Scholarlink

<p>Corn Kernel samples (<i>n</i> = 10) intended for animal feed production were collected from two regions of Brazil and all samples were highly infected with <i>Aspergillus</i> spp. (92.8%), <i>Fusarium</i> sp. (2.9%) and other genera (4.3%). <i>Aspergillus</i> section <i>Aspergillus</i> was predominant (80.6%), followed by <i>Aspergillus</i> section <i>Flavi</i> (16%) and <i>Aspergillus</i> section <i>Cremei</i> (3.4%). A total of 53 representative isolates, were selected for analysis of genetic profile resulting in five clusters, of which members of each cluster were identified by regions of the <i>BenA</i> and <i>CaM</i> genes. The I cluster allocated isolates of <i>A.</i> section <i>Flavi</i>, identified as <i>A. flavus</i>/<i>A. oryzae</i> group (<i>n</i> = 28). The II and III clusters allocated isolates of <i>A.</i> section <i>Aspergillus</i>, which were identified as <i>A. chevalieri</i> (<i>n</i> = 17) and <i>A. montevidensis</i> (<i>n</i> = 4). Cluster IV allocated isolates of <i>Aspergillus</i> section <i>Cremei</i>, identified as <i>A. dimorphicus</i> (<i>n</i> = 1) and <i>A. wentii</i> (<i>n</i> = 1) while V cluster isolates of the <i>Fusarium</i> sp. were identified as <i>F. verticillioides</i> (<i>n</i> = 2). This study is the first to report a higher occurrence of <i>Aspergillus</i> section <i>Aspergillus</i> in corn kernels, represented by <i>A. chevalieri</i> and <i>A. montevidensis</i>. The prevalence of both <i>Aspergillus</i> section <i>Aspergillus</i> species was associated with low corn kernel a<sub>w</sub>, to the detriment of potentially mycotoxin-producing <i>Aspergillus</i> section <i>Flavi</i> species. The ecological dynamics of these fungi in corn kernels is important for monitoring and control measures of corn kernels.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

High occurrence of Aspergillus section Aspergillus in corn kernels for feed production

  • 期刊论文

  • 发表日期：

    2025年9月23日

查看全文
  • Mauro César Piotto de Lima,
  • Dâmaris Cristine Landgraf,
  • Sara Mataroli de Godoy,
  • Daniele Cassiano Feliciano,
  • Claudete de Fátima Ruas,
  • Marina Venturini Copetti,
  • Daniele Sartori

摘要

Corn Kernel samples (n = 10) intended for animal feed production were collected from two regions of Brazil and all samples were highly infected with Aspergillus spp. (92.8%), Fusarium sp. (2.9%) and other genera (4.3%). Aspergillus section Aspergillus was predominant (80.6%), followed by Aspergillus section Flavi (16%) and Aspergillus section Cremei (3.4%). A total of 53 representative isolates, were selected for analysis of genetic profile resulting in five clusters, of which members of each cluster were identified by regions of the BenA and CaM genes. The I cluster allocated isolates of A. section Flavi, identified as A. flavus/A. oryzae group (n = 28). The II and III clusters allocated isolates of A. section Aspergillus, which were identified as A. chevalieri (n = 17) and A. montevidensis (n = 4). Cluster IV allocated isolates of Aspergillus section Cremei, identified as A. dimorphicus (n = 1) and A. wentii (n = 1) while V cluster isolates of the Fusarium sp. were identified as F. verticillioides (n = 2). This study is the first to report a higher occurrence of Aspergillus section Aspergillus in corn kernels, represented by A. chevalieri and A. montevidensis. The prevalence of both Aspergillus section Aspergillus species was associated with low corn kernel aw, to the detriment of potentially mycotoxin-producing Aspergillus section Flavi species. The ecological dynamics of these fungi in corn kernels is important for monitoring and control measures of corn kernels.