Researchers alter ethylene production in corn to combat drought

decrease font size  Resize text   increase font size       Printer-friendly version of this article Printer-friendly version of this article

Scientists from DuPont Pioneer used gene-silencing approach to modulate the levels of ethylene biosynthesis in corn and study its effect on grain yield under drought conditions in the field. The results of the study were released in Plant Biotechnology Journal.

Commercially relevant transgenic events were created with down-regulated ACC synthases (ACSs), enzymes that catalyse the rate-limiting step in ethylene biosynthesis. These events exhibit decreased release of ethylene to approximately half compared with non-transgenic nulls. Field tests of the transgenic hybrids and controls were conducted in drought-stress and rain-fed areas in the U.S.

Results of yield data showed that transgenic events had significantly increased grain yield compared with the controls, with the best event having a 0.58 Mg/ha (9.3 bushel/acre) increase after a flowering period drought stress. Furthermore, secondary traits analysis showed that there was a consistent decrease in the anthesis-silking interval and a concomitant increase in kernel number/ear in transgene-positive events versus controls. Selected events were also field tested under a low-nitrogen treatment, and the best event was found to have a significant 0.44 Mg/ha (7.1 bushel/acre) yield increase.

Based on the results, it was concluded that down-regulating the ethylene biosynthetic pathway can improve the grain yield of maize under abiotic stress conditions.

Read the abstract at http://www.ncbi.nlm.nih.gov/pubmed/24618117.


Buyers Guide

Doyle Equipment Manufacturing Co.
Doyle Equipment Manufacturing prides themselves as being “The King of the Rotary’s” with their Direct Drive Rotary Blend Systems. With numerous setup possibilities and sizes, ranging from a  more...
A.J. Sackett Sons & Company
Sackett Blend Towers feature the H.I.M, High Intensity Mixer, the next generation of blending and coating technology which supports Precision Fertilizer Blending®. Its unique design allows  more...
R&R Manufacturing Inc.
The R&R Minuteman Blend System is the original proven performer. Fast, precise blending with a compact foot print. Significantly lower horsepower requirement. Low inload height with large  more...
Junge Control Inc.
Junge Control Inc. creates state-of-the-art product blending and measuring solutions that allow you to totally maximize operating efficiency with amazing accuracy and repeatability, superior  more...
Yargus Manufacturing
The flagship blending system for the Layco product line is the fully automated Layco DW System™. The advanced technology of the Layco DW (Declining Weight) system results in a blending  more...
Yargus Manufacturing
The LAYCOTE™ Automated Coating System provides a new level of coating accuracy for a stand-alone coating system or for coating (impregnating) in an automated blending system. The unique  more...
John Deere
The DN345 Drawn Dry Spreader can carry more than 12 tons of fertilizer and 17.5 tons of lime. Designed to operate at field speeds up to 20 MPH with full loads and the G4 spreader uniformly  more...
Force Unlimited
The Pro-Force is a multi-purpose spreader with a wider apron and steeper sides. Our Pro-Force has the most aggressive 30” spinner on the market, and is capable of spreading higher rates of  more...
BBI Spreaders
MagnaSpread 2 & MagnaSpread 3 — With BBI’s patented multi-bin technology, these spreaders operate multiple hoppers guided by independent, variable-rate technology. These models are built on  more...


Comments (0) Leave a comment 

Name
e-Mail (required)
Location

Comment:

characters left


Aluminum Grain Trailers

Maurer Manufacturing offers a complete line of high quality aluminum grain trailers. Manufactured in Spencer, Iowa, Maurer aluminum grain trailers ... Read More

View all Products in this segment

View All Buyers Guides

Feedback Form
Feedback Form