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Tuesday, April 7, 2020
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Tag: anatomy

To explain relationships in life, you need a ‘Tree of Death’

Phylogenetics seeks to explain the relationships between organisms today, effectively drawing up a phylogeny, like a family tree. That means pulling together information on...

New insights into the biology of high-latitude Mesozoic trees

The presence in the specimens of both epicormic shoots and traumatic growth zones, combined with the observation of some disorientation of the wood structure in some parts of the trunks, suggest that these trees were growing under more stressful conditions than previously described trees from the Fremouw Formation.

Cracking the omega code: hydraulic architecture of the cycad leaf axis

The ancient order Cycadales (“cycads”), have a pattern of vascular bundles in the leaf axis, seen in transverse section as an inverted “omega”. In...

Stolon-tuber system and phylogeny of orchid-like bladderworts (Lentibulariaceae)

This study provides strong evidence, based on DNA sequences from two genomic compartments (plastid and nucleus) and morphology to group the Utricularia sect. Orchidioides into the sect. Iperua.

Plant anatomy goes back to its roots (stems, leaves…)

Does "Essentials of Developmental Plant Anatomy" cover the essentials of developmental plant anatomy? Nigel Chaffey looks over the introductory textbook.

Floral elaiophores of Vitekorchis, Cyrtochilum and Oncidium

Davies et al. compare the floral elaiophores (oil glands) of four species formerly assigned to Oncidium (Oncidiinae).

Stem anatomy and growth forms in perianth-bearing Piperales

Anatomical and morphological traits among the perianth-bearing Piperales are examined to detect trends in growth form evolution and developmental processes.

Hydraulic integration in tree root vessels

Johnson et al. measure xylem embolism resistance and connectivity in roots of two co-occurring tree species in a semi-arid habitat, Quercus fusiformis and Sideroxylon lanuginosum.

How orchids feed specialized bee pollinators

A survey of flowers of 16 species of Lockhartia determines that all have elaiophores (oil glands) of the trichomal type.

Floral elaiophore structure in the Gomesa and Oncidium clades

Recent molecular approaches have resulted in the re-circumscription of Gomesa and Oncidium (Orchidaceae; Oncidiinae), together with their respective clades. Stpiczyńska et al. compare the...

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Daffodils and Snowdrops react differently to warming seasons

Daffodils and Snowdrops need the right temperatures in a few seasons to germinate. Will a changing climate cause problems?

Changes in How a Plant Breathes Aren’t Always Matched by Changes in Its Anatomy

You can't predict how a Yucca gloriosa will react to drought from its anatomy alone.

New grapevine model better predicts whole-canopy gas exchange

Models considering only the maximum photosynthetic capacity for all leaves over-estimated net carbon dioxide exchange by nearly a third.

Phylogeny, age and adaptive evolution of genus Allium

The genus Allium L., one of the largest monocotyledonous genera and one that includes many economically important crops with nutritional and medicinal...