ArticlePlant physiology2010
Photosynthetic performance and fertility are repressed in GmAOX2b antisense soybean.
Article in Plant physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 30 citations in OpenAlex.
- Essential mitochondrial activity in Physcomitrium patens relies on complementary cytochrome and alternative oxidase pathways.The Plant journal : for cell and molecular biology · 2026Article
- Mitochondrial AOX1a and an HPlant biotechnology journal · 2025Article
- Roles of mitochondrial alternative oxidase in photosynthetic electron transport in illuminated leaves ofJournal of biosciences · 2024Article
- Coordinated regulation of the mitochondrial retrograde response by circadian clock regulators and ANAC017.Plant communications · 2023Article
- Mitochondrial activity and biogenesis during resurrection of Haberlea rhodopensis.The New phytologist · 2022Article
- Roles for Plant Mitochondrial Alternative Oxidase Under Normoxia, Hypoxia, and Reoxygenation Conditions.Frontiers in plant science · 2020Article
- Alternative Oxidase Isoforms Are Differentially Activated by Tricarboxylic Acid Cycle Intermediates.Plant physiology · 2018Article
- Genome-wide identification and analysis of the ALTERNATIVE OXIDASE gene family in diploid and hexaploid wheat.PloS one · 2018Article
- Coordinated regulation of photosynthetic and respiratory components is necessary to maintain chloroplast energy balance in varied growth conditions.Journal of experimental botany · 2017Article
- On the role of plant mitochondrial metabolism and its impact on photosynthesis in both optimal and sub-optimal growth conditions.Photosynthesis research · 2014Review
- Pollen tube growth: where does the energy come from?Plant signaling & behavior · 2014Review
- Alternative oxidase: a mitochondrial respiratory pathway to maintain metabolic and signaling homeostasis during abiotic and biotic stress in plants.International journal of molecular sciences · 2013Review
- Article
Corrections and comments
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The alternative oxidase (AOX) is a cyanide-resistant oxidase that provides an alternative outlet for electrons from the respiratory electron transport chain embedded in the inner membrane of plant mitochondria. Examination of soybean (Glycine max) plants carrying a GmAOX2b antisense gene showed AOX to have a central role in reproductive development and fecundity. In three independently transformed antisense lines, seed set was reduced by 16% to 43%, whereas ovule abortion increased by 1.2- to 1.7-fold when compared with nontransgenic transformation control plants. Reduced fecundity was associated with reductions in whole leaf cyanide-resistant, salicylhydroxamic acid-sensitive respiration and net photosynthesis, but there was no change in total respiration in the dark. The frequency of potential fertilization events was reduced by at least one-third in the antisense plants as a likely consequence of prefertilization defects. Pistils of the antisense plants contained a higher proportion of immature-sized, nonfertile embryo sacs compared with nontransgenic control plants. Increased rates of pollen abortion in vivo and reduced rates of pollen germination in vitro suggested that the antisense gene compromised pollen development and function. Reciprocal crosses between antisense and nontransgenic plants revealed that pollen produced by antisense plants was less active in fertilization. Taken together, the results presented here indicate that AOX expression has an important role in determining normal gametophyte development and function.
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