Lupine embryo axes under salinity stress. II. Mitochondrial proteome response

• Autorzy: Wojtyla L. , Kosmala A. , Garnczarska M.
• Języki publikacji: EN

Abstrakty

EN

Germination is the first step of plant growth in plant life cycle. An embryonic radicle protruding the seed coat is the first part of plant which has direct contact with external environment including salt-affected soil. In embryo axes, mitochondria are the main energy producer. To understand better salinity impact on mitochondria functioning, this study was focused on the effect of NaCl stress onto mitochondria proteome. Mitochondria were isolated from yellow lupine (Lupine luteus L. ‘Mister’) embryo axes cultured in vitro for 12 h with 250 and 500 mM NaCl. Two-dimensional gel electrophoresis of mitochondrial proteins isolated from NaCl-treated axes demonstrated significant changes in proteins abundances as a response to salinity treatment. Twenty-one spots showing significant changes in protein expression profiles both under 250 and 500 mM NaCl treatment were selected for tandem mass spectrometry identification. This approach revealed proteins associated with different metabolic processes that represent enzymes of tricarboxylic acid cycle, mitochondrial electron transport chain, enzymes and proteins involved in mitochondria biogenesis and stresses response. Among proteins involved in mitochondria biogenesis, mitochondrial import inner membrane translocase, subunit Tim17/22, mitochondrial-processing peptidase subunit alpha-1, mitochondrial elongation factor Tu and chaperonins CPN60 were revealed. Finally, formate dehydrogenase 1 was found to accumulate in lupine embryo axes mitochondria under salinity. The functions of identified proteins are discussed in relation to salinity stress response, including salinity-induced PCD.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2013
• Tom: 35
• Numer: 08
• Opis fizyczny: p.2383-2392,fig.,ref.

Twórcy

autor

Wojtyla L.

• Department of Plant Physiology, Faculty of Biology, Adam Mickiewicz University, ul. Umultowska 89, 61-614 Poznan´, Poland

autor

Kosmala A.

• Laboratory of Cytogenetics, Institute of Plant Genetics, Polish Academy of Sciences, ul. Strzeszyn´ska 34, 60-479 Poznan´, Poland

autor

Garnczarska M.

• Department of Plant Physiology, Faculty of Biology, Adam Mickiewicz University, ul. Umultowska 89, 61-614 Poznan´, Poland

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