Hiroaki Fujii profile picture
Hiroaki
Fujii
Adjunct Professor, Molecular Plant Biology
Senior Research Fellow, Molecular Plant Biology
Ph.D

Contact

+358 29 450 4208
+358 50 574 3891
Tykistökatu 6
20520
Turku

Areas of expertise

Molecular Plant Biology
Abiotic stress signalling;

Biography

2003 PhD, Kyoto University, Japan

2003-2011 Postdoc, University of Arizona, USA

                                 University of California, Riverside, USA

                                 KAUST, Saudi Arabia

2012-present Junior Group Leader, University of Turku



Teaching

KABI 5061 Literature in Plant Biology

KABI4006 Plant acclimation and Development (together with other lecturers)

Research

Analysis of osmotic stress signaling in plants

Salinity, drought, and low temperature cause osmotic stress in plants and activate signalling pathways that regulate plant responses. The understanding of plant signalling pathways that respond to osmotic stress remains limited in spite of its importance for both basic biology and agriculture. Our previous study revealed that the SNF1-related protein kinase 2 family (SnRK2s) plays a central role in osmotic stress responses. In our project with model plant Arabidopsis thaliana, we will use genetics, and biochemical techniques to examine molecular interactions between SnRK2s and other signaling components in order to clarify the nature of osmotic stress pathways.   

Several literatures and our preliminary results suggest that osmotic stress induces posttranslational modification of SnRK2s. We will further characterize this modification to determine the activation mechanism of SnRK2s in the osmotic stress pathway. We will also determine the function of proteins that regulate SnRK2s in the osmotic stress pathway; these proteins have been identified in yeast two-hybrid screening. Because some key players in osmotic stress signaling have yet to be identified, other screenings will also be performed.

Through these projects, we expect to generate new knowledge regarding the regulatory mechanism of SnRK2s and proteins downstream of SnRK2s, which play central roles in osmotic stress signaling.


Publications

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Genome sequencing and population genomic analyses provide insights into the adaptive landscape of silver birch. (2017)

Nature Genetics
Salojärvi J, Smolander O-P, Nieminen K, Rajaraman S, Safronov O, Safdari P, Lamminmäki A, Immanen J, Lan T, Tanskanen J, Rastas P, Amiryousefi A, Jayaprakash B, Kammonen JI, Hagqvist R, Eswaran G, Ahonen VH, Serra JA, Asiegbu FO, de Dios Barajas-Lopez J, Blande D, Blokhina O, Blomster T, Broholm S, Brosché M, Cui F, Dardick C, Ehonen SE, Elomaa P, Escamez S, Fagerstedt KV, Fujii H, Gauthier A, Gollan PJ, Halimaa P, Heino PI, Himanen K, Hollender C, Kangasjärvi S, Kauppinen L, Kelleher CT, Kontunen-Soppela S, Koskinen JP, Kovalchuk A, Kärenlampi SO, Kärkönen AK, Lim K-J, Leppälä J, Macpherson L, Mikola J, Mouhu K, Mähönen AP, Niinemets Ü, Oksanen E, Overmyer K, Palva ET, Pazouki L, Pennanen V, Puhakainen T, Poczai P, Possen BJHM, Punkkinen M, Rahikainen MM, Rousi M, Ruonala R, van der Schoot C, Shapiguzov A, Sierla M, Sipilä TP, Sutela S, Teeri TH, Tervahauta AI, Vaattovaara A, Vahala J, Vetchinnikova L, Welling A, Wrzaczek M, Xu E, Paulin LG, Schulman AH, Lascoux M, Albert VA, Auvinen P, Helariutta Y, Kangasjärvi J
(A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä)

Pre-mRNA splicing repression triggers abiotic stress signaling in plants (2017)

Plant Journal
Yu Ling, Sahar Alshareef, Haroon Butt, Jorge Lozano-Juste, Lixin Li, Aya A. Galal, Ahmed Moustafa, Afaque Ahmad Momin, Manal Tashkandi, Dale N. Richardson, Hiroaki Fujii, Stefan Arold, Pedro L. Rodriguez, Paula Duque, Magdy M. Mahfouz
(A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä)