Screening of antagonistic Trichoderma strains and their application for controlling stalk rot in maize

【Author】

LU Zhi-xiang;TU Guang-ping;ZHANG Ting;LI Ya-qian;WANG Xin-hua;ZHANG Quan-guo;SONG Wei;CHEN Jie;School of Agriculture and Biology,Shanghai Jiao Tong University;Plant Protection College,Shenyang Agricultural University;Institute of Cereal and oil Crops,Hebei Academy of Agriculture and Forestry Sciences;State Key Laboratory of Microbial Metabolism,Shanghai Jiao Tong University;Key Laboratory of Urban Agriculture,Ministry of Agriculture;

【Institution】

School of Agriculture and Biology,Shanghai Jiao Tong University;Plant Protection College,Shenyang Agricultural University;Institute of Cereal and oil Crops,Hebei Academy of Agriculture and Forestry Sciences;State Key Laboratory of Microbial Metabolism,Shanghai Jiao Tong University;Key Laboratory of Urban Agriculture,Ministry of Agriculture;

【Abstract】

Maize is one of the major crops in China, but maize stalk rot occurs nationwide and has become one of the major challenges in maize production in China. In order to find an environment-friendly and feasible technology to control this disease, a Trichoderma-based biocontrol agent was selected. Forty-eight strains with various inhibition activities to Fusarium graminearum, and Fusarium verticillioides were tested. A group of Trichoderma strains(DLY31, SG3403, DLY1303 and GDFS1009) were found to provide an inhibition rate to pathogen growth in vitro of over 70%. These strains also prevented pathogen infection over 65% and promoted the maize seedling growth for the main root in vivo by over 50%. Due to its advantage in antifungal activity against pathogens and promotion activity to maize, Trichoderma asperellum GDSF1009 was selected as the most promising strain of the biocontrol agent in the Trichoderma spectrum. Pot experiments showed that the Trichoderma agent at 2–3 g/pot could achieve the best control of seedling stalk rot and promotion of maize seedling growth. In the field experiments, 8–10 g/hole was able to achieve over 65% control to stalk rot, and yield increased by 2–11%. In the case of natural morbidity, the control efficiency ranged from 27.23 to 48.84%, and the rate of yield increase reached 11.70%, with a dosage of Trichoderma granules at 75 kg ha~(-1). Based on these results, we concluded that the Trichoderma agent is a promising biocontrol approach to stalk rot in maize.

【Keywords】

stalk rot in maize;;biocontrol;;Trichoderma;;Fusarium;;granules

References

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Total: 6 articles

  • [1] Wu Xiaoru;Chen Shuowen;Yang Yuhong;Wang Yonghong;Liu Yan;Chen Jie;College of Biological Science and Technology,Shenyang Agricultural University;School of Agriculture and Biology,Shanghai Jiaotong University;Shanghai Dajing Biological Engineering Co.,Ltd.;Ningxia Academy of Agrculture and Forestry Sciences;, Application of Trichoderma granules in the control of corn stalk rot, Journal of Plant Protection,
  • [2] Ma Hongxia;Zhang Haijian;Sun Hua;Shi Jie;Chen Dan;Guo Ning;Plant Protection Institute of Hebei Academy of Agricultural and Forestry Sciences,IPM Centre of Hebei Province,Key Laboratory of IPM on Crops in Northern Region of North China,Ministry of Agriculture;, Comparison of pathogen detection methods for corn stalk rot, Plant Protection,
  • [3] DUAN Hai-ming;YU Li;HUANG Wei-dong;YU Hai-bing;College of Agriculture,Anhui Science and Technology University;, Inhibitory activity of six fungicides to Fusarium graminearum maize stalk rot at different temperatures and mixture screening with antagonistic bacteria fermentation supernatant, Jiangsu Journal of Agricultural Sciences,
  • [4] S. Chandra Nayaka;;S. R. Niranjana;;A.C. Uday Shankar;;S. Niranjan Raj;;M. S. Reddy;;H. S. Prakash;;C. N. Mortensen, Seed biopriming with novel strain of Trichoderma harzianum for the control of toxigenic Fusarium verticillioides and fumonisins in maize, Archives Of Phytopathology And Plant Protection,

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