Cytoplasmic inheritance in green algae: patterns, mechanisms and relation to sex type

Miyamura, Shinichi

doi:10.1007/s10265-010-0309-6

Cited by 31 publications

(24 citation statements)

References 81 publications

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“…Although UPI is common, the mode (UPI male or mating type "minus" [mt − ], UPI female or mating type "plus" [mt + ], or BPI) can vary greatly among strains of green (chlorophytic) algal species (Miyamura 2010). For example, in the isogamous Ulva compressa, plastid DNA (ptDNA) inheritance can be UPI mt − , UPI mt + , or BPI, depending on the strains crossed, and mitochondrial DNA (mtDNA) inheritance is similarly variable.…”

Section: The Mode Of Inheritance For Mitochondria and Chloroplastsmentioning

confidence: 99%

DNA abandonment and the mechanisms of uniparental inheritance of mitochondria and chloroplasts

Bendich

2013

Chromosome Res

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For most eukaryotic organisms, the nuclear genomes of both parents are transmitted to the progeny following biparental inheritance. For mitochondria and chloroplasts, however, uniparental inheritance (UPI) is frequently observed. The maternal mode of inheritance for mitochondria in animals can be nearly absolute, suggesting an adaptive advantage for UPI. In other organisms, however, the mode of inheritance for mitochondria and chloroplasts can vary greatly even among strains of a species. Here, I review the data on the transmission of organellar DNA (orgDNA) from parent to progeny and the structure, copy number, and stability of orgDNA molecules. I propose that UPI is an incidental by-product of DNA abandonment, a process that lowers the metabolic cost of orgDNA repair.

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Section: The Mode Of Inheritance For Mitochondria and Chloroplastsmentioning

confidence: 99%

DNA abandonment and the mechanisms of uniparental inheritance of mitochondria and chloroplasts

Bendich

2013

Chromosome Res

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“…Since, the mode of organelle inheritance has been investigated in many groups (fig. 1); within the Chlorophyta, uniparental inheritance of both mtDNA and cpDNA has been reported in the Ulvophyceae, Chlorophyceae, and the Nephroselmidophyceae (Miyamura 2010). Uniparental inheritance of cpDNA has also been reported in the Trebouxiophyceae (Miyamura 2010).…”

Section: Introductionmentioning

confidence: 99%

“…1); within the Chlorophyta, uniparental inheritance of both mtDNA and cpDNA has been reported in the Ulvophyceae, Chlorophyceae, and the Nephroselmidophyceae (Miyamura 2010). Uniparental inheritance of cpDNA has also been reported in the Trebouxiophyceae (Miyamura 2010). Within the Streptophytes, extensive literature exists for land plants and converges to the overall conclusion that their organelles are mainly maternally transmitted with the exception of the cpDNA that is mainly paternally transmitted in the Gymnosperms (Birky 1995).…”

Section: Introductionmentioning

confidence: 99%

Organellar Inheritance in the Green Lineage: Insights from Ostreococcus tauri

Blanc-Mathieu

Sanchez-Ferandin

Eyre‐Walker

et al. 2013

Genome Biology and Evolution

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Along the green lineage (Chlorophyta and Streptophyta), mitochondria and chloroplast are mainly uniparentally transmitted and their evolution is thus clonal. The mode of organellar inheritance in their ancestor is less certain. The inability to make clear phylogenetic inference is partly due to a lack of information for deep branching organisms in this lineage. Here, we investigate organellar evolution in the early branching green alga Ostreococcus tauri using population genomics data from the complete mitochondrial and chloroplast genomes. The haplotype structure is consistent with clonal evolution in mitochondria, while we find evidence for recombination in the chloroplast genome. The number of recombination events in the genealogy of the chloroplast suggests that recombination, and thus biparental inheritance, is not rare. Consistent with the evidence of recombination, we find that the ratio of the number of nonsynonymous to the synonymous polymorphisms per site is lower in chloroplast than in the mitochondria genome. We also find evidence for the segregation of two selfish genetic elements in the chloroplast. These results shed light on the role of recombination and the evolutionary history of organellar inheritance in the green lineage.

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“…For this purpose, we used the inheritance pattern of chloroplast DNA (cp-DNA) as a mating type specific marker because cp-DNA is generally transmitted to the offspring from one of the two mating types in green algae (Miyamura 2010). For A. caliculus, Kuroiwa et al (1985) already reported that cp-DNA derived from one of the two parents disappears after gamete fusion, suggesting that cp-DNA transmits to the next generation from one of the two mating types in the same way as C. reinhardtii (Kuroiwa et al 1982).…”

Section: Resultsmentioning

confidence: 99%

Sex-Specific Cell Fusion Pattern of Isogametes in Marine Green Alga, <i>Acetabularia caliculus</i> (Ulvophyceae, Chlorophyta)

Miyamura

Nagumo

2016

CYTOLOGIA

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Summary Using field emission scanning electron microscopy (FE-SEM) and fluorescence microscopy, the respective relations between the arrangements of the gamete cell fusion site and the inheritance pattern of chloroplast DNA (cp-DNA) as a sex-specific marker were studied for the isogamous dasycladalean alga Acetabularia caliculus. The gamete had two flagella elongated from the cell anterior. One oval-shaped eyespot situated on the cell posterior was visualized using FE-SEM. When the gametes belonging to the opposite mating types were mixed together, the two gametes aligned side-by-side at their lateral side and fused to form a quadriflagellate planozygote. In the planozygote, the two flagella from the opposite mating type gametes lay side-by-side and two eyespots aligned on the same side of the cell, suggesting opposite positioning of the cell fusion sites between two parental gametes. To confirm whether the gamete fusion pattern observed in the planozygotes was a result of sex-specific fusion or not, the inheritance pattern of cp-DNA was observed using fluorescence microscopy after staining with DAPI concomitantly with the cell fusion pattern. When the eyespots were used as positional marker and were viewed from the surface that included the eyespots, the chloroplast of one parental gamete was found to contain cp-DNAs, although cp-DNAs were not detected in the chloroplast derived from another parental gamete. These results suggest that the gamete fusion pattern observed by FE-SEM was a result of sex-specific fusion.

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Cytoplasmic inheritance in green algae: patterns, mechanisms and relation to sex type

Cited by 31 publications

References 81 publications

DNA abandonment and the mechanisms of uniparental inheritance of mitochondria and chloroplasts

DNA abandonment and the mechanisms of uniparental inheritance of mitochondria and chloroplasts

Organellar Inheritance in the Green Lineage: Insights from Ostreococcus tauri

Sex-Specific Cell Fusion Pattern of Isogametes in Marine Green Alga, <i>Acetabularia caliculus</i> (Ulvophyceae, Chlorophyta)

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