Featured Research

from universities, journals, and other organizations

Plant growth enhanced through promotion of pore opening

Date:
March 26, 2014
Source:
Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University
Summary:
By inducing the pore opening of leaves, researchers have developed a strategy for enhancing photosynthesis and plant growth, which may be applied to crops and fuel plants to support global food production and a sustainable low-carbon society.

The TG plant produced larger and increased numbers of rosette leaves with about 42–63% greater fresh and dry weights than WT plants for 25-day (A~C). Moreover, the dry weights of total flowering stems in 45-day-old TG plants (D), including seeds, siliques, and flowers, were about 36–41% greater than those of the WT under the same growth conditions.
Credit: Copyright ITbM, Nagoya University

By inducing the pore opening of leaves, researchers at Nagoya University's ITbM developed a strategy for enhancing photosynthesis and plant growth, which may be applied to crops and fuel plants to support global food production and a sustainable low-carbon society.

By determining the key factor in regulating photosynthesis and plant growth, Professor Toshinori Kinoshita, Dr. Yin Wang and co-workers at Nagoya University's Institute of Transformative Bio-Molecules (WPI-ITbM) have succeeded in developing a method to increase photosynthesis (carbon dioxide uptake) and plant growth through the promotion of stomatal opening. The study was recently published in the Proceedings of the National Academy of Sciences (PNAS), is expected to contribute to the promotion of plant production and towards the development of a sustainable low-carbon society.

Stomata are small pores located on the surface of leaves that control gas exchange with the external environment, and are the primary inlet for the uptake of carbon dioxide. "Stomatal resistance, which suppresses gas exchange through the stomata, is considered to be the major limiting factor for carbon dioxide uptake by plants during photosynthesis," explains Professor Kinoshita, "very few reports have existed focusing on the induction of stomatal opening. Therefore, we decided to develop a method to manipulate stomatal opening in view of increasing photosynthesis (carbon dioxide uptake) and plant production."

Kinoshita's group has already revealed some of the key factors that mediate stomatal opening. The plasma membrane proton (H+)-ATPase or proton pump, an enzyme creating electrochemical gradients in the cell membranes of plants, has been identified as one of the key components. "An increase in photosynthesis (carbon dioxide uptake) by approximately 15% and a 1.4~1.6 times increase in plant growth of Arabidopsis plants was observed by enhanced stomatal opening achieved through overexpression of the proton pump in guard cells that surround the stomata pore," elaborates Professor Kinoshita.

Professor Kinoshita and his co-workers envisage that application of this method will contribute to the increase in the production of crops and fuel plants as well as towards the reduction of carbon dioxide in the atmosphere. Professor Kinoshita states, "Identifying that the manipulation of stomatal opening is the key limiting factor in photosynthesis and plant growth enables us to consider strategies to solve current issues in food production and carbon emissions."


Story Source:

The above story is based on materials provided by Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University. Note: Materials may be edited for content and length.


Journal Reference:

  1. Y. Wang, K. Noguchi, N. Ono, S.-i. Inoue, I. Terashima, T. Kinoshita. Overexpression of plasma membrane H -ATPase in guard cells promotes light-induced stomatal opening and enhances plant growth. Proceedings of the National Academy of Sciences, 2013; 111 (1): 533 DOI: 10.1073/pnas.1305438111

Cite This Page:

Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University. "Plant growth enhanced through promotion of pore opening." ScienceDaily. ScienceDaily, 26 March 2014. <www.sciencedaily.com/releases/2014/03/140326091835.htm>.
Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University. (2014, March 26). Plant growth enhanced through promotion of pore opening. ScienceDaily. Retrieved September 3, 2014 from www.sciencedaily.com/releases/2014/03/140326091835.htm
Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University. "Plant growth enhanced through promotion of pore opening." ScienceDaily. www.sciencedaily.com/releases/2014/03/140326091835.htm (accessed September 3, 2014).

Share This



More Plants & Animals News

Wednesday, September 3, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Snack Attack: Study Says Action Movies Make You Snack More

Snack Attack: Study Says Action Movies Make You Snack More

Newsy (Sep. 2, 2014) You're more likely to gain weight while watching action flicks than you are watching other types of programming, says a new study published in JAMA. Video provided by Newsy
Powered by NewsLook.com
Get A Mortgage, Receive A Cat — Only In Russia

Get A Mortgage, Receive A Cat — Only In Russia

Newsy (Sep. 2, 2014) The incentive is in keeping with a Russian superstition that it's good luck for a cat to be the first to cross the threshold of a new home. Video provided by Newsy
Powered by NewsLook.com
U.N. Says Ebola Travel Restrictions Will Cause Food Shortage

U.N. Says Ebola Travel Restrictions Will Cause Food Shortage

Newsy (Sep. 2, 2014) The U.N. says the problem is two-fold — quarantine zones and travel restrictions are limiting the movement of both people and food. Video provided by Newsy
Powered by NewsLook.com
Sharks Off the Menu and on the Tourist Trail in Palau

Sharks Off the Menu and on the Tourist Trail in Palau

AFP (Sep. 2, 2014) Tourists in Palau clamour to dive with sharks thanks to a pioneering conservation initiative -- as the island nation plans to completely ban commercial fishing in its vast ocean territory. 01:15 Video provided by AFP
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