leaves

Why autumn leaves are different in America and in Europe?

harminka — Thu, 13 Aug 2009 08:17:46 -0500

A new theory, concluded by researchers from the University of Haifa, Israel, and the University of Kuopio in Finland, reaches 35 million years back in time to solve the puzzle

Researchers successfully simulate photosynthesis, design better leaf

harminka — Sat, 10 Nov 2007 04:01:34 -0600

University of Illinois researchers have built a better plant, one that produces more leaves and fruit without needing extra fertilizer. The researchers accomplished the feat using a computer model that mimics the process of evolution. Theirs is the first model to simulate every step of the photosynthetic process.

Ripe Fruit Preferred

harminka — Tue, 06 Nov 2007 12:52:50 -0600

Fall, the season of colors: Leaves turn red, yellow, and brown. The disappearance of the color green and the simultaneous appearance of these other colors are also signs of ripening fruit. A team led by Bernhard Kräutler at the University of Innsbruck (Austria) has now determined that the breakdown of chlorophyll in ripening apples and pears produces the same decomposition products as those in brightly colored leaves.

Why do autumn leaves bother to turn red?

harminka — Sat, 27 Oct 2007 13:21:22 -0500

Soils may dictate the array of fall colors as much as the trees rooted in them, according to a forest survey out of North Carolina.

How 'Mother of Thousands' Makes Plantlets

harminka — Wed, 03 Oct 2007 13:02:05 -0500

New research shows how the houseplant "mother of thousands" (Kalanchoe diagremontiana) makes the tiny plantlets that drop from the edges of its leaves. Having lost the ability to make viable seeds, the plant has shifted some of the processes that make seeds to the leaves, said Neelima Sinha, professor of plant biology at UC Davis.

New research into plant colors sheds light on antioxidants

harminka — Wed, 03 Oct 2007 07:24:21 -0500

Scientists have made an important advance in understanding the genetic processes that give flowers, leaves and plants their bright colours. The knowledge could lead to a range of benefits, including better understanding of the cancer-fighting properties of plant pigments and new, natural food colourings.

Isoprene emission from plants

harminka — Thu, 26 Jul 2007 16:12:06 -0500

Isoprene is a hydrocarbon volatile compound emitted in high quantities by many woody plant species, with significant impact on atmospheric chemistry. The Australian Blue Mountains and the Blue Ridge Mountains in the Eastern United States are so called because of the spectral properties of the huge amounts of isoprenes emitted from the trees growing there.

How plants manage calcium may reduce effects of acid rain

harminka — Fri, 09 Mar 2007 12:43:47 -0600

'Speechless' and 'Mute' help break silence of leaves

harminka — Fri, 19 Jan 2007 07:13:35 -0600