Effects of gamma irradiation on long-storage seeds of Oryza sativa (cv. 2233) and their surface infecting fungal diversity

Maity, Jyoti Prakash; Kar, Saibal; Banerjee, Soumik; Chakraborty, Anindita; Santra, S. C.

doi:10.1016/j.radphyschem.2009.06.002

Cited by 22 publications

(14 citation statements)

References 23 publications

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“…Germination rates decreased with increasing radiation dose and storage time. Maity et al (2009) investigated the effect of gamma irradiation dose (1-6 kGy) on long-term rice seed germination and reported similar results. However, the authors in that study examined seed germination following irradiation, whereas in the present study, seed germination was evaluated in seeds that had been harvested from plants that were grown from irradiated seeds, and therefore the detected effects are a result of changes to the physiology or genetic makeup of seeds caused by radiation that affected the performance of mature plants and their seeds.…”

Section: Resultsmentioning

confidence: 79%

High gamma irradiation doses and long storage times reduce soybean seed quality

Nobre

Sediyama

Arthur

et al. 2016

SCA

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High quality seeds are required for soybean production. This study evaluated the effect of gamma irradiation and storage time on seed quality in soybean lines VX04-6828 and VX04-5692. Seeds were gamma irradiated ( 60 Co) with 0, 50, 150, and 250 Gy. After the first seed production cycle (M1), the harvested seeds were stored in the laboratory for 0, 2, 4, and 6 months. Moisture content, seed quality (germination rate, dead seeds, and normal and abnormal seedlings), and seed vigor (first germination count, germination index, and seedling length) were determined. Data were submitted to analysis of variance for each soybean line using a 4 x 4 factorial design (four storage times x four gamma irradiation doses). Response surfaces were constructed based on the F test significance (p ≤ 0.05). VX04-5692 seeds were more sensitive to gamma radiation than were VX04-6828 seeds. Soybean seed quality was highest in M2 seeds derived from seeds irradiated with less than 100 Gy and stored for up to two months. High gamma irradiation doses and long storage times reduced soybean seed quality. Key words: Germination. Glycine max. Gamma radiation. Vigor. ResumoSementes de elevada qualidade fisiológica são necessárias à produção e à comercialização da soja. Portanto, avaliaram-se os efeitos da radiação gama e do armazenamento na qualidade fisiológica de sementes das linhagens de soja VX04-6828 e VX04-5692. As sementes dessas linhagens foram irradiadas com 0, 50, 150 e 250 Gy de radiação gama ( 60 Co). Após o primeiro ciclo de produção (M1), as sementes foram armazenadas em condições laboratoriais e avaliadas aos 0, 2, 4 e 6 meses, quanto ao teor de água das sementes e à qualidade fisiológica, por meio dos testes de germinação (plântulas normais, anormais e sementes mortas) e de vigor (primeira contagem de germinação, índice de velocidade de germinação e comprimento das plântulas). Os resultados foram submetidos à análise de variância para cada linhagem, utilizando-se o modelo fatorial 4 x 4 (quatro tempos de armazenamento x quatro doses de radiação gama). Com base no teste F (p < 0,05), foi realizado o ajuste de superfícies de resposta. As sementes da linhagem VX04-5692 são mais sensíveis à radiação gama que da linhagem Vx04-6828. Melhor qualidade fisiológica das sementes M2 de soja é expressa em doses inferiores a 100 Gy e armazenadas até 2 meses. Doses elevadas de radiação gama e longo período de armazenamento reduzem a qualidade fisiológica das sementes de soja. Palavras-chave: Germinação. Glycine max. Radiação gama. Vigor.

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Section: Resultsmentioning

confidence: 79%

High gamma irradiation doses and long storage times reduce soybean seed quality

Nobre

Sediyama

Arthur

et al. 2016

SCA

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“…were found to be completely inhibited at a gamma exposure of 1 kGy while Aspergillus spp. survived up to 3 kGy in rice . More recently, Maity et al observed that 100% growth inhibition of A. flavus occurred at 3 kGy ( P < 0.05) when fungus‐infected rice was exposed to gamma radiation.…”

Section: Resultsmentioning

confidence: 99%

“…Also, it is important to point out that the use of radiation treatment is complementary to good manufacturing practices and may constitute a strategy that could be applied together with other methodologies to prevent and control the presence of toxigenic fungi . In the last decade, several studies have reported the application of gamma radiation on different cereals such as wheat, barley, rice, maize and sorghum to control microbial growth . The results showed that the response to radiation depends on various factors, including cereal type, microorganism type, initial microbial load, irradiation dose and dose rate.…”

Section: Introductionmentioning

confidence: 99%

Inactivation effect of electron beam irradiation on fungal load of naturally contaminated maize seeds

Nemţanu

Braşoveanu

Karaca

et al. 2014

J. Sci. Food Agric.

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“…After irradiation, the detection of molds had not significantly changed during storage periods of 6 and 12 mo. Maity and others (; ) also evaluated the effect of gamma‐irradiation on the fungal diversity of rice seeds during storage periods up to 12 mo. The growth of isolated fungi was completely inhibited during this period with a 3‐kGy dose, and no change in the germination potential was noted with doses ranging from 2 to 4 kGy.…”

Section: Irradiation To Control Mold Growth and Mycotoxinsmentioning

confidence: 99%

Irradiation for Mold and Mycotoxin Control: A Review

Calado

Venâncio

Abrunhosa

2014

Comp Rev Food Sci Food Safe

136

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The mycotoxin issue requires constant vigilance from economic, regulatory, and scientific agents to minimize its toxicological effects on human and animals. The implementation of good practices to avoid fungal growth and mycotoxin production on agricultural commodities is essential to achieve most restrictive safety standards; however, the contribution of novel technologies that may act on postharvesting and poststorage situations may be equally important. Several methodologies, more or less technologically advanced, may be used for this purpose. In this work, we review the role, contribution, and impact of irradiation technology to control the presence of fungi and mycotoxins in food and in feed. The effect of this technology on the viability of mold spores and on the elimination of mycotoxins is reviewed. A critical evaluation of the advantages and disadvantages of irradiation in this context is presented.

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Effects of gamma irradiation on long-storage seeds of Oryza sativa (cv. 2233) and their surface infecting fungal diversity

Cited by 22 publications

References 23 publications

High gamma irradiation doses and long storage times reduce soybean seed quality

High gamma irradiation doses and long storage times reduce soybean seed quality

Inactivation effect of electron beam irradiation on fungal load of naturally contaminated maize seeds

Irradiation for Mold and Mycotoxin Control: A Review

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