Navigation Links
Phosphorus starvation linked to symptoms of citrus disease Huanglongbing in new study
Date:2/19/2013

microbial infections. To study the expression of citrus sRNAs in response to HLB, we grafted 19 greenhouse-grown healthy sweet orange plants with HLB-positive bark or leaf pieces. Both donor and receptor trees tested negative for other graft-transmissible pathogens of citrus. As controls, five plants were mock-inoculated with pathogen-free healthy tissue. Samples were collected at 10- and 14-week post inoculation/grafting for small RNA profiling. Leaves were also collected continuously at later points to ensure that the tissue used for sRNA libraries was from the diseased trees. sRNAs ranging from 18 to 28 nucleotides were isolated, cloned, and sequenced."

This resulted in the discovery of ten new microRNAs (miRNAs), along with 76 conserved miRNAs, and many small interfering miRNAs. Several of these sRNAs were found to have been induced specifically by HLB, which means that they can potentially be developed into early diagnosis markers for the disease. This is important because if trees can be diagnosed with HLB and treated before symptoms start to become apparent, then money spent by the global citrus industry on additional treatments might be saved.

In particular, miR399, which is induced by P starvation in other plant species, was discovered to be induced by HLB infection in the diseased citrus trees. It is known that miR399 is important for P translocation in plants by suppressing a P signalling pathway gene. The study found that the phosphorus level in leave of HLB-positive plants was on about 65% of that in healthy plants, suggesting that HLB is associated with P starvation in the citrus plants, which may in turn contribute to the expression of HLB symptoms.

Dr Jin writes, "we hypothesized that applying P solutions to the Las-positive trees would reduce HLB symptoms and improve tree performance." Phosphorus solutions were applied to HLB-positive sweet orange trees in a field trial three times per year for more than three years. Aft
'/>"/>

