Featured Research

from universities, journals, and other organizations

Drought Tolerant Plants? New Technique Enables Assessment Of Drought Performance

Date:
November 13, 2008
Source:
BioMed Central/Plant Methods
Summary:
Measurement of chlorophyll fluorescence is an effective way of determining how well plants can cope with low-water conditions. The technique allows a quantitative and precise determination of viability in intact, drought-stressed plants.

Drought tolerance in plants. Botanists are increasingly engaged in efforts to cultivate plants that have low water requirements.
Credit: iStockphoto/Alexander Hafemann

Measurement of chlorophyll fluorescence is an effective way of determining how well plants can cope with low-water conditions. The technique allows a quantitative and precise determination of viability in intact, drought-stressed plants.

Due to the increasing demands of industrial, municipal and agricultural consumption on dwindling water supplies, botanists are increasingly engaged in efforts to cultivate plants that have low water requirements. Barry Pogson led a team of researchers from the Australian National University who investigated whether chlorophyll fluorescence could be used in the assessment of plant water status during such studies.

He said “We found that plants’ viability during increasing water deficit could be measured and quantified by measuring changes to the maximum efficiency of photosystem II (Fv/Fm), and that this was easily measurable by chlorophyll fluorometry.”

Other methods of assessing plants’ performance under water deficit have serious drawbacks. Methods that involve detaching parts of the plant are destructive and survival studies rely on qualitative observation of physical symptoms of water deficit stress such as turgor loss, chlorosis, and other qualities that can vary greatly between specimens and are also sensitive to experimental conditions.

Chlorophyll fluorescence is non-invasive and minimal technical expertise and a basic understanding of fluorometry. Pogson said “By correlating the decline in the Fv/Fm parameter to loss of viability, our procedure allows the monitoring of survival under water deficit conditions, namely defining a threshold of 33% of well-watered Fv/Fm values.”

This procedure may complement existing methods of evaluating drought performance while also increasing the number of tools available for assessment of other plant stresses.


Story Source:

The above story is based on materials provided by BioMed Central/Plant Methods. Note: Materials may be edited for content and length.


Journal Reference:

  1. Nick S Woo, Murray R Badger and Barry J Pogson. A rapid, non-invasive procedure for quantitative assessment of drought survival using chlorophyll fluorescence. Plant Methods, 2008, 4:27 DOI: 10.1186/1746-4811-4-27

Cite This Page:

BioMed Central/Plant Methods. "Drought Tolerant Plants? New Technique Enables Assessment Of Drought Performance." ScienceDaily. ScienceDaily, 13 November 2008. <www.sciencedaily.com/releases/2008/11/081112075037.htm>.
BioMed Central/Plant Methods. (2008, November 13). Drought Tolerant Plants? New Technique Enables Assessment Of Drought Performance. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2008/11/081112075037.htm
BioMed Central/Plant Methods. "Drought Tolerant Plants? New Technique Enables Assessment Of Drought Performance." ScienceDaily. www.sciencedaily.com/releases/2008/11/081112075037.htm (accessed September 2, 2014).

Share This




More Plants & Animals News

Tuesday, September 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

We've Got Mites Living In Our Faces And So Do You

We've Got Mites Living In Our Faces And So Do You

Newsy (Aug. 30, 2014) A new study suggests 100 percent of adult humans (those over 18 years of age) have Demodex mites living in their faces. Video provided by Newsy
Powered by NewsLook.com
Washington Wildlife Center Goes Nuts Over Baby Squirrels

Washington Wildlife Center Goes Nuts Over Baby Squirrels

Reuters - US Online Video (Aug. 30, 2014) An animal rescue in Washington state receives an influx of orphaned squirrels, keeping workers busy as they nurse them back to health. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Experimental Ebola Drug ZMapp Cures Lab Monkeys Of Disease

Experimental Ebola Drug ZMapp Cures Lab Monkeys Of Disease

Newsy (Aug. 29, 2014) In a new study, a promising experimental treatment for Ebola managed to cure a group of infected macaque monkeys. Video provided by Newsy
Powered by NewsLook.com
Killer Amoeba Found in Louisiana Water System

Killer Amoeba Found in Louisiana Water System

AP (Aug. 28, 2014) State health officials say testing has confirmed the presence of a killer amoeba in a water system serving three St. John the Baptist Parish towns. (Aug. 28) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins