Motile Gametes of Land Plants: Diversity, Development, and Evolution

Renzaglia, Karen S.; Garbary, David J.

doi:10.1080/20013591099209

Cited by 128 publications

(113 citation statements)

References 205 publications

(246 reference statements)

Supporting

Mentioning

107

Contrasting

Order By: Relevance

“…This is further supported by the findings of McDaniel (2005) who showed that there is a tradeoff between allocation to reproductive and vegetative tissue in C. purpureus males, but not in females. A greater physiological investment to male sexual structures, such as lipid and starch rich sperm (Paolillo, 1979;Renzaglia & Garbary, 2001) and mucilage exuded by paraphyses (Harvey-Gibson & MillerBrown, 1927) and may provide a richer storehouse of resources for fungi to exploit, which may in turn explain the significantly greater fungal biomass and richness associated with male tissues in this study. These components have been observed to serve as attractants and food for arthropods (Harvey-Gibson & Miller-Brown, 1927) supporting the possibility of them being a food source for microbiota as well.…”

Section: Purpureusmentioning

confidence: 60%

Sex-Specific Fungal Communities of the Dioicous Moss Ceratodon purpureus

Balkan¹

2000

View full text Add to dashboard Cite

Mosses display a number of hallmark life history traits that influence their ecology at the population and community level. The long lived separation of sexes observed in the haploid gametophyte (dioicy) is one such feature of particular importance, as it is observed in the majority of bryophytes and creates intraspecific specialization of male and female individuals.The prevalence of sexually dimorphic mosses raises the possibility of sex-specific interactions with fungi as observed in some vascular plants. Here I investigated how moss sex shapes fungal communities associated with gametophytic tissues of the ubiquitous moss, Ceratodon purpureus. Using greenhouse populations of C. purpureus grown in a common garden, I examined fungal community structure and overall abundance of fungal biomass associated with male and female individuals from multiple populations. I hypothesized that individual mosses would harbor unique fungal communities based on their sex, and that overall fungal biomass associated with host tissues would differ significantly due to differences in morphological and physiological characteristics between the sexes. I found that fungal community composition and overall abundance (i.e. biomass) differ between male and female individuals of C. purpureus, and that sex-specific patterns are retained across individuals from three different populations. This work provides a first glance at how genetically based sexual systems in early land plants influence affiliated fungal community composition.ii Acknowledgments

show abstract

Section: Purpureusmentioning

confidence: 60%

Sex-Specific Fungal Communities of the Dioicous Moss Ceratodon purpureus

Balkan¹

2000

View full text Add to dashboard Cite

show abstract

“…For instance, the microtubules of the flagellar axonemes of water fern Marsilea vestita have the typical 9 + 2 arrangement with only inner dynein arms present (Hyams, 1985). Flagellated sperm cells also develop in ancient gymnosperms, Ginkgo and cycads, which are the only seed producing plants (spermatophytes) that have motile or free swimming sperm (Vaughn and Renzaglia, 2006) with abundant flagellar apparatus (100-50,000 flagella per cells) (Renzaglia and Garbary, 2001). Thus, higher plants have high molecular weight antigen that shares biochemical and immunological properties with DHC, yet its identity remains unclear.…”

Section: Dyneinmentioning

confidence: 99%

Microtubules During the Cell Cycle of Higher Plant Cells

Smirnova¹

2012

Current Frontiers and Perspectives in Cell Biology

View full text Add to dashboard Cite

“…Cladistic analyses based solely on spermatogenesis repeatedly have supported nesting of Equisetum within a monophyletic fern assemblage (Garbary et al , 1993;Mishler et al , 1994;Maden et al , 1997;Renzaglia et al , 2000;Renzaglia & Garbary, 2001). This evolutionary affinity has been reinforced by morphological analyses (Kenrick & Crane, 1997;Renzaglia & Garbary, 2001), and molecular analyses using a single gene (Duff & Nickrent, 1998) or multiple genes Pryer et al , 2001). As a morphologically distinct genus in the fern clade with an evolutionary history that dates back to the mid-Devonian (Kenrick & Crane, 1997), Equisetum is a central taxon in understanding pteridophyte diversification.…”

Section: Introductionmentioning

confidence: 99%

“…Contemporary descriptions of the architecture of sperm cells in pteridophytes have revealed a complexity and degree of diversity that is unparalleled in other groups of eukaryotes (Renzaglia et al , 2000;Renzaglia & Garbary, 2001). Male gametes in pteridophytes range from relatively simple, slightly coiled biflagellated cells (lycophytes) to highly elaborate helical cells with multiple flagella (ferns).…”

Section: Introductionmentioning

confidence: 99%

Novel features of Equisetum arvense spermatozoids: insights into pteridophyte evolution

et al. 2002

View full text Add to dashboard Cite

Summary• To characterize structural diversity within Equisetum and among pteridophytes, architectural features of the sperm cell are described here in a second subgenus of Equisetum , a divergent basal group in the fern clade.• Transmission electron microscopy observations of prereleased spermatozoids of Equisetum arvense were correlated with three-dimensional scanning electron microscopy images of swimming cells.• The mature spermatozoid completes a helix of approximately 2.5 revolutions. At the cell anterior is a complex multilayered locomotory apparatus with staggered flagella. Mitochondria (elongated-rounded) are aggregated near the locomotory apparatus and organelles extend along the cell length. The spline contains up to 300 microtubules and wraps in part around the long cylindrical nucleus. In swimming sperm cells, the anterior of the cell remains tightly coiled while the posterior relaxes and extends in a trailing fashion.• Spermatozoids of Equisetum arvense are smaller than those of Equisetum hyemale but structurally similar, except for nuclear shape. Conservation of cellular features suggests recent radiation of the genus. Equisetum spermatozoids share several critical features with ferns, including Psilotum , and support monophyly of a fern-Equisetum assemblage. Entry of the male gametes of Equisetum in their entirety into the archegonial venters indicates possible biparental inheritance of chloroplast and mitochondrial genomes.

show abstract

Motile Gametes of Land Plants: Diversity, Development, and Evolution

Cited by 128 publications

References 205 publications

Sex-Specific Fungal Communities of the Dioicous Moss Ceratodon purpureus

Sex-Specific Fungal Communities of the Dioicous Moss Ceratodon purpureus

Microtubules During the Cell Cycle of Higher Plant Cells

Novel features of Equisetum arvense spermatozoids: insights into pteridophyte evolution

Contact Info

Product

Resources

About