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Foliar micromorphology as a tool for identification of Indian taxa of Polygonaceae

open access: yesJournal of Asia-Pacific Biodiversity, 2021
Polygonaceae, a morphologically diverse family, cosmopolite to temperate region. In India, the family has extensive array of distribution from the coastal plains to the subtropical temperate region and almost to the subalpine regions.
Payel Paul, Monoranjan Chowdhury
doaj   +1 more source

Genome-Wide Analysis of Lipoxygenase (LOX) Genes in Angiosperms

open access: yesPlants, 2023
Lipoxygenases (LOXs) are enzymes that catalyze the addition of an oxygen molecule to unsaturated fatty acids, thus forming hydroperoxides. In plants, these enzymes are encoded by a multigene family found in several organs with varying activity patterns ...
Paula Oliveira Camargo   +3 more
doaj   +1 more source

A large-scale species level dated angiosperm phylogeny for evolutionary and ecological analyses [PDF]

open access: yesBiodiversity Data Journal, 2020
Phylogenies are a central and indispensable tool for evolutionary and ecological research. Even though most angiosperm families are well investigated from a phylogenetic point of view, there are far less possibilities to carry out large-scale meta ...
Steven Janssens   +20 more
doaj   +3 more sources

Origin of Angiosperms: Problems, Challenges, and Solutions

open access: yesLife, 2023
Angiosperms are frequently assumed to constitute a monophyletic group. Therefore, the origin of angiosperms is a key question in systematic botany since the answer to this question is hinged with many questions concerned with angiosperm evolution ...
Xin Wang
doaj   +1 more source

Does polyploidy inhibit sex chromosome evolution in angiosperms?

open access: yesFrontiers in Plant Science, 2022
Dioecy is rare in flowering plants (5–6% of species), but is often controlled genetically by sex-linked regions (SLRs). It has so far been unclear whether, polyploidy affects sex chromosome evolution, as it does in animals, though polyploidy is quite ...
Li He, Elvira Hörandl
doaj   +1 more source

Structural Diversities and Phylogenetic Signals in Plastomes of the Early-Divergent Angiosperms: A Case Study in Saxifragales

open access: yesPlants, 2022
As representative of the early-divergent groups of angiosperms, Saxifragales is extremely divergent in morphology, comprising 15 families. Within this order, our previous case studies observed significant structural diversities among the plastomes of ...
Shiyun Han   +9 more
doaj   +1 more source

New Fossil Evidence Suggests That Angiosperms Flourished in the Middle Jurassic

open access: yesLife, 2023
Angiosperms are a group of plants with the highest rate of evolution, the largest number of species, the widest distribution and the strongest adaptability. Needless to say, angiosperms are the most important group for the humans.
Lei Han   +5 more
doaj   +1 more source

Patterns of Symmetry Expression in Angiosperms: Developmental and Evolutionary Lability

open access: yesFrontiers in Ecology and Evolution, 2020
Variation in flower symmetry is a remarkable aspect of flowering plant diversity. Multiple evolutionary transitions from an ancestral form of radial symmetry to bilateral symmetry and reversals from bilateral to radial symmetry have occurred during ...
Somayeh Naghiloo
doaj   +1 more source

The Occurrence and Distribution of Oleanane Biomarkers in Crude Oils as an Index [PDF]

open access: yesJournal of Petroleum Science and Technology, 2021
Oleanane biomarkers are age diagnostic indicators and source of organic matter input in fossil fuels which can unravels the stage of development of a petroleum system in the petroleum generating rock. Representative samples of crude oil obtained from two
Onojake Chukunedum, Selegha Abrakasa
doaj   +1 more source

Third-codon transversion rate-based _Nymphaea_ basal angiosperm phylogeny -- concordance with developmental evidence [PDF]

open access: yes, 2007
Flowering plants (angiosperms) appeared on Earth rather suddenly approximately 130 million years ago and underwent a massive expansion in the subsequent 10-12 million years.
(Max) Zong-Ming Cheng   +4 more
core   +2 more sources

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