Plant Cuttings

Plant Cuttings

Cupins: What are they for?

First, we ought to say what cupins are: cupins are proteins, part of a so-called superfamily that includes enzymes and non-enzyme polypeptides. Since the first members of this group were described in plants – the cereal seed storage proteins, the germins – they’ve been identified in a wide range of organisms. Aside from a role […]

Plant Cuttings

The interconnectedness of plant studies

Have you ever wondered how the monthly Plant Cuttings’ collection comes to be? Do you think Mr P Cuttings knows in advance what he’s going to write about each month? He has a notional idea of the items he wants to cover, but he usually has no idea where a news item will actually go […]

Plant Cuttings

Decision time: Inorganic or Organic..?

Plants need appropriate amounts of essential nutrients if they are to grow fully and generate the yield of which they are capable. Quite often, however, one of those essentials – principally, nitrogen (N) – is in insufficient supply in the soil. To achieve maximum crop yields those missing nutrient(s) are added by humans. Traditionally, that […]

Plant Cuttings

A fresh look at guard cell walls

Arguably, one of the best known ‘structure-function’ relationships in plant biology is the role played by cellulose microfibrils within the walls of the guard cells in stomatal opening. Stomata* are the controllable orifices found primarily within the epidermis of the above-ground organs of higher plants. When open they permit ready exchange of gases (e.g. CO2, […]

Plant Cuttings

Good things come in small packages

And few eukaryotic things are smaller than diatoms, unicellular algae that are common, numerous and taxonomically extremely diverse, particularly in the oceans. Small? Yes, typically 20 – 200 µm in diameter. Good? Yes; their annual explosion in numbers during the first quarter of the year – the so-called spring phytoplankton bloom – essentially kick-starts productivity […]

Plant Cuttings

Plants and Pinatubo, Prestahnukur, Popocatépetl…

Plants are generally sessile organisms that, unlike their puny animal ‘cousins’, can’t get up and run away if the environment is not to their liking. Botanicals by-and-large put up and shut up. Accordingly, that fundamental fact of their existence has led them to adapt to a remarkable array of abiotic factors, e.g. temperature, drought, high […]

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