温室代表了Alternaria alternata的一个重要的进化
Guangzhu Yang1,2,3, Sai Cui1,2, Wenjing Huang3
1State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming, Yunnan, China.
Microbiology spectrum
|May 10, 2024
概括
温室环境对土壤真菌Alternaria alternata的遗传多样性和抗三醇性有重大影响. 当地温室隔离导致遗传变异,与大地理距离类似,突出显示了对粮食安全的威胁.
科学领域:
- 环境微生物学环境微生物学
- 植物病理学 植物病理学
- 菌类遗传学 菌类遗传学
背景情况:
- Alternaria alternata是一种无处不在的土壤传播的真菌,导致植物和偶尔的人类疾病.
- 在全球范围内,温室种植正在增加,但其对土壤微生物病原体 (如A. alternata) 的影响尚不清楚.
- 之前的研究表明,温室真菌种群存在可变差异,但局部隔离的作用尚不清楚.
研究的目的:
- 在温室中调查土壤传播的Alternaria alternata的种群遗传结构和抗真菌易感性.
- 为了比较来自中国东北部和西南部温室的A. alternata种群的遗传多样性和三醇耐药性.
- 评估温室隔离对A. alternata.遗传变异的影响.
主要方法:
- 从中国东北部石家庄的七个温室中分离出 Alternaria alternata 菌株.
- 孤立菌株的遗传多样性和三醇敏感性的分析.
- 与来自中国西南部昆明9个温室的242个隔离品进行了比较.
主要成果:
- 温室种群的A. alternata表现出高比例的耐药性农业特醇杀菌剂和医学特醇药物,包括交叉耐药性.
- 当地温室隔离 (<1公里) 对总体遗传变异的贡献与大地理距离 (>2,000公里) 相似.
- 温室是三醇耐药性的重要来源,耐药菌株的频率各不相同.
结论:
- 温室环境充当重要的生态,促进A. alternata.中的遗传变异和三醇耐药性.
- 观察到的遗传差异表明,即使靠近的温室也可以容纳不同的种群.
- 温室气体中的A. alternata种群对粮食安全和人类健康构成新兴威胁,原因是广泛的三醇耐药性.
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