Foliar fungal diseases respond differently to nitrogen and phosphorus additions in Tibetan alpine meadows

NWIPB OpenIR

	Foliar fungal diseases respond differently to nitrogen and phosphorus additions in Tibetan alpine meadows
	Liu, Xiang; Lu, Yawen; Zhang, Zhenhua; Zhou, Shurong
	2019
发表期刊	ECOLOGICAL RESEARCH
卷号	35 期号:1
摘要	The effects of nitrogen addition on fungal diseases in agroecosystems have been widely documented, while largely unknown is how phosphorus fertilization will affect foliar fungal diseases in natural ecosystems. Here, we implemented a factorial experiment with nitrogen and phosphorus addition in an alpine meadow of the Qinghai-Tibetan Plateau to test the effects of nutrition fertilization on foliar fungal diseases severity (i.e., % of the leaf area that was covered by fungal lesions) at plant species-, family- and community-levels, respectively, and also among different disease types (biotroph vs. necrotroph). At plant species-level, nitrogen and phosphorus addition increased diseases severity for two and five plant species respectively. At plant family-level, nitrogen addition increased pathogen load on Poaceae plants, while phosphorus fertilization increased pathogen load on Scrophulariaceae. Moreover, we found that addition of both nitrogen (p = .034; coefficient = 0.436) and phosphorus (p = .012; coefficient = 0.622) increased pathogen load of biotrophic pathogens, but only nitrogen addition (p = .010; coefficient = 1.769) increased pathogen load induced by necrotrophic pathogens. At plant community-level, nitrogen addition (p = .009; coefficient = 0.218) alone, rather than phosphorus addition or the interaction of nitrogen and phosphorus addition, increased community pathogen load. We concluded that nitrogen addition affects foliar fungal diseases more than phosphorus at the community-level, and fungal diseases caused by necrotrophic pathogens were more sensitive to nitrogen addition.
关键词	community pathogen load fungal disease severity nitrogen addition nutrition fertilization phosphorus addition
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/60496
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Liu, Xiang,Lu, Yawen,Zhang, Zhenhua,et al. Foliar fungal diseases respond differently to nitrogen and phosphorus additions in Tibetan alpine meadows[J]. ECOLOGICAL RESEARCH,2019,35(1).
APA	Liu, Xiang,Lu, Yawen,Zhang, Zhenhua,&Zhou, Shurong.(2019).Foliar fungal diseases respond differently to nitrogen and phosphorus additions in Tibetan alpine meadows.ECOLOGICAL RESEARCH,35(1).
MLA	Liu, Xiang,et al."Foliar fungal diseases respond differently to nitrogen and phosphorus additions in Tibetan alpine meadows".ECOLOGICAL RESEARCH 35.1(2019).