Results 81 to 90 of about 1,482 (215)

Parasitic plants have increased rates of molecular evolution across all three genomes

open access: yes, 2015
BACKGROUND Theoretical models and experimental evidence suggest that rates of molecular evolution could be raised in parasitic organisms compared to non-parasitic taxa. Parasitic plants provide an ideal test for these predictions, as there are at least a
Bromham, Lindell   +2 more
core   +1 more source

Phylogenetic Relationships in Phoradendreae (Viscaceae) Inferred from Three Regions of the Nuclear Ribosomal Cistron. II. The North American Species of Phoradendron [PDF]

open access: yes, 2000
A parsimony analysis based on sequences from the ITS region and two partitions of the 26S subunit of nuclear ribosomal DNA was used to infer phylogenetic relationships among the North American species of Phoradendron.
Ashworth, Vanessa E. T. M.
core   +3 more sources

The Southern Beeches: an introduction to the genus Nothofagus Blume

open access: yesCurtis's Botanical Magazine, Volume 41, Issue 4, Page 439-456, December 2024.
Summary An overview of the genus Nothofagus is provided, covering the history of its discovery for science, the fossil record and its taxonomy and systematics. The disputed split of the genus is discussed. A summary description for the genus is presented, alongside a list of known hybrids.
Olivia Steed‐Mundin
wiley   +1 more source

Single-copy nuclear genes place haustorial Hydnoraceae within piperales and reveal a cretaceous origin of multiple parasitic angiosperm lineages. [PDF]

open access: yesPLoS ONE, 2013
Extreme haustorial parasites have long captured the interest of naturalists and scientists with their greatly reduced and highly specialized morphology. Along with the reduction or loss of photosynthesis, the plastid genome often decays as photosynthetic
Julia Naumann   +10 more
doaj   +1 more source

INDEPENDENT ORIGINATION OF FLORAL ZYGOMORPHY, A PREDICTED ADAPTIVE RESPONSE TO POLLINATORS: DEVELOPMENTAL AND GENETIC MECHANISMS [PDF]

open access: yes, 2016
Observations of floral development indicate that floral organ initiation in pentapetalous flowers more commonly results in a medially positioned abaxial petal (MAB) than in a medially positioned adaxial petal (MAD), where the medial plane is defined by ...
Bukhari, Ghadeer, Zhang, Wenheng
core   +1 more source

Plastome evolution in hemiparasitic mistletoes [PDF]

open access: yes, 2015
Santalales is an order of plants consisting almost entirely of parasites. Some, such as Osyris, are facultative root parasites whereas others, such as Viscum, are obligate stem parasitic mistletoes.
Cuenca Navarro, Argelia   +2 more
core   +1 more source

Repeated shifts out of tropical climates preceded by whole genome duplication

open access: yesNew Phytologist, Volume 244, Issue 6, Page 2561-2575, December 2024.
Summary While flowering plants have diversified in virtually every terrestrial clime, climate constrains the distribution of individual lineages. Overcoming climatic constraints may be associated with diverse evolutionary phenomena including whole genome duplication (WGD), gene‐tree conflict, and life‐history changes.
Tom Carruthers   +10 more
wiley   +1 more source

Distribution of sex forms in the phanerogamic flora [PDF]

open access: yes, 2007
In the plant kingdom, particularly in the phanerogamic flora, hermaphroditism is by far the most common, yet the number of other sex forms is not negligible.
Yampolsky, Cecil, Yampolsky, Helene
core  

Incidence, correlates, and origins of dioecy in the Island Flora of New Caledonia [PDF]

open access: yes, 2014
Premise of research. Because it is an inherently risky sexual system, dioecy is globally rare. Attempts to explain unusually high incidences of dioecy on certain islands have generated a considerable literature on the relationships among dioecy, its ...
Lowry, P. P.   +3 more
core   +2 more sources

Mitochondria in parasitic plants [PDF]

open access: yes, 2020
Plant mitochondrial genomes are renowned for their structural complexity, extreme variation in size and mutation rates, and ability to incorporate foreign DNA.
Anderson, Benjamin   +4 more
core   +2 more sources

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