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Detection and Adaptation in Parasitic Angiosperm Host Selection
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作者 Lizhi Liang Yue Liu +2 位作者 Jenil Jariwala David G. Lynn Andrew G. Palmer 《American Journal of Plant Sciences》 2016年第8期1275-1290,共17页
Developmental transitions in some parasitic angiosperms are tied directly to host-derived chemical cues (xenognosins). The obligate hemi-parasite Striga asiatica, initiates the root apical meristem population (germina... Developmental transitions in some parasitic angiosperms are tied directly to host-derived chemical cues (xenognosins). The obligate hemi-parasite Striga asiatica, initiates the root apical meristem population (germination), development of the host attachment organ (the haustorium), and shoot apical meristem initiation (seed coat shedding) in response to specific xengonosins. These checkpoints synchronize spatial and temporal tissue development. We have now exploited the external control over these developmental transitions to trace functional expression in haustorial organogenesis. Genes associated with phytohormone regulation, metabolism, vascular tissue development, and reactive oxygen species (ROS) production identified in this study suggest an elaborate and global response closely tied to plant defense and redox chemistry that may also be components of a more general quorum sensing-type mechanism in plants. 展开更多
关键词 Parasitic Plants semagenesis Parasitic Evolution Xenognosis Host Detection Quorum Sensing
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