Host specificity of a brazilian isolate ofAlternaria cassiae (Cenargen CG593) under greenhouse conditions

Pitelli, R.L.C.M.; Penariol, Mara Cristina; Pitelli, A. M. C. M.; Pitelli, Robinson Antônio

doi:10.1007/bf02981105

Cited by 3 publications

(2 citation statements)

References 8 publications

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“…Alternaria cassiae has wide geographic distribution in the tropical and subtropical region, as Asia (Jurair and Khan, 1960), North America (Walker and Boyette, 1982) and South America (Figueiredo et al, 1992). This fungi has a big importancy in the agroecosystem dynamic, especially, in the biological control of Senna obtusifolia (L.) (Pitelli et al, 2007) and it can be a good option as bioherbicide (Boyete et al, 2012). Besides, Alternaria is natural inhabitant of soil submited at organic or conventional manegement and for this it is exposed at pesticides (Prade et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Effects of Fungicides for Non Target Fungi Alternaria cassiae

Carraschi¹,

Cruz²,

Basile³

et al. 2017

IJEAB

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Section: Introductionmentioning

confidence: 99%

Effects of Fungicides for Non Target Fungi Alternaria cassiae

Carraschi¹,

Cruz²,

Basile³

et al. 2017

IJEAB

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“…By competing for light, moisture and nutrients the plants begin to influence the growth, development and productivity of the culture in which they settle, which may cause significant losses in production. 1 Although chemical control is an efficient and economically feasible measure to ensure the integrity of crops, inadequate use of pesticides can lead to problems like the death of non-target organisms (including natural enemies) and contamination of soil, water, food and man. 2 In addition, weeds can develop mechanisms of herbicide resistance, which in turn, requires the use of ever more powerful drugs and in greater quantities.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and phytotoxicity of 4,5 functionalized tetrahydrofuran-2-ones

Resende¹,

Alvarenga²,

Galindo³

et al. 2012

J. Braz. Chem. Soc.

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Neste trabalho relatamos uma síntese versátil de quatorze γ-lactonas análogas, dentre as quais nove são inéditas, a partir do furfural prontamente disponível. A atividade fitotóxica dos compostos sintetizados foi avaliada in vitro pela influência no crescimento de coleóptilos de trigo. A maior parte das porcentagens de inibição foi pequena e não diferenciou do controle após a terceira diluição (100 μmol L -1). Em geral, as lactonas α,β-insaturadas apresentaram melhor atividade que as saturadas. Os compostos mais ativos a 1000 μmol L -1 apresentaram inibições de 51, 68 e 76%. Os resultados indicam que, independentemente da saturação, a presença do anel γ-lactonônico é importante para a bioatividade, mas a sua presença não implica necessariamente boa potência.In this work we report a versatile synthesis of fourteen γ-lactones all structurally related, nine of which are novel compounds, accomplished from the readily available furfural. The phytotoxic activity of the synthesized compounds was evaluated in vitro by the influence on the growth of wheat coleoptiles. The percentages of inhibition were mostly small and not statistically different from control after the third dilution (100 μmol L -1 ). In general, α,β-unsaturated lactones presented better activities than the saturated ones. The most active compounds presented 51, 68 and 76% of inhibition in 1000 μmol L -1. The results indicate that regardless of saturation, the presence of the γ-lactone moiety is important for the bioactivity, but their presence has no implications with potency.

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Latin American weed biological control science at the crossroads.

Barreto¹

2008

Proceedings of the XII International Symposium on Biological Control of Weeds, La Grande Motte, France, 22-27 April, 2007

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Latin America is the centre of origin of many of the invasive alien weeds threatening natural and agricultural ecosystems throughout the world. As a result, it has been an important destination for expeditions in search of natural enemies for their control. Unfortunately, the role of local scientists has been mainly that of contracted explorers, cooperating on projects aimed at exploration for classical biological control agents. This is changing as the need to confront the growing threat from alien weeds in Latin America gathers pace. Nevertheless, with limited funding and a continuing ignorance by both the general public and the decision makers about the scale of the invasive weed problem in Latin America, target selection will be critical since this will determine the long-term viability of biological control in the region. In the proactive, new role to develop biological control in Latin America, should 'easy' targets be selected, for which there has been success on other continents, or instead, should targets be more challenging, potentially confrontational, such as African grasses which threaten not only the stability of unique ecosystems but which could also have global consequences? These issues will be discussed based on experiences gained from past and present collaborative projects. Latin American weed biological control: historical backgroundLatin America, including the Caribbean in this paper, is the centre of origin of many of the invasive alien weed threatening systems throughout the world. For instance, 59 of the 209 worst weeds on a worldwide scale are native to Latin America (Cronk and Fuller, 1995). They include aquatic weeds such as water hyacinth, Eichhornia crassipes (Mart.) Solms; alligator weed, Alternanthera philoxeroides (Mart.) Griseb.; capybara grass, Hymenachne aplexicaulis (Rudge) Nees; water lettuce, Pistia stratiotes L.; arrowhead, Sagittaria motevidensis Cham. and Schlecht.; and salvinia, Salvinia molesta D.S. Mitchell; and terrestrial weeds such as mistflower, Ageratina riparia (Regel) King and Robinson; Siam weed; Chromolaena odorata (L.) King and Robinson; lantana; Lantana camara L.; mile-a-minute Mikania micrantha H.B.K.; sensitive plant, Mimosa spp.; prickly pear, Opuntia spp.; strawberry guava, Psidium cattleianum Sabine; and Brazilian pepper tree, Schinus terebinthifolius Raddi.Latin America has played a major role in weed biological control since its inception at the beginning of the 20th century. Two early pioneering projects were involved in transcontinental transfers of natural enemies aimed at L. camara and Opuntia vulgaris Miller.

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Host specificity of a brazilian isolate ofAlternaria cassiae (Cenargen CG593) under greenhouse conditions

Cited by 3 publications

References 8 publications

Effects of Fungicides for Non Target Fungi Alternaria cassiae

Effects of Fungicides for Non Target Fungi Alternaria cassiae

Synthesis and phytotoxicity of 4,5 functionalized tetrahydrofuran-2-ones

Latin American weed biological control science at the crossroads.

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