Ting He^1,2 , Taiguo Liu² , Wanquan Chen² , Qingyun Guo¹ , Li Gao²

1 Key Laboratory of Agricultural Integrated Pest Management, Scientific Observing and Experimental Station of Crop Pests in Xining, Ministry of Agriculture and Rural Affairs, Key Laboratory of Qinghai-Tibetan Plateau Biotechnology, Ministry of Education, Academy of Agricultural and Forestry Sciences, Qinghai University, Xining, 810016, China
2 State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
Author    Correspondence author
Molecular Pathogens, 2020, Vol. 11, No. 4   doi: 10.5376/mp.2020.11.0004
Received: 19 Nov., 2020    Accepted: 20 Nov., 2020    Published: 27 Nov., 2020

This article was first published in Genomics and Applied Biology in Chinese, and here was authorized to translate and publish the paper in English under the terms of Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

To reveal the effect of Tilletia foetida (Wallr.) Liro on defense enzymes activities in wheat stems, leaves and ears, the cultivar 'Dongxuan 3' highly sensitive to wheat common bunt and 'Yinong 18 / Lankao Aizao 8' highly resistant to wheat dwarf bunt were used as test materials to study the activities of catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD) after 0~6 days of infection by the Tilletia foetida. The results showed that the activities of defense enzymes of the two wheat varieties were significantly increased. Except for the increase of CAT activity in the leaves of susceptible varieties, the activities of POD and SOD in stems and spikes of resistant varieties were higher than those of susceptible varieties, and the enzyme activities of resistant varieties lasted for a long time and the change range was more gentle. The activity of defense enzyme in the leaves of the two cultivars was higher than that in the stems and spikes, CAT and POD activity in the spikes showed the earliest peak of enzyme activity. All the three kinds of defense enzymes were correlated with disease resistance of wheat, which could provide theoretical basis for breeding resistance to common bunt of wheat.

Wheat; Tilletia foetida; Catalase (CAT); Peroxydase (POD); Superoxide dismutase (SOD)