ArticlePlant physiology2001
The Arabidopsis immutans mutation affects plastid differentiation and the morphogenesis of white and green sectors in variegated plants.
Article in Plant physiology, 2001. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.
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47 citing papers in PubMed, 161 citations in OpenAlex.
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- Mutation mapping of a variegated EMS tomato reveals an FtsH-like protein precursor potentially causing patches of four phenotype classes in the leaves with distinctive internal morphology.BMC plant biology · 2024Article
- Morphological Analyses and QTL Mapping of Mottled Leaf in Zucchini (International journal of molecular sciences · 2024Article
- Proximity to Photosystem II is necessary for activation of Plastid Terminal Oxidase (PTOX) for photoprotection.Nature communications · 2024Article
- Transcriptome Analysis of Air Space-Type Variegation Formation inInternational journal of molecular sciences · 2022Article
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- Eleven biosynthetic genes explain the majority of natural variation in carotenoid levels in maize grain.The Plant cell · 2021Article
- Lycopene β-cyclase expression influences plant physiology, development, and metabolism in tobacco plants.Journal of experimental botany · 2021Article
- Disruption of carotene biosynthesis leads to abnormal plastids and variegated leaves in Brassica napus.Molecular genetics and genomics : MGG · 2020Article
- Contrasting Responses of Plastid Terminal Oxidase Activity Under Salt Stress in Two CFrontiers in plant science · 2020Article
- Differential expression of recently duplicated PTOX genes in Glycine max during plant development and stress conditions.Journal of bioenergetics and biomembranes · 2019Article
- Protective Role of Leaf Variegation inInternational journal of molecular sciences · 2019Article
- Transcriptome Profile of the VariegatedInternational journal of molecular sciences · 2019Article
- Thermal Benefits From White Variegation ofFrontiers in plant science · 2019Article
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- Physiological differences and changes in global DNA methylation levels in Agave angustifolia Haw. albino variant somaclones during the micropropagation process.Plant cell reports · 2016Article
- Chloroplast Translation Initiation Factors Regulate Leaf Variegation and Development.Plant physiology · 2016Article
- Proteomic Analysis Reveals the Leaf Color Regulation Mechanism in Chimera Hosta "Gold Standard" Leaves.International journal of molecular sciences · 2016Article
- Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The immutans (im) variegation mutant of Arabidopsis has green and white leaf sectors due to the action of a nuclear recessive gene, IMMUTANS (IM). This gene encodes the IM protein, which is a chloroplast homolog of the mitochondrial alternative oxidase. Because the white sectors of im accumulate the noncolored carotenoid, phytoene, IM likely serves as a redox component in phytoene desaturation. In this paper, we show that IM has a global impact on plant growth and development and is required for the differentiation of multiple plastid types, including chloroplasts, amyloplasts, and etioplasts. IM promoter activity and IM mRNAs are also expressed ubiquitously in Arabidopsis. IM transcript levels correlate with carotenoid accumulation in some, but not all, tissues. This suggests that IM function is not limited to carotenogenesis. Leaf anatomy is radically altered in the green and white sectors of im: Mesophyll cell sizes are dramatically enlarged in the green sectors and palisade cells fail to expand in the white sectors. The green im sectors also have significantly higher than normal rates of O(2) evolution and elevated chlorophyll a/b ratios, typical of those found in "sun" leaves. We conclude that the changes in structure and photosynthetic function of the green leaf sectors are part of an adaptive mechanism that attempts to compensate for a lack of photosynthesis in the white leaf sectors, while maximizing the ability of the plant to avoid photodamage.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.