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Identification of Wheat Stripe Rust Inoculum Sources and Dispersal Routes Responsible for Initial Rust Establishment in Southern Henan of China

文献类型： 外文期刊

作者： Wang, Aolin 1 ; Cao, Shiqin 4 ; Peng, Hong 5 ; Jiang, Ru 1 ; Zhang, Meihui 1 ; Nie, Xiao 1 ; Xu, Fei 6 ; Huang, Liang 1 ; Sun, Zhenyu 4 ; Hu, Xiaoping 2 ; Liu, Wei 1 ; Fan, Jieru 1 ; Zhou, Yilin 1 ; Xu, Xiangming 7 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China

2.Northwest A&F Univ, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Peoples R China

3.Northwest A&F Univ, Coll Plant Protect, Yangling 712100, Peoples R China

4.Gansu Acad Agr Sci, Inst Plant Protect, Lanzhou 730070, Peoples R China

5.Henan Plant Protect & Plant Quarantine Stn, Zhengzhou 450002, Peoples R China

6.Henan Acad Agr Sci, Inst Plant Protect, Key Lab Integrated Pest Management Crops Southern, Minist Agr & Rural Affairs Peoples Republ China, Zhengzhou 450002, Peoples R China

7.NIAB East Malling, West Malling ME19 6BJ, Kent, England

关键词： aeromycology; backward-trajectory calculations; epidemiological investigation; migration routes; source identification; wheat stripe rust

期刊名称：PLANT DISEASE （ 影响因子：4.4； 五年影响因子：4.8 ）

ISSN： 0191-2917

年卷期： 2025 年 109 卷 2 期

页码：

收录情况： SCI

摘要： Wheat stripe rust (yellow rust), caused by Puccinia striiformis f. sp. tritici (Pst), is an important airborne disease worldwide. Pst inoculum strength in southern Henan in winter or early spring is important for spring epidemics in the main autumn-sown wheat-growing regions of China. However, there is limited knowledge about the source and time of initial infection on winter wheat in southern Henan. The first occurrence of wheat stripe rust in southern Henan was recorded annually from 2011 to 2022, from which we used the backward trajectory approach to infer the likely source of Pst inoculum responsible for the initial disease occurrence. The results suggested that the Pst inoculum responsible for initial rust established in the winter in southern Henan originated from the Gansu Pst oversummering area in China, whereas it originated from the adjacent winter Pst sporulation regions in southern Shaanxi and northwestern Hubei if Pst symptoms were first observed in early spring in southern Henan. Another possible Pst source is southern Hubei where Pst can also sporulate in the winter. Thus, early Pst development in winter in the main wheat production region in China (Henan) is likely to be caused by Pst inoculum spread from the oversummering inocula or Pst epidemics in autumn seedlings in Gansu.

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