Fertile plants of Lejeunea capensis were found in Tucumán, Argentina. The population discovered the Chaco Serrano represents a new location with respect to nearest occurrences Northwest Argentina and is first record sporophyte-bearing plants. Here we provide an amended description illustration including data sporophyte L. capensis.

Plants, unlike animals, alternate multicellular diploid, and haploid generations in their life cycle. While this is widespread all along the plant kingdom, the size and autonomy of the diploid sporophyte and the haploid gametophyte generations vary along evolution. Vascular plants show an evolutionary trend toward a reduction of the gametophyte, reflected both in size and lifespan, together wit...

The plant life cycle is characterized by the alternation of generations between a diploid sporophyte and a haploid gametophyte. The sporophyte functions to produce spores, which then develop into gametophytes. The differentiated gametophytes in turn produce either the male gametes (sperm) or female gametes (egg cells). In contrast to lower plant species, in which the gametophyte is the dominant...

BACKGROUND AND AIMS Actively growing post-embryonic sporophytes of desert mosses are restricted to the cooler, wetter months. However, most desert mosses have perennial gametophytes. It is hypothesized that these life history patterns are due in part to a reduced thermotolerance for sporophytes relative to gametophytes. METHODS Gametophytes with attached embryonic sporophytes of Microbryum st...

The evolution of land plants is tightly linked to the evolution of the alternation of generations. Because alternating ploidal generations share their genomes, investigating generation-biased gene expression can give insight into the evolution of life cycles in land plants. Toward this end, we describe gene expression differences associated with the alternation of isogenic sporophyte and gameto...

Using a mixed culture of megaspores and microspores from I. coreana, we established high frequency sporophyte regeneration system. After 20 days of culturing in MS basal medium, microscopic examination showed significant morphological changes and the microspore released numerous small vesicles into the culture medium. Megaspores also showed dramatic morphological changes during its incubation t...

Unlike animals, which produce single-celled gametes directly from meiotic products, plants have generations which alternate between the diploid sporophyte and haploid gametophyte (Figure 1A). The diploid sporophytic generation develops from the zygote, the fusion product of haploid gametes. Sporophytic cells undergo meiosis to produce haploid spores, which divide mitotically to form the multice...

We report and discuss the results of a quantitative reverse transcription polymerase chain reaction (qRT-PCR) analysis of the expression patterns of seven three amino acid loop extension (TALE) homeobox genes (four KNOTTED-like homeobox (KNOX) and three BEL1-like homeobox (BELL) genes) identified after next generation sequencing (NGS) and assembly of the sporophyte and gametophyte transcriptome...