Plant perception (physiology)

In the study of plant physiology "plant perception" is a term used to describe mechanisms by which plants recognize changes in the environment. Examples of stimuli which plants perceive and can react to include chemicals, gravity, light, moisture, infections, temperature, oxygen and carbon dioxide concentrations, parasite infestation, physical disruption, and touch. Plants have a variety of means to detect such stimuli and a variety of reaction responses or behaviors.

Plant perception occurs on a cellular level and its concomitant reactive behavior is mediated by phytochromes, kinins, hormones, antibiotic or other chemical release, changes of water and chemical transport, and other means. These responses are generally slow, taking at minimum a number of hours to accomplish and seen best with time-lapse cinematography, however rapid movements can occur.

Research published in September 2006 [ [http://www2.cnrs.fr/en/664.htm?debut=16 The "sixth sense" of plants] ] has shown, certainly in the case of Arabidopsis thaliana, the role of cryptochromes in the perception of magnetic fields by plants.

Notes

ee also

* Auxin - A plant hormone which mediates responses
* Chemotropism - Plant response to chemicals
* Cryptochrome - A light receptor pigment
* Ethylene - A plant hormone which mediates responses
* Gravitropism - Behavior associated with gravitic perception
* Heliotropism - Behavior associated with sunlight perception
* Hormonal sentience - Plant information processing theory
* Hydrotropism - Plant response to moisture
* Hypersensitive response - Local reaction produced in response to infection by microbes
* Kinesis - Movement
* Nastic movements - A type of rapid response to non-directional stimulus
* Osmosis - A means of water transportation on the cellular level
* Phototropin - A light receptor pigment
* Phototropism - A behavior associated with light perception
* Phytochrome - A light receptor pigment
* Phytosemiotics - Analysis of vegetative processes on the basis of semiotic theory
* Plant defense against herbivory - Some plant responses to physical disruption
* Plant hormone - A mediator of response to stimuli
* Plant physiology - The science of plant function
* Rapid plant movement - Description of rapid plant movements
* Sensory receptors - Discussion of organs of perception in organisms
* Statolith - An organ of gravity perception
* Stoma - A plant pore which responds to stimulus and which regulates gas exchange
* Systemic acquired resistance - A "whole-plant" resistance response to microbial pathogens that occurs following an earlier, localized response
* Taxis - A type of response to a directional stimulus seen in motile developmental stages of lower plants
* Thermotropism - Plant response to heat
* Thigmotropism - Plant response to touch
* Tropism - A type of response to a directional stimulus

External links

*cite journal
last = Trewavas
first = Anthony
authorlink = trewavas(AT)ed.ac.uk
coauthors =
title = Aspects of Plant Intelligence
journal = Annals of Botany
volume = 92
issue =
pages = 1–20
publisher = Annals of Botany Company
date = 9 May 2003
url = http://aob.oxfordjournals.org/cgi/content/full/92/1/1
doi = 10.1093/aob/mcg101
id =
accessdate = 2006-12-26

*cite conference
first = Deborah
last = Miller
authorlink =
coauthors = Whitney Hable, Jennifer Gottwald, Mary Ellard-Ivey, Taku Demura, Terri Lomax, Nick Carpita
title = Connections: The Hard Wiring of the Plant Cell for Perception, Signaling, and Response
booktitle =
pages = 2105-2117
publisher =
date = 1997
location = The Plant Cell 9(12)
url = http://www.plantcell.org/cgi/reprint/9/12/2105
doi =
id =
accessdate = 2006-12-25

*cite book
last = Keen
first = Noel T
authorlink =
coauthors = Shigeyuki Mayama, Jan E. Leach, and Shinji Tsujumu (eds)
title = Delivery and Perception of Pathogen Signals in Plants
publisher = APS Press
date = 2001
location =
pages = 268
url =
doi =
id = ISBN 0-89054-259-7

*cite book
last = Taiz
first = Lincoln
authorlink =
coauthors = Eduardo Zeiger
title = Plant Physiology, fourth edition
publisher = Sinauer Associates
date = 2006
location =
pages = 700 (est)
url = http://www.sinauer.com/detail.php?id=8567
doi =
id = ISBN13 978-0-87893-856-8
ISBN = 0-87893-856-7

*cite web
last = Taiz
first = Lincoln
authorlink =
coauthors = Eduardo Zeiger
title = Plant Physiology Online
work = a companion to Plant Physiology, Third Edition
publisher = Sinauer Associates
date = 2002
url = http://3e.plantphys.net/book.php
format =
doi =
accessdate = 2006-12-26

*cite book
author = Dierk Scheel and Claus Wastermack
title = Plant Signal Transduction
publisher = Oxford University Press
date = May 2002
location =
pages = 346
url = http://www.oup.com/us/catalog/general/subject/LifeSciences/Botany/?view=usa&ci=9780199638796
doi =
id = ISBN13 978-0-19-963879-6
ISBN-10 = 0-19-963879-9
accessdate = 2006-12-25