State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou, China.
Department of Health Sciences, Faculty of Medicine and Health Sciences, University of Mauritius, Reduit, Mauritius.
Front Cell Infect Microbiol. 2021 Feb 10;10:604504. doi: 10.3389/fcimb.2020.604504. eCollection 2020.
A novel species of , proposed as . sp.nov was isolated from soil collected in Linzhi Town, Linzhi County, Tibet Autonomous Region, China. DNA sequence analyses from eight different gene regions indicate that the isolate represents a novel species and most closely related to . . The phylogenetic analysis based on a concatenated dataset of three genes, ITS, , and , also confirmed the placement of the novel species within the section of the genus . Differences in morphology among similar species are detailed and single gene phylogenies based on ITS, and genes as well as a multi-loci gene phylogeny are presented. Cultural studies were performed to study inhibitory activities on plant pathogens. The results reveal a notable antifungal activity against causing rice blast with an inhibition rate up to 77%, while for other three citrus pathogens, , , and , inhibition rate was 40, 50, and 55% respectively. No noticeable effects were observed for , , and . Interestingly, unlike other reported members of , . showed no antagonistic effect on root rotting fungi. The new taxon isolated here has the potential to be used as a biocontrol agent especially for economically important phytopathogens or emerging pathogens on diseases occurring on citrus or rice.
一种新的, 被提议作为. sp.nov 是从中国西藏自治区林芝县林芝镇采集的土壤中分离出来的。来自 8 个不同基因区域的 DNA 序列分析表明，该分离株代表了一个新的物种，与.. 最为密切相关。基于三个基因的串联数据集（ITS、 和 ）的系统发育分析也证实了该新种在属的 节内的位置。详细描述了相似种之间的形态差异，并提供了基于 ITS、 和 基因的单基因系统发育以及多基因座基因系统发育。进行了文化研究以研究对植物病原体的抑制活性。结果表明，该新种对引起稻瘟病的病原菌具有显著的抗真菌活性，抑制率高达 77%，而对其他三种柑橘病原菌 、 和 的抑制率分别为 40%、50%和 55%。对 、 和 没有明显的影响。有趣的是，与其他报道的 成员不同，. 对根腐真菌没有拮抗作用。这里分离出的新分类单元有可能被用作生物防治剂，特别是对柑橘或水稻上发生的经济上重要的植物病原菌或新兴病原菌。
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