Contact: Kirsty Doole
kirsty.doole@oup.com
0044-186-535-5439
Oxford University Press
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Dietary shifts driving up phosphorus use
2. Researchers identify a simple way to precipitate phosphorus from the wastewater of a pulp mill
3. The Phosphorus Index: Changes afoot
4. Helping pigs to digest phosphorus
5. When the soil holds not enough phosphorus
6. Evidence contradicts idea that starvation caused saber-tooth cat extinction
7. Nutrient-sensing enzymes key to starvation response and survival in newborn mammals
8. Caffeine linked to low birth weight babies
9. Physical activity linked to lower rates of depression in bariatric surgery patients
10. Being overweight linked to higher risk of gum disease
11. Researchers discover mutations linked to relapse of childhood leukemia
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/19/2014)... Daylight was breaking over the central Pacific and ... about a dozen scientists strategized for the day ahead. ... to collect water samples around the southern Line Islands, ... gizmos and delicate machinery strewn throughout the 158-foot research ... research group to bring a DNA sequencer out into ...
(Date:8/18/2014)... , August 19, 2014 ... biometric authentication in smart devices  Trustonic, ... for smart devices, and Fingerprint Cards AB (FPC) ... of FIDO Ready™ secure biometric authentication on connected ... touch fingerprint sensors (FPC1020, FPC1021 and FPC1150) and ...
(Date:8/18/2014)... species native to a major Arizona watershed may lose ... as surface water flow is reduced by the effects ... these fish species, found in the Verde River Basin, ... easy access to various resources throughout the river and ... (Rhinichthys osculus), roundtail chub (Gila robusta) and Sonora sucker ...
Breaking Biology News(10 mins):Sequencing at sea 2Sequencing at sea 3Trustonic and Fingerprint Cards Collaborate to Bring Secure Biometrics to Connected Devices 2Trustonic and Fingerprint Cards Collaborate to Bring Secure Biometrics to Connected Devices 3Trustonic and Fingerprint Cards Collaborate to Bring Secure Biometrics to Connected Devices 4Climate change will threaten fish by drying out Southwest US streams, study predicts 2Climate change will threaten fish by drying out Southwest US streams, study predicts 3
... , RIDGE, N.Y., Oct. 21 What,s the cost ... preventing accidental death resulting from prescription medication abuse, there,s ... be unaware that the lock-boxes they,ve installed are not ... drugs. That,s why MEDNET(TM), a national leader in premium-quality ...
... CHAPEL HILL Scientists at the University of ... the University of California, San Francisco have developed and ... for existing drugs. The researchers developed a computational ... known drugs are to the naturally occurring binding partners ...
... 4, 2009) For more than 25 years, all ... Strombus gigas ) have been unsuccessfuluntil now. For the ... beaded (nucleated) and non-beaded cultured pearls from the queen ... University,s Harbor Branch Oceanographic Institute (HBOI). With less than ...
Cached Biology News:MEDNET Launches MedSafe to Prevent Teenage Prescription Drug Abuse 2MEDNET Launches MedSafe to Prevent Teenage Prescription Drug Abuse 3Study points to new uses, unexpected side effects of already existing drugs 2Scientists are first to 'unlock' the mystery of creating cultured pearls from the queen conch 2Scientists are first to 'unlock' the mystery of creating cultured pearls from the queen conch 3
(Date:8/19/2014)... Md. , Aug. 19, 2014   ... biotechnology company developing novel anti-infective biologic and drug ... and diseases, announced today that its novel ... at the 54 th Interscience Conference on ... Washington D.C. ...
(Date:8/18/2014)... A new therapy developed by researchers at the ... Medicine and Columbia University Medical Center (CUMC) may ... disease treatment. , The researchers demonstrated in ... could selectively inhibit blood vessel re-narrowing and simultaneously ... a balloon catheter to open narrowed or blocked ...
(Date:8/18/2014)... and data storage may someday run on ... to read and write digital information, outperforming ... But ferroelectrics must first overcome a few ... of "forgetting" stored data. , Now, ... Brookhaven National Laboratory have discovered nanoscale asymmetries ...
(Date:8/18/2014)... 18, 2014 TNI BioTech, Inc. (OTC-BB: TNIB) ... manufacturing and marketing of innovative therapies for autoimmune diseases ... providing a second notice of TNI BioTech,s annual meeting ... announcement, Noreen Griffin , founder and CEO of ... your participation in the Annual Meeting. On behalf of ...
Breaking Biology Technology:Synthetic Biologics Announces Late-Breaking Poster Presentation for C. difficile Program at 54th ICAAC 2Synthetic Biologics Announces Late-Breaking Poster Presentation for C. difficile Program at 54th ICAAC 3Synthetic Biologics Announces Late-Breaking Poster Presentation for C. difficile Program at 54th ICAAC 4Selective therapy may improve artery repair after interventional cardiovascular procedures 2Selective therapy may improve artery repair after interventional cardiovascular procedures 3Promising ferroelectric materials suffer from unexpected electric polarizations 2Promising ferroelectric materials suffer from unexpected electric polarizations 3Promising ferroelectric materials suffer from unexpected electric polarizations 4TNI BioTech Inc., provides 2nd Notice of Annual Meeting September 4, 2014 2TNI BioTech Inc., provides 2nd Notice of Annual Meeting September 4, 2014 3TNI BioTech Inc., provides 2nd Notice of Annual Meeting September 4, 2014 4
... (Nasdaq:,AWRE), a leading supplier of broadband technology and biometrics ... an extension to,the program originally authorized on August 28, ... up to $5 million worth of shares of,the Company,s ... until December,31, 2009 at prevailing market prices. The Board ...
... Net Revenues, $0.10 Net Income Per Share, SAN ... VNUS ), a leading provider of medical devices,for ... its,financial results for the third quarter ended September 30, ... 2008 increased 32% to $23.1,million compared with $17.5 million ...
... Transgenomic, Inc. (OTC,Bulletin Board: TBIO) today announced financial results ... results are presented in,the tables that follow., Third ... $5.4 million during the third,quarter of 2008, compared to ... from continuing operations was $2.9 million or 54,percent during ...
Cached Biology Technology:Aware, Inc. Announces Extension of Stock Repurchase Plan 2VNUS Medical Technologies Reports Third-Quarter 2008 Results: 25% Growth in Net Product Revenues and 29% Growth in Unit Sales Over Third Quarter 2007 2VNUS Medical Technologies Reports Third-Quarter 2008 Results: 25% Growth in Net Product Revenues and 29% Growth in Unit Sales Over Third Quarter 2007 3VNUS Medical Technologies Reports Third-Quarter 2008 Results: 25% Growth in Net Product Revenues and 29% Growth in Unit Sales Over Third Quarter 2007 4VNUS Medical Technologies Reports Third-Quarter 2008 Results: 25% Growth in Net Product Revenues and 29% Growth in Unit Sales Over Third Quarter 2007 5VNUS Medical Technologies Reports Third-Quarter 2008 Results: 25% Growth in Net Product Revenues and 29% Growth in Unit Sales Over Third Quarter 2007 6VNUS Medical Technologies Reports Third-Quarter 2008 Results: 25% Growth in Net Product Revenues and 29% Growth in Unit Sales Over Third Quarter 2007 7VNUS Medical Technologies Reports Third-Quarter 2008 Results: 25% Growth in Net Product Revenues and 29% Growth in Unit Sales Over Third Quarter 2007 8VNUS Medical Technologies Reports Third-Quarter 2008 Results: 25% Growth in Net Product Revenues and 29% Growth in Unit Sales Over Third Quarter 2007 9VNUS Medical Technologies Reports Third-Quarter 2008 Results: 25% Growth in Net Product Revenues and 29% Growth in Unit Sales Over Third Quarter 2007 10Transgenomic, Inc. Reports Third Quarter 2008 Results 2Transgenomic, Inc. Reports Third Quarter 2008 Results 3Transgenomic, Inc. Reports Third Quarter 2008 Results 4Transgenomic, Inc. Reports Third Quarter 2008 Results 5Transgenomic, Inc. Reports Third Quarter 2008 Results 6Transgenomic, Inc. Reports Third Quarter 2008 Results 7
... Ac-DEVD-CHO is an inhibitor ... The concentration of inhibitor ... activity must be determined ... Ten micromolar inhibitor is ...
Human RELT/TNFRSF19L MAb (Clone 238104)...
homeo box D3, mRNA...
Human TSLP MAb (Clone 258136)...
Biology Products: