Insights From the ‘Black Box’: Survival Strategies of Wheat Rusts and Their Epidemiological Significance
2025
Vidal, Tiphaine | Sache, Ivan | Boixel, Anne‐lise | BIOlogie et GEstion des Risques en agriculture (BIOGER) ; Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) | AgroParisTech | ANR-17-EURE-0007,SPS-GSR,Ecole Universitaire de Recherche de Sciences des Plantes de Paris-Saclay(2017)
International audience
اظهر المزيد [+] اقل [-]إنجليزي. Survival between cropping seasons is a challenge for crop pathogens and can dramatically impact epidemic recurrence and adaptation to management strategies and environmental changes. However, the survival phase is often treated as a 'black box'. In this paper, we focus on the case of wheat rusts, which are among the most damaging diseases attacking wheat, a major crop worldwide. Though expert-based statements on rust survival are frequent, experimental evidence and quantitative observations that support these statements sometimes need clarification. The objective of this paper was to review available knowledge on the different processes involved in the survival of wheat rusts (considering stripe, leaf and stem rusts) and to assess their possibility of occurrence and probability. We focused on four main survival strategies reported in the literature: (i) sexual reproduction on alternate hosts, asexual reproduction on (ii) wild grasses related to wheat or (iii) volunteers and (iv) migration to more favourable areas during critical periods. Available reports suggest that all four strategies can occur considering all three wheat rusts. However, these processes can be complicated to detect due to the low probability of occurrence and significant variability in space and time. After a detailed description of available knowledge considering each process, we compare and contrast different survival strategies and discuss complementary methods available to tackle these questions. We suggest that using complementary methods would make it possible to better understand wheat rusts' survival and anticipate their epidemic potential in the context of global change.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
المعلومات البيبليوغرافية
تم تزويد هذا السجل من قبل Institut national de la recherche agronomique