Miura Hinako, Ochi Ryota, Nishiwaki Hisashi, Yamauchi Satoshi, Xie Xiaonan, Nakamura Hidemitsu, Yoneyama Koichi, Yoneyama Kaori
Graduate School of Agriculture, Ehime University, Matsuyama 790-8566, Japan.
Center for Bioscience Research and Education, Utsunomiya University, Utsunomiya 321-8505, Japan.
Plants (Basel). 2022 Feb 24;11(5):606. doi: 10.3390/plants11050606.
The root parasitic weed broomrapes, spp., cause severe damage to agriculture all over the world. They have a special host-dependent lifecycle and their seeds can germinate only when they receive chemical signals released from host roots. Our previous study demonstrated that 2-phenylethyl isothiocyanate is an active germination stimulant for in root exudates of oilseed rape. In the present study, 21 commercially available ITCs were examined for seed germination stimulation, and some important structural features of ITCs for exhibiting seed germination stimulation have been uncovered. Structural optimization of ITC for germination stimulation resulted in ITCs that are highly active to . Interestingly, these ITCs induced germination of but not or . seeds collected from mature plants parasitizing different hosts responded to these ITCs with different levels of sensitivity. ITCs have the potential to be used as inducers of suicidal germination of seeds.
根寄生杂草列当属植物对全球农业造成严重损害。它们具有特殊的依赖宿主的生命周期，其种子只有在接收到宿主根系释放的化学信号时才能萌发。我们之前的研究表明，2-苯乙基异硫氰酸酯是油菜根系分泌物中列当种子萌发的一种活性刺激物。在本研究中，检测了21种市售的异硫氰酸酯对列当种子萌发的刺激作用，并揭示了异硫氰酸酯表现出列当种子萌发刺激作用的一些重要结构特征。对用于萌发刺激的异硫氰酸酯进行结构优化，得到了对列当具有高活性的异硫氰酸酯。有趣的是，这些异硫氰酸酯能诱导列当种子萌发，但不能诱导向日葵列当或埃及列当种子萌发。从寄生不同宿主的成熟植株上收集的列当种子对这些异硫氰酸酯的反应具有不同程度的敏感性。异硫氰酸酯有潜力用作列当种子自杀式萌发的诱导剂。
