Verseuchung vonLeptoglossus gonagra(Fabr.) mitNematospora coryliPeglion undAshbya gossypii(Ashby et Nowell) Guilliermond in einer Zitrusanlage der Republik Kuba

Dammer, Karl‐Heinz; Ravelo, Horacio Grillo

doi:10.1080/03235409009438945

Cited by 9 publications

(4 citation statements)

References 4 publications

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“…The diameter of the salivary duct (8.32 ìm) and the food channel (12.48 ìm) of L. gonagra is insufficient to allow passage of these vegetative cells. Subsequent research (Dammer & Grillo 1990) showed both N. coryli and A. gossypii to be present in heads and mouthparts of a high proportion of adults (51 and 43%) as well as nymphs of L. gonagra. The same combination of fungi causes coffee bean rot, and is transmitted by Antestiopsis spp.…”

Section: Fungimentioning

confidence: 99%

Heteroptera as vectors of plant pathogens

Mitchell¹

2004

Neotrop. Entomol.

117

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Heterópteros Como Vetores de Patógenos de PlantasRESUMO -A habilidade de insetos picadores-sugadores em transmitir doenças para as plantas está intimamente relacionada ao modo de alimentação e ao tecido alvo. Os percevejos são considerados de importância econômica mínima como vetores de patógenos de plantas, embora tenham comportamento alimentar semelhante aos homópteros. Os modos de alimentação em Heteroptera incluem "dilaceração e bombeamento", penetração intracelular no tecido vascular, e um mecanismo de bomba osmótica para adquirir os conteúdos celulares sem penetrar a membrana celular. A relação entre a taxonomia dos heterópteros, modo de alimentação e o tipo de patógeno transmitido é explorada através de um levantamento bibliográfico. A transmissão por percevejos de fungos, bactérias, vírus, fitoplasmas e trypanossomatídeos flagelados é sumarizada. Os trypanossomatídeos flagelados de plantas parecem ser hospedados ou transmitidos exclusivamente por Pentatomomorpha (Lygaeioidea, Coreoidea, Pentatomoidea, e Pyrrhocoroidea). A transmissão de bactérias e fungos ocorre entre famílias de ambas infraordens, mas representantes de Miridae (Cimicomorpha) são mais associados com bactérias, enquanto os de Pentatomidae e Coreidae (Pentatomomorpha) predominam como transmissores de fungos. Alguns casos de transmissão de fitoplasmas e vírus são documentados, mas Cimicomorpha (tradicionalmente categorizados como alimentadores do tipo dilacerador-bombeador) estão representados mais freqüentemente do que o esperado, considerando-se a especificidade por determinados tecidos vegetais desses patógenos. A ênfase da literatura sobre a exclusividade ou predominância do papel dos homópteros como transmissores de doenças pode arrefecer o ímpeto inicial em estudar os percevejos como transmissores; entretanto, os resultados apresentados aqui indicam a necessidade de incluir os percevejos em levantamentos de potenciais transmissores de doenças.

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Section: Fungimentioning

confidence: 99%

Heteroptera as vectors of plant pathogens

Mitchell¹

2004

Neotrop. Entomol.

117

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“…Insect vectors, predominantly those with pierce-sucking mouthparts such as the Heteroptera, are essential for the transmission of this fungus, as the fungus itself is unable to penetrate the outer cells of healthy fruits and seeds unless a mechanical injury occurs (Batra, 1973;Pridham and Raper, 1950). Since the most important mode of infection requires insects to transport and inject spores or mycelial fragments into the tissue of the plant (Batra, 1973;Pridham and Raper, 1950), the control of the insect population by insecticides has proven efficient in preventing the dissemination of A. gossypii (Dammer and Ravelo, 1990). …”

Section: Habitatmentioning

confidence: 99%

Ashbya gossypii beyond industrial riboflavin production: A historical perspective and emerging biotechnological applications

