Navigation Links
First parasitic nematodes reported in biofuel crops

URBANA Researchers at the Energy Biosciences Institute (EBI) at the University of Illinois have discovered widespread occurrence of plant-parasitic nematodes in the first reported nematode survey of Miscanthus and switchgrass plants used for biofuels.

Lead researcher Tesfamariam Mekete, a U of I post-doctoral research associate, said the team's first step was to identify potential pathogenic nematodes of these top two energy-yielding cellulosic-ethanol feedstock plants.

"Nematodes are a part of our soil systems," Mekete said. "However, when it comes to potential crops for biofuel production, we simply don't know which nematodes are present in these crops and at what levels."

The 2008-09 nematode survey included samples from 37 Miscanthus and 48 switchgrass plots in Illinois, Georgia, Iowa, Kentucky, South Dakota and Tennessee.

All sample sites had at least two nematode species that have been reported to reduce biomass in most monocotyledon hosts. The damaging population thresholds for these nematodes to Miscanthus and switchgrass are still unknown. However, the population densities encountered may present a potential risk to biofuels production when compared with threshold densities reported on other monocotyledon hosts, Mekete said.

Researchers discovered lesion (Pratylenchus), dagger (Xiphinema), needle (Longidorus), lance (Hoplolaimus), stunt (Tylenchorhynchus), spiral (Helicotylenchus), and ring (Criconema) in Miscanthus and switchgrass. These nematodes have previously been reported to cause damage to several plant species such as corn, bent grass, switchgrass and turf grasses.

"The high levels of nematodes found in our survey and the damage symptoms observed in infected roots suggest parasitism may contribute to the decline of biomass production," Mekete said.

Needle nematodes, discovered at high levels in the sandy soils of Havana, Ill., and Georgia, caused visible stunting of lateral roots and destruction of the fibrous root system. Mekete's team hopes to do further research in Havana to study the interaction between this nematode and biomass yield.

Researchers are now studying damage thresholds of lesion, root-knot and needle nematodes to Miscanthus and switchgrass under greenhouse conditions. Future studies will include host suitability and population dynamics of the most prevalent nematodes associated with these perennial grasses.

In addition to discovering information on the distribution, presence, abundance and identification of these nematodes, researchers also developed species-specific DNA tests to help identify nematodes so future research can focus on developing control tactics.

"Diseases and pests have the potential to cause significant constraints on biomass production, putting the crops at risk for reductions in biomass yield and quality," Mekete said. "Of the many pests and diseases, plant-parasitic nematodes are of great economic importance because they can directly influence plant biomass and predispose plants to attack by other soil-borne pathogens."


Contact: Jennifer Shike
University of Illinois at Urbana-Champaign

Related biology news :

1. First whole genome sequencing of family of 4 reveals new genetic power
2. LSUHSC researcher finds first inherited prostate cancer genetic mutation in African-American men
3. Which came first: Religion or the brain?
4. First time research on long-term consequences of intravenous nutrition on childrens health
5. New sensor array detects single molecules for the first time
6. First images from ESAs water mission
7. Caltech researchers obtain first brain recordings from behaving fruit flies
8. Human use heel first gait because it is efficient for walking
9. De La Rue to Provide East Africas First eID Project
10. First wild grass species and model system for energy crops sequenced
11. First member of the wheat and barley group of grasses is sequenced
Post Your Comments:
(Date:4/13/2017)... , April 13, 2017 UBM,s Advanced Design ... will feature emerging and evolving technology through its ... Summits will run alongside the expo portion of the ... panels and demonstrations focused on trending topics within 3D ... design and manufacturing event will take place June 13-15, 2017 ...
(Date:4/11/2017)... April 11, 2017 Crossmatch®, a globally-recognized ... solutions, today announced that it has been awarded ... Projects Activity (IARPA) to develop next-generation Presentation Attack ... "Innovation has been a driving force within ... will allow us to innovate and develop new ...
(Date:4/11/2017)... , April 11, 2017 No two ... researchers at the New York University Tandon School ... Engineering have found that partial similarities between prints ... used in mobile phones and other electronic devices ... The vulnerability lies in the fact that ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... ... October 10, 2017 , ... ... program has won a US2020 STEM Mentoring Award. Representatives of the FirstHand program ... in Volunteer Experience from US2020. , US2020’s mission is to change the trajectory ...
(Date:10/10/2017)... CALIFORNIA (PRWEB) , ... October 10, 2017 , ... ... technological innovation and business process optimization firm for the life sciences and healthcare ... BoxWorks conference in San Francisco. , The presentation, “Automating GxP Validation for ...
(Date:10/9/2017)... N.C. (PRWEB) , ... October 09, 2017 , ... At ... announced Dr. Christopher Stubbs, a professor in Harvard University’s Departments of Physics and Astronomy, ... Stubbs was a member of the winning team for the 2015 Breakthrough Prize in ...
(Date:10/7/2017)... ... October 06, 2017 , ... ... its ProxiMeta™ Hi-C metagenome deconvolution product, featuring the first commercially available Hi-C ... software to perform Hi-C metagenome deconvolution using their own facilities, supplementing the ...
Breaking Biology Technology: