ArticlePlant physiology2006
Pea seed mitochondria are endowed with a remarkable tolerance to extreme physiological temperatures.
Article in Plant physiology, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed.
- OXPHOS Organization and Activity in Mitochondria of Plants with Different Life Strategies.International journal of molecular sciences · 2023Article
- Mitochondrial activity and biogenesis during resurrection of Haberlea rhodopensis.The New phytologist · 2022Article
- Effects of Melatonin on Morphological Characteristics, Mineral Nutrition, Nitrogen Metabolism, and Energy Status in Alfalfa Under High-Nitrate Stress.Frontiers in plant science · 2021Article
- Comparison of Thermal and Hydrotime Requirements for Seed Germination of SevenFrontiers in plant science · 2020Article
- The Mitochondrial Small Heat Shock Protein HSP22 from Pea is a Thermosoluble Chaperone Prone to Co-Precipitate with Unfolding Client Proteins.International journal of molecular sciences · 2019Article
- Mitochondrial small heat shock protein mediates seed germination via thermal sensing.Proceedings of the National Academy of Sciences of the United States of America · 2019Article
- Characterization and Functional Analysis ofInternational journal of molecular sciences · 2018Article
- Water content, adenylate kinase, and mitochondria drive adenylate balance in dehydrating and imbibing seeds.Journal of experimental botany · 2017Article
- Alleviatory effects of silicon on the foliar micromorphology and anatomy of rice (Oryza sativa L.) seedlings under simulated acid rain.PloS one · 2017Article
- Unraveling the early molecular and physiological mechanisms involved in response to phenanthrene exposure.BMC genomics · 2016Article
- Roles of mitochondrial energy dissipation systems in plant development and acclimation to stress.Annals of botany · 2015Review
- The fluxes of H2O2 and O2 can be used to evaluate seed germination and vigor of Caragana korshinskii.Planta · 2014Article
- Overexpression of a heat shock protein (ThHSP18.3) from Tamarix hispida confers stress tolerance to yeast.Molecular biology reports · 2012Article
- Diverse accumulation of several dehydrin-like proteins in cauliflower (Brassica oleracea var. botrytis), Arabidopsis thaliana and yellow lupin (Lupinus luteus) mitochondria under cold and heat stress.BMC plant biology · 2010Article
- NAD pattern and NADH oxidase activity in pea (Pisum sativum L.) under cadmium toxicity.Physiology and molecular biology of plants : an international journal of functional plant biology · 2010Article
- Gene expression changes in response to drought stress in Citrullus colocynthis.Plant cell reports · 2009Article
- The crucial role of plant mitochondria in orchestrating drought tolerance.Annals of botany · 2009Review
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Authors and funding
7 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Most seeds are anhydrobiotes, relying on an array of protective and repair mechanisms, and seed mitochondria have previously been shown to harbor stress proteins probably involved in desiccation tolerance. Since temperature stress is a major issue for germinating seeds, the temperature response of pea (Pisum sativum) seed mitochondria was examined in comparison with that of mitochondria from etiolated epicotyl, a desiccation-sensitive tissue. The functional analysis illustrated the remarkable temperature tolerance of seed mitochondria in response to both cold and heat stress. The mitochondria maintained a well-coupled respiration between -3.5 degrees C and 40 degrees C, while epicotyl mitochondria were not efficient below 0 degrees C and collapsed above 30 degrees C. Both mitochondria exhibited a similar Arrhenius break temperature at 7 degrees C, although they differed in phospholipid composition. Seed mitochondria had a lower phosphatidylethanolamine-to-phosphatidylcholine ratio, fewer unsaturated fatty acids, and appeared less susceptible to lipid peroxidation. They also accumulated large amounts of heat shock protein HSP22 and late-embryogenesis abundant protein PsLEAm. The combination of membrane composition and stress protein accumulation required for desiccation tolerance is expected to lead to an unusually wide temperature tolerance, contributing to the fitness of germinating seeds in adverse conditions. The unique oxidation of external NADH at low temperatures found with several types of mitochondria may play a central role in maintaining energy homeostasis during cold shock, a situation often encountered by sessile and ectothermic higher plants.
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