Large-scale interplant exchange of macromolecules between soybean and dodder under nutrient stresses

作者：Jingxiong Zhang, Shalan Li, W. Li, Zerui Feng, Shuhan Zhang, Xijie Zheng, Yuxing Xu, Guojing Shen, Man Zhao, Guoyan Cao, Xuna Wu, Jianqiang Wu · 发表于：Acta Botanica Yunnanica · 年份：2023 · DOI：10.1016/j.pld.2023.11.005 · 被引用次数：14 · 研究领域：Plant Parasitism and Resistance、Legume Nitrogen Fixing Symbiosis、Agronomic Practices and Intercropping Systems

Parasitic plants and their hosts communicate through haustorial connections. Nutrient deficiency is a common stress for plants, yet little is known about whether and how host plants and parasites communicate during adaptation to such nutrient stresses. In this study, we used transcriptomics and proteomics to analyze how soybean (Glycine max) and its parasitizing dodder (Cuscuta australis) respond to nitrate and phosphate deficiency (-N and -P). After -N and -P treatment, the soybean and dodder plants exhibited substantial changes of transcriptome and proteome, although soybean plants showed very few transcriptional responses to -P and dodder did not show any transcriptional changes to either -N or -P. Importantly, large-scale interplant transport of mRNAs and proteins was detected. Although the mobile mRNAs only comprised at most 0.2% of the transcriptomes, the foreign mobile proteins could reach 6.8% of the total proteins, suggesting that proteins may be the major forms of interplant communications. Furthermore, the interplant mobility of macromolecules was specifically affected by the nutrient regimes and the transport of these macromolecules was very likely independently regulated. This study provides new insight into the communication between host plants and parasites under stress conditions.