ArticlePlant molecular biology2008
Snowy cotyledon 2: the identification of a zinc finger domain protein essential for chloroplast development in cotyledons but not in true leaves.
Article in Plant molecular biology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.
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46 citing papers in PubMed, 68 citations in OpenAlex.
- Transcriptome Analysis Elucidates the Essential Pathways and Candidate Genes Involved in Chloroplast Development Between True Leaves and Cotyledon in Trichosanthes kirilowii Maxim.Biochemical genetics · 2026Article
- 2-Cys peroxiredoxins and the chaperone cpHSP70 act in concert in chloroplast biogenesis in Arabidopsis seedlings.The Plant cell · 2026Article
- Boosting β-carotene in rice and wheat grains through seed-specific expression of a modified wheat or gene.Transgenic research · 2026Article
- The variegatedComputational and structural biotechnology journal · 2024Article
- A genetic screen for dominant chloroplast reactive oxygen species signaling mutants reveals life stage-specific singlet oxygen signaling networks.Frontiers in plant science · 2023Article
- Orange protein, phytoene synthase regulator, has protein disulfide reductase activity.Plant signaling & behavior · 2022Article
- Fine Mapping and Candidate Gene Analysis ofFrontiers in plant science · 2022Article
- Genes for Yield Stability in Tomatoes.Advanced genetics (Hoboken, N.J.) · 2021Article
- Cytological and Transcriptomic Analysis Provide Insights into the Formation of Variegated Leaves inPlants (Basel, Switzerland) · 2021Article
- A PPR Protein ACM1 Is Involved in Chloroplast Gene Expression and Early Plastid Development inInternational journal of molecular sciences · 2021Article
- Disruption of a Rice Chloroplast-Targeted Gene OsHMBPP Causes a Seedling-Lethal Albino Phenotype.Rice (New York, N.Y.) · 2020Article
- Article
- Overexpression of BUNDLE SHEATH DEFECTIVE 2 improves the efficiency of photosynthesis and growth in Arabidopsis.The Plant journal : for cell and molecular biology · 2020Article
- Photosynthetic characterization of transgenicPlant signaling & behavior · 2020Article
- Extrachloroplastic PP7L Functions in Chloroplast Development and Abiotic Stress Tolerance.Plant physiology · 2019Article
- Reduced expression of the proteolytically inactive FtsH members has impacts on the Darwinian fitness of Arabidopsis thaliana.Journal of experimental botany · 2019Article
- Article
- pCYOs: Binary vectors for simple visible selection of transformants using an albino-cotyledon mutant inPlant biotechnology (Tokyo, Japan) · 2019Article
- Introducing anFrontiers in plant science · 2019Article
- Chloroplast vesicle transport.Photosynthesis research · 2018Review
Corrections and comments
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In cotyledons of etiolated seedlings light-dependent transformation of etioplasts to chloroplasts marks the transition from heterotrophic to autotrophic growth. Genetic factors required for this developmental step were identified by isolating mutants of Arabidopsis thaliana that were impaired in chloroplast development in cotyledons but not in true leaves. Several mutants with chlorophyll-deficient cotyledons were isolated and dubbed snowy cotyledon (sco). Here we describe the identification and detailed characterization of the snowy cotyledon 2 mutant. The mutated SCO2 gene was identified using a map-based cloning strategy. SCO2 was shown to encode a novel protein which contains a single DnaJ-like zinc finger domain. The SCO2 protein fused to GFP was shown to be present in chloroplasts. Inactivation of SCO2 has almost no detectable impact on the levels of transcripts encoding plastid-specific proteins but leads to a significant reduction of plastid protein levels. Even though transcripts of SCO2 have been found ubiquitously in green tissues as well as in roots phenotypic changes due to SCO2 inactivation are confined to cotyledons. The cotyledons in embryos of sco2 are unaffected in their chloroplast biogenesis. Upon precocious germination seedlings of sco2 and wild type are indistinguishable. The SCO2 mutation affects chloroplast biogenesis only at the end of dormancy during seed germination. The transition from heterotrophic to autotrophic growth is dramatically impaired in sco2 when seedlings were kept in the dark for more than 5 days prior to light exposure.
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