期刊
CURRENT OPINION IN PLANT BIOLOGY
卷 27, 期 -, 页码 104-110出版社
CURRENT BIOLOGY LTD
DOI: 10.1016/j.pbi.2015.06.017
关键词
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资金
- Japan Society for the Promotion of Science KAKENHI [20001009, 23770060, 25221103, 24658002]
- RIKEN
- Japan Science and Technology Agency, PRESTO
- Futaba Electronics Memorial Foundation
- Grants-in-Aid for Scientific Research [23770060, 24658002] Funding Source: KAKEN
Cytoplasmic streaming occurs widely in plants ranging from algae to angiosperms. However, the molecular mechanism and physiological role of cytoplasmic streaming have long remained unelucidated. Recent molecular genetic approaches have identified specific myosin members (XI-2 and XI-K as major and XI-1, XI-B, and XI-I as minor motive forces) for the generation of cytoplasmic streaming among 13 myosin XIs in Arabidopsis thaliana. Simultaneous knockout of these myosin XI members led to a reduced velocity of cytoplasmic streaming and marked defects of plant development. Furthermore, the artificial modifications of myosin XI-2 velocity changed plant and cell sizes along with the velocity of cytoplasmic streaming. Therefore, we assume that cytoplasmic streaming is one of the key regulators in determining plant size.
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