Aguiar

Silva

Domingues

2015

Biotechnology Advances

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The filamentous fungus Ashbya gossypii has been safely and successfully used for more than two decades in the commercial production of riboflavin (vitamin B2). Its industrial relevance combined with its high genetic similarity with Saccharomyces cerevisiae together promoted the accumulation of fundamental knowledge that has been efficiently converted into a significant molecular and in silico toolbox for its genetic engineering. This synergy has enabled a directed and sustained exploitation of A. gossypii as an industrial riboflavin producer. Although there is still room for optimizing riboflavin production, the recent years have seen an abundant advance in the exploration of A. gossypii for other biotechnological applications, such as the production of recombinant proteins, single cell oil and flavour compounds. Here, we will address the biotechnological potential of A. gossypii beyond riboflavin production by presenting (a) a physiological and metabolic perspective over this fungus; (b) the molecular toolbox available for its manipulation; and (c) commercial and emerging biotechnological applications for this industrially important fungus, together with the approaches adopted for its engineering.

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“…free radicals, apparently overcompensated for the photoprotective effect. The stigmatomycosis caused by A. gossypii leads to yellow spots on plants (Batra, 1973;Dammer and Ravelo, 1990), suggesting that riboflavin is produced in planta. Riboflavin uptake by ascospores was not investigated but, in mycelium, a carrier-mediated uptake of high affinity (k M 40^12 mM) and low activity (V max 20^4 nmol min 21 g 21 biomass) was detectable in a riboflavin auxotroph but not in a prototroph (Fo È rster et al, 2001).…”

Section: Ultraviolet Sensitivity Of Spores and Effect Of Riboflavinmentioning

confidence: 99%

“…We tried unsuccessfully to obtain infected plants from scientists working with phytopathogenic fungi throughout the tropics. The stigmatomycosis caused by A. gossypii leads to yellow spots on plants (Batra, 1973;Dammer and Ravelo, 1990), suggesting that riboflavin is produced in planta. A further argument is that starvation seems to be the only requirement for a switch to overproduction because mycelium was shown to overproduce riboflavin when suspended in a buffer lacking nutrients (Mitsuda et al, 1977) through mobilization of intracellular reserve lipids (Stahmann et al, 1994).…”

Section: Ultraviolet Sensitivity Of Spores and Effect Of Riboflavinmentioning

confidence: 99%

Riboflavin, overproduced during sporulation of Ashbya gossypii, protects its hyaline spores against ultraviolet light

Stahmann

Arst

Althöfer³

et al. 2001

Environmental Microbiology

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Riboflavin (vitamin B2), essential in tiny amounts as a precursor for oxidoreductase coenzymes, is a yellow pigment. Although it causes cytotoxicity via photoinduced damage of macromolecules, several microorganisms are striking overproducers. A question, unanswered for decades, is whether riboflavin overproducers can benefit from this property. Here, we report an ultraviolet (UV) protective effect of riboflavin. The spores of Ashbya gossypii, a riboflavin-overproducing fungus, are more sensitive to UV than those of Aspergillus nidulans. The addition of riboflavin to suspensions improves the UV resistance of both spore types. Interestingly, we show that regulation of sporulation and riboflavin overproduction in A. gossypii are linked. In batch culture, both were elevated when growth ceased. At constant growth rates, obtained in a chemostat culture, neither was elevated. Supplementation of cultures by cAMP, a known stress signal, negatively affected sporulation as well as riboflavin overproduction, establishing a second, independent argument for the linkage.

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Verseuchung vonLeptoglossus gonagra(Fabr.) mitNematospora coryliPeglion undAshbya gossypii(Ashby et Nowell) Guilliermond in einer Zitrusanlage der Republik Kuba

Cited by 9 publications

References 4 publications

Heteroptera as vectors of plant pathogens

Heteroptera as vectors of plant pathogens

Ashbya gossypii beyond industrial riboflavin production: A historical perspective and emerging biotechnological applications

Riboflavin, overproduced during sporulation of Ashbya gossypii, protects its hyaline spores against ultraviolet light

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