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Tag: "seeds" at biology news

Max Planck researchers make a breakthrough in plant stem cell research

...ound parts of a plant - leaves, stem, flowers, and seeds - ultimately are derived from cells of a small tissue at the tip of the shoot. Biologists call this tissue the "apical meristem", and it contains totipotent stem cells that are active throughout the life of the plant. Unlike the stem cells of animals...

NJIT study shows nanoparticles could damage plant life

...JIT. The authors conducted the study by allowing seeds to germinate on wet filter paper in Petri dishes, ...utes to the growth-slowing interaction between the seeds and the nanoparticles. The small size of the nanoparticles may be changed by the nanoparticles aggre...

Biotech cotton 8: Bugs 0

...l in the field infected." The caterpillars eat the seeds and damage the developing cotton fibers. In contrast, when the caterpillars eat Bt cotton, they die. Before the use of Bt cotton became widespread, pink bollworm was one of the top three insect pests of cotton in the Southwest. In 1995, losses from...

GM crop that holds on to its seeds offers higher yields

...ause the seedpods open naturally to disperse their seeds at different times, part of each harvest is lost. ...rmers to rotate crops because prematurely released seeds can germinate and become weeds. Researchers, led by Lars Østergaard from the University of Californ...

Kenya halts first field trials of GM maize

...enyan GM commitment ). When the first IRMA maize seeds were sown outside in May, Kenya became the first African country after South Africa to plant GM maize in open fields ( see Kenya begins first open field trials of GM maize ). The IRMA researchers had hoped to release the maize to farmers by 2010 ( se...

Newly recognized gene mutation may reduce seeds, resurrect plants

...ituation, for example, plants will get rid of some seeds so that they can support growth of at least a few ... a large proportion of small, wrinkled, non-viable seeds with aborted embryos. These contained only 34 percent of the normal amount of lipids. "It appeared ...

Corn grain mould used as pesticide

...within the US safety limit for animal food ?cotton seeds serve as food e.g. for dairy cattle. Two years ago the 'good' mould was permitted in the US as an organic pesticide. Five kilos of mould-infected grains of corn are sufficient to 'inoculate' an area of one hectare ?this means that the method is rela...

Genetically modified maize not found in southern Mexico

...hern Mexico. After analyzing tens of thousands of seeds from maize crops grown in 2003 and 2004, researche... study, the researchers gathered more than 153,000 seeds from 870 maize plants in 125 fields in Oaxaca . They sent these seeds to two commercial companies in...

Birds and bats sow tropical seeds

...ill exist in it is dispersal-limited. That is, the seeds don't get there." Howe said most tropical areas r...e available all year, so a seasonal progression of seeds from longer-living deep forest species should be carried with the bats and birds. Other tracts will ...

Researcher gets NSF grant to create mutant maize lines

... single genes, one at a time, but also will create seeds for each mutation, or disrupted gene. The seeds will be made widely available to researchers. The new maize lines could one day lead to plants with...

Mechanism for the captation of nutrients in plants- unknown to date

...lls of the reserve organs - such as roots, tubers, seeds or fruits - "swallow up" nutrients in order to metabolise and store them. These "swallowed-up" substances are incorporated into micro-vesicles that end up pouring their contents into an internal compartment of a vegetable cell known as the vacuola. O...

Genome study of beneficial microbe may help boost plant health

...s fluorescens Pf-5, naturally safeguards roots and seeds from infection by harmful microbes that cause plant diseases. The genome paper will be published in Nature Biotechnology and was scheduled to be posted online on June 26. "The genome sequence has helped us identify new chemical pathways that the mic...

Primates on the brink

...r surrounding ecosystems. Through the dispersal of seeds and other interactions with their environments, primates help support a wide range of plant and animal life that make up the Earth's forests. The 2004-2006 list focuses on the severity of the overall threat rather than mere numbers. Some on the list...

At long last, scientists figure out how plants grow

...ies, for example, auxin produced by the developing seeds promotes the growth of a red and juicy fruit. Another protein called ABP1 (Auxin Binding Protein 1) has previously been shown to bind auxin. But unlike TIR1 and auxin, it remains unclear whether the pairing of ABP1 and auxin actually stimulates plan...

Vascular structure and function improve with diet and exercise

... other forms of cereals, potatoes, beans, nuts and seeds with olive oil as an important fat source, and low to moderate amounts of dairy, fish and poultry. "There have been studies looking at diet and exercise to prevent or treat cardiovascular disease," said primary investigator Robert J. Petrella, M.D.,...

Iron Deficiency Sparks Dramatic Changes In Gene Expression

...ts, shellfish dried fruits, whole grains, spinach, seeds andother foods.Their study in yeast cells demonstrated that iron-starved cellspreserve the little iron they possess by shutting down the major ironusers in order to maintain the cell's essential functions, said DennisJ. Thiele, Ph.D., professor of Ph...

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