Results 61 to 70 of about 23,229 (278)

Stable demographic ratios of haploid gametophyte to diploid sporophyte abundance in macroalgal populations.

open access: yesPLoS ONE
Macroalgal populations often consist of free-living haploid (gametophyte) and diploid (sporophyte) stages. Various ecological studies have been conducted to examine the demographic diversity of haploid-diploid populations with regard to the dominant ...
Kazuhiro Bessho
doaj   +1 more source

Metabolism and Development during Conidial Germination in Response to a Carbon-Nitrogen-Rich Synthetic or a Natural Source of Nutrition in Neurospora crassa

open access: yesmBio, 2019
Fungal spores germinate and undergo vegetative growth, leading to either asexual or sexual reproductive dispersal. Previous research has indicated that among developmental regulatory genes, expression is conserved across nutritional environments, whereas
Zheng Wang   +5 more
doaj   +1 more source

Unusually Large Number of Mutations in Asexually Reproducing Clonal Planarian Dugesia japonica. [PDF]

open access: yesPLoS ONE, 2015
We established a laboratory clonal strain of freshwater planarian (Dugesia japonica) that was derived from a single individual and that continued to undergo autotomous asexual reproduction for more than 20 years, and we performed large-scale genome ...
Osamu Nishimura   +7 more
doaj   +1 more source

Asexual reproduction of Carukia barnesi polyps.

open access: yes, 2016
I. The initial stage of lateral budding. II. Formed ciliated swimming stage polyp prior to detachment. III. Large mature polyp undergoing asexual reproduction. IV. Detached swimming stage polyp. Letters indicate: a) retracted tentacle; b) swelling of the
Jamie Seymour (113261)   +2 more
core   +1 more source

Speciation with gene flow

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Biodiversity is threatened by human activities, with extinction debt accumulating rapidly. Many of these activities change the connectivity of populations, fragmenting existing population systems or bringing previously isolated populations or species into contact.
Zhiqin Long   +7 more
wiley   +1 more source

A key role for sex chromosomes in the regulation of parthenogenesis in the brown alga Ectocarpus.

open access: yesPLoS Genetics, 2019
Although evolutionary transitions from sexual to asexual reproduction are frequent in eukaryotes, the genetic bases of these shifts remain largely elusive.
Laure Mignerot   +6 more
doaj   +1 more source

Biology of Pseudopotamilla reniformis (Müller 1771) in the White Sea, with description of asexual reproduction

open access: yes, 2013
The tube-dwelling polychaete Pseudopotamilla reniformis (Sabellidae) forms dense and complex aggregations of flexible tubes on hard substrates in the subtidal zone of the White Sea.
Tzetlin, Alexander B   +2 more
core   +1 more source

Management and incipient domestication of Chamaedorea tepejilote in agroforestry systems in Mexico

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Native wild plants are key elements in addressing global biodiversity loss and supporting sustainable food systems. We investigated how rural communities in Mexico manage Chamaedorea tepejilote, a wild palm with edible male inflorescences, by combining ethnobotanical, genetic, morphological and ecological approaches.
Viviana Andrade   +7 more
wiley   +1 more source

Expansion of genes encoding piRNA-associated argonaute proteins in the pea aphid: diversification of expression profiles in different plastic morphs. [PDF]

open access: yesPLoS ONE, 2011
Piwi-interacting RNAs (piRNAs) are known to regulate transposon activity in germ cells of several animal models that propagate sexually. However, the role of piRNAs during asexual reproduction remains almost unknown.
Hsiao-Ling Lu   +9 more
doaj   +1 more source

The epidemiology of the blackleg pathogen, Leptosphaeria maculans, impacts fungicide resistance management strategies

open access: yesPest Management Science, EarlyView.
Understanding how infection timing drives disease is essential for the development of fungicide resistance management strategies. For blackleg disease of canola, all infection timings can contribute to the following generation, therefore all fungicide applications have the ability to select for resistance.
Alec J McCallum   +3 more
wiley   +1 more source

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