State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, 311300, PR China.
State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, 311300, PR China.
Fungal Biol. 2020 Oct;124(10):864-876. doi: 10.1016/j.funbio.2020.07.002. Epub 2020 Jul 29.
To examine how host plant genotype, endophytic fungal species, and their interaction may affect growth and key chemical content and composition in an important orchid species, we assessed four Dendrobium catenatum cultivars co-cultured with three fungi previously isolated from D. catenatum. Fungal endophytes (Tulasnella sp., Leptosphaeria microscopica, and Guignardia sp.) specifically affected the growth and chemical composition of the four cultivars. Fungal infection significantly increased certain growth traits, especially mid-stem thickness, stem biomass, stem polysaccharide and ethanol-soluble extractive content, and leaf flavonoid and phenol content. Presence or abundance of some key chemical components was also altered by fungal treatment. These increases and alterations were highly dependent on the host genotype. The findings of this study contribute to our understanding of Dendrobium and endophytic fungi interactions, and provide vital information for improving the development and use of endophytic fungi in D. catenatum breeding.
为了研究宿主植物基因型、内生真菌物种及其相互作用如何影响重要兰花物种的生长和关键化学成分和组成，我们评估了四种与三种内生真菌共培养的铁皮石斛栽培品种。内生真菌（Tulasnella sp.、Leptosphaeria microscopica 和 Guignardia sp.）特异性地影响了四个栽培品种的生长和化学成分。真菌感染显著增加了某些生长特性，特别是中茎厚度、茎生物量、茎多糖和乙醇可溶性提取物含量以及叶类黄酮和酚类含量。一些关键化学成分的存在或丰度也被真菌处理所改变。这些增加和改变在很大程度上取决于宿主基因型。本研究的结果有助于我们理解铁皮石斛与内生真菌的相互作用，并为改善内生真菌在铁皮石斛育种中的开发和利用提供了重要信息。
