HOME >> BIOLOGY >> NEWS
Study explores plant phenotypic plasticity belowground

When we think of organisms actively searching for resources (foraging) we generally think of things like wolves stalking elk or butterflies finding flowers. Why don't we also think about plants growing roots through the soil? Although they cannot run or fly, plants forage too, for soil nutrients by growing more roots in response to locally high nutrient levels.

One of the most widely accepted explanations of why plants differ in their ability to place roots selectively in patches is known as the "scale-precision tradeoff" theory. Underlying the theory is the idea that large, dominant plants forage over large distances ("foraging scale") but are unable to place their roots precisely ("foraging precision"), while small, subordinate plants are able to coexist with the dominants, in part, because they exhibit greater foraging precision.

In an article in the August 2005 issue of The American Naturalist, Steven Kembel and James Cahill test the validity of this foraging trade-off theory using a data set of more than 100 species, compiled from previously published studies. Consistent with other studies, they found that species vary greatly in the precision with which they forage, with grasses generally less precise foragers than broad-leafed plants. However, the ability to forage precisely in response to nutrient patches is completely unrelated to plant size. Surprisingly, most species grew bigger when soil resources were patchy instead of evenly distributed, regardless of whether they were precise foragers or not. This research opens up new avenues of inquiry about the ecological significance of plant foraging strategies.


'"/>

Contact: Carrie Olivia Adams
coa@press.uchicago.edu
773-834-0386
University of Chicago Press Journals
26-Jul-2005


Page: 1

Related biology news :

1. Study begins to reveal clues to the cause and progression of sepsis
2. Study finds gender differences in renal and other genes contributing to blood pressure
3. Study suggests estrogen deficiency can lead to obesity-induced high blood pressure after menopause
4. Study: Sticking to the sand might not be such good, clean fun for beachgoers
5. Study points to new way to predict death risk from torn aorta
6. Study identifies new gene therapy tools for inherited blindness
7. Study finds contaminated water reaching Floridas offshore keys
8. Study sheds light on why humans walk on two legs
9. Study explains how pathogens evolve to escape detection
10. Study finds hereditary link to premenstrual depression
11. Study identifies energy efficiency as reason for evolution of upright walking

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/14/2017)... (NYSE: IBM ) is introducing several innovative partner startups ... collaboration between startups and global businesses, taking place in ... nine startups will showcase the solutions they have built with ... France is one of the ... percent increase in the number of startups created between 2012 ...
(Date:5/16/2017)... 16, 2017   Bridge Patient Portal , ... MD EMR Systems , an electronic medical ... GE, have established a partnership to build an ... the GE Centricity™ products, including Centricity Practice Solution ... These new integrations will allow healthcare delivery ...
(Date:4/19/2017)... New York , April 19, 2017 ... competitive, as its vendor landscape is marked by the ... the market is however held by five major players ... Safran. Together these companies accounted for nearly 61% of ... of the leading companies in the global military biometrics ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... platform specifically designed for life science researchers to analyze and interpret datasets, ... Franklin, who made a major contribution to the discovery of the double-helix ...
(Date:10/11/2017)... ... ... Personal eye wash is a basic first aid supply for any work environment, but most ... you rinse first if a dangerous substance enters both eyes? It’s one less decision, and ... unique dual eye piece. , “Whether its dirt and debris, or an acid or alkali, ...
(Date:10/11/2017)... , Oct. 11, 2017  VMS BioMarketing, a leading ... a nationwide oncology Clinical Nurse Educator (CNE) network, which will ... need for communication among health care professionals to enhance the ... nurses, office staff, and other health care professionals to help ... breast cancer. ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... implantation and pregnancy rates in frozen and fresh in vitro fertilization (IVF) ... and maternal age to IVF success. , After comparing the results from the ...
Breaking Biology Technology:
Cached News: