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Plant Physiol

Title:		Arabidopsis Responds to Alternaria alternata Volatiles by Triggering Plastid Phosphoglucose Isomerase-Independent Mechanisms
Author(s):		Sanchez-Lopez AM; Bahaji A; De Diego N; Baslam M; Li J; Munoz FJ; Almagro G; Garcia-Gomez P; Ameztoy K; Ricarte-Bermejo A; Novak O; Humplik JF; Spichal L; Dolezal K; Ciordia S; Mena MC; Navajas R; Baroja-Fernandez E; Pozueta-Romero J;
Address:		"Instituto de Agrobiotecnologia, Consejo Superior de Investigaciones Cientificas/UPNA/Gobierno de Navarra, 31192 Mutiloabeti, Nafarroa, Spain (A.M.S.-L., A.B., M.B., J.L., F.J.M., G.A., P.G.-G., K.A., A.R.-B., E.B.-F., J.P.-R.). Department of Chemical Biology and Genetics, Centre of the Region Hana for Biotechnological and Agricultural Research, Faculty of Science, Palacky University, Olomouc CZ-78371, Czech Republic (N.D.D., J.F.H., L.S., K.D.). Laboratory of Growth Regulators, Centre of the Region Hana for Biotechnological and Agricultural Research, Faculty of Science, Palacky University, and Institute of Experimental Botany AS CR, Olomouc CZ-78371, Czech Republic (O.N., K.D.); and. Unidad de Proteomica Centro Nacional de Biotecnologia, Consejo Superior de Investigaciones Cientificas, Campus de Cantoblanco, Madrid 28049, Spain (S.C., M.C.M., R.N.). Instituto de Agrobiotecnologia, Consejo Superior de Investigaciones Cientificas/UPNA/Gobierno de Navarra, 31192 Mutiloabeti, Nafarroa, Spain (A.M.S.-L., A.B., M.B., J.L., F.J.M., G.A., P.G.-G., K.A., A.R.-B., E.B.-F., J.P.-R.); javier.pozueta@unavarra.es. Department of Chemical Biology and Genetics, Centre of the Region Hana for Biotechnological and Agricultural Research, Faculty of Science, Palacky University, Olomouc CZ-78371, Czech Republic (N.D.D., J.F.H., L.S., K.D.); javier.pozueta@unavarra.es. Laboratory of Growth Regulators, Centre of the Region Hana for Biotechnological and Agricultural Research, Faculty of Science, Palacky University, and Institute of Experimental Botany AS CR, Olomouc CZ-78371, Czech Republic (O.N., K.D.); and javier.pozueta@unavarra.es. Unidad de Proteomica Centro Nacional de Biotecnologia, Consejo Superior de Investigaciones Cientificas, Campus de Cantoblanco, Madrid 28049, Spain (S.C., M.C.M., R.N.) javier.pozueta@unavarra.es"
Journal Title:		Plant Physiol
Year:		2016
Volume:		20160923
Issue:		3
Page Number:		1989 - 2001
DOI:		10.1104/pp.16.00945
ISSN/ISBN:		1532-2548 (Electronic) 0032-0889 (Print) 0032-0889 (Linking)
Abstract:		"Volatile compounds (VCs) emitted by phylogenetically diverse microorganisms (including plant pathogens and microbes that do not normally interact mutualistically with plants) promote photosynthesis, growth, and the accumulation of high levels of starch in leaves through cytokinin (CK)-regulated processes. In Arabidopsis (Arabidopsis thaliana) plants not exposed to VCs, plastidic phosphoglucose isomerase (pPGI) acts as an important determinant of photosynthesis and growth, likely as a consequence of its involvement in the synthesis of plastidic CKs in roots. Moreover, this enzyme plays an important role in connecting the Calvin-Benson cycle with the starch biosynthetic pathway in leaves. To elucidate the mechanisms involved in the responses of plants to microbial VCs and to investigate the extent of pPGI involvement, we characterized pPGI-null pgi1-2 Arabidopsis plants cultured in the presence or absence of VCs emitted by Alternaria alternata We found that volatile emissions from this fungal phytopathogen promote growth, photosynthesis, and the accumulation of plastidic CKs in pgi1-2 leaves. Notably, the mesophyll cells of pgi1-2 leaves accumulated exceptionally high levels of starch following VC exposure. Proteomic analyses revealed that VCs promote global changes in the expression of proteins involved in photosynthesis, starch metabolism, and growth that can account for the observed responses in pgi1-2 plants. The overall data show that Arabidopsis plants can respond to VCs emitted by phytopathogenic microorganisms by triggering pPGI-independent mechanisms"
Keywords:		Alternaria/*chemistry/radiation effects Arabidopsis/*enzymology/growth & development/*microbiology/physiology Arabidopsis Proteins/*metabolism Cell Wall/metabolism/radiation effects Cytokinins/metabolism Glucose-6-Phosphate Isomerase/*metabolism Light Mes;
Notes:		"MedlineSanchez-Lopez, Angela Maria Bahaji, Abdellatif De Diego, Nuria Baslam, Marouane Li, Jun Munoz, Francisco Jose Almagro, Goizeder Garcia-Gomez, Pablo Ameztoy, Kinia Ricarte-Bermejo, Adriana Novak, Ondrej Humplik, Jan F Spichal, Lukas Dolezal, Karel Ciordia, Sergio Mena, Maria Carmen Navajas, Rosana Baroja-Fernandez, Edurne Pozueta-Romero, Javier eng Research Support, Non-U.S. Gov't 2016/09/25 Plant Physiol. 2016 Nov; 172(3):1989-2001. doi: 10.1104/pp.16.00945. Epub 2016 Sep 23"