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Latest Plant hormone Stories

2010-11-11 22:14:02

Tinkering with a single gene may give perennial grasses more robust roots and speed up the timeline for creating biofuels, according to researchers at the Duke Institute for Genome Sciences & Policy (IGSP). Perennial grasses, including switchgrass and miscanthus, are important biofuels crops and can be harvested repeatedly, just like lawn grass, said Philip Benfey, director of the IGSP Center for Systems Biology. But before that can happen, the root system needs time to get established....

2010-10-26 13:53:32

Greenhouse plant growers can substitute rice hulls for perlite in their media without the need for an increase in growth regulators, according to a Purdue University study. Growing media for ornamental plants often consists of a soilless mix of peat and perlite, a processed mineral used to increase drainage. Growers also regularly use plant-growth regulators to ensure consistent and desired plant characteristics such as height to meet market demands. Organic substitutes for perlite like tree...

2010-09-29 14:08:07

Study could help produce alternative to genetically-engineered crops to combat global food shortages New findings from Van Andel Research Institute (VARI) scientists could lead to environmentally-friendly sprays that help plants survive drought and other stresses in harsh environments to combat global food shortages.  The study is a follow-up to findings published in Nature last year that were named among the top breakthroughs of 2009 by Science magazine. "I think that the work...

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...

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2010-06-25 07:47:26

The two most important growth hormones of plants, so far considered antagonists, also work synergistically. The activities of auxin and cytokinin, key molecules for plant growth and the formation of organs, such as leaves and buds, are in fact more closely interwoven than previously assumed. Scientists from Heidelberg, Tbingen (Germany) and Umea (Sweden) made this surprising discovery in a series of complex experiments using thale cress (Arabidopsis thaliana), a biological reference organism....

2010-06-15 00:51:14

New research published by Cell Press in the June 15th issue of the journal Developmental Cell, reveals how plants modify their root architecture based on nutrient availability in the soil. Plants obtain most necessary nutrients by taking them up from the soil into their roots. Although plants cannot move to a new environment when nutrient availability is less than favorable, they can modify their development to favor root colonization of soil areas where nutrients are abundant. Therefore,...

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2010-05-17 13:40:58

Between shoot and root, TAU unlocks a new tool for the biofuel industry Plant geneticists are on a determined quest "” to control auxin, a powerful plant growth hormone. Auxin tells plants how to grow, where to lay down roots, how to make tissues, and how to respond to light and gravity. Knowing how to manipulate auxin could thus have enormous implications for the production of biofuel, making plants grow faster and better. A recent publication in the journal PLoS Biology from the...

2010-05-14 13:20:53

Findings could lead to new strategies for sustainable agriculture and biofuel production You might think bacteria that "invade" trees are there to cause certain destruction. But like the helpful bacteria that live within our guts, some microbes help plants thrive. To find out what makes these microbe-plant interactions "tick," scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory decoded the genome of a plant-dwelling microbe they'd previously shown could increase...

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2010-05-07 09:24:31

People aren't the only living things that suffer from stress. Trees must deal with stress too. It can come from a lack of water or too much water, from scarcity of a needed nutrient, from pollution or a changing climate. Helping trees and crops adapt to stress quickly and efficiently is a pressing goal of plant biologists worldwide. Now research led by Michigan Technological University scientists has identified the molecular mechanism that Populus"”the scientific name for common...

2010-04-16 13:41:41

Trinexapac-ethyl proves effective during prolonged periods of drought stress Irrigation water for turfgrass has become increasingly restricted due to environmental factors such as insufficient precipitation; increased domestic, agricultural, and industrial consumption; and contamination of potable water supplies. This water deficit has created an increased need to identify promising water conservation strategies and implement stringent restrictions in water use. In their ongoing search for...


Word of the Day
grass-comber
  • A landsman who is making his first voyage at sea; a novice who enters naval service from rural life.
According to the OED, a grass-comber is also 'a sailor's term for one who has been a farm-labourer.'