Featured Research

from universities, journals, and other organizations

New target to boost plant resistance to insects and pathogens identified

Date:
May 23, 2013
Source:
Cell Press
Summary:
Plants have evolved unique and sophisticated immune systems to defend themselves against insects and pathogens. Plant hormones called jasmonates play an important role in this defense, but jasmonates have been found to also be important for plant growth. Now, researchers have discovered a gene in the jasmonate pathway that controls plant defenses but does not play a detectable role in plant development. These findings could be applied to improve crop resistance in agriculture.

The top leaves are marked with "jav1" and show reduced consumption by insect and inhibit insect growth. The bottom leaves are marked with "JAV1" and exhibit opposite phenotypes.
Credit: Hu et al., Molecular Cell

Plants can't swat a bug or run away from one, but that doesn't mean that plants can't fight back. Plants have evolved unique and sophisticated immune systems to defend themselves against insects and pathogens. Plant hormones called jasmonates play an important role in this defense, but jasmonates have been found to also be important for plant growth. Now, researchers reporting in the May 23 issue of the Cell Press journal Molecular Cell have discovered a gene in the jasmonate pathway that controls plant defenses but does not play a detectable role in plant development. These findings could be applied to improve crop resistance in agriculture.

"Our findings may be used to develop a novel strategy to engineer dual plant resistances against both insects and pathogens in the agricultural industry by manipulating the jasmonate signaling pathway without negatively affecting plant growth," says senior author Dr. Daoxin Xie of Tsinghua University in Beijing, China.

Dr. Xie and his colleagues performed genetic screening tests in plants to silence different genes in the jasmonate pathway. The experiments revealed that silencing the JAV1 gene significantly enhanced jasmonate-regulated defense responses against pathogens and insects but did not severely alter jasmonate-mediated developmental processes.

The researchers also found that in normal plants, jasmonates, which accumulate following an attack by insects or pathogens, trigger the degradation of the protein encoded by the JAV1 gene. Without the JAV1 protein to keep them in check, other regulators are free to turn on immune response genes that rev up the immune system.

"These findings have provided an insight into the molecular mechanism by which plants integrate jasmonate signals to protect themselves from insect attack and pathogen infection," the authors write.


Story Source:

The above story is based on materials provided by Cell Press. Note: Materials may be edited for content and length.


Journal Reference:

  1. Hu P, W Zhou, Z Cheng, M Fan, L Wang, Xie D. JAV1 Controls Jasmonate-regulated plant defense. Molecular Cell, 2013

Cite This Page:

Cell Press. "New target to boost plant resistance to insects and pathogens identified." ScienceDaily. ScienceDaily, 23 May 2013. <www.sciencedaily.com/releases/2013/05/130523143346.htm>.
Cell Press. (2013, May 23). New target to boost plant resistance to insects and pathogens identified. ScienceDaily. Retrieved September 22, 2014 from www.sciencedaily.com/releases/2013/05/130523143346.htm
Cell Press. "New target to boost plant resistance to insects and pathogens identified." ScienceDaily. www.sciencedaily.com/releases/2013/05/130523143346.htm (accessed September 22, 2014).

Share This



More Plants & Animals News

Monday, September 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: San Diego Zoo Welcomes Cheetah Cubs

Raw: San Diego Zoo Welcomes Cheetah Cubs

AP (Sep. 20, 2014) The San Diego Zoo has welcomed two Cheetah cubs to its Safari Park. The nearly three-week-old female cubs are being hand fed and are receiving around the clock care. (Sept. 20) Video provided by AP
Powered by NewsLook.com
Chocolate Museum Opens in Brussels

Chocolate Museum Opens in Brussels

AFP (Sep. 19, 2014) Considered a "national heritage" in Belgium, chocolate now has a new museum in Brussels. In a former chocolate factory, visitors to the permanent exhibition spaces, workshops and tastings can discover derivatives of the cocoa bean. Duration: 01:00 Video provided by AFP
Powered by NewsLook.com
Could Grief Affect The Immune Systems Of Senior Citizens?

Could Grief Affect The Immune Systems Of Senior Citizens?

Newsy (Sep. 19, 2014) The study found elderly people are much more likely to become susceptible to infection than younger adults going though a similar situation. Video provided by Newsy
Powered by NewsLook.com
Jury Delivers Verdict in Salmonella Trial

Jury Delivers Verdict in Salmonella Trial

AP (Sep. 19, 2014) A federal jury has convicted three people in connection with an outbreak of salmonella poisoning five years ago that sickened hundreds of people and was linked to a number of deaths. (Sept. 19) 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