Phenolic signals for prehaustorium formation in Striga hermonthica

doi:10.3389/fpls.2022.1077996

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	Phenolic signals for prehaustorium formation in Striga hermonthica
	Aoki, Natsumi; Cui, Songkui; Ito, Chiharu; Kumaishi, Kie; Kobori, Shungo; Ichihashi, Yasunori; Yoshida, Satoko
	2022
发表期刊	FRONTIERS IN PLANT SCIENCE
卷号	13 页码:1077996
摘要	Striga hermonthica is a root parasitic plant that causes considerable crop yield losses. To parasitize host plants, parasitic plants develop a specialized organ called the haustorium that functions in host invasion and nutrient absorption. The initiation of a prehaustorium, the primitive haustorium structure before host invasion, requires the perception of host-derived compounds, collectively called haustorium-inducing factors (HIFs). HIFs comprise quinones, phenolics, flavonoids and cytokinins for S. hermonthica; however, the signaling pathways from various HIFs leading to prehaustorium formation remain largely uncharacterized. It has been proposed that quinones serve as direct signaling molecules for prehaustorium induction and phenolic compounds originating from the host cell wall are the oxidative precursors, but the overlap and distinction of their downstream signaling remain unknown. Here we show that quinone and phenolic-triggered prehaustorium induction in S. hermonthica occurs through partially divergent signaling pathways. We found that ASBr, an inhibitor of acetosyringone in virulence gene induction in the soil bacterium Agrobacterium, compromised prehaustorium formation in S. hermonthica. In addition, LGR-991, a competitive inhibitor of cytokinin receptors, inhibited phenolic-triggered but not quinone-triggered prehaustorium formation, demonstrating divergent signaling pathways of phenolics and quinones for prehaustorium formation. Comparisons of genome-wide transcriptional activation in response to either phenolic or quinone-type HIFs revealed markedly distinct gene expression patterns specifically at the early initiation stage. While quinone DMBQ triggered rapid and massive transcriptional changes in genes at early stages, only limited numbers of genes were induced by phenolic syringic acid. The number of genes that are commonly upregulated by DMBQ and syringic acid is gradually increased, and many genes involved in oxidoreduction and cell wall modification are upregulated at the later stages by both HIFs. Our results show kinetic and signaling differences in quinone and phenolic HIFs, providing useful insights for understanding how parasitic plants interpret different host signals for successful parasitism.
关键词	striga prehaustorium phenolics quinone parasitic plants AGROBACTERIUM VIRULENCE GENES HAUSTORIUM DEVELOPMENT QUINONE OXIDOREDUCTASE PARASITIC ANGIOSPERMS PLANT MECHANISM ACTIVATION KINASE
DOI	10.3389/fpls.2022.1077996
收录类别	SCI
WOS记录号	WOS:000900102600001
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/75633
专题	中国科学院昆明植物研究所
推荐引用方式 GB/T 7714	Aoki, Natsumi,Cui, Songkui,Ito, Chiharu,et al. Phenolic signals for prehaustorium formation in Striga hermonthica[J]. FRONTIERS IN PLANT SCIENCE,2022,13:1077996.
APA	Aoki, Natsumi.,Cui, Songkui.,Ito, Chiharu.,Kumaishi, Kie.,Kobori, Shungo.,...&Yoshida, Satoko.(2022).Phenolic signals for prehaustorium formation in Striga hermonthica.FRONTIERS IN PLANT SCIENCE,13,1077996.
MLA	Aoki, Natsumi,et al."Phenolic signals for prehaustorium formation in Striga hermonthica".FRONTIERS IN PLANT SCIENCE 13(2022):1077996.

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