Kumar Krishna, Amir Rachel
Migal-Galilee Technology Center, P.O. Box 831, Kiryat Shmona 1101600, Israel.
Tel-Hai College, Kfar Giladi 1220800, Israel.
Plants (Basel). 2021 Oct 3;10(10):2098. doi: 10.3390/plants10102098.
(dodder) is a stem holoparasitic plant without leaves or roots that parasitizes various types of host plants and causes damage to certain crops worldwide. This study aimed at gaining more knowledge about the effect of the hosts on the parasite's levels of primary metabolites. To this end, metabolic profiling analyses were performed on the parasite's three main organs, haustoria, stem and flowers, which developed on three hosts, , and . The results showed significant differences in the metabolic profiles of C. campestris that developed on the different hosts, suggesting that the parasites rely highly on the host's metabolites. However, changes in the metabolites' contents between the organs that developed on the same host suggest that the parasite can also self-regulate its metabolites. Flowers, for example, have significantly higher levels of most of the amino acids and sugar acids, while haustoria and stem have higher levels of several sugars and polyols. Determination of total soluble proteins and phenolic compounds showed that the same pattern is detected in the organs unrelated to the hosts. This study contributes to our knowledge about the metabolic behavior of this parasite.
菟丝子是一种无叶无根的茎寄生植物，寄生于多种寄主植物上，对全球某些作物造成损害。本研究旨在进一步了解寄主对该寄生虫初级代谢产物水平的影响。为此，对寄生在三种寄主（ 、 和 ）上的该寄生虫的三个主要器官——吸器、茎和花进行了代谢谱分析。结果表明，在不同寄主上生长的菟丝子代谢谱存在显著差异，这表明该寄生虫高度依赖寄主的代谢产物。然而，在同一寄主上发育的器官之间代谢产物含量的变化表明，该寄生虫也能自我调节其代谢产物。例如，花中大多数氨基酸和糖酸的含量显著更高，而吸器和茎中几种糖类和多元醇的含量更高。总可溶性蛋白和酚类化合物的测定表明，在与寄主无关的器官中也检测到了相同的模式。本研究有助于我们了解这种寄生虫的代谢行为。
