F0252, as a Bioherbicide Agent

Lee¹,

Kim²,

Hong³

et al. 2008

The Plant Pathology Journal

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In the course of in vitro and in vivo screening for bioherbicidal agents, a hyphomycete fungus, Myrothecium sp. F0252 was selected as a candidate for the biocontrol of weeds. The isolate was identified as Myrothecium roridum Tode ex. Fries based on the morphological characteristics and 18S ribosomal DNA sequence analysis and registered as Myrothecium roridum F0252. In order to evaluate the in vitro effect of M. roridum F0252 on germination of ladino clover and white clover (Trifolium repens L.) seeds, spore solution of the fungus was employed in two concentrations, 6.5×10 6 and 2.5× 10 7 spores per mL and then inoculated to the seeds. The fungal spores inhibited the seed germination, infected the seedlings, and caused an abnormal withering and inhibition of seedling growth. In addition, when the herbicidal activity of crude ethyl acetate extract from the liquid culture was assessed on a mini-plant, duckweed (Lemna paucicostata (L.) Hegelm.), the extract showed high inhibitory effect at the level of 12.5 µg per mL. On the other hand, in vivo herbicidal activity of M. roridum F0252 was evaluated by a whole plant spray method. M. roridum F0252 exhibited strong and broadspectrum herbicidal activity. The herbicidal values ranged from 95-100% against 7 weeds, including Abutilon avicennae and Xanthium strumarium, and 70-80% against Digitaria sanguinalis and Sagittaria pygmaea. When the nutritional utilization (95 carbon sources) pattern of M. roridum F0252 was investigated, it varied with water activity (a w ) and temperature conditions, supplying good, basic information in regard to nutritional utilization for proper cultivation and formulation. Our results showed that M. roridum F0252 might be used as a potential biocontrol agent against weedy plants.

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“…A estratégia inundativa ou de bioherbicida preconiza a utilização de microrganismo de forma maciça sobre a população da planta daninha, para gerar rápido e alto nível de doença, com consequente morte ou supressão da espécie hospedeira (Charudattan, 1991). O sucesso do micoherbicida depende da produção abundante e durável do inóculo em cultura artificial, em que o patógeno deve ser geneticamente estável e específico para a espécie-alvo e não deve manifestar patogenicidade para a cultura de interesse, além de apresentar baixo custo de produção (Lima et al, 2010).…”

Section: Introductionunclassified

Fungos fitopatogênicos para biocontrole de Sagittaria montevidensis e seletividade para a cultura do arroz irrigado

Brunes

Oliveira

Lemes

et al. 2015

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi identificar, na micobiota de Sagittaria montevidensis, espécies de fungos fitopatogênicos com potencial bioherbicida, bem como avaliar sua seletividade para a cultura do arroz irrigado. Foram avaliadas as espécies de fungos Fusarium oxysporum e F. semitectum da micobiota de S. montevidensis e seis níveis de concentração de esporos (0, 1x10 3 , 1x10 4 , 1x10 5, 1x10 6 e 1x10 7 esporos mL -1 ), aplicados sobre plantas de S. montevidensis em estádio de uma folha sagitada e sobre plantas de arroz no estádio de desenvolvimento R4. Avaliou-se a progênie da cultura. Os isolados de F. oxysporum e F. semitectum apresentaram maior incidência sobre as plantas de S. montevidensis; porém, não foram eficazes no controle da espécie quando aplicados no estádio de plântula com uma folha sagitada. A aplicação de F. oxysporum e F. semitectum na fase de floração das plantas de arroz irrigado causa perdas no rendimento, redução no vigor das sementes produzidas e redução no comprimento radicular e da parte área.Termos para indexação: Oryza sativa, Sagittaria montevidensis, biocontrole de plantas daninhas. Pathogenic fungi for biocontrol of Sagittaria montevidensis and selectivity for irrigated rice cropAbstract -The objective of this work was to identify, in the mycobiota of Sagittaria montevidensis, species of pathogenic fungi with potential to act as a bioherbicide, as well as to evaluate their selectivity for irrigated rice crop. The fungi species Fusarium oxysporum and F. semitectum of the mycobiota of S. montevidensis and six spore concentration levels (0, 1x10 3 , 1x10 4, 1x10 5 , 1x10 6, and 1x10 7 spores mL -1 ), applied on S. montevidensis plants in the stage of one sagittate leaf and on rice plants in the R4 growth stage, were assessed. The progeny of the culture was evaluated. Isolates of F. oxysporum and F. semitectum had greater impact on S. montevidensis plants; however, they were not effective in controlling the species when applied in the seedling stage with one sagittate leaf. The application of F. oxysporum and F. semitectum in the flowering stage of irrigated rice plants causes yield losses, reduction in the vigor of produced seeds, and reduction in root length and plant shoot.

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The Mycoherbicide Approach with Plant Pathogens

Cited by 115 publications

References 93 publications

The development, regulation and use of biopesticides for integrated pest management

The development, regulation and use of biopesticides for integrated pest management

Evaluation of a Fungal Strain, Myrothecium roridum F0252, as a Bioherbicide Agent

Fungos fitopatogênicos para biocontrole de Sagittaria montevidensis e seletividade para a cultura do arroz irrigado

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