2014 Fiscal Year Annual Research Report
| Project/Area Number |
12F02781
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| Research Institution | The Institute of Physical and Chemical Research |
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Principal Investigator |
白須 賢 独立行政法人理化学研究所, 環境資源科学研究センター, グループディレクター
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| Co-Investigator(Kenkyū-buntansha) |
SPALLEK Thomas 独立行政法人理化学研究所, 環境資源科学研究センター, 外国人特別研究員
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| Keywords | Parastic Plants |
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| Outline of Annual Research Achievements |
I developed two projects to elucidate molecular interaction between host plants and parasitic plants. I focus thereby of three different parasitic plants, Striga asiatica, Striga hermonthica and Phtheirospermum japonicum.
1) I characterized of a novel protein family of secreted proteins, which are conserved in at least three parasitic plants species and carry a Plant invertase/pectin methylesterase inhibitor domain. My new results show that members of this protein family specifically localized to haustoria at late stages of infection and that expression of these genes in non-parasitic plants caused to severe developmental phenotypes. These phenotypes maybe associated with altered cell wall composition or nutrient acquisition.
2) I studied host hormone responses during plant parasitism and discovered an involvement of host auxin signalling components in infection and haustoria development. I established a method to evaluate Arabidopsis infection by S. asiatica, S. hermonthica and P. japonicum and screened a collection of known Arabidopsis auxin signalling mutants for resistance against these parasitic plants. I discovered that mutants along the Solitary Root (SLR) pathway exhibited elevated levels of resistance. This work showed that parasitic plants couple infection processes to host components such as auxin signalling.
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| Current Status of Research Progress |
Current Status of Research Progress
3: Progress in research has been slightly delayed.
Reason
本研究課題は平成26年度が最終年度のため、記入しない。
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| Strategy for Future Research Activity |
本研究課題は平成26年度が最終年度のため、記入しない。
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Research Products
(3 results)
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[Presentation] GENOME AND TRANSCRIPTOME ANALYSES OF STRIGA SPP.2014
Author(s)
Satoko Yoshida, ri-ichiroh Manabe, Seunglill Kim, Thomas Spallek, Musembi Mutuku, Michael Timko, Doil Choi, Ken Shirasu
Organizer
XVI International Congress on Molecular Plant-Microbe Interactions
Place of Presentation
Rhodes, Greece
Year and Date
2014-07-06 – 2014-07-10
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