TITLE

Respiratory supercomplexes of plant mitochondria: Structure and possible functions

AUTHOR(S)
Rakhmankulova, Z.
PUB. DATE
November 2014
SOURCE
Russian Journal of Plant Physiology;Nov2014, Vol. 61 Issue 6, p721
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Over the last few years a vast amount of information has accumulated on the structural organization of mitochondrial electron-transport chain. The respiratory complexes were shown to be organized into sophisticated dynamic structures, so-called supercomplexes and megacomplexes that ensure sustained and effective operation of the respiratory electron-transport chain. This review considers structural and functional features of plant supercomplexes, as well as their possible role in energy-related adaptation of plants to stresses. It is proposed that supercomplexes provide the first-line defense mechanism that protects the electron-transport chain against reactive oxygen species in stressed plants. Subsequent protective responses involve the alternative respiratory pathways, uncoupling mechanisms, and other antioxidant systems.
ACCESSION #
98837414

 

Related Articles

  • Metal-Induced Oxidative Stress and Plant Mitochondria. Keunen, Els; Remans, Tony; Bohler, Sacha; Vangronsveld, Jaco; Cuypers, Ann // International Journal of Molecular Sciences;Oct2011, Vol. 12 Issue 10, p6894 

    A general status of oxidative stress in plants caused by exposure to elevated metal concentrations in the environment coincides with a constraint on mitochondrial electron transport, which enhances ROS accumulation at the mitochondrial level. As mitochondria are suggested to be involved in redox...

  • On the role of plant mitochondrial metabolism and its impact on photosynthesis in both optimal and sub-optimal growth conditions. Araújo, Wagner; Nunes-Nesi, Adriano; Fernie, Alisdair // Photosynthesis Research;Feb2014, Vol. 119 Issue 1/2, p141 

    Given that the pathways of photosynthesis and respiration catalyze partially opposing processes, it follows that their relative activities must be carefully regulated within plant cells. Recent evidence has shown that the components of the mitochondrial electron transport chain are essential for...

  • Plant Mitochondria. Fifty Years of Plant Biology. Pennazio, Sergio // Biology Forum / Rivista di Biologia;2007, Vol. 100 Issue 2, p305 

    This history has its conventional opening about twenty years after the statement of the "Cell Theory", when, at the end of the 19th century, several cytologists discovered unusual, minute corpuscles in the protoplasm of both animal and plant cells. These organelles, owing to their polymorphism,...

  • Photosynthetic Electron Transport Differentially Regulates the Expression of Superoxide Dismutase Genes in Liverwort, Marchantia paleacea var. diptera. Sakaguchi, Shiho; Fukuda, Takeshi; Takano, Hiroyoshi; Ono, Kanji; Takio, Susumu // Plant & Cell Physiology;Mar2004, Vol. 45 Issue 3, p318 

    Liverwort, Marchantia paleacea var. diptera, contains Mn-superoxide dismutase (Mn-SOD) in mitochondria, Fe-SOD in chloroplast and CuZn-SOD in cytosol. An Mn-SOD gene (MpMnSOD) was isolated from the liverwort. Using this clone together with the liverwort Fe-SOD and CuZn-SOD genes as probes, the...

  • Accumulation of dehydrin-like proteins in the mitochondria of cereals in response to cold, freezing, drought and ABA treatment. Borovskii, Genadii B.; Stupnikova, Irina V.; Antipina, Anna I.; Vladimirova, Svetlana V.; Voinikov, Victor K. // BMC Plant Biology;2002, Vol. 2, p5 

    Background: Dehydrins are known as Group II late embryogenesis abundant proteins. Their high hydrophilicity and thermostability suggest that they may be structure stabilizers with detergent and chaperone-like properties. They are localised in the nucleus, cytoplasm, and plasma membrane. We have...

  • The production of an inducible antisense alternative oxidase (Aox1a) plant. Potter, Felicity Johnson; Wiskich, Joseph T.; Dry, Ian B. // Planta;Jan2001, Vol. 212 Issue 2, p215 

    Plant mitochondria contain an alternative oxidase (AOX) acting as a terminal electron acceptor of the alternative pathway in the electron transport chain. Here we describe the production of inducible antisense Aox1a plants of Arabidopsis thaliana (L.) Heynh. and the procedures used to determine...

  • Energy exchange and ultrastructure of plant cells under generation of nitric oxide. Rakhmatullina, D.; Gordon, L.; Ponomareva, A.; Ogorodnikova, T.; Alyab'ev, A.; Iyudin, V.; Obynochnyi, A. // Russian Journal of Plant Physiology;Jan2011, Vol. 58 Issue 1, p100 

    The effects of nitric oxide (NO) on oxygen consumption, heat generation, and cell ultrastructure were investigated in the seedlings of wheat ( Triticum aestivum L.). The experiments were conducted with the excised roots of 5-day-old seedlings grown in the solution of CaCl (2.5 × 10 M). The...

  • Respiration metabolism in mitochondria of pea seedlings of different age under water deficit and rewatering. Generozova, I.; Shugaev, A. // Russian Journal of Plant Physiology;Mar2012, Vol. 59 Issue 2, p235 

    The effects of an osmoticum (mannitol) on growth, water content, respiration, and proline content in epicotyls of etiolated two-day-old (S) and three-day-old (S) pea ( Pisum sativum L., cv. Flora-2) seedlings were studied. Water deficit was produced by placing plant roots in 0.6 M mannitol for...

  • Changes in mitochondrial shape in wheat root cells exposed to mitochondrial poisons. Ponomareva, A.; Polygalova, O. // Russian Journal of Plant Physiology;May2012, Vol. 59 Issue 3, p428 

    It is found that mitochondrial poisons not only modify the functional activity of the organelles but also change the shape of some mitochondria. The ring-shaped organelles were found to appear in root cells of 5- to 6-day-old seedlings of spring wheat ( Triticum aestivum L., cvs. Moskovskaya 35...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics