Stem parasitic plant Cuscuta australis (dodder) transfers herbivory-induced signals among plants
Hettenhausen,Christian; Li,Juan; Zhuang,Huifu; Sun,Huanhuan; Xu,Yuxing; Qi,Jinfeng; Zhang,Jingxiong; Lei,Yunting; Qin,Yan; Sun,Guiling; Wang,Lei; Baldwin,Ian T.; Wu,Jianqiang
2017
Source PublicationPROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN0027-8424
Volume114Issue:32Pages:E6703-E6709
AbstractCuscuta spp. (i.e., dodders) are stem parasites that naturally graft to their host plants to extract water and nutrients; multiple adjacent hosts are often parasitized by one or more Cuscuta plants simultaneously, forming connected plant clusters. Metabolites, proteins, and mRNAs are known to be transferred from hosts to Cuscuta, and Cuscuta bridges even facilitate host-to-host virus movement. Whether Cuscuta bridges transmit ecologically meaningful signals remains unknown. Here we show that, when host plants are connected by Cuscuta bridges, systemic herbivory signals are transmitted from attacked plants to unattacked plants, as revealed by the large transcriptomic changes in the attacked local leaves, undamaged systemic leaves of the attacked plants, and leaves of unattacked but connected hosts. The interplant signaling is largely dependent on the jasmonic acid pathway of the damaged local plants, and can be found among conspecific or hetero-specific hosts of different families. Importantly, herbivore attack of one host plant elevates defensive metabolites in the other systemic Cuscuta bridge-connected hosts, resulting in enhanced resistance against insects even in several consecutively Cuscuta-connected host plants over long distances (> 100 cm). By facilitating plant-to-plant signaling, Cuscuta provides an information-based means of countering the resource-based fitness costs to their hosts.
KeywordNicotiana-attenuata Jasmonate Synthesis Insect Herbivores Host Plants Helminth Infection Arabidopsis Defense System Acid Root Cuscuta Parasitic Plant Systemic Defense Herbivore Jasmonic Acid
Subject AreaMultidisciplinary Sciences
DOI10.1073/pnas.1704536114
Indexed BySCI
Language英语
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Cited Times:11[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/54920
Collection植物化学与西部植物资源持续利用国家重点实验室
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GB/T 7714
Hettenhausen,Christian,Li,Juan,Zhuang,Huifu,et al. Stem parasitic plant Cuscuta australis (dodder) transfers herbivory-induced signals among plants[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(32):E6703-E6709.
APA Hettenhausen,Christian.,Li,Juan.,Zhuang,Huifu.,Sun,Huanhuan.,Xu,Yuxing.,...&Wu,Jianqiang.(2017).Stem parasitic plant Cuscuta australis (dodder) transfers herbivory-induced signals among plants.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(32),E6703-E6709.
MLA Hettenhausen,Christian,et al."Stem parasitic plant Cuscuta australis (dodder) transfers herbivory-induced signals among plants".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.32(2017):E6703-E6709.
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