Parasite dodder enables transfer of bidirectional systemic nitrogen signals between host plants
| Autor: | Guojing Shen, Yuxing Xu, Huifu Zhuang, Jing Xie, Hui Liu, Jianqiang Wu, Jingxiong Zhang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Physiology PII Nitrogen Regulatory Proteins Plant Science Genes Plant 01 natural sciences Host-Parasite Interactions Transcriptome 03 medical and health sciences Focus Issue on Parasitic Plants Gene Expression Regulation Plant Botany Genetics Parasite hosting Host plants Gene 030304 developmental biology 0303 health sciences biology fungi food and beverages Cuscuta Cuscuta campestris biology.organism_classification Convolvulaceae Cucumis Signal Transduction 010606 plant biology & botany |
| Zdroj: | Plant Physiol |
| ISSN: | 1532-2548 0032-0889 |
| Popis: | Dodder (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 15N 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|