Nitrogen sources enhance siderophore-mediated competition for iron between potato common scab and late blight causative agents

Author:

Stulanovic NudzejmaORCID,Kerdel Yasmine,Rezende Lucas,Deflandre Benoit,Burguet Pierre,Belde Loïc,Denoel Romane,Tellatin Déborah,Rigolet Augustin,Hanikenne Marc,Quinton Loïc,Ongena Marc,Rigali SébastienORCID

Abstract

AbstractHow do pathogens colonizing the same host interact with each other? We evaluated here the types of interactions taking place betweenStreptomyces scabieiandPhytophthora infestans, the causative agents of common scab and late blight diseases on potato crops, respectively. Under most conditions testedS.scabieiimpaired or completely inhibited the growth ofP.infestansby producing either soluble and/or volatile compounds. Media component analysis revealed that increasing peptone levels correlated with increased inhibition ofP.infestans. Comparative metabolomics showed that production ofS.scabieisiderophores (desferrioxamines, pyochelin, scabichelin and turgichelin) increased with the quantity of peptone thereby suggesting that they participate in the inhibition of the oomycete growth. Mass spectrometry imaging further uncovered that the zones of secreted siderophores and ofP.infestansgrowth inhibition coincided. Moreover, either the repression of siderophore production or the neutralization of the iron-chelating activity of siderophores both led to a resumption ofP.infestansgrowth. Importantly, replacement of peptone by natural nitrogen sources such as sodium nitrate, ammonium sulfate, and urea also triggered siderophore production inS.scabiei. Overall, our work further emphasizes the importance of competition for iron between microorganisms that colonize the same niche. As common scab never alters the biological function of tubers, we propose thatS.scabiei, under certain conditions, could play a protective role for its hosts against much more destructive pathogens through exploitative iron competition and volatile compound production.Graphical abstract

Publisher

Cold Spring Harbor Laboratory

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3