期刊
NEW PHYTOLOGIST
卷 204, 期 2, 页码 424-433出版社
WILEY
DOI: 10.1111/nph.12909
关键词
coinfection; host susceptibility; nutrient; pathogen interactions; RNA virus; stoichiometry; vectored plant pathogen
资金
- NSF program in Ecology and Evolution of Infectious Disease [DEB-1015805]
- Division Of Environmental Biology
- Direct For Biological Sciences [1015791, 1015805] Funding Source: National Science Foundation
- Division Of Environmental Biology
- Direct For Biological Sciences [1015909] Funding Source: National Science Foundation
The rates and ratios of environmental nutrient supplies can determine plant community composition. However, the effect of nutrient supplies on within-host microbial interactions is poorly understood. Resource competition is a promising theory for understanding microbial interactions, because microparasites require nitrogen (N) and phosphorus (P) for synthesis of macromolecules such as nucleic acids and proteins. To better understand the effects of nutrient supplies to hosts on pathogen interactions, we singly inoculated and coinoculated Avena sativa with two virus species, barley yellow dwarf virus-PAV (BYDV-PAV) and cereal yellow dwarf virus-RPV (CYDV-RPV). Host plants were grown across a factorial combination of N and P supply rates that created a gradient of N:P supply ratios, one being replicated at low and high nutrient supply. Nutrient supply affected prevalence and the interaction strength among viruses. P addition lowered CYDV-RPV prevalence. The two viruses had a distinct competitive hierarchy: the coinoculation of BYDV-PAV lowered CYDV-RPV infection rate, but the reverse was not true. This antagonistic interaction occurred at low nutrient supply rates and disappeared at high N supply rate. Given the global scale of human alterations of N and P cycles, these results suggest that elevated nutrient supply will increase risks of virus coinfection with likely effects on virus epidemiology, virulence and evolution.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据