Metabolite changes with induction of Cuscuta haustorium and translocation from host plants

Journal of plant interactions

article

Takeshi Furuhashi¹  Lena Fragner¹  Katsuhisa Furuhashi²  Luis Valledor¹  Xiaoliang Sun¹  Wolfram Weckwerth¹ 

[1] Department of Molecular System Biology, University of Vienna;Department of Parasitic Plant Physiology, Maeda-Institute of Plant Resources

关键词: holoparasitic plant;    Cuscuta;    thigmomorphogenesis;    plant interaction;   

DOI  :  10.1080/17429145.2011.603059

学科分类：纳米科学和纳米技术

来源: Taylor & Francis

【 摘 要 】

Cuscuta is a stem holoparasitic plant without leaves or roots, parasitizing various types of host plants and causing major problems for certain crops. Cuscuta is known as a generalist and, thus, must have unique parasite strategies to cope with different host plants. For elucidating metabolic responses and mechanisms of parasitization, metabolomic approaches using GC/MS were applied. We compared five stages of Cuscuta japonica: early stage seedlings, with far red light (FR) cue, with contact signal, haustorium induced seedlings by both signals and adult plant parasites on host plants. Sugars, amino acids, organic acids, nucleic acids, and polyols were identified from the polar phase fraction. The apical part contained metabolite profiles different from the haustorium induced part or the basal part. Amino acid and some organic acids were up-regulated for haustorium induction but decreased after parasitization. After attachment to different host plants, metabolite profiles of Cuscuta japonica changed dramatically due to the absorption of specific host plant metabolites such as pinitol. Cuscuta seedlings attached to pinitol rich host plants contained more pinitol and showed different profiles from those attached to plants having less or lacking pinitol.

【 授权许可】

CC BY|CC BY-NC