与Acrocomia aculeata相关的可种植的根内菌及其对植物病原性oomycetes的对抗性活性
Jaqueline Aparecida de Oliveira1, Fábio Alex Custódio2, Olinto Liparini Pereira3
1Departamento de Microbiologia, Universidade Federal de Viçosa, Viçosa, 36570-900, Minas Gerais, Brazil.
概括
来自澳门棕树根的内菌被选为生物控制剂. 两个真菌分离物,Talaromyces sayulitensis和Epicoccum italicum,显示出对菌种植物病原体的显著对抗.
科学领域:
- 农业科学 农业科学
- 植物病理学 植物病理学
- 生物技术是生物技术.
背景情况:
- 澳门棕 (Acrocomia aculeata) 是巴西的一种有价值的产油棕,对生物柴油,化品和食品行业至关重要.
- 可持续的种植实践,包括再生农业,对于澳门棕的开采至关重要,需要替代化学农药.
- 最近,Phytophthora palmivora已经成为一种病原体,在澳门棕树苗中引起根和茎腐烂,由于化学控制的局限性,这给管理带来了挑战.
研究的目的:
- 探索与健康的澳门棕树根相关的可培养内菌的社区.
- 选这些内性真菌对潜在的生物控制剂 (BCA) 针对植物病原性菌.
- 确定有前途的真菌分离物,以可持续地对澳门棕的疾病进行管理.
主要方法:
- 用灭绝培养技术从澳门的棕树根中分离出了内菌.
- 总共获得了250个分离物,并使用双培养试验对46个被选为对抗oomycetes的对抗活性.
- 选择的分离物经过了植物遗传学分析来识别,并评估了它们对Phytophthora和Pythium物种的有效性.
主要成果:
- 两个内性真菌分离物,被确定为Talaromyces sayulitensis COAD 3605和Epicoccum italicum COAD 3608,表现出显著的对抗性活性.
- 这两种分离物对已测试的植物病原性菌体具有高达82%的抑制作用,包括Phytophthora heterospora,Phytophthora palmivora,Pythium aphanidermatum和Pythium deliense.
- 在46个选的分离物中,只有这两个对所有测试的菌体表现出广泛的对抗性.
结论:
- 塔拉罗米塞斯 (Talaromyces sayulitensis) 和埃皮科克 (Epicoccum italicum) 是有希望的生物控制剂,用于管理澳门的虫病.
- 这些内性真菌代表了一种可持续的,生物技术替代化学农药,用于澳门棕种植.
- 需要进一步的实地研究来证实这些内植物在现实条件下控制虫诱导疾病的有效性.
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