Distribution of photo-induced and non-photo-induced sporulator physiotypes of Bipolaris oryzae in Japan

Kihara, Junichi; Ishikawa, Shiho; Kumagai, Tadashi

doi:10.1007/bf02460850

Cited by 6 publications

(5 citation statements)

References 20 publications

(24 reference statements)

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“…However, when a dark-grown colony is brie¯y exposed to near-UV radiation, conidiophore formation is induced in the narrow region of the mycelium produced just prior to illumination, and then conidia are formed on the conidiophores during subsequent growth in the dark (Leach 1961;Yamamura et al 1977). We found that conidiation in 99% of isolates of B. oryzae is induced by near-UV light (Kihara et al 1997). Furthermore, conidiation in certain fungi imperfecti, such as Ascochyta pisi (Leach and Trione 1965), Alternaria dauchi (Leach and Trione 1966), A. solani (Honda and Yunoki 1981), A. tomato (Kumagai 1983), A. cichorii (Vakalounakis 1986), Stemphylium solani (Sproston 1971), and Botrytis cinerea (Honda and Yunoki 1978) is also induced by exposure to near-UV light.…”

Section: Introductionmentioning

confidence: 95%

Molecular cloning, sequence analysis and expression of a novel gene induced by near-UV light in Bipolaris oryzae

et al. 2001

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A cDNA clone derived from a novel gene (uvi-1) that is inducible by near-UV light was isolated by a differential screening procedure from a cDNA library of the fungus Bipolaris oryzae and characterized further. Sequence analysis of the clone revealed that uvi-1 encodes a protein with a putative molecular mass of 17 kDa; the UVI-1 protein shows significant similarity to a putative protein encoded by a cDNA which is expressed during appressorium formation in the rice blast fungus, Magnaporthe grisea. The corresponding genomic clone was also isolated, and Southern analysis of genomic DNA indicated the presence of a single copy of the uvi-1 gene in B. oryzae. Northern analysis showed that the uvi-1 transcripts are induced by exposure to near-UV light, but not by blue or red light. Furthermore, accumulation of uvi-1 transcripts is observed during differentiation of the appressorium.

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Section: Introductionmentioning

confidence: 95%

Molecular cloning, sequence analysis and expression of a novel gene induced by near-UV light in Bipolaris oryzae

et al. 2001

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“…Kumagai (1978) reported that the manner of light response of plant pathogens could be classifiable into three categories. Some plant pathogenic fungi show different light responses among strains of the same species (Kihara et al 1997). By comparative genomics with other Aspergillus species, the ancestor of A. oryzae was assumed to be a plant pathogen (Kobayashi et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Transcriptome Analysis of Two Strains of <i>Aspergillus oryzae</i> with Different Responses to Light

Suzuki

Kusumoto

2020

JARQ

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The production process of such traditional Japanese fermented foods as miso, shoyu and sake using Aspergillus oryzae has been highly optimized over a long history. However, new technology is needed to achieve further improvements in productivity or production efficiency. Light affects the gene expression and metabolic pathways of fungi. Thus, the development of technology that takes advantage of the light response of A. oryzae is important. In a previous study, we found that A. oryzae strains RIB40 and RIB1187 showed opposing manners of growth and conidiation in response to light. To elucidate the effect of light on genome-wide gene expression for both strains, we conducted transcriptome analysis by RNA sequencing. We also identified 453 differentially expressed genes (DEGs) between both strains by bioinformatic analysis. Of these 453 DEGs, we identified a total of 67 light-responsive DEGs between RIB40 and RIB1187. We also analyzed the expression patterns of fermentation-related digestive enzyme genes.

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“…: Fr., it has been shown that sporulation is regulated by a reciprocal photoreaction involving BL and near-UV radiation (Vakalounakis and Christias, 1981;Kihara et al, 1997). These responses are triggered by a photoreceptor called "mycochrome" (Honda, 1969).…”

Section: Introductionmentioning

confidence: 99%

Photobiological Control of Crop Production and Plant Diseases

Kotzabasis

Navakoudis

Vakalounakis

2008

Zeitschrift Für Naturforschung C

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Plants, as well as fungi, use ambient sunlight as information to regulate photomorphogenetic processes. The photobiological control of this information showed that the development of photobiological greenhouse plastic covers simulates a photonic information that leads to a physiological enhancement of plant productivity and fungal disease control, thus minimizing the need for the use of agrochemicals. The main characteristics of these photobiological greenhouse plastic covers are the high transmission of photosynthetically active radiation (PAR, 400Ð700 nm) combined with an increase of the factor = RL (655Ð665 nm) /FRL (725Ð735 nm) , which affects the cellular phytochromic equilibrium Φ = Pfr/(Pfr + Pr) and regulates the photosynthetic activity and therefore the plant productivity. Additionally, increase of the spectral ratios from the transmitted light: BL (420Ð500 nm) /nearUV (290Ð370 nm) and BL (420Ð500 nm) / FRL (725Ð735 nm) , cause mainly the induction of biochemical, physiological and morphological responses, regulated by cryptochromes in plants (e. g. inflorescence and infructescence) and mycochrome in fungi (e. g. inhibition of sporulation). In the present work, comparative studies with randomly selected greenhouse plastics showed that small changes in the abovementioned "photobiological" parameters raise the productivity of tomato plants and inhibit the sporulation of several isolates of the fungal pathogen Botrytis cinerea. Thus, a model for the photoregulation of these two phenomena in greenhouses is proposed.

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Distribution of photo-induced and non-photo-induced sporulator physiotypes of Bipolaris oryzae in Japan

Cited by 6 publications

References 20 publications

Molecular cloning, sequence analysis and expression of a novel gene induced by near-UV light in Bipolaris oryzae

Molecular cloning, sequence analysis and expression of a novel gene induced by near-UV light in Bipolaris oryzae

Transcriptome Analysis of Two Strains of <i>Aspergillus oryzae</i> with Different Responses to Light

Photobiological Control of Crop Production and Plant Diseases

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