γ 射线对感染真菌的大米（体外）的影响。

Effects of gamma radiation on fungi infected rice (in vitro).

机构信息

Department of Environmental Science, University of Kalyani, Nadia, India.

出版信息

Int J Radiat Biol. 2011 Nov;87(11):1097-102. doi: 10.3109/09553002.2011.606288. Epub 2011 Sep 22.

DOI:10.3109/09553002.2011.606288

PMID:21781005

Abstract

PURPOSE

This work focuses on the effect of gamma radiation on seed born fungi (in vitro) on Oryza sativa (Swarna, Initial Evaluation Trial-5656).

MATERIALS AND METHODS

The responses of fungi to gamma radiation (0-4.2 kGy; 0.12 kGy/h) were studied in individual cultures of major seed-borne fungi including Alternaria alternata, Aspergillus flavus, Trichoderma viride and Curvularia geniculata.

RESULTS

The inactivation of individual fungal-viability was noted between 1.0-2.0 kGy for A. alternata and A. flavus and 0.5-1.0 kGy for T. viride and C. geniculata. Complete inhibition was observed at <2.5 kGy. Formations of multiple germ tubes were noted in A. alternata and A. flavus at 2 kGy and 2.5 kGy, respectively. A. flavus required a higher dose to reduce viability to 10% (D(10)) value in comparison to other selected fungi.

CONCLUSIONS

Different fungi exhibited different radiosensitivity. The dose range of 2-2.5 kGy was effective in killing all selected fungi. The fungi showing a higher D(10) value exhibited multiple germ tubes.

摘要

目的

本研究专注于γ 射线对水稻种子携带真菌（体外）的影响（Swarna，初始评价试验-5656）。

材料与方法

在包括链格孢菌（Alternaria alternata）、黄曲霉（Aspergillus flavus）、绿色木霉（Trichoderma viride）和新月弯孢菌（Curvularia geniculata）在内的主要种子携带真菌的单一培养物中，研究了真菌对γ 射线（0-4.2 kGy；0.12 kGy/h）的反应。

结果

在 1.0-2.0 kGy 时，链格孢菌和黄曲霉的单个真菌活力失活，在 0.5-1.0 kGy 时，绿色木霉和新月弯孢菌的真菌活力失活。<2.5 kGy 时观察到完全抑制。在 2 kGy 和 2.5 kGy 时，链格孢菌和黄曲霉分别出现多个芽管的形成。与其他选定的真菌相比，黄曲霉需要更高的剂量才能将活力降低到 10%（D(10)）值。