Identification of Pathogens and Evaluation of Resistance and Genetic Diversity of Maize Inbred Lines to Stalk Rot in Heilongjiang Province, China

Liu, Jinxin; Han, Yang; Li, Wenqi; Qi, Tiancong; Zhang, Jiuming; Li, Yonggang

doi:10.1094/pdis-03-22-0525-re

Cited by 4 publications

(1 citation statement)

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“…Notes : Fusarium temperatum was first reported as a pathogen on maize in Belgium ( Scauflaire et al 2011 ), and subsequently on humans in Mexico ( Al-Hatmi et al 2014 ). In China, its ability to cause maize ear rot and maize stalk rot have been confirmed by Zhang et al (2014c) and Liu et al (2022b) . Notably, the existence of sexual reproduction of F. temperatum in the field ( Scauflaire et al 2011 ), together with the semipermeable species boundary with its relative species F. subglutinans ( Fumero et al 2021 ), may facilitate the genetic recombination and further contribute to the high genetic diversity of F. temperatum .…”

Section: Resultsmentioning

confidence: 95%

Fusarium diversity associated with diseased cereals in China, with an updated phylogenomic assessment of the genus

Han

Wang

et al. 2023

Studies in Mycology

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Fusarium species are important cereal pathogens that cause severe production losses to major cereal crops such as maize, rice, and wheat. However, the causal agents of Fusarium diseases on cereals have not been well documented because of the difficulty in species identification and the debates surrounding generic and species concepts. In this study, we used a citizen science initiative to investigate diseased cereal crops (maize, rice, wheat) from 250 locations, covering the major cereal-growing regions in China. A total of 2 020 Fusarium strains were isolated from 315 diseased samples. Employing multi-locus phylogeny and morphological features, the above strains were identified to 43 species, including eight novel species that are described in this paper. A world checklist of cereal-associated Fusarium species is provided, with 39 and 52 new records updated for the world and China, respectively. Notably, 56 % of samples collected in this study were observed to have co-infections of more than one Fusarium species, and the detailed associations are discussed. Following Koch’s postulates, 18 species were first confirmed as pathogens of maize stalk rot in this study. Furthermore, a high-confidence species tree was constructed in this study based on 1 001 homologous loci of 228 assembled genomes (40 genomes were sequenced and provided in this study), which supported the “narrow” generic concept of Fusarium (= Gibberella). This study represents one of the most comprehensive surveys of cereal Fusarium diseases to date. It significantly improves our understanding of the global diversity and distribution of cereal-associated Fusarium species, as well as largely clarifies the phylogenetic relationships within the genus.

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