Recognition system in pollen-pistil interaction in Brassicaseae

2017 Fiscal Year Final Research Report

• Project/Area Number: 26440145
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Plant molecular biology/Plant physiology
• Research Institution: Osaka University
• Principal Investigator: Iwano Megumi 大阪大学, 産業科学研究所, 特任助教(常勤) (50160130)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: アブラナ科植物 / 和合受粉 / 液胞 / 小胞体 / トランスゴルジネットワーク / カルシウム輸送体

Outline of Final Research Achievements

In the Brassicaceae, intraspecific non-self pollen (compatible pollen) can germinate and grow into the stigmatic papilla cells, while self pollen or interspecific pollen are rejected at this stage. However, the mechanisms underlying this selective acceptance of compatible pollen remain unknown. Here, analysis of live-cell imaging and three dimensional tomography using Scanning Transmission Electron Microscope (STEM) visualized the interaction between cell membrane and interacellular memberane during compatible pollination, and biochemical analysis clarified the molecules interacting with Ca2+ transporter in the papilla cell membrane.

Free Research Field

植物生理学