Parasite dodder enables transfer of bidirectional systemic nitrogen signals between host plants
Zhang,Jingxiong; Xu,Yuxing; Xie,Jing; Zhuang,Huifu; Liu,Hui; Shen,Guojing; Wu,Jianqiang
Source PublicationPLANT PHYSIOLOGY
AbstractDodder (Cuscuta spp., Convolvulaceae) is a genus of parasitic plants with worldwide distribution. Dodders are able to simultaneously parasitize two or more adjacent hosts, forming dodder-connected plant clusters. Nitrogen (N) deficiency is a common challenge to plants. To date, it has been unclear whether dodder transfers N-systemic signals between hosts grown in N-heterogeneous soil. Transcriptome and methylome analyses were carried out to investigate whether dodder (Cuscuta campestris) transfers N-systemic signals between N-replete and N-depleted cucumber (Cucumis sativus) hosts, and it was found that N-systemic signals from the N-deficient cucumber plants were rapidly translocated through C. campestris to the N-replete cucumber plants. Unexpectedly, certain systemic signals were also transferred from the N-replete to N-depleted cucumber hosts. We demonstrate that these systemic signals are able to regulate large transcriptome and DNA methylome changes in the recipient hosts. Importantly, N stress also induced many long-distance mobile mRNA transfers between C. campestris and hosts, and the bilateral N-systemic signaling between N-replete and N-depleted hosts had a strong impact on the inter-plant mobile mRNAs. Our N-15 labeling experiment indicated that under N-heterogeneous conditions, N-systemic signals from the N-deficient cucumber hosts did not obviously change the N-uptake activity of the N-replete cucumber hosts; however, in plant clusters comprising C. campestris-connected cucumber and soybean (Glycine max) plants, if the soybean plants were N-starved, the cucumber plants exhibited increased N-uptake activity. This study reveals that C. campestris facilitates plant-plant communications under N-stress conditions by enabling extensive bilateral N-systemic signaling between different hosts.
WOS IDWOS:000649356200011
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Document Type期刊论文
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, Dept Econ Plants & Biotechnol, Yunnan Key Lab Wild Plant Resources, Kunming 650201, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, CAS Ctr Excellence Biot Interact, Beijing 100049, Peoples R China
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GB/T 7714
Zhang,Jingxiong,Xu,Yuxing,Xie,Jing,et al. Parasite dodder enables transfer of bidirectional systemic nitrogen signals between host plants[J]. PLANT PHYSIOLOGY,2021,185(4):1395-1410.
APA Zhang,Jingxiong.,Xu,Yuxing.,Xie,Jing.,Zhuang,Huifu.,Liu,Hui.,...&Wu,Jianqiang.(2021).Parasite dodder enables transfer of bidirectional systemic nitrogen signals between host plants.PLANT PHYSIOLOGY,185(4),1395-1410.
MLA Zhang,Jingxiong,et al."Parasite dodder enables transfer of bidirectional systemic nitrogen signals between host plants".PLANT PHYSIOLOGY 185.4(2021):1395-1410.
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