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Latest Auxins Stories

Why Are Leaf Epidermal Cells Shaped Like A Jigsaw Puzzle Piece?
2014-03-14 15:02:41

University of California - Riverside UC Riverside scientists discover auxin sensing and signaling complex on plant cell surface that explains why leaf epidermal cells have jigsaw puzzle-piece shapes Auxin, a small molecule, is a plant hormone discovered by Charles Darwin about 100 years ago. Over the years that followed it became understood to be the most important and versatile plant hormone controlling nearly all aspects of plant growth and development, such as bending of shoots...

What Makes Plants Grow Toward The Light?
2013-05-28 14:02:26

Technische Universität München Plants have developed a number of strategies to capture the maximum amount of sunlight through their leaves. As we know from looking at plants on a windowsill, they grow toward the sunlight to be able to generate energy by photosynthesis. Now an international team of scientists has provided definitive insights into the driving force behind this movement — the plant hormone auxin. The growth of plants toward light is...

2012-04-16 21:37:40

Have you ever wondered why stems grow upwards and roots downwards? Why plants always seem to turn towards the light and climbing plants run up the trellis rather than down? The answer is simple: auxin! But maybe not that simple, since plant hormones — and auxin is a plant hormone — are regulated by complex combinations of various processes. Elke Barbez, Jürgen Kleine-Vehn and Jirí  Friml, connected to VIB and UGent recently identified an...

2011-10-24 22:48:47

Biologists at the University of California, San Diego have succeeded in unraveling, for the first time, the complete chain of biochemical reactions that controls the synthesis of auxin, the hormone that regulates nearly all aspects of plant growth and development. Their discovery, detailed in a paper in this week's online edition of the Proceedings of the National Academy of Sciences, will allow agricultural scientists to develop new ways to enhance or manipulate auxin production to...

2011-03-02 19:55:33

A Purdue University scientist and researchers in Japan have produced a new class of improved plant growth regulators that are expected to be less toxic to humans. Angus Murphy, a professor of horticulture, said the growth inhibitors block the transport of auxin, a plant hormone that, when transported throughout the plant, controls growth processes. Current growth regulators that inhibit auxin transport are inefficient because they also have hormonelike activity or affect other important plant...

2010-12-17 17:12:57

The molecular basis of shade avoidance reaction PNAS report on a collaborative study involving RUB scientists Plants that "lose the battle" during competitiveness for light because they are shaded by larger neighbours, counteract. They adapt by rapid shoot elongation and stretch their leaves towards the sun. The molecular basis of this so-called shade avoidance syndrome had been unclarified to date. Research scientists from the Utrecht University in the Netherlands and the Ruhr University in...

2010-08-24 13:55:32

A biosensor utilizing black platinum and carbon nanotubes developed at Purdue University will help give scientists a better understanding of how the plant hormone auxin regulates root growth and seedling establishment. Marshall Porterfield, an associate professor of agricultural and biological engineering and biomedical engineering, created a new sensor to detect the movement of auxin along a plant's root surface in real time without damaging the plants. The nanomaterials at the sensor's tip...

2008-12-15 09:53:26

Important step forward towards increasing crop yields by enabling plants to take up nutrients and water more efficientlyIn the face of climate change, being able to increase crop yields by enabling plants to take up nutrients and water more efficiently becomes increasingly important, as fertiliser and water supplies incur significant energy and environmental costs.New research from the University of Bristol, published today in Nature Cell Biology, has shown how to increase the length of root...

2008-08-09 03:00:24

By Yang, Yue Xu, Richard; Ma, Choong-je; Vlot, A Corina; Klessig, Daniel F; Pichersky, Eran The plant hormone auxin (indole-3-acetic acid [IAA]) is found both free and conjugated to a variety of carbohydrates, amino acids, and peptides. We have recently shown that IAA could be converted to its methyl ester (MeIAA) by the Arabidopsis (Arabidopsis thaliana) enzyme IAA carboxyl methyltransferase 1. However, the presence and function of MeIAA in vivo remains unclear. Recently, it has been shown...


Word of the Day
barghest
  • A goblin in English folklore, often appearing in the shape of a large dog and believed to portend imminent death or misfortune.
  • A ghost, wraith, hobgoblin, elf, or spirit.
The origin of 'barghest' is not known, but it may be from perhaps burh-ghest, town-ghost, or German Berg-geist (mountain spirit) or Bär-geist (bear-spirit).
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