Navigation Links
Whiteflies and plant viruses can help each other to speed up biological invasion

An invasive whitefly has developed mutualistic relationships with the plant viruses it transmits and is able to increase its population much faster on virus-infected plants than on healthy plants, whereas its indigenous counterpart is unable to do so, according to the new research carried out at Zhejiang University and Chinese Academy of Agricultural Sciences, China.

Twenty years ago in 1986 in the USA, Florida experienced outbreaks of what is now known as whitefly (Bemisia tabaci) biotype "B," first in greenhouse poinsettia, then in a wide range of vegetable, ornamental and field crops. Soon similar outbreaks were seen in other States within the USA and many other countries around the world. The outbreaks of the B whitefly have often been followed by pandemics of a group of plant viruses called begomoviruses on crops such as tomato and tobacco. These viruses are transmitted by this whitefly. In many countries and regions, including China, the outbreaks of the B whitefly have also seen the gradual disappearance of some native whitefly biotypes.

Many scientists around the world have been investigating why the B whitefly is so invasive. It is now widely accepted that the B whitefly is most likely to have originated from the Mediterranean/North Africa region, and its recent widespread invasion has been assisted by the worldwide flower trade. The question remains how this pest can increase so rapidly and displace native biotypes of whitefly after it has been transported to new localities.

The research compared development, survival, fecundity and population increase of the invasive B whitefly and an indigenous whitefly (called ZHJ1) on both virus-infected and healthy tobacco plants. Compared to its performance on healthy plants, the invasive B whitefly had higher fecundity and longevity by 12 and 6 fold when feeding on plants infected by one virus, and by 18 and 7 fold when feeding on plants infected by another virus. Population density of th e B whitefly on virus-infected plants reached 2-13 times that on healthy plants in 56 days. No doubt increase of infectious whiteflies will in turn speed up virus pandemics. In contrast, the indigenous whitefly performed similarly on healthy and virus-infected plants.

"This is the first study that shows an invasive insect has such a mutualistic relationship with the viruses it transmits, whereas its indigenous counterpart does not," said Professor Shu-Sheng Liu, corresponding author of the study, from the Institute of Insect Sciences, Zhejiang University. "We believe that the mutualism between the B whitefly and the viruses may contribute to the ability of the B whitefly to both invade and displace indigenous whiteflies, as well as causing disease pandemics of the viruses associated with this vector."

The study also shows that infection of the whiteflies per se has limited effects on the survival and fecundity of the vectors, and the B whitefly acquires the benefits through feeding on the virus-infected plants. Thus the mutualism is indirect. The researchers believe that this kind of mutualism may exist in many circumstances and should receive more attention in the research and management of biological invasions.
'"/>

Source:Public Library of Science


Related biology news :

1. Key molecule in plant photo-protection identified
2. Transplantation Of Monkey Embryonic Stem Cells Reverses Parkinson Disease In Primates
3. Emory Eye Center Implants Its First Retinal Chips In Patients With Retinitis Pigmentosa
4. Circles Of DNA Might Help Predict Success Of Stem Cell Transplantation
5. Antibodies from plants protect against anthrax
6. New RNA polymerase discovered in plants
7. Implanted Devices Detect High-Risk Heart Failure Patients
8. Ophthalmologists implant five patients with artificial silicon retina microchip
9. World-first Living Donor Islet Cell Transplant A Success; Procedure Offers Promise For Diabetics
10. Polymers with copper show promise for implanted sensors
11. Transgenic plants remove more selenium from polluted soil than wild plants, new tests show

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/19/2016)... April 20, 2016 The new ... a compact web-based "all-in-one" system solution for all door ... reader or the door interface with integration authorization management ... control systems. The minimal dimensions of the access control ... the building installations offer considerable freedom of design with ...
(Date:4/14/2016)... April 14, 2016 BioCatch ... Detection, today announced the appointment of Eyal Goldwerger ... role. Goldwerger,s leadership appointment comes at a ... of the deployment of its platform at several of ... technology, which discerns unique cognitive and physiological factors, is ...
(Date:3/31/2016)... 2016  Genomics firm Nabsys has completed a financial ... Bready , M.D., who returned to the company in ... leadership team, including Chief Technology Officer, John Oliver ... Nurnberg and Vice President of Software and Informatics, ... Dr. Bready served as CEO of Nabsys from ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... /PRNewswire/ - FACIT has announced the creation of ... company, Propellon Therapeutics Inc. ("Propellon" or "the Company"), ... portfolio of first-in-class WDR5 inhibitors for the treatment ... represent an exciting class of therapies, possessing the ... cancer patients. Substantial advances have been achieved with ...
(Date:6/23/2016)... June 23, 2016  The Prostate Cancer Foundation (PCF) is pleased ... and faster cures for prostate cancer. Members of the Class of 2016 were ... Read More About the Class of 2016 PCF Young ... ... ...
(Date:6/23/2016)... ... 2016 , ... STACS DNA Inc., the sample tracking software company, today announced ... has joined STACS DNA as a Field Application Specialist. , “I am thrilled ... COO of STACS DNA. “In further expanding our capacity as a scientific integrator, Hays ...
(Date:6/23/2016)... , June 23, 2016 ... Hematology Review, 2016;12(1):22-8 http://doi.org/10.17925/OHR.2016.12.01.22 ... , the peer-reviewed journal from touchONCOLOGY, Andrew ... escalating cost of cancer care is placing an ... result of expensive biologic therapies. With the patents ...
Breaking Biology Technology: