Título:	Elevated air temperature suppresses powdery mildew development in cowpea.
Autoria:	NASCIMENTO, L. A. do MACEDO, M. V. LUZ, T. A. SILVA, J, L. da SANTOS, C. B. dos AMARAL, S. C. do SILVA, W. O. da MELO, N. F. de HAMADA, E. ANGELOTTI, F.
Afiliação:	LAYANA ALVES DO NASCIMENTO, UNIVERSIDADE ESTADUAL DE FEIRA DE SANTANA; MÁRCIA VITÓRIA DE MACEDO, UNIVERSIDADE DE PERNAMBUCO; TAILANE AMORIM LUZ, UNIVERSIDADE DE PERNAMBUCO; JADSON LIMA DA SILVA, UNIVERSIDADE DE PERNAMBUCO; CAMILA BARBOSA DOS SANTOS, UNIVERSIDADE DE PERNAMBUCO; SAMUEL CAVALCANTE DO AMARAL, CPATSA; WESLLEY OLIVEIRA DA SILVA, UNIVERSIDADE ESTADUAL DE FEIRA DE SANTANA; NATONIEL FRANKLIN DE MELO, CPATSA; EMILIA HAMADA, CNPMA; FRANCISLENE ANGELOTTI, CPATSA.
Ano de publicação:	2026
Referência:	Plant Pathology, 75:e70197, 2026.
Conteúdo:	Cowpea production can be severely affected by powdery mildew, a disease whose epidemiology is highly influenced by envi-ronmental conditions. In the context of climate change, understanding the effects of increasing temperatures on disease devel-opment is essential. In this study, 12 cowpea cultivars were evaluated under two daily temperature regimes: 20°C min–26°Caverage–33°C max (current condition) and 24.8°C min–30.8°C average–37.8°C max (warming scenario, +4.8°C). The experimentwas conducted in growth chambers under a completely randomized design, with standardized inoculation. Evaluations wereconducted on disease severity, area under the disease progress curve (AUDPC), number of lesions per leaf, number of conidia percounting field and conidial germination. Increased temperature prolonged the incubation period (i.e., from 7 to 9 days) and sig-nificantly reduced disease severity, AUDPC, lesion number, number of conidia per counting field and germination. Multivariateanalysis indicated that temperature was the primary factor structuring disease response patterns, with limited differentiationamong cultivars under the warming scenario. No cultivar showed resistance to the powdery mildew. The reduction in diseasedevelopment is primarily attributed to the direct inhibitory effect of high temperature on pathogen development rather than toplant host resistance mechanisms. These results highlight the importance of temperature as a key driver of powdery mildewepidemiology under climate change conditions.
Thesagro:	Feijão Mudança Climática Doença Oídio Epidemiologia Vigna Unguiculata
NAL Thesaurus:	Climate change Epidemiology Powdery mildew Cowpeas
Palavras-chave:	Feijão caupi Erysiphe vignae Temperaturas do ar Desenvolvimento do oídio
Digital Object Identifier:	https://doi.org/10.1111/ppa.70197
Notas:	On-line.
Tipo do material:	Artigo de periódico
Acesso:	openAccess
Aparece nas coleções:	Artigo em periódico indexado (CPATSA)