Morphological and plant hormonal changes during parasitization by Cuscuta japonica on Momordica charantia

Journal of plant interactions

article

Takeshi Furuhashi¹  Mikiko Kojima²  Hitoshi Sakakibara²  Atsushi Fukushima³  Masami Yokota Hirai¹  Katsuhisa Furuhashi⁴ 

[1] Metabolic Systems Research Team, RIKEN Center for Sustainable Resource Science;Plant Productivity Systems Research Group, RIKEN Center for Sustainable Resource Science;Metabolome Informatics Research Team, RIKEN Center for Sustainable Resource Science;Department of Parasitic Plant Physiology, Maeda-Institute of Plant Resources

关键词: Cuscuta;    plant interaction;    hypertrophy;    cytokinin;    stem parasitic plant;    vascular tissue;    Momordica;   

DOI  :  10.1080/17429145.2013.816790

学科分类：纳米科学和纳米技术

来源: Taylor & Francis

【 摘 要 】

The holostemparasitic plant Cuscuta parasitizes various plants and sucks nutrients from the host stem. We used Cuscuta japonica as the parasite and Momordica charantia as the host plant, and described their interaction. The parasitized Momordica stems started swelling as a hypertrophic response within 3 days after parasitization. Concurrently, the Cuscuta stem grew rapidly and developed bigger scale leaves than usual. Parasitized Momordica stems reduced photosynthetic activity. Histological observation revealed no programmed cell death but an increased number of vascular bundles in the Momordica stem, especially near the Cuscuta hyphae. The defensive response of Momordica mainly involved the SA pathway. Drastic increase of tZ- and DZ-type cytokinins in Momordica stems would play an important role for hypertrophy. Cuscuta had higher cZ endogenously and our results imply that each subtype of CK might play different roles during parasitization process. Comprehensive plant hormone analysis provides new insights into plant interaction studies.

【 授权许可】

CC BY|CC BY-NC