Influence of Hybrid Class and Ensiling Duration on Deoxynivalenol Accumulation and Its Derivative Deoxynivalenol-3-Glucoside While Ensiling Corn for Silage.

IF 4.4 2区农林科学 Q1 PLANT SCIENCES

Plant disease Pub Date : 2024-12-09 DOI:10.1094/PDIS-06-24-1166-RE

Maxwell O Chibuogwu, Hannah Reed, Carol L Groves, Brian Mueller, Gregory Barrett-Wilt, Richard Wade Webster, John Goeser, Damon L Smith

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引用次数: 0

Abstract

In silage corn (Zea mays L.), Fusarium graminearum causes diseases and produces the mycotoxin deoxynivalenol (DON). The work presented here investigated DON accumulation and its fate during the ensiling of ground, whole-plant material obtained from dual-purpose (DP) and brown midrib (BMR) corn hybrids. Multiyear field trials arranged in a randomized complete block design were conducted in Wisconsin to evaluate BMR and DP corn hybrids in response to fungicide treatment. At harvest, the samples were chopped and vacuum sealed for a mini-silo time series assessment with silos opened following anaerobic fermentation for 0, 30, 60, 90, and 120 days. Repeated measures analysis of ensiled corn showed that hybrid (P < 0.01) and ensiling duration (P < 0.01) significantly impacted DON concentration through ensiling, whereas fungicide treatment had no significant effect (P > 0.05). Across hybrids and treatments, DON concentrations detected at harvest were the lowest with DON-3-glucoside at harvest significantly (P < 0.01) and highly correlated (r = 0.74) with DON concentration 30-days after ensiling. These findings suggest that mycotoxin testing in corn should include not only DON but also conjugates of DON that can be metabolized back to DON and increase the final DON concentration during ensiling.

查看原文本刊更多论文

玉米青贮时杂交种等级和青贮时间对脱氧雪腐镰刀菌烯醇及其衍生物脱氧雪腐镰刀菌烯醇-3-葡萄糖苷积累的影响

在青贮玉米（Zea mays L.）中，禾本科镰刀菌（Fusarium graminearum）会导致疾病并产生霉菌毒素脱氧雪腐镰刀菌醇（DON）。本文介绍的研究工作调查了从两用玉米（DP）和棕色中肋玉米（BMR）杂交种中获得的地面全株材料在青贮过程中 DON 的积累及其归宿。威斯康星州采用随机完全区组设计进行了多年田间试验，以评估 BMR 和 DP 玉米杂交种对杀菌剂处理的反应。收获时，将样品切碎并真空密封，进行小型筒仓时间序列评估，在厌氧发酵 0、30、60、90 和 120 天后打开筒仓。对酶解玉米的重复测量分析表明，杂交种（P < 0.01）和酶解持续时间（P < 0.01）对酶解过程中的 DON 浓度有显著影响，而杀菌剂处理则没有显著影响（P > 0.05）。在所有杂交种和处理中，收获时检测到的 DON 浓度最低，收获时的 DON3G 与贮藏后 30 天的 DON 浓度有明显相关性（P < 0.01），且相关性很高（r = 0.74）。这些研究结果表明，玉米霉菌毒素检测不仅应包括 DON，还应包括 DON 的轭合物，这些轭合物可在腐熟过程中代谢回 DON 并增加最终的 DON 浓度。

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来源期刊

Plant disease 农林科学-植物科学

CiteScore

5.10

自引率

13.30%

发文量

1993

审稿时长

2 months

期刊介绍： Plant Disease is the leading international journal for rapid reporting of research on new, emerging, and established plant diseases. The journal publishes papers that describe basic and applied research focusing on practical aspects of disease diagnosis, development, and management.