The prospects for the study of the avirulence genes characteristic for the West Siberian population of wheat stem rust Puccinia graminis f. sp. tritici

Poster (download) Vasiliy Kelbin1, Ekaterina Sergeeva2, Ekaterina Skolotneva3, Elena Salina41IC&G SB RAS, kelbin@bionet.nsc.ru2IC&G SB RAS, sergeeva@bionet.nsc.ru3IC&G SB RAS, skolotnevaes@bionet.nsc.ru4IC&G SB RAS, salina@bionet.nsc.ru Wheat stem rust is a plant disease caused by pathogenic fungus Puccinia graminis f. sp. tritici which leads to significant damage of the crop. During the last decade the disease affected the crops in West Siberia. The plant response to infection is determined by the correspondence of host resistance (Sr) and fungus avirulence/virulence (Avr/vr) genes. We first characterized the West Siberian population of wheat stem rust: the probable sources of infection were traced, the race composition and main avirulence genes were defined. Four fungal lines with contrasting patterns of Avr genes were selected for whole genomic sequencing.

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Application of neural networks to image recognition of wheat rust diseases

Poster (download) Mikhail Genaev11Mikhail Genaev ICG SB RAS, Kurchatov Genomic Center, Novosibirsk, Russia NSU, Novosibirsk, Russia, mag@bionet.nsc.ru Rust diseases of cereals are caused by pathogenic fungi and can significantly reduce plant productivity. Many cultures are subject to them. The disease is difficult to control on a large scale, so one of the most relevant approaches is crop monitoring, which helps to identify the disease at an early stage and make efforts to prevent its spread. One of the most effective methods of control is the identification of the disease from digital images that obtained by a smartphone camera. In this paper, we present a deep learning algorithm that uses a digital image of wheat plants to determine whether they are affected by a disease and, if so, what type: leaf rust or stem rust. The algorithm based on the convolution neural network of the densenet architecture. The resulting model demonstrates high accuracy of classification: the measure of accuracy F1 on the validation sample is 0.9, the AUC averaged over 3 classes is 0.98.